气候变化领域集成服务门户(CCPortal): Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis

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DOI	10.1016/j.scib.2020.06.013
	Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis
	Li H.; Chen S.; Shang H.; Wang X.; Yang Z.; Ai Z.; Zhang L.
发表日期	2020
ISSN	20959273
起始页码	1916
结束页码	1923
卷号	65 期号:22
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207095
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
推荐引用方式 GB/T 7714	Li H.,Chen S.,Shang H.,et al. Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis[J],2020,65(22).
APA	Li H..,Chen S..,Shang H..,Wang X..,Yang Z..,...&Zhang L..(2020).Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis.Science Bulletin,65(22).
MLA	Li H.,et al."Surface hydrogen bond network spatially confined BiOCl oxygen vacancy for photocatalysis".Science Bulletin 65.22(2020).