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摘要 :
This paper presents an up-to-date overview of the various advanced materials as adsorbent used in the recovery of precious metals from wastewater. The precious metals concentrated here include gold, silver, palladium and platinum, whose recovery is interesting mainly due to their vast industrial applications and high market prices. Among various methods, adsorption approach is one of the most efficient techniques for the recovery of precious metal ions from aqueous solutions. There are a number of absorbents such as carbon materials, metal-organic frameworks (MOFs), biopolymers, silicas, resins, and transition-metal sulfides, which have been developed and explored to efficient recovery of precious metal ions from wastewater. Thermodynamics and kinetics were further discussed for exploring the adsorption mechanism of precious metal ions in these advanced materials. It was found that the adsorption process of these metals is mostly spontaneous (Delta G < 0) and endothermic (Delta H > 0) in nature. This review would contribute to the development of advanced materials for recovery of precious metals from secondary sources such as wastewater.
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GB/T 7714 | Guo, Jiaqi , Wu, Yufeng , Wang, Zhihui et al. Review: adsorbents for the recovery of precious metals from wastewater [J]. | JOURNAL OF MATERIALS SCIENCE , 2022 , 57 (24) : 10886-10911 . |
MLA | Guo, Jiaqi et al. "Review: adsorbents for the recovery of precious metals from wastewater" . | JOURNAL OF MATERIALS SCIENCE 57 . 24 (2022) : 10886-10911 . |
APA | Guo, Jiaqi , Wu, Yufeng , Wang, Zhihui , Yu, Jiamei , Li, Jian-Rong . Review: adsorbents for the recovery of precious metals from wastewater . | JOURNAL OF MATERIALS SCIENCE , 2022 , 57 (24) , 10886-10911 . |
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摘要 :
The separation of ethane from ethylene is an important but challenging process in the chemical industry because of their similar physicochemical properties. Generally, the adsorbents for C2H6/C2H4 separation require an appropriate and relatively small aperture. Herein, we report two dynamic pillar layered metal-organic frameworks (MOFs) BUT-111 and BUT-112 with isomorphic frameworks but different degrees of interpenetration for efficient C2H4 purification. The dynamic behavior makes both the activated MOFs exhibit ultramicropores and reversed order adsorption behavior for C2H6 and C2H4, which could obtain highly purified C2H4 in one step from the C2H6/C2H4 mixture. BUT 111 and BUT-112 could work in a wide temperature range, and with the decrease in temperature, the C2H6/C2H4 selectivity would increase. Moreover, the degree of interpenetration could be well controlled by the synthetic temperature, and the increase in the interpenetration degree of BUT-112 enhanced the C2H4 purification effectively.
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GB/T 7714 | Li, Yi , Xie, Yabo , Zhang, Xin et al. Enhancing Ethane/Ethylene Separation Performance in Two Dynamic MOFs by Regulating Temperature-Controlled Structural Interpenetration [J]. | INORGANIC CHEMISTRY , 2022 , 62 (12) : 4762-4769 . |
MLA | Li, Yi et al. "Enhancing Ethane/Ethylene Separation Performance in Two Dynamic MOFs by Regulating Temperature-Controlled Structural Interpenetration" . | INORGANIC CHEMISTRY 62 . 12 (2022) : 4762-4769 . |
APA | Li, Yi , Xie, Yabo , Zhang, Xin , Velasco, Ever , Chen, Qiang , Li, Jian-Rong . Enhancing Ethane/Ethylene Separation Performance in Two Dynamic MOFs by Regulating Temperature-Controlled Structural Interpenetration . | INORGANIC CHEMISTRY , 2022 , 62 (12) , 4762-4769 . |
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摘要 :
Metal-organic frameworks (MOFs) provide an ideal platform for ion exchange due to their high porosity and structural designability; however, developing MOFs that have the essential characteristics for ion exchange remains a challenge. These crucial features include fast kinetics, selectivity, and stability. We present two anionic isomers, DGIST-2 (2D) and DGIST-3 (3D), comprising distinctly arranged 5-(1,8-naphthalimido)-isophthalate ligands and In3+ cations. Interestingly, in protic solvents, DGIST-2 transforms into a hydrolytically stable crystalline phase, DGIST-2'. DGIST-2' and DGIST-3 exhibit rapid Cs+ adsorption kinetics, as well as high Cs+ affinity in the presence of competing cations. The mechanism for rapid and selective sorption is explored based on the results of single-crystal X-ray diffraction analysis of Cs+-incorporated DGIST-3. In Cs+-containing solutions, the loosely incorporated dimethylammonium countercation of the anionic framework is replaced by Cs+, which is held in the hydrophobic cavity by supramolecular ion-ion and cation-pi interactions.
