Query:
学者姓名:康天放
Refining:
Year
Type
Indexed by
Source
Complex
Former Name
Co-Author
Language
Clean All
Abstract :
制备了金纳米粒子-氧化石墨烯(AuNPs-GO)复合物,采用透射电镜(TEM)和紫外-可见吸收光谱(UV-Vis)对其进行了表征。将此复合物修饰到玻碳电极(GCE)表面,再通过Au—S键将巯基修饰的富含鸟嘌呤的DNA链(T30695)自组装到电极表面的金纳米粒子上。T30695可与Pb~(2+)结合形成稳定的平行G-四链体,此G-四链体再与氯化血红素(Hemin)结合形成具有过氧化物酶活性的DNA酶(DNAzyme),基于此制得Pb~(2+)敏感的DNA酶电化学传感器。形成的DNA酶可催化H_2O_2氧化对苯二酚(HQ),实现电化学信号的放大和Pb~(2+)的高灵敏检测。在优化的实验条件下,在...
Keyword :
DNA酶 DNA酶 方波伏安法 方波伏安法 铅离子(Ⅱ) 铅离子(Ⅱ) 传感器 传感器
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 杨瑞 , 康天放 , 鲁理平 et al. 基于DNA酶/AuNPs-GO传感器方波伏安法高灵敏检测Pb~(2+) [J]. | 分析化学 , 2021 , 49 (02) : 309-317 . |
MLA | 杨瑞 et al. "基于DNA酶/AuNPs-GO传感器方波伏安法高灵敏检测Pb~(2+)" . | 分析化学 49 . 02 (2021) : 309-317 . |
APA | 杨瑞 , 康天放 , 鲁理平 , 叶青 . 基于DNA酶/AuNPs-GO传感器方波伏安法高灵敏检测Pb~(2+) . | 分析化学 , 2021 , 49 (02) , 309-317 . |
Export to | NoteExpress RIS BibTex |
Abstract :
随着化石燃料需求的增加,CO2大量排放,温室效应日益严重,目前面临的最大问题是如何经济且高效地捕获CO2.虽然沸石和活性炭等一些传统吸附剂已被广泛应用,但其造价相对较高,因此需要开发廉价且高效的CO2吸附剂.综述了从黏土和废料中开发低成本CO2吸附剂的研究进展,从物理化学方面讨论吸附剂对CO2吸附性能的影响,最后对廉价高效CO2吸附材料进行了展望.
Keyword :
废料 废料 黏土 黏土 CO2吸附剂 CO2吸附剂
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 吴凯 , 武润平 , 叶青 et al. 低成本二氧化碳吸附剂研究进展 [J]. | 化工新型材料 , 2020 , 48 (6) : 24-28 . |
MLA | 吴凯 et al. "低成本二氧化碳吸附剂研究进展" . | 化工新型材料 48 . 6 (2020) : 24-28 . |
APA | 吴凯 , 武润平 , 叶青 , 程水源 , 康天放 . 低成本二氧化碳吸附剂研究进展 . | 化工新型材料 , 2020 , 48 (6) , 24-28 . |
Export to | NoteExpress RIS BibTex |
Abstract :
甲醛(HCHO)是一种典型的挥发性有机化合物(VOCs).空气中的甲醛主要来源于建筑材料、塑料、水泥和油漆等,长时间暴露于含有甲醛的空气中会对人体健康造成严重危害.因此,消除空气中的甲醛是亟待解决的问题.催化氧化是目前较好的去除甲醛的技术方法之一,它能有效地在较低温度下将甲醛氧化成CO_2和H_2O.通常,负载型贵金属(Au, Pt, Pd和Ag)催化剂具有较好的催化氧化甲醛性能,但高成本和易中毒的特性限制了其应用.负载型过渡金属催化剂具有成本低和催化氧化性能良好等特点,是当前研究的热点.而催化剂活性通常与所用载体及其物理性质相关,如晶体结构、化学组成、表面积和热稳定性等.因此,开发合适的载体...
