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Nitrogen-doped carbon nanotube catalytic membrane with peroxymonosulfate activation for the degradation of metronidazole and bisphenol A: Performance and mechanism comparison SCIE
期刊论文 | 2024 , 319 | DESALINATION AND WATER TREATMENT
摘要&关键词 引用

摘要 :

As typical pharmaceuticals and personal care products (PPCPs), metronidazole (MNZ) and bisphenol A (BPA) normally presented in sewage effluent and surface water. The nitrogen-doped multi-walled carbon nanotube (NCNT) membrane was prepared and utilized as a peroxymonosulphate (PMS) catalyst to degrade MNZ and BPA. Within the NCNT membrane/PMS catalytic system, MNZ and BPA can be efficiently degraded, while different catalytic degradation mechanism exists related with their structure, adsorption properties and even PMS dosage. The optimal conditions for the degradation of MNZ and BPA were investigated. Quenching tests and electron paramagnetic resonance examination demonstrated that center dot OH radicals and 1O2 played roles in MNZ degradation, while surface-bound radicals and 1O2 dominated BPA degradation within the NCNT membrane catalytic PMS system. Electrochemical tests proved that an electron-transfer process between NCNT membrane and PMS during MNZ degradation, and the electron-transfer process was further verified with the degradation experiment in the binary-solute system (BPA and MNZ). PMS dosage had little influence on the degradation mechanism of MNZ and BPA.

关键词 :

Catalytic membrane Catalytic membrane Nitrogen -doped multi -walled carbon nanotube Nitrogen -doped multi -walled carbon nanotube Bisphenol A Bisphenol A Metronidazole Metronidazole Peroxymonosulphate Peroxymonosulphate

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GB/T 7714 Wei, Na , Liu, Guohan , Liu, Qiushan et al. Nitrogen-doped carbon nanotube catalytic membrane with peroxymonosulfate activation for the degradation of metronidazole and bisphenol A: Performance and mechanism comparison [J]. | DESALINATION AND WATER TREATMENT , 2024 , 319 .
MLA Wei, Na et al. "Nitrogen-doped carbon nanotube catalytic membrane with peroxymonosulfate activation for the degradation of metronidazole and bisphenol A: Performance and mechanism comparison" . | DESALINATION AND WATER TREATMENT 319 (2024) .
APA Wei, Na , Liu, Guohan , Liu, Qiushan , Wu, Wenjun , Wang, Yufei , Du, Kemeng et al. Nitrogen-doped carbon nanotube catalytic membrane with peroxymonosulfate activation for the degradation of metronidazole and bisphenol A: Performance and mechanism comparison . | DESALINATION AND WATER TREATMENT , 2024 , 319 .
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Enhancing the performance of catalytic membranes for simultaneous degradation of dissolved organic phosphonates and phosphorous recovery: A fit-for-purpose loose nanofiltration design SCIE
期刊论文 | 2024 , 354 | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
摘要&关键词 引用

摘要 :

In this study, we developed a loose nanofiltration catalytic membrane (LNCM) by incorporating nitrogen-doped carbon nanotubes (NCNT) into graphene oxide (GO) membrane (NCNT@GO-M) to activate peroxymonosulfate for efficient phosphonates degradation into phosphate, reducing phosphorus-based pollution and facilitating P recovery. The NCNT@GO-M exhibited superior permeability (76.7 L m(-2) h(-1) bar(-1)) due to its expanded pore size (1.60 nm). It integrated nanoconfinement and surface catalysis, improving the availability of surface-bound sulfate radicals for rapid Orth-P generation (k(obs), 1.93 s(-1)), with the k(obs) being 2.4 times higher than that of the NCNT membrane catalytic system and 2626 times higher than the NCNT@GO heterogeneous catalytic system. The NCNT@GO-M also demonstrated excellent antifouling, self-cleaning, and anti-interference ability, effectively retaining humic acid with a molecular weight exceeding 3.6 kDa (similar to 62% removal of dissolved organic carbon), making it suitable for real-water applications. The development of LNCM shows great potential for transforming and recovery of the nutrients in wastewater.