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GB/T 7714 | Jin, Kangwoo , Wu, Xue-Qian , Chen, Ying-Pin et al. Rapid Cs+ Capture via Multiple Supramolecular Interactions in Anionic Metal-Organic Framework Isomers [J]. | INORGANIC CHEMISTRY , 2022 , 61 (4) : 1918-1927 . |
MLA | Jin, Kangwoo et al. "Rapid Cs+ Capture via Multiple Supramolecular Interactions in Anionic Metal-Organic Framework Isomers" . | INORGANIC CHEMISTRY 61 . 4 (2022) : 1918-1927 . |
APA | Jin, Kangwoo , Wu, Xue-Qian , Chen, Ying-Pin , Park, In-Hyeok , Li, Jian-Rong , Park, Jinhee . Rapid Cs+ Capture via Multiple Supramolecular Interactions in Anionic Metal-Organic Framework Isomers . | INORGANIC CHEMISTRY , 2022 , 61 (4) , 1918-1927 . |
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摘要 :
The illegal usage of antibiotics as veterinary drugs is an increasing threat for human health. The specific sensing of antibiotics with different toxicity levels is of high challenge, and mainly relies on expensive, time-consuming, and complex instruments. To realize specific sensing by rapid and handy optical sensors, a metal-organic framework (MOF) based dual sensor system is herein developed using two MOF materials BUT-128 and BUT-129 with high sensing selectivity and sensitivity. BUT-128 and BUT-129 exhibit the lowest limit of detection (LOD) towards chloramphenicol and furazolidone among reported MOF sensors. The corresponding dual sensor system with enriched signal readouts realized specific sensing of the strictly forbidden antibiotics (chloramphenicol and nitrofurans) from other regulated veterinary drugs including thiamphenicol, a structural analog of chloramphenicol. Besides, the strategy of this work is expected to flourish the development of optical sensors with high specificity for environment and food safety purposes.
关键词 :
dual sensor dual sensor metal-organic frameworks metal-organic frameworks fluorescence quenching fluorescence quenching antibiotics antibiotics specific sensing specific sensing
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GB/T 7714 | Zhao, Yan-Long , Chen, Qiang , Lv, Jie et al. Specific sensing of antibiotics with metal-organic frameworks based dual sensor system [J]. | NANO RESEARCH , 2022 , 15 (7) : 6430-6437 . |
MLA | Zhao, Yan-Long et al. "Specific sensing of antibiotics with metal-organic frameworks based dual sensor system" . | NANO RESEARCH 15 . 7 (2022) : 6430-6437 . |
APA | Zhao, Yan-Long , Chen, Qiang , Lv, Jie , Xu, Ming-Ming , Zhang, Xin , Li, Jian-Rong . Specific sensing of antibiotics with metal-organic frameworks based dual sensor system . | NANO RESEARCH , 2022 , 15 (7) , 6430-6437 . |
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摘要 :
The separation of acetylene (C2H2) from carbon dioxide (CO2) and methane (CH4) is of great significance, but remains challenging, because of their similar physicochemical properties, and it currently has received substantial research interest by using adsorptive separation based on metal-organic frameworks (MOFs). Herein, a new microporous Cu-MOF, [Cu(5-OH-IPA2-)-(DPYA)(H2O)] (BUT-318, where 5-OH-IPA2- = 5-hydroxyisoph-thalate and DPYA = 4,4 '-dipyridylamine) has been synthesized successfully under solvothermal conditions, which exhibits excellent separation performance for C2H2/CO2 and C2H2/CH4 gas mixtures. The presence of Cu(II) open metal sites and different Lewis base sites (-OH and -NH) make the activated BUT-318 efficiently bind C2H2 and exhibit high adsorption capacity under low pressure (24.52 and 9.1 cm3 g-1 under 0.01 bar, at 273 and 298 K, respectively). The corresponding IAST (ideal adsorbed solution theory) selectivity was 9.8 and 244.3 at 273 K and 1 bar for an equimolar C2H2/CO2 and C2H2/CH4 mixture. The separation performance and reusability under dynamic conditions were also confirmed by column breakthrough experiments, making BUT-318a a promising candidate for the practical C2H2 separation.