Keyword :
挥发性有机化合物 挥发性有机化合物 HCHO氧化 HCHO氧化 负载型过渡金属催化剂 负载型过渡金属催化剂 过渡金属负载 过渡金属负载 钠化海泡石 钠化海泡石
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 董宁 , 叶青 , 陈梦月 et al. 钠化海泡石负载过渡金属催化剂TM/NaSep(TM=Cu,Fe,Ni,Mn,Co)催化氧化甲醛性能(英文) [J]. | Chinese Journal of Catalysis , 2020 , 41 (11) : 1734-1744 . |
MLA | 董宁 et al. "钠化海泡石负载过渡金属催化剂TM/NaSep(TM=Cu,Fe,Ni,Mn,Co)催化氧化甲醛性能(英文)" . | Chinese Journal of Catalysis 41 . 11 (2020) : 1734-1744 . |
APA | 董宁 , 叶青 , 陈梦月 , 程水源 , 康天放 , 戴洪兴 . 钠化海泡石负载过渡金属催化剂TM/NaSep(TM=Cu,Fe,Ni,Mn,Co)催化氧化甲醛性能(英文) . | Chinese Journal of Catalysis , 2020 , 41 (11) , 1734-1744 . |
Export to | NoteExpress RIS BibTex |
Abstract :
The sodium-treated sepiolite (NaSep)-supported rare earth oxide (RE/NaSep; RE = La, Eu, Dy, and Tm) samples were prepared using the rotary evaporation method. Physicochemical properties of these materials were characterized by XRD, SEM, BET, FTIR, XPS, H-2-TPR, NH3-TPD, and in situ DRIFTS, and their catalytic activities for formaldehyde (HCHO) (2000 ppm) oxidation were evaluated. The results show that loading of the rare earth oxide on NaSep improved its catalytic performance. Among all the samples, Eu/NaSep performed the best, and complete HCHO conversion was achieved at a temperature of 150 degrees C and a gas hourly space velocity of 240,000 mL/(g h); a good catalytic activity was still maintained after 45 h of stability test. The catalytic oxidation mechanism of HCHO was studied using the in situ DRIFTS technique. As a result, the effective and stable catalytic performance of the Eu/NaSep sample was mainly due to the presence of hydroxyl groups on the sepiolite surface and the doped rare earth oxides, which contributed to its high performance. HCHO oxidation underwent via the steps of HCHO + O-2 -> HCOO- + OH- -> H2O + CO2. It is concluded that the optimal catalytic activity of Eu/NaSep was associated with the highest O-ads/O-latt atomic ratio, the largest amount of hydroxyl groups, the highest acidity, and the best reducibility. The present work may provide new insights into the application in the removal of high-concentration HCHO over the rare earth oxides supported on natural low-cost clays.
Keyword :
rare earth oxide rare earth oxide HCHO oxidation HCHO oxidation volatile organic compound volatile organic compound sodium-treated sepiolite sodium-treated sepiolite
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Dong, Ning , Ye, Qing , Chen, Mengyue et al. Catalytic Oxidation of HCHO over the Sodium-Treated Sepiolite-Supported Rare Earth (La, Eu, Dy, and Tm) Oxide Catalysts [J]. | CATALYSTS , 2020 , 10 (3) . |
MLA | Dong, Ning et al. "Catalytic Oxidation of HCHO over the Sodium-Treated Sepiolite-Supported Rare Earth (La, Eu, Dy, and Tm) Oxide Catalysts" . | CATALYSTS 10 . 3 (2020) . |
APA | Dong, Ning , Ye, Qing , Chen, Mengyue , Cheng, Shuiyuan , Kang, Tianfang , Dai, Hongxing . Catalytic Oxidation of HCHO over the Sodium-Treated Sepiolite-Supported Rare Earth (La, Eu, Dy, and Tm) Oxide Catalysts . | CATALYSTS , 2020 , 10 (3) . |