关键词 :

Size exclusion Size exclusion Confinement Confinement Mass transfer Mass transfer Reaction kinetics Reaction kinetics Loose nanofiltration Loose nanofiltration

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GB/T 7714 Wu, Wenjun , Wang, Yufei , Du, Kemeng et al. Enhancing the performance of catalytic membranes for simultaneous degradation of dissolved organic phosphonates and phosphorous recovery: A fit-for-purpose loose nanofiltration design [J]. | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2024 , 354 .
MLA Wu, Wenjun et al. "Enhancing the performance of catalytic membranes for simultaneous degradation of dissolved organic phosphonates and phosphorous recovery: A fit-for-purpose loose nanofiltration design" . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY 354 (2024) .
APA Wu, Wenjun , Wang, Yufei , Du, Kemeng , Liu, Qiushan , Zhou, Tong , Wei, Na et al. Enhancing the performance of catalytic membranes for simultaneous degradation of dissolved organic phosphonates and phosphorous recovery: A fit-for-purpose loose nanofiltration design . | APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY , 2024 , 354 .
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Preparation of a novel LC@MWCNTs membrane and its application for enhanced phosphate removal and fouling control SCIE
期刊论文 | 2024 , 64 | JOURNAL OF WATER PROCESS ENGINEERING
摘要&关键词 引用

摘要 :

To control the eutrophication originating from phosphate discharge, a novel adsorptive membrane was prepared by vacuum filtrating lanthanum carbonate modified multi-walled carbon nanotubes (LC@MWCNTs) on the UF membrane. The LC@MWCNTs were firstly made using an in-situ method by adding MWCNTs to LaCl3 & sdot;7H2O solution and forming lanthanum carbonate under alkaline conditions. The adsorption experiments exhibited that the maximum adsorption capacity of LC@MWCNTs was 77.58 mg P/g at pH 5. And the phosphate adsorption by LC@MWCNTs was not predominantly reliant on electrostatic interaction, but rather achieved through chemical interactions. Then, the prepared LC@MWCNTs membrane was systematically evaluated for its phosphate removal efficiency and anti-fouling performance during filtration. With the initial phosphate concentration of 1 mg P/L and membrane flux of 378 L & sdot;m- 2 h- 1, the phosphate removal by LC@MWCNTs membrane approached almost 100 %. Moreover, the LC@MWCNTs membrane exhibited higher permeability (281.6 L & sdot;m- 2h- 1bar- 1) and effectiveness for humic acid (HA) removal (75 %), and LC@MWCNTs membrane mitigated the fouling caused by HA. XPS, FTIR and XRD elucidated that phosphate removal by LC@MWCNTs membrane primarily through the formation of La-O-P inner-sphere complexes via ligand exchange, resulting in the formation of adsorption product LaPO4 & sdot;0.5H2O. Under strong alkaline conditions, the LC@MWCNTs membrane rapidly restored its phosphate removal performance (30 min) with no significant detachment of the LC@MWCNTs layer, indicating its good recovery and reusability performance. Additionally, the LC@MWCNTs membrane could continuously remove phosphate from actual water, confirming its potential for future practical applications.

关键词 :

Lanthanum carbonate Lanthanum carbonate Ultrafiltration Ultrafiltration Multi-walled carbon nanotubes Multi-walled carbon nanotubes Phosphate Phosphate

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GB/T 7714 Liu, Guohan , Wei, Na , Wu, Wenjun et al. Preparation of a novel LC@MWCNTs membrane and its application for enhanced phosphate removal and fouling control [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 64 .
MLA Liu, Guohan et al. "Preparation of a novel LC@MWCNTs membrane and its application for enhanced phosphate removal and fouling control" . | JOURNAL OF WATER PROCESS ENGINEERING 64 (2024) .
APA Liu, Guohan , Wei, Na , Wu, Wenjun , Liu, Qiushan , Wang, Yufei , Du, Kemeng et al. Preparation of a novel LC@MWCNTs membrane and its application for enhanced phosphate removal and fouling control . | JOURNAL OF WATER PROCESS ENGINEERING , 2024 , 64 .
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Low-pressure carbon nanotube membrane with different surface properties for the removal of organic dyes and PPCPs SCIE
期刊论文 | 2023 , 11 (3) | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
摘要&关键词 引用

摘要 :

