Synthesis and enhanced photocatalytic performance of graphene-Bi2WO6 composite

文献情報

出版日 2010-12-16

DOI 10.1039/C0CP01749C

インパクトファクター 3.676

著者

Erping Gao, Wenzhong Wang, Meng Shang, Jiehui Xu

原文を見る

要旨

Graphene possesses excellent conductivity, adsorptivity, and controllability. The combination of photocatalysts and graphene will introduce these properties of graphene into photocatalysis. In this paper, graphene oxide-Bi2WO6 composite was firstly prepared via in situhydrothermal reaction in the presence of graphene oxide, then the graphene oxide was reduced by ethylene glycol and the graphene-Bi2WO6 (G-BWO) composite was formed. The as-prepared graphene-Bi2WO6 photocatalyst shows enhanced photocatalytic activity for the degradation of rhodamine B (RhB) under visible light (λ > 420 nm). The electronic interaction and charge equilibration between graphene and Bi2WO6 lead to the shift of the Fermi level and decrease the conduction band potential, which has an important influence on the photocatalytic process. The enhanced photocatalytic activity could be attributed to the negative shift in the Fermi level of G-BWO and the high migration efficiency of photoinduced electrons, which may suppress the charge recombination effectively.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.