Export to | NoteExpress RIS BibTex |
Abstract :
甲醛(HCHO)是一种典型的挥发性有机化合物(VOCs),空气中的甲醛主要来源于建筑材料、塑料、水泥和油漆等,长时间暴露于含有甲醛的空气中会对人体健康造成严重危害.因此,消除空气中的甲醛是亟待解决的问题.催化氧化是目前较好的去除甲醛的技术方法之一,它能有效地在较低温度下将甲醛氧化成CO2和H2O.通常,负载型贵金属(Au.Pt,Pd和Ag)催化剂具有较好的催化氧化甲醛性能,但高成本和易中毒的特性限制了其应用.负载型过渡金属催化剂具有成本低和催化氧化性能良好等特点,是当前研究的热点.而催化剂活性通常与所用载体及其物理性质相关,如晶体结构、化学组成、表面积和热稳定性等.因此,开发合适的载体,提高过渡金属催化剂的催化性能具有重要意义.海泡石是具有特定官能团和纤维状结构的天然粘土矿物,相比其他类型的硅酸盐粘土,其具有较高的吸附性能和较好的水热稳定性.本文通过浸渍法制备了钠化海泡石(NaSep)负载过渡金属催化剂TM/NaSep GM=Cu,Fe,Ni,Mn,Co),研究了其物理化学性质,考察了其催化氧化甲醛(0.2%)性能.XRD与SEM结果表明,负载过渡金属不影响海泡石原矿的物理结构.比-TPR,NHj-TPD和XPS结果表明,负载过渡金属对催化剂氧化还原性能、酸性和吸附氧能力影响较大.TM/NaSep总酸度与吸附氧能力(Oads/(Olat,+OoH))按以下顺序递减:Cu/NaSep>Fe/NaSep>Mn/NaSep>Ni/NaSep>Co/NaSep.这与催化剂催化氧化甲醛活性顺序一致.在所有样品中,Cu/NaSep表现出最佳的催化氧化甲醛活性,在100(GHSV=240000 mL/(g·h))可以完全氧化甲醛.42 h稳定性测试表明其具有良好的稳定性.综合研究表明,Cu/NaSep催化剂优良的催化活性与其良好的低温还原性、较高的酸度和吸附氧能力等因素有关.原位DRIFTS研究Cu/NaSep催化剂催化氧化甲醛机理表明,首先,甲醛吸附在催化剂表面,然后表面的吸附氧物种将其氧化成
Keyword :
过渡金属负载 过渡金属负载 HCHO氧化 HCHO氧化 钠化海泡石 钠化海泡石 挥发性有机化合物 挥发性有机化合物 负载型过渡金属催化剂 负载型过渡金属催化剂
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 董宁 , 叶青 , 陈梦月 et al. 钠化海泡石负载过渡金属催化剂TM/NaSep(TM=Cu,Fe,Ni,Mn,Co)催化氧化甲醛性能 [J]. | 催化学报 , 2020 , 41 (11) : 1734-1744 . |
MLA | 董宁 et al. "钠化海泡石负载过渡金属催化剂TM/NaSep(TM=Cu,Fe,Ni,Mn,Co)催化氧化甲醛性能" . | 催化学报 41 . 11 (2020) : 1734-1744 . |
APA | 董宁 , 叶青 , 陈梦月 , 程水源 , 康天放 , 戴洪兴 . 钠化海泡石负载过渡金属催化剂TM/NaSep(TM=Cu,Fe,Ni,Mn,Co)催化氧化甲醛性能 . | 催化学报 , 2020 , 41 (11) , 1734-1744 . |
Export to | NoteExpress RIS BibTex |
Abstract :
A molecularly imprinted magnetic sensor with electmluminescent tags (MIP-ECL sensor) was developed for ultrasensing diethylstilbestrol (DES). A strategy is exploited to enhance ECL emission of the [Ru(bpy)(3)](2+)-tripropyl amine (TPrA) system by CdTe@ZnS quantum-dots (QDs) through energy transfer. Magnetically molecularly imprinted nanoparticles (MMIPs NPs) based on Fe3O4@SiO2 carriers are artificial, easily reproducible, and could replace easily inactivated first antibodies for capturing more DES molecules. Functionalized bio-conjugates of single antibody-CdTe@ZnS (Ab-CdTe@ZnS) are for the first time loaded on signal labels of Ru(bpy) +-doped silica nanocomposites (Ru@SiO2) for signal amplification. The final bio-conjugated signal probes are denoted as Ab-DES/CdTe@ZnS-Ru@SiO2. MMIPs beads that have captured antigens are bio-conjugated with antibodylabeled luminescent probes by specific immunoreactive reaction, and then the luminescent immunocomplex generates ECL signal on the magnetic electrode. The logarithm of ECL intensities depend linearly on the logarithm of DES concentrations in the range from 4.8 x 10(-)(4) to 36.0 nM with a detection limit of 0.025 pM. This novel assay is much more sensitive than other MIP sensors, and achieves lower cost and more enhanced stability than other immunosensors. The sensor is significantly potential and has been applied to DES detection in actual environment.
