title: One step in situ synthesis of core-shell structured Cr2O3:P@fibrous-phosphorus hybrid composites with highly efficient full-spectrum-response photocatalytic activities.
abstract: Making full use of solar energy and achieving high charge separation efficiency are critical factors for the photocatalysis technique. In this work, we report core-shell structured fibrous phosphorus (f-P) coated P-doped Cr2O3(Cr2O3:P@f-P) hybrid composites with a strong optical absorption in the full region of 200-2600 nm. The Cr2O3:P@f-P hybrid composites exhibit a record photocatalytic efficiency under UV, visible and near-infrared light irradiation, demonstrating as promising photocatalysts for the full utilization of solar energy. Systematical investigations combining experimental and theoretical work show that P doping modifies the electronic band structures and creates defective levels in the forbidden gap of Cr2O3which extends the optical absorption to the visible and near-infrared regions. Highly crystalline fibrous phosphorus in situ grown on the Cr2O3particles constructs a core-shell hybrid structure which guarantees intimate interfacial contact between f-P and Cr2O3:P and facilitates the separation of photogenerated electron-hole pairs. This study develops a promising system based on earth abundant element P to utilize the overall spectrum of sunlight for photochemical applications.
authors.affiliation: School of Physics, Chongqing University, Chongqing, 401331, China. sjchen@cqu.edu.cn.
authors.forename: Hongpeng
authors.initials: H
authors.lastname: Zhou
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China. junkai.deng@mail.xjtu.edu.cn.
authors.forename: Shixin
authors.initials: S
authors.lastname: Xu
authors.affiliation: College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331, China.
authors.forename: Dingke
authors.initials: D
authors.lastname: Zhang
authors.affiliation: School of Physics, Chongqing University, Chongqing, 401331, China. sjchen@cqu.edu.cn.
authors.forename: Shijian
authors.identifier: http://orcid.org/0000-0002-9523-6686
authors.initials: S
authors.lastname: Chen
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China. junkai.deng@mail.xjtu.edu.cn.
authors.forename: Junkai
authors.initials: J
authors.lastname: Deng