Low-pressure carbon nanotube membranes (CNT membranes) was prepared with multi-walled carbon nanotubes (MWCNTs), carboxyl functionalized MWCNTs (COOH-MWCNTs) and single-walled carbon nanotubes (SWCNTs). Surface properties of MWCNTs and SWCNTs were further altered by their non-covalent functionalization with Humic acid (HA), Sodium dodecyl sulfate (SDS), Sodium alginate (SA) and Polyethylene glycol (PEG). The CNT membranes with different surface properties were then used for the removal of organic dyes and pharmaceuticals and personal care products (PPCPs). The results revealed that HA/SDS/SA non-covalent functionalized MWCNTs membrane significantly promoted the removal of cationic dye MB, while it slightly interfered the removal of anionic dye RB19. During the dynamic filtration process, a 20 similar to 30% increase of MB removal was promoted by HA/SDS/SA-MWCNTs membrane compared with the MWCNTs membrane, while the HA/SDS/SA-MWCNTs membrane significantly deteriorated the removal of PPCPs. The specific surface area of CNTs played a very important role in the dynamic filtration process of CNT membranes. The removal rate of PPCPs by SWCNTs membranes was almost all above 70% after 120 min's filtration, and a further 10% increase was promoted by SASWCNTs membrane. HA and SDS non-covalent functionalization only slightly deteriorate the removal of PPCPs, and the removal rate of majority of PPCPs by HA-SWCNTs membrane and SDS-SWCNTs membrane remained over 60% and 30%. This work present new insight for the effectiveness of low-pressure CNT membranes in actual application, where the impact of competitive background organic materials on the removal of Low-MW organic pollutants were sometimes overestimated.

关键词 :

Organic dyes Organic dyes PPCPs PPCPs Membrane filtration Membrane filtration Low-pressure carbon nanotube membrane Low-pressure carbon nanotube membrane Carbon nanotube Carbon nanotube

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GB/T 7714 Dong, Mengchan , Guo, Jin , Liu, Qiushan et al. Low-pressure carbon nanotube membrane with different surface properties for the removal of organic dyes and PPCPs [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2023 , 11 (3) .
MLA Dong, Mengchan et al. "Low-pressure carbon nanotube membrane with different surface properties for the removal of organic dyes and PPCPs" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 11 . 3 (2023) .
APA Dong, Mengchan , Guo, Jin , Liu, Qiushan , Zeng, Jia , Xiong, Xinya , Gai, Xiaoli et al. Low-pressure carbon nanotube membrane with different surface properties for the removal of organic dyes and PPCPs . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2023 , 11 (3) .
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Preparation and antifouling performance of low-pressure carbon nanotube membranes based on polydopamine biomimetic modification SCIE
期刊论文 | 2023 , 228 | COLLOIDS AND SURFACES B-BIOINTERFACES
摘要&关键词 引用

摘要 :

In order to investigate the antifouling performance of low-pressure carbon nanotube membranes based on polydopamine (PDA) biomimetic modification, layered multi-walled carbon nanotubes PDA membrane (layered MWCNTs-PDA) and PDA blended MWCNTs membrane (blended PDA/MWCNTs) were prepared. The MWCNTs membranes' antifouling performance and recoverability was significantly improved in filtrating BSA, HA and SA after PDA biomimetic modification, and the total fouling and irreversible fouling were all decreased. Compared with the blended PDA/MWCNTs membrane, the layered MWCNTs-PDA membrane had higher antifouling property as it further improved the electronegativity and hydrophilicity of membrane surface. In addition, denser surface pore size of the layered MWCNTs-PDA membrane can effectively reduce the fouling by trapping foulants on its surface. The combination of PDA biomimetic modification with MWCNTs membrane had a superior antifouling performance and rejection performance in processing NOM and artificial wastewater, and the majority of humic-like foulants could be excluded by the layered MWCNTs-PDA membrane. PDA biomimetic modification alleviated the adhesion of FITC-BSA on the MWCNTs membrane. The layered MWCNTs-PDA membrane especially alleviated the attachment of bacteria and processed excellent antimicrobial ability for bacteria.

关键词 :

Multi-walled carbon nanotube Multi-walled carbon nanotube Dopamine Dopamine Membrane modification Membrane modification Membrane fouling Membrane fouling

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GB/T 7714 Guo, Jin , Xiong, Xinya , Zeng, Jia et al. Preparation and antifouling performance of low-pressure carbon nanotube membranes based on polydopamine biomimetic modification [J]. | COLLOIDS AND SURFACES B-BIOINTERFACES , 2023 , 228 .
MLA Guo, Jin et al. "Preparation and antifouling performance of low-pressure carbon nanotube membranes based on polydopamine biomimetic modification" . | COLLOIDS AND SURFACES B-BIOINTERFACES 228 (2023) .
APA Guo, Jin , Xiong, Xinya , Zeng, Jia , Liu, Qiushan , Wang, Qingshan , Liu, Guohan et al. Preparation and antifouling performance of low-pressure carbon nanotube membranes based on polydopamine biomimetic modification . | COLLOIDS AND SURFACES B-BIOINTERFACES , 2023 , 228 .
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DOM and DON transformation in full-scale wastewater treatment plants: Comparison of autotrophic and heterotrophic nitrogen removal units SCIE
期刊论文 | 2023 , 479 | CHEMICAL ENGINEERING JOURNAL
摘要&关键词 引用

