globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.06.013
论文题名:
Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis
作者: Li H.; Chen S.; Shang H.; Wang X.; Yang Z.; Ai Z.; Zhang L.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:22
起始页码: 1916
结束页码: 1923
语种: 英语
中文关键词: Hydrogen bond ; NO oxidation ; Oxygen vacancy ; Photocatalysis ; Selectivity
英文关键词: Catalytic oxidation ; Chlorine compounds ; Hydrogen bonds ; Oxidation ; Oxygen vacancies ; Precision engineering ; Atomic precision ; Catalytic system ; Formation energies ; Nature of surface ; Oxygen chemistry ; Randomly distributed ; Spatial confinement ; Surface hydrogen ; Bismuth compounds
英文摘要: Rational engineering of oxygen vacancy (VO) at atomic precision is the key to comprehensively understanding the oxygen chemistry of oxide materials for catalytic oxidations. Here, we demonstrate that VO can be spatially confined on the surface through a sophisticated surface hydrogen bond (HB) network. The HB network is constructed between a hydroxyl-rich BiOCl surface and polyprotic phosphoric acid, which remarkably decreases the formation energy of surface VO by selectively weakening the metal–oxygen bonds in a short range. Thus, surface-confined VO enables us to unambiguously distinguish the intrafacial and suprafacial oxygen species associated with NO oxidation in two classical catalytic systems. Unlike randomly distributed bulk VO that benefits the thermocatalytic NO oxidation and lattice O diffusion by the dominant intrafacial mechanism, surface VO is demonstrated to favor the photocatalytic NO oxidation through a suprafacial scheme by energetically activating surface O2, which should be attributed to the spatial confinement nature of surface VO. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169951
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作者单位: Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, China

Recommended Citation:
Li H.,Chen S.,Shang H.,et al. Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis[J]. Science Bulletin,2020-01-01,65(22)
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