期刊论文

Ai, Zhihui;Zhang, Lizhi

英文

科学通报(英文版)

2095-9273

2020

65

22

1916-1923

10.1016/j.scib.2020.06.013

National Key Research and Development Program of China [2016YFA0203000]; National Natural Science Funds for Distinguished Young ScholarsNational Natural Science Foundation of China (NSFC)National Science Fund for Distinguished Young Scholars [21425728]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21872061]; 111 ProjectMinistry of Education, China - 111 Project [B17019]; Self-Determined Research Funds of CCNU from the Colleges' Basic Research and Operation of MOE [CCNU16A02029]

本校为第一且通讯机构

Rational engineering of oxygen vacancy (V-O) at atomic precision is the key to comprehensively understanding the oxygen chemistry of oxide materials for catalytic oxidations. Here, we demonstrate that V-O 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 V-O by selectively weakening the metal-oxygen bonds in a short range. Thus, surface-confined V-O enables us to unambiguously distinguis...

从原子尺度上设计合成氧空位是深入了解氧化物催化氧化技术的关键.在这项研究中,氧空位可以通过构建表面氢键网络从而被限域在催化剂的表面.这种有趣的氢键网络是由富含羟基的Bi OCl和磷酸分子所构建.氢键网络的存在可以选择性削弱表面金属-氧键结合能,从而大大降低表面氧空位的形成能.这种限域在表面的氧空位可以用来详细地区分两种经典催化体系中与一氧化氮（NO）氧化有关的体相氧和表面氧的贡献.理论计算与实验表明,体相氧空位可以通过加快晶格O扩散从而促进热催化NO氧化,而表面氧空位则在光活化表面分子氧去除NO方面更加有效.这项研究表明合理地设计缺陷是实现理想化学反应的关键,同时为高性...