Cu2O; Graphene; Hetero-structure; Interface; Photocatalysis; Graphene oxides; Graphenes; Interface couplings; Photo-catalytic; Photocatalytic activities; Photoelectrochemicals; Reduced graphene oxides; Semiconductor photocatalyst; Substrate material; Electronic, Optical and Magnetic Materials; Atomic and Molecular Physics, and Optics; Spectroscopy; Physical and Theoretical Chemistry; Organic Chemistry; Inorganic Chemistry; Electrical and Electronic Engineering
Abstract :
[en] Graphene oxide (GO) has been recognized as an ideal substrate material of semiconductor photocatalysts to achieve superior properties. Herein, Cu2O/reduced graphene oxide hetero-structures (Cu2O/rGO), featured by octahedron Cu2O with highly exposed {111} facets in-situ anchored on the framework of rGO nanosheets, were constructed via a green wet chemistry route at room temperature. During the reactions, Cu2+ ions that were adsorbed on GO could act as the nucleation sites of Cu2O while GO was further converted into rGO under the reduction of glucose, forming a robust hetero-interface of C–O–Cu bonding. Owning to the improved photon capture ability and carrier separation efficiency, the optimized Cu2O/rGO exhibits about 3.5 and 9.3 times enhancement of photocurrent intensity and photocatalytic activity, respectively, as compared to those of pure Cu2O. Meanwhile, the correlation among rGO content, structure and photocatalytic activity of Cu2O/rGO was demonstrated. This work presents a rational route and deep insight for the interface coupling within metal oxide/carbon material hetero-structures for advanced catalytic applications.
Disciplines :
Chemistry
Author, co-author :
Zhou, Shuang; Key Laboratory of Display Materials & Photoelectric Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
Wang, Shuai; Key Laboratory of Display Materials & Photoelectric Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
Li, He ; Department of Chemistry, Hengshui University, Hengshui, China
Yan, Xiuzhen; Key Laboratory of Display Materials & Photoelectric Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
Sheng, Jiansong; Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou, China
Yang, Hui; Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou, China
Bittencourt, Carla ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface
Snyders, Rony ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface
Li, Wenjiang; Key Laboratory of Display Materials & Photoelectric Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, China
Language :
English
Title :
Interface coupling of octahedron Cu2O with reduced graphene oxide for enhanced photocatalytic and photoelectrochemical activity
Research Institute for Materials Science and Engineering
Funding text :
This work was supported by the National Natural Science Foundation of China, China (No. 21911530255), funded by Science and Technology Project of Hebei Education Department, China (No. ZD2022152), Scientific Research Project of Hengshui University, China (No. 2023XJZX12) and the Belgian Fund for Scientific Research under the FRFC contract CDR J001019, Belgium.This work was supported by the National Natural Science Foundation of China (Nos. U1764254 and 21911530255), Science and Technology Project of Hebei Education Department, China (No. ZD2022152), Scientific Research Project of Hengshui University, China (No. 2023XJZX12) and the Belgian Fund for Scientific Research under the FRFC contract CDR J001019.