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GB/T 7714 | Xu, Zi-Chao , Yu, Jiamei , Zhang, Peng-Dan et al. Efficient C2H2 Separation from CO2 and CH4 within a Microporous Metal-Organic Framework of Multiple Functionalities [J]. | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2022 . |
MLA | Xu, Zi-Chao et al. "Efficient C2H2 Separation from CO2 and CH4 within a Microporous Metal-Organic Framework of Multiple Functionalities" . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2022) . |
APA | Xu, Zi-Chao , Yu, Jiamei , Zhang, Peng-Dan , Zhao, Yan-Long , Wu, Xue-Qian , Zhao, Minjian et al. Efficient C2H2 Separation from CO2 and CH4 within a Microporous Metal-Organic Framework of Multiple Functionalities . | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH , 2022 . |
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摘要 :
The addition of 3% of CeO2 improved the NH3 adsorption performance, the NO oxidation, low temperature NO conversion, and the sulfur and water-resistance of the V2O5-WO3/TiO2 catalyst, established a protective layer against catalyst poisoning. With the increase in the regeneration temperature and time, the deactivation rate gradually increased, and the layered filling could slow down the catalyst's overall deactivation rate. In addition, the BET, SEM, XRD, FT-IR, XPS, TG, H2-TPR, and NH3-TPD results showed that the upper layer catalyst first contacted the SO2 and H2O in the flue gases, leading to the deposition of by-products containing NH4+ and SO42− at the highest level in this catalyst layer. Also, the decrease in the specific surface area and pore volume was most obvious. The experiment selected the NH4+ and SO42− deposition amounts as characteristic indices for judging the catalyst poisoning degree, and they also revealed the catalytic reaction path of the CeO2 on the surface of the V2O5-WO3/TiO2 catalyst. © 2020 Elsevier B.V.
关键词 :
Ammonia Ammonia Catalysis Catalysis Catalyst poisoning Catalyst poisoning Cerium oxide Cerium oxide Deposition Deposition Selective catalytic reduction Selective catalytic reduction Sulfur dioxide Sulfur dioxide Temperature Temperature Titanium compounds Titanium compounds Tungsten compounds Tungsten compounds Vanadium pentoxide Vanadium pentoxide
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GB/T 7714 | Liang, Quanming , Li, Jian , Yue, Tao . Promotional effect of CeO2 on low-temperature selective catalytic reduction of NO by NH3 over V2O5-WO3/TiO2 catalysts [J]. | Environmental Technology and Innovation , 2021 , 21 . |
MLA | Liang, Quanming et al. "Promotional effect of CeO2 on low-temperature selective catalytic reduction of NO by NH3 over V2O5-WO3/TiO2 catalysts" . | Environmental Technology and Innovation 21 (2021) . |
APA | Liang, Quanming , Li, Jian , Yue, Tao . Promotional effect of CeO2 on low-temperature selective catalytic reduction of NO by NH3 over V2O5-WO3/TiO2 catalysts . | Environmental Technology and Innovation , 2021 , 21 . |
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摘要 :
Bio-trickling filters (BTFs) can be used to remediate pollution by volatile organic compounds such as toluene. To investigate the effect of filler voidage on pressure drop (Delta P), two parallel BTFs were constructed using ceramsite with different voidages (47.5% for BTF1 and 55% for BTF2) and inoculated with Fusarium fungus to purify toluene. Commutation and stagnation operations were explored as ways to relieve Delta P. In BTF1, commutation temporarily relieved Delta P and maintained it for 7 days. Implementing stagnation on the 178th day for 69 days effectively reduced the Delta P from 720 Pa/m to below 20 Pa/m, which was maintained for 36 days. Compared with BTF1, the filler in BTF2 effectively delayed the increase in Delta P for 70 days or more and ensured stable operation for as long as 174 days. High-throughput sequencing revealed that Fusarium was mainly replaced by Protoctista, Fronsecaea and other fungi in both BTFs, although there were significant differences in their microbial communities. The influences of commutation and stagnation operations on fungal evolution were more obvious in BTF2, in relation to both time and space. The results provide guidance for designing better BTFs to treat hazardous pollutants. (C) 2021 Elsevier Ltd. All rights reserved.
