Xing-Peng Wei, Yu-Ting Yang, Zi-Yi Zheng, Wang-Bo Yuan, Hong-Gang Ni
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引用次数: 0
Abstract
A minimalist approach to fabricate the synthetic composite Ti/TiO2/BiVO4 was proposed. Concurrently, the photoelectrocatalytic performance and activity of the Ti/TiO2/BiVO4 electrode were evaluated. Specifically, the relationship between composition, morphology, and photocurrent response was initially discussed. Then, the transient photocurrent, linear sweep voltammetry, photoconversion efficiency, and electrochemical impedance spectroscopy were employed to test the photoelectrochemical performance. To evaluate the photoelectrocatalytic activity of this composite electrode, rhodamine B (RhB) degradation under optimized experimental conditions was selected as a typical case study. Compared with other similar electrodes, the present electrode had a short preparation time, excellent photocurrent response, high RhB removal, and high stability. Based on the measurements of trapping experiments, Mott−Schottky spectroscopy (M−S), UV–visible diffuse reflectance spectra (UV–Vis DRS), electron paramagnetic resonance (EPR), and degradation intermediate products, a possible photoelectrocatalytic degradation mechanism of Ti/TiO2/BiVO4 was proposed. According to our results, ·O2− should be the dominant oxidative species. The Z-scheme heterojunction of Ti/TiO2/BiVO4 has a new microstructure with potential in wastewater treatment.
期刊介绍:
Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.