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Feng X, Long R, Wang L, Liu C, Bai Z, Liu X. A review on heavy metal ions adsorption from water by layered double hydroxide and its composites. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120099] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Cheng W, Guan W, Lin Y, Lu C. Rapid Discrimination of Adsorbed Oxygen and Lattice Oxygen in Catalysts by the Cataluminescence Method. Anal Chem 2022; 94:1382-1389. [DOI: 10.1021/acs.analchem.1c04663] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weiwei Cheng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yanjun Lin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Zou R, Xie R, Wang L, Lin Y, Lu C. Electrochemiluminescence detection of oxygen vacancies in layered double hydroxides. Chem Commun (Camb) 2021; 58:423-426. [PMID: 34897325 DOI: 10.1039/d1cc05990d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel electrochemiluminescence (ECL) platform was established to screen oxygen vacancies in layered double hydroxides (LDHs) by fabricating graphitic carbon nitride/LDH nanocomposites. The oxygen vacancy concentrations determined by the developed ECL platform were in good agreement with those obtained by XPS.
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Affiliation(s)
- Rui Zou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Ruyu Xie
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Liren Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yanjun Lin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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Huang Y, Zou R, Lin Y, Lu C. Electronic Metal-Support Interactions for Electrochemiluminescence Signal Amplification. Anal Chem 2021; 93:11291-11297. [PMID: 34346688 DOI: 10.1021/acs.analchem.1c02423] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Au nanoparticle-amplified electrochemiluminescence (ECL) signals are generally realized by nanoparticle morphology modification, functionalization, and nanoalloys formation. It remains a great challenge to utilize the intrinsic catalytic activity of spherical Au nanoparticles for ECL performance improvement. In this work, we prepared the oxygen vacancy-rich CoAl-layered double hydroxide (LDH-Ov)-supported spherical Au nanoparticles via alkali etching of LDH and electrodeposition of Au nanoparticles on the surface of LDH. It was found that the luminol ECL signals of the as-prepared system were significantly enhanced by forming the strong electronic metal-support interaction (EMSI) between Au nanoparticles and LDH-Ov. The further mechanism study demonstrated that EMSI can increase the electron density of interfacial Au atom (Auδ-) due to a redistribution of charge and promote electron transfer between Au species and LDH-Ov. This study not only introduces EMSI to the ECL field but also paves a new way to the applications of the intrinsic activity of spherical Au nanoparticles in ECL signal amplification. We anticipate that EMSI would be applied to other metal nanocatalysts for the development of highly efficient ECL systems.
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Affiliation(s)
- Yuhui Huang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Rui Zou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yanjun Lin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Yang J, Li C, Liang D, Liu Y, Li Z, Wang H, Huang H, Xia C, Zhao H, Liu Y, Zhang Q, Meng Z. Central-collapsed structure of CoFeAl layered double hydroxides and its photocatalytic performance. J Colloid Interface Sci 2021; 590:571-579. [PMID: 33581660 DOI: 10.1016/j.jcis.2021.01.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/19/2021] [Accepted: 01/23/2021] [Indexed: 10/22/2022]
Abstract
Layered double hydroxides (LDHs) has been regarded as one of the most potential photocatalysts for degradation of the pollutants, due to the tunable elements in the laminates, high surface area and exposed active sites. Developing a photocatalyst with a visible light activity and fast charge separation efficiency is a main research focus. In this work, a central-collapsed CoFeAl-LDHs was formed via the selective etching Al3+ in the laminates, which relied on the function of OH- produced by urea hydrolysis. The Central-collapsed structure of CoFeAl-LDHs exhibited enhanced adsorption activity and photocatalytic efficiency. The results show that the pseudo-second-order kinetic model and the Langmuir model are suitable for adsorption behavior. This etching cavity is beneficial to the adsorption of MB and provides a better platform for the direct interaction between MB and CoFeAl-LDHs. The morphology and photoelectrochemical properties of the central-collapsed structure of LDHs were characterized and used to explore the relationship between the etching degree and photocatalytic activity. The photocatalytic properties of all the samples under visible light irradiation were evaluated, and LDH-6 has the best photocatalytic activity. This work provides a novel approach for the fabrication of central-collapsed structure of layered double hydroxides photocatalysts to meet environmental and energy requirements.
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Affiliation(s)
- Junshan Yang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 255049 Zibo, PR China
| | - Chao Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 255049 Zibo, PR China
| | - Derui Liang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 255049 Zibo, PR China
| | - Yao Liu
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Zhaosong Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Haiyan Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Hanhan Huang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 255049 Zibo, PR China
| | - Caifeng Xia
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 255049 Zibo, PR China
| | - Hui Zhao
- School of Resources and Environmental Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Yunyan Liu
- School of Physics and Optoelectronic Engineering, Shandong University of Technology, 255049 Zibo, PR China
| | - Qian Zhang
- School of Resources and Environmental Engineering, Shandong University of Technology, 255049 Zibo, PR China.
| | - Zilin Meng
- School of Resources and Environmental Engineering, Shandong University of Technology, 255049 Zibo, PR China.
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