Keyword :
[Ru(bpy)(3)](2+)-doped silica [Ru(bpy)(3)](2+)-doped silica Diethylstilbestrol Diethylstilbestrol Core-shell QDs Core-shell QDs Probe-mode ECL sensor Probe-mode ECL sensor Single antibody sandwich-type Single antibody sandwich-type Magnetically imprinted nanoparticles Magnetically imprinted nanoparticles
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Zhao, Wen-Rui , Xu, Yao-Hua , Kang, Tian-Fang et al. Sandwich magnetically imprinted immunosensor for electrochemiluminescence ultrasensing diethylstilbestrol based on enhanced luminescence of Ru@SiO2 by CdTe@ZnS quantum dots [J]. | BIOSENSORS & BIOELECTRONICS , 2020 , 155 . |
MLA | Zhao, Wen-Rui et al. "Sandwich magnetically imprinted immunosensor for electrochemiluminescence ultrasensing diethylstilbestrol based on enhanced luminescence of Ru@SiO2 by CdTe@ZnS quantum dots" . | BIOSENSORS & BIOELECTRONICS 155 (2020) . |
APA | Zhao, Wen-Rui , Xu, Yao-Hua , Kang, Tian-Fang , Zhang, Xiao , Liu, Hao , Ming, An-Jie et al. Sandwich magnetically imprinted immunosensor for electrochemiluminescence ultrasensing diethylstilbestrol based on enhanced luminescence of Ru@SiO2 by CdTe@ZnS quantum dots . | BIOSENSORS & BIOELECTRONICS , 2020 , 155 . |
Export to | NoteExpress RIS BibTex |
Abstract :
Lanthanide (La, Ce, Nd, Gd, Tb, Ho or Lu)-doped Cu-SAPO-18 samples were prepared using the ion-exchange method. Physicochemical properties of the samples were systematically characterized by a number of analytical techniques, and the effects of lanthanide doping on catalytic activity and hydrothermal stability of the Cu-SAPO-18 catalysts for the NH3-SCR reaction were examined. It is shown that the doping of lanthanide elements could affect the interaction between the active components (copper ions) and the AEI-structured SAPO-18 support. The inclusion of some lanthanides significantly slowed down hydrolysis of the catalyst during hydrothermal aging treatment process, leading to an enhanced catalytic activity at both low and high temperatures and hydrothermal stability. In particular, Ce doping promoted the Cu2+ ions to migrate to the energetically favorable sites for enhancement in catalytic activity, whereas the other lanthanide ions exerted little or an opposite effect on the migration of Cu2+ ions. Additionally, Ce doping could improve hydrothermal stability of the Cu-SAPO-18 catalyst by weakening hydrolysis of the catalyst during the hydrothermal aging treatment process. Ce doping increased the catalytic activity of Cu-SAPO-18 at low and high temperatures, which was attributed to modifications of the redox and/or isolated Cu2+ active centers.
