Oxygen Vacancy-Mediated Photocatalysis of BiOCl
Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University
Abstract: Semiconductor photocatalysis is a trustworthy approach to harvest clean solar light for energy conversions, while state-of-the-art catalytic efficiencies are unsatisfactory because of the finite light response and/or robust charge carriers’ recombination. Along with the development of modern material characterization techniques and electronic-structure computations, oxygen vacancies (OVs) on real photocatalysts surface, even in infinitesimal concentration, are found to play a more decisive role in determining the kinetics, energetics and mechanisms of photocatalytic reactions. This report endeavors to clarify the inherent functionality of OVs in photocatalysis at the surface molecular level using 2D BiOCl as the platform. Structure sensitivity of OVs on reactivity and selectivity of photocatalytic reactions is intensely discussed via confining OVs onto prototypical BiOCl surfaces of different structures. The critical understanding of OVs chemistry in this report can help to consolidate and advance the fundamental theories of photocatalysis, and also offer new perspectives and guidelines for the rational design of catalysts with satisfactory performance.
Biography: Lizhi Zhang received his Ph. D. degree in environmental science from Chinese University of Hong Kong, China in 2003. After his postdoctoral research in department of Chemistry, Chinese University of Hong Kong, he joined in college of chemistry, Central China Normal University located at Wuhan and became a full professor of chemistry since 2005. He worked at Max-Planck Institute of Colloid and Interface as an Alexander von Humboldt Scholar from 2006 to 2007. His current research mainly aims to develop green environmental pollution control methods based on photocatalysis, Fenton reaction, and molecular oxygen activation induced by low valent iron species. He has published 230 peer-reviewed articles, including Nature Commun., JACS, Angew. Chem., Adv. Mater., ES&T, Acc. Chem. Res. and so on, with more than 16530 citations and h-index of 70. In 2014, he won National Natural Science Funds for Distinguished Young Scholars of China, and was selected as one of the most cited Chinese authors in the field of Chemistry by Elsevier’s Scopus database from 2014-2016. In 2015, he was selected as Changjiang Distinguished Professor of MOE, China.