摘要 :

There is limited knowledge regarding the differences and relationships in molecular composition between dissolved organic matters (DOM) and dissolved organic nitrogen (DON) in autotrophic and heterotrophic nitrogen removal processes. In this study, the composition of DOM and DON during two full-scale wastewater treatment plants (WWTPs), an autotrophic nitrogen removal with partial nitrification-anammox process (PN/A) and a heterotrophic nitrogen removal with anaerobic/anoxic/oxic process (A2O), were systematically investigated by using ultraviolet-visible spectroscopy, Excitation-Emission Matrix (EEM) and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). The results indicated that both PN/A and A2O resulted a decrease in molecular diversity and bio-availability of DOM. However, there were distinct variations in DON between the two processes. In PN/A, transformation of DOM and DON was found to be coupled, while there was a lack of correlation observed between DOM and DON in A2O. Pearson correlation analysis revealed that transformation of DOM and DON in WWTPs was associated with microbial roles. During biotreatment, PN/A exhibited a higher metabolic capacity for degrading high bio-available and high aromatic compounds compared to A2O. The autotrophic nitrogen removal unit in PN/A resulted in an increase in molecular weight (MW) of DON, as well as a decrease in bio-availability and unsaturation degree of DON. Therefore, autotrophic nitrogen removal unit may have a positive influence on control of eutrophication and disinfection by-products (DBPs) formation. This study improved the understanding of molecular composition and relationship between DOM and DON, as well as microbial roles on DON transformation within autotrophic and heterotrophic nitrogen removal processes.

关键词 :

Microbial role Microbial role Fourier transform ion cyclotron resonance mass Fourier transform ion cyclotron resonance mass Dissolved organic matter Dissolved organic matter Mainstream anammox Mainstream anammox Dissolved organic nitrogen Dissolved organic nitrogen spectrometry spectrometry Molecular-level Molecular-level

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GB/T 7714 Zhou, Tong , Guo, Jin , Liu, Qiushan et al. DOM and DON transformation in full-scale wastewater treatment plants: Comparison of autotrophic and heterotrophic nitrogen removal units [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 479 .
MLA Zhou, Tong et al. "DOM and DON transformation in full-scale wastewater treatment plants: Comparison of autotrophic and heterotrophic nitrogen removal units" . | CHEMICAL ENGINEERING JOURNAL 479 (2023) .
APA Zhou, Tong , Guo, Jin , Liu, Qiushan , Liu, Yuru , Wu, Wenjun , Wang, Yufei et al. DOM and DON transformation in full-scale wastewater treatment plants: Comparison of autotrophic and heterotrophic nitrogen removal units . | CHEMICAL ENGINEERING JOURNAL , 2023 , 479 .
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The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM SCIE
期刊论文 | 2021 , 627 | JOURNAL OF MEMBRANE SCIENCE
WoS核心集被引次数: 17
摘要&关键词 引用

摘要 :

In this study, the combination effect of preozonation and carbon nanotubes (CNTs) layer modification on lowpressure membrane (LPM) fouling control was systematically investigated. To understand the alleviation mechanism of the hybrid process, natural organic matter (NOM) from IHSS and effluent organic matter (EfOM) from actual sewage effluent were both selected as the typical organic foulants presented in actual surface water and wastewater. A dead-end continuous flow model combined with programmable logic control system was used to operate four membrane filtration units and their backwash processes. With a constant permeates flux, the fouling resistant of CNT modified LPM after preozonation could be evaluated according to the increase in transmembrane pressure (TMP). The results revealed that the hybrid approach of preozonation and CNTs modification could significantly improve the anti-fouling ability of LPM, reduce the backwash frequency, and improve the reversibility of membrane fouling. During the filtration of EfOM and NOM, preozonation improved the water treatment capacity of the CNTs modified membranes. The experiment of mass balance revealed that preozonation enhanced the recoverability of CNTs modified membrane and greatly increased its operation time in treating EfOM and NOM. The molecular weight distribution as well as EEM analysis demonstrated the dissimilar characteristics of EfOM and NOM, which caused the different treatment efficiency by preozonation and CNT modification. The mechanism of EfOM/NOM fouling on LPM was summarized as the primary blocking by medium-MW EfOM/NOM. CNTs modification had a better effect on the control of LPM fouling when treating EfOM, as it removed the medium-MW EfOM by adsorption and prevented the pores blockage of the original PVDF membrane. Preozonation had a better effect on the control of LPM fouling when treating NOM, as it greatly changed the MWD of NOM by removing medium-MW NOM. The combination effect of the hybrid preozonation and CNTs modification resulted in the most effective fouling control of LPM by both decreasing the medium-MW and large-MW EfOM/NOM. At the same time, it decreased irreversible fouling related with membrane pore blocking. The hybrid approach demonstrated its promising application for LPM fouling control in actual sewage water and surface water treatment process.