Keyword :
NH3-SCR NH3-SCR selective catalytic reduction selective catalytic reduction lanthanide doping lanthanide doping SAPO-18-incorporated Cu catalyst SAPO-18-incorporated Cu catalyst hydrothermal stability hydrothermal stability
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Gao, Qi , Han, Shuai , Ye, Qing et al. Effects of Lanthanide Doping on the Catalytic Activity and Hydrothermal Stability of Cu-SAPO-18 for the Catalytic Removal of NOx (NH3-SCR) from Diesel Engines [J]. | CATALYSTS , 2020 , 10 (3) . |
MLA | Gao, Qi et al. "Effects of Lanthanide Doping on the Catalytic Activity and Hydrothermal Stability of Cu-SAPO-18 for the Catalytic Removal of NOx (NH3-SCR) from Diesel Engines" . | CATALYSTS 10 . 3 (2020) . |
APA | Gao, Qi , Han, Shuai , Ye, Qing , Cheng, Shuiyuan , Kang, Tianfang , Dai, Hongxing . Effects of Lanthanide Doping on the Catalytic Activity and Hydrothermal Stability of Cu-SAPO-18 for the Catalytic Removal of NOx (NH3-SCR) from Diesel Engines . | CATALYSTS , 2020 , 10 (3) . |
Export to | NoteExpress RIS BibTex |
Abstract :
CMK-3 and C-FDU-15 samples were synthesized using hard-templating and evaporation-induced self-assembly (EISA) methods, respectively. The pore structures of CMK-3 and C-FDU-15 as well as commercial activated carbon were characterized by means of X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and N-2 adsorption-desorption. Adsorption of NO was investigated by means of thermogravimetric analysis, temperature-programmed desorption of NO + O-2, and in situ diffuse reflectance Fourier transform infrared spectroscopy. The results show that the CMK-3 and C-FDU-15 materials possessed ordered and uniform structures. The co-adsorption capacity of NO and O-2 decreased in the sequence CMK-3 (88.6 mg/g) > C-FDU-15 (71.7 mg/g) > AC (25.3 mg/g). There were two main adsorption species on CMK-3 and C-FDU-15: nitrite and nitrate. Nitrite is converted to nitrate easily. However, the adsorption species were more complex on AC, with nitrite being the main species. Moreover, CMK-3 and C-FDU-15 exhibit excellent regeneration efficiency compared with AC. The excellent NO adsorption performance of CMK-3 and C-FDU-15 was associated with their ordered mesoporous structures and high surface areas. The research provides more options for NO adsorption in the future. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Keyword :
CMK-3 CMK-3 Regeneration performance Regeneration performance C-FDU-15 C-FDU-15 Ordered mesoporous carbon material Ordered mesoporous carbon material NO adsorption species NO adsorption species
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | Wu, Runping , Ye, Qing , Wu, Kai et al. Adsorption performance of CMK-3 and C-FDU-15 in NO removal at low temperature [J]. | JOURNAL OF ENVIRONMENTAL SCIENCES , 2020 , 87 : 289-298 . |
MLA | Wu, Runping et al. "Adsorption performance of CMK-3 and C-FDU-15 in NO removal at low temperature" . | JOURNAL OF ENVIRONMENTAL SCIENCES 87 (2020) : 289-298 . |
APA | Wu, Runping , Ye, Qing , Wu, Kai , Cheng, Shuiyuan , Kang, Tianfang , Dai, Hongxing . Adsorption performance of CMK-3 and C-FDU-15 in NO removal at low temperature . | JOURNAL OF ENVIRONMENTAL SCIENCES , 2020 , 87 , 289-298 . |
Export to | NoteExpress RIS BibTex |
Abstract :
In this study, a novel electrochemiluminescence (ECL) biosensor based on a CdSe@CdS quantum dot (QD)-functionalized MoS2-modified electrode was developed for the sensitive detection of mercury ions. Polycationic poly(diallyldimethylammonium chloride) (PDDA) and negatively charged QDs were adsorbed on the surface of MoS2, in sequence, to form the QD-PDDA-MoS2 composites, which were employed as matrices for immobilizing thymine-rich DNA sequences (DNA(1)). The gold nanoparticles (AuNPs) were combined with another type of thymine-rich DNA sequences (DNA(2)) and glucose oxidase (GOD) to prepare the GOD-AuNP-DNA(2) conjugates. The composites were characterized via UV-visible absorption spectroscopy, fluorescence and transmission electron microscopy. A thymine-Hg2+-thymine complex was formed through Hg2+ mismatching with DNA(1) and DNA(2). GOD was, therefore, modified onto the electrode surface. GOD catalyzed the reduction of dissolved oxygen by glucose to produce hydrogen peroxide, which was a co-reactant of the QDs. The electrochemiluminescence signal of the biosensor increased linearly with the increase in the Hg2+ concentration over the range from 1.0 x 10(-12) to 1.0 x 10(-6) M with a detection limit of 1 x 10(-13) M. The reproducibility, stability and specificity of the biosensor was also studied. The biosensor was used to determine Hg2+ in a real water sample and satisfactory results were obtained.
