Br doped porous bismuth oxychloride micro-sheets with rich oxygen vacancies and dominating {0 0 1} facets for enhanced nitrogen photo-fixation performances

Dapeng Wu¹, Rui Wang², Can Yang³, Yipeng An⁴, Hai Lu⁵, Hongju Wang⁶, Kun Cao², Zhiyong Gao², Wenchao Zhang⁷, Fang Xu⁸, Kai Jiang⁹

Affiliations

¹ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, PR China. Electronic address: dapengwu@htu.edu.cn.
² Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China.
³ State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, PR China.
⁴ Henan Key Lab Boron Chemistry & Advanced Energy Mat, Xinxiang 453007, Henan, PR China; Engineering Laboratory for Optoelectronic Technology and Advanced Manufacturing, College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, PR China.
⁵ Engineering Laboratory for Optoelectronic Technology and Advanced Manufacturing, College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, PR China.
⁶ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; Henan Key Lab Boron Chemistry & Advanced Energy Mat, Xinxiang 453007, Henan, PR China.
⁷ Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronics & Biomedical Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, NSW 2500, Australia.
⁸ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, PR China.
⁹ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China. Electronic address: jiangkai6898@126.com.

PMID: 31437656
DOI: 10.1016/j.jcis.2019.08.048

Br doped porous bismuth oxychloride micro-sheets with rich oxygen vacancies and dominating {0 0 1} facets for enhanced nitrogen photo-fixation performances

Dapeng Wu et al. J Colloid Interface Sci. 2019.

. 2019 Nov 15:556:111-119.

doi: 10.1016/j.jcis.2019.08.048. Epub 2019 Aug 13.

Authors

Dapeng Wu¹, Rui Wang², Can Yang³, Yipeng An⁴, Hai Lu⁵, Hongju Wang⁶, Kun Cao², Zhiyong Gao², Wenchao Zhang⁷, Fang Xu⁸, Kai Jiang⁹

Affiliations

¹ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, PR China. Electronic address: dapengwu@htu.edu.cn.
² Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China.
³ State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, PR China.
⁴ Henan Key Lab Boron Chemistry & Advanced Energy Mat, Xinxiang 453007, Henan, PR China; Engineering Laboratory for Optoelectronic Technology and Advanced Manufacturing, College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, PR China.
⁵ Engineering Laboratory for Optoelectronic Technology and Advanced Manufacturing, College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, PR China.
⁶ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; Henan Key Lab Boron Chemistry & Advanced Energy Mat, Xinxiang 453007, Henan, PR China.
⁷ Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronics & Biomedical Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, NSW 2500, Australia.
⁸ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, PR China.
⁹ Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China. Electronic address: jiangkai6898@126.com.

PMID: 31437656
DOI: 10.1016/j.jcis.2019.08.048

Abstract

Bismuth oxychloride micro-sheets with rich oxygen vacancies (BiOCl-OV) are firstly prepared through a surfactant assisted solvothermal method. Due to the selective surfactant adsorption, the as-prepared BiOCl-OV exposes high percentage {0 0 1} facets. Moreover, the ion-exchange process not only introduces Br atoms but also creates cavities in crystal structure of the Br doped BiOCl-OV (Br-BiOCl-OV). When used as photocatalyst for N₂ photo-fixation, the optimized Br-BiOCl-OV demonstrates an ammonia producing rate of 6.3 μmol h^-1 under visible light irradiation, which is greatly enhanced than that of pristine BiOCl-OV (4.1 μmol h^-1). The density functional theory (DFT) calculation suggests that because of the introduced Br atoms and the oxygen vacancies, the adsorbed N₂ on Br-BiOCl-OV exhibits greater NN bond length than that adsorbed on pristine BiOCl-OV, attributing to the effective activation of the inert NN bonds. Photocurrent response, state/transient PL spectra and electrochemical impedance spectroscopy indicate that the Br-BiOCl-OV possesses promoted charge separation and suppressed charge recombination, which finally leads to the high N₂ photo-fixation performances.

Keywords: BiOCl; Controllable synthesis; Doping; N(2) photo-fixation; Photocatalyst.

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Br doped porous bismuth oxychloride micro-sheets with rich oxygen vacancies and dominating {0 0 1} facets for enhanced nitrogen photo-fixation performances

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Br doped porous bismuth oxychloride micro-sheets with rich oxygen vacancies and dominating {0 0 1} facets for enhanced nitrogen photo-fixation performances

Authors

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Abstract

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