关键词 :
Bio-trickling filter Bio-trickling filter Blockage Blockage Fusarium Fusarium High-throughput High-throughput Voidage Voidage
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GB/T 7714 | Zhang, Yun , Liu, Jia , Li, Jian et al. Effects of filler voidage on pressure drop and microbial community evolution in fungal bio-trickling filters [J]. | CHEMOSPHERE , 2021 , 273 . |
MLA | Zhang, Yun et al. "Effects of filler voidage on pressure drop and microbial community evolution in fungal bio-trickling filters" . | CHEMOSPHERE 273 (2021) . |
APA | Zhang, Yun , Liu, Jia , Li, Jian , Yue, Tao . Effects of filler voidage on pressure drop and microbial community evolution in fungal bio-trickling filters . | CHEMOSPHERE , 2021 , 273 . |
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摘要 :
Given the current global energy and environmental issues resulting from the fast pace of industrialization, the discovery of new functional materials has become increasingly imperative in order to advance science and technology and address the associated challenges. The boom in metal-organic frameworks (MOFs) and MOF-derived materials in recent years has stimulated profound interest in exploring their structures and applications. The preparation, characterization, and processing of MOF materials are the basis of their full engagement in industrial implementation. With intensive research in these topics, it is time to promote the practical utilization of MOFs on an industrial scale, such as for green chemical engineering, by taking advantage of their superior functions. Many famous MOFs have already demonstrated superiority over traditional materials in solving real-world problems. This review starts with the basic concept of MOF chemistry and ends with a discussion of the industrial production and exploitation of MOFs in several fields. Its goal is to provide a general scope of application to inspire MOF researchers to convert their focus on academic research to one on practical applications. After the obstacles of cost, scale-up preparation, processability, and stability have been overcome, MOFs and MOF-based devices will gradually enter the factory, become a part of our daily lives, and help to create a future based on green production and green living. (c) 2021 THE AUTHORS. Published by Elsevier LTD on behalf of Chinese Academy of Engineering and Higher Education Press Limited Company. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词 :
Application Application Green chemical engineering Green chemical engineering Metal-organic frameworks (MOFs) Metal-organic frameworks (MOFs)
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GB/T 7714 | Kong, Xiang-Jing , Li, Jian-Rong . An Overview of Metal-Organic Frameworks for Green Chemical Engineering [J]. | ENGINEERING , 2021 , 7 (8) : 1115-1139 . |
MLA | Kong, Xiang-Jing et al. "An Overview of Metal-Organic Frameworks for Green Chemical Engineering" . | ENGINEERING 7 . 8 (2021) : 1115-1139 . |
APA | Kong, Xiang-Jing , Li, Jian-Rong . An Overview of Metal-Organic Frameworks for Green Chemical Engineering . | ENGINEERING , 2021 , 7 (8) , 1115-1139 . |
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摘要 :
A series of Pt/TiO2 catalysts were prepared by the impregnation (IM), dry ball mill (DB), or wet ball mill (WB) methods, and their catalytic activity for the oxidation of CO was evaluated. The structure and redox properties of the catalysts were investigated by N-2 desorption, XRD, SEM, TEM, XPS, H-2-TPR, SO2-TPD, and CO chemisorption analysis. It was determined that the preparation method affects the physical structure of the catalyst and the particle size and dispersion of Pt on the catalyst surface. The catalyst prepared by the impregnation method had a more suitable physical structure than the other catalysts, with a smaller particle size, a higher dispersion of Pt on the surface, and the lowest strength of SO2 adsorption. Pt/TiO2(IM) catalysts presented the best catalytic activity for the oxidation of CO in simulated sintering flue gas at 140 degrees C, as well as better sulfur and water resistance with simulated sintering flue gas containing 50 ppm of SO2 and 15% water vapor.