关键词 :

Membrane fouling Membrane fouling Low-pressure membrane (LPM) Low-pressure membrane (LPM) Effluent organic matter (EfOM) Effluent organic matter (EfOM) Preozonation Preozonation Carbon nanotubes (CNTs) Carbon nanotubes (CNTs) Natural organic matter (NOM) Natural organic matter (NOM)

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GB/T 7714 Guo, Jin , Zhu, Xuedong , Wang, Qingshan et al. The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM [J]. | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 .
MLA Guo, Jin et al. "The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM" . | JOURNAL OF MEMBRANE SCIENCE 627 (2021) .
APA Guo, Jin , Zhu, Xuedong , Wang, Qingshan , Liu, Weiyan , Wang, Yu . The combination effect of preozonation and CNTs layer modification on low-pressure membrane fouling control in treating NOM and EfOM . | JOURNAL OF MEMBRANE SCIENCE , 2021 , 627 .
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一种改性多壁碳纳米管及其低压膜和制备方法、应用 incoPat
专利 | 2021-04-14 | CN202110401717.7
摘要&关键词 引用

摘要 :

本发明属于多壁碳纳米管技术领域,本发明提供了一种改性多壁碳纳米管的制备方法,将多壁碳纳米管和腐殖酸溶液进行超声处理,得到改性多壁碳纳米管分散液;将改性多壁碳纳米管分散液中的溶剂去除,得到改性多壁碳纳米管。本发明还通过将改性多壁碳纳米管分散液采用微滤多孔膜进行固液分离,得到改性多壁碳纳米管低压膜。本发明的制备方法对多壁碳纳米管结构和性能不造成任何破坏,同时避免了多壁碳纳米管进入水环境的生态风险。本发明的改性多壁碳纳米管及其低压膜用于去除水溶液中的亚甲基蓝染料,去除方法简单,易于实现,成本低,效率高。

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GB/T 7714 郭瑾 , 王钰 . 一种改性多壁碳纳米管及其低压膜和制备方法、应用 : CN202110401717.7[P]. | 2021-04-14 .
MLA 郭瑾 et al. "一种改性多壁碳纳米管及其低压膜和制备方法、应用" : CN202110401717.7. | 2021-04-14 .
APA 郭瑾 , 王钰 . 一种改性多壁碳纳米管及其低压膜和制备方法、应用 : CN202110401717.7. | 2021-04-14 .
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Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency SCIE
期刊论文 | 2021 , 12 | FRONTIERS IN NEUROLOGY
WoS核心集被引次数: 6
摘要&关键词 引用

摘要 :