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | He, Zhang-Jin , Kang, Tian-Fang , Lu, Li-Ping et al. An electrochemiluminescence sensor based on CdSe@CdS-functionalized MoS2 and a GOD-labeled DNA probe for the sensitive detection of Hg(ii) [J]. | ANALYTICAL METHODS , 2020 , 12 (4) : 491-498 . |
MLA | He, Zhang-Jin et al. "An electrochemiluminescence sensor based on CdSe@CdS-functionalized MoS2 and a GOD-labeled DNA probe for the sensitive detection of Hg(ii)" . | ANALYTICAL METHODS 12 . 4 (2020) : 491-498 . |
APA | He, Zhang-Jin , Kang, Tian-Fang , Lu, Li-Ping , Cheng, Shui-Yuan . An electrochemiluminescence sensor based on CdSe@CdS-functionalized MoS2 and a GOD-labeled DNA probe for the sensitive detection of Hg(ii) . | ANALYTICAL METHODS , 2020 , 12 (4) , 491-498 . |
Export to | NoteExpress RIS BibTex |
Abstract :
为了有效去除大气污染物中的CO,使用氧化还原法制备层状锰氧化物MnOx-L,并用离子交换法制备了负载不同质量分数Fe的Fex/MnOx-L催化剂.使用扫描电子显微镜(scanning electron microscope,SEM)、X射线衍射(X-ray diffraction,XRD)技术、比表面积测定(brunauer emmett teller,BET)、热重分析(thermogravimetric analysis,TGA)、氢气程序升温还原(hydrogen temperature-programmed reduction,H2-TPR)、氧气程序升温脱附(oxygen temperature-programmed,O2-TPD)、X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)等技术表征催化剂形貌、结构及性能.层状锰氧化物MnOx-L具有典型的八面体层状结构,Fe负载对催化剂结构影响不大,但对其理化性质产生了影响.Fe负载改变了催化剂的还原性及其表面的m(Fe2+)/m(Fe3+)和m(Oads)/m(Olatt)比例,提高了样品的催化活性.在所有Fex/MnOx-L样品中,Fe5/MnOx-L具有最高的低温还原性、氧移动性,m(Fe2+)/m(Fe3+)及表面吸附氧最高.催化氧化CO反应中,Fe5/MnOx-L具有最佳的催化活性(t50=80℃和t90=150℃),这与Fe和MnOx-L载体之间的相互作用有关.
Keyword :
催化氧化CO 催化氧化CO 负载量 负载量 还原性 还原性 层状锰氧化物 层状锰氧化物 活性 活性 Fex/MnOx-L Fex/MnOx-L
Cite:
Copy from the list or Export to your reference management。
GB/T 7714 | 傅之丹 , 付娇丽 , 叶青 et al. MnOx-L负载Fe催化剂的制备及其催化氧化CO性能 [J]. | 北京工业大学学报 , 2020 , 46 (4) : 360-368 . |
MLA | 傅之丹 et al. "MnOx-L负载Fe催化剂的制备及其催化氧化CO性能" . | 北京工业大学学报 46 . 4 (2020) : 360-368 . |
APA | 傅之丹 , 付娇丽 , 叶青 , 程水源 , 康天放 . MnOx-L负载Fe催化剂的制备及其催化氧化CO性能 . | 北京工业大学学报 , 2020 , 46 (4) , 360-368 . |
Export to | NoteExpress RIS BibTex |
Export
Results: |
Selected to |
Format: |