关键词 :
CO oxidation CO oxidation influence on performances influence on performances preparation method preparation method sulfur and water resistance sulfur and water resistance
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GB/T 7714 | Cai, Jianyu , Yu, Zehui , Li, Jian . Effect of Preparation Methods on the Performance of Pt/TiO2 Catalysts for the Catalytic Oxidation of Carbon Monoxide in Simulated Sintering Flue Gas [J]. | CATALYSTS , 2021 , 11 (7) . |
MLA | Cai, Jianyu et al. "Effect of Preparation Methods on the Performance of Pt/TiO2 Catalysts for the Catalytic Oxidation of Carbon Monoxide in Simulated Sintering Flue Gas" . | CATALYSTS 11 . 7 (2021) . |
APA | Cai, Jianyu , Yu, Zehui , Li, Jian . Effect of Preparation Methods on the Performance of Pt/TiO2 Catalysts for the Catalytic Oxidation of Carbon Monoxide in Simulated Sintering Flue Gas . | CATALYSTS , 2021 , 11 (7) . |
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摘要 :
Water scarcity is a critical issue in desert and arid regions, and atmospheric water harvesting is a potential solution. The challenge is lacking ideal adsorbents that can efficiently capture water from low-humidity air and be regenerated readily. Herein, we report a hydrolytically stable metalorganic framework (MOF), [Cu-2(AD)(2)(SA)] (Cu-AD-SA), with excellent performance in water harvesting. More importantly, this material can be facilely prepared from two easily accessible ligands adenine (HAD) and succinic acid (H(2)SA). Cu-AD-SA has a three-dimensional (3D) framework structure with the crs topology and intersecting channels of similar to 5 angstrom in diameter. The channel surface is decorated by uncoordinated aromatic N atoms, amine groups, and alkyl moieties. Interestingly, Cu-AD-SA shows a high water adsorption capacity of 0.16 g g(-1) at low pressure of 0.2 P/P-0 and 25 degrees C. Furthermore, dynamic water adsorption-desorption cycling experiments demonstrated a stable working capacity of 0.13 g g(-1) for uptaking water from a low-humidity air (water partial pressure: 0.85 kPa, 20% RH at 30 degrees C, 5.3% RH at 55 degrees C) at 30 degrees C and desorption at 55 degrees C. The water adsorption mechanism was also studied by analyzing its single-crystal structure after water loading. The results indicated the existence of strong H-bonding interactions between water molecules and uncoordinated N atoms and amine groups on the framework, which should play an important role in the high adsorption at low pressure. All the above features suggest great potential of Cu-AD-SA for water harvesting in arid regions.
关键词 :
facile preparation facile preparation adenine adenine metal-organic framework metal-organic framework water harvesting water harvesting hydrolytic stability hydrolytic stability
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GB/T 7714 | Wang, Lu , Wang, Kecheng , An, Hao-Tian et al. A Hydrolytically Stable Cu(II)-Based Metal-Organic Framework with Easily Accessible Ligands for Water Harvesting [J]. | ACS APPLIED MATERIALS & INTERFACES , 2021 , 13 (41) : 49509-49518 . |
MLA | Wang, Lu et al. "A Hydrolytically Stable Cu(II)-Based Metal-Organic Framework with Easily Accessible Ligands for Water Harvesting" . | ACS APPLIED MATERIALS & INTERFACES 13 . 41 (2021) : 49509-49518 . |
APA | Wang, Lu , Wang, Kecheng , An, Hao-Tian , Huang, Hongliang , Xie, Lin-Hua , Li, Jian-Rong . A Hydrolytically Stable Cu(II)-Based Metal-Organic Framework with Easily Accessible Ligands for Water Harvesting . | ACS APPLIED MATERIALS & INTERFACES , 2021 , 13 (41) , 49509-49518 . |
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