The inositol polyphosphate-5-phosphatase E (Inpp5e) gene is located on chromosome 9q34.3. The enzyme it encodes mainly hydrolyzes the 5-phosphate groups of phosphatidylinositol (3,4,5)-trisphosphate (PtdIns (3,4,5) P3) and phosphatidylinositol (4,5)-bisphosphate (PtdIns (4,5)P2), which are closely related to ciliogenesis and embryonic neurodevelopment, through mechanisms that are largely unknown. Here we studied the role of Inpp5e gene in ciliogenesis during embryonic neurodevelopment using inositol-deficiency neural tube defects (NTDs) mouse and cell models. Confocal microscopy and scanning electron microscope were used to examine the number and the length of primary cilia. The dynamic changes of Inpp5e expression in embryonic murine brain tissues were observed during Embryonic Day 10.5-13.5 (E 10.5-13.5). Immunohistochemistry, western blot, polymerase chain reaction (PCR) arrays were applied to detect the expression of Inpp5e and cilia-related genes of the embryonic brain tissues in inositol deficiency NTDs mouse. Real-time quantitative PCR (RT-qPCR) was used to validate the candidate genes in cell models. The levels of inositol and PtdIns(3,4) P2 were measured using gas chromatography-mass spectrometry (GC-MS) and enzyme linked immunosorbent assay (ELISA), respectively. Our results showed that the expression levels of Inpp5e gradually decreased in the forebrain tissues of the control embryos, but no stable trend was observed in the inositol deficiency NTDs embryos. Inpp5e expression in inositol deficiency NTDs embryos was significantly decreased compared with the control tissues. The expression levels of Inpp5e gene and the PtdIns (3,4) P2 levels were also significantly decreased in the inositol deficient cell model. A reduced number and length of primary cilia were observed in NIH3T3 cells when inositol deficient. Three important cilia-related genes (Ift80, Mkks, Smo) were down-regulated significantly in the inositol-deficient NTDs mouse and cell models, and Smo was highly involved in NTDs. In summary, these findings suggested that down-regulation of Inpp5e might be associated with abnormal ciliogenesis during embryonic neurodevelopment, under conditions of inositol deficiency.

关键词 :

gene expression gene expression embryonic development embryonic development cilia cilia phosphoinositide 5-phosphatase phosphoinositide 5-phosphatase inositol inositol neural tube defects neural tube defects

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GB/T 7714 Yue, Huixuan , Li, Shen , Qin, Jiaxing et al. Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency [J]. | FRONTIERS IN NEUROLOGY , 2021 , 12 .
MLA Yue, Huixuan et al. "Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency" . | FRONTIERS IN NEUROLOGY 12 (2021) .
APA Yue, Huixuan , Li, Shen , Qin, Jiaxing , Gao, Tingting , Lyu, Jianjun , Liu, Yu et al. Down-Regulation of Inpp5e Associated With Abnormal Ciliogenesis During Embryonic Neurodevelopment Under Inositol Deficiency . | FRONTIERS IN NEUROLOGY , 2021 , 12 .
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Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control SCIE
期刊论文 | 2021 , 11 (5) | MEMBRANES
WoS核心集被引次数: 6
摘要&关键词 引用

摘要 :

Polyethylene glycol (PEG) non-covalent-functionalized multi-walled carbon nanotubes (MWCNT) membrane were prepared by vacuum filtration. The dispersion and stability of MWCNT non-covalent functionalized with PEG were all improved. TEM characterization and XPS quantitative analysis proved that the use of PEG to non-covalent functionalize MWCNT was successful. SEM image analysis confirmed that the pore size of PEG-MWCNT membrane was more concentrated and distributed in a narrower range of diameter. Contact angle measurement demonstrated that PEG non-covalent functionalization greatly enhanced the hydrophilicity of MWCNT membranes. The results of pure water flux showed that the PEG-MWCNT membranes could be categorized into low pressure membrane. PEG-MWCNT membrane had a better effect on the removal of humic acid (HA) and a lower TMP growth rate compared with a commercial 0.01-mu m PVDF ultrafiltration membrane. During the filtration of bovine serum albumin (BSA), the antifouling ability of PEG-MWCNT membranes were obviously better than the raw MWCNT membranes. The TMP recovery rate of PEG-MWCNT membrane after cross flushing was 79.4%, while that of raw MWCNT-(COOH) and MWCNT membrane were only 14.9% and 28.3%, respectively. PEG non-covalent functionalization improved the antifouling ability of the raw MWCNT membranes and reduced the irreversible fouling, which effectively prolonged the service life of MWCNT membrane.

关键词 :

membrane fouling membrane fouling multi-walled carbon nanotubes multi-walled carbon nanotubes polyethylene glycol polyethylene glycol non-covalent functionalization non-covalent functionalization low-pressure membrane low-pressure membrane

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GB/T 7714 Wang, Yu , Dong, Mengchan , Xiong, Xinya et al. Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control [J]. | MEMBRANES , 2021 , 11 (5) .
MLA Wang, Yu et al. "Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control" . | MEMBRANES 11 . 5 (2021) .
APA Wang, Yu , Dong, Mengchan , Xiong, Xinya , Gai, Xiaoli , Zeng, Jia , Luan, Guirong et al. Preparation of Ultrafiltration Membrane by Polyethylene Glycol Non-Covalent Functionalized Multi-Walled Carbon Nanotubes: Application for HA Removal and Fouling Control . | MEMBRANES , 2021 , 11 (5) .
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