Abstract
TiO2/SnS/MoS2 ternary nanorod arrays were synthesized on a fluorine-doped tin oxide (FTO) conductive glass by a successive hydrothermal method. The morphology, microstructure, optical properties, photodegradation activity, photoelectrochemical performance, and charge transport mechanism of TiO2/SnS/MoS2 were systematically studied. It was found that SnS and MoS2 with a narrow bandgap can facilitate light absorbance of TiO2/SnS/MoS2 heterostructures across the visible range, improving the utilization of sunlight. TiO2/SnS/MoS2 exhibits the maximum photodegradation rate (61.54%) for Rhodamine B (RhB) in 60 min with a pseudo-first-order rate constant (0.0122 min−1), which is about 5.16 times better than that of TiO2. As a photoanode, TiO2/SnS/MoS2 has the highest photocurrent (0.841 mA cm−2), which is approximately 8.32 times better than those of TiO2. The enhanced photocatalytic and photoelectrochemical performance of TiO2/SnS/MoS2 is ascribed to the Z-scheme mechanism determined by the detection of active species and the synergistic effect of SnS and MoS2 co-decoration.
Funder
National Natural Science Foundation of China
Provincial Foundation for Excellent Young Talents of Colleges, Universities of Anhui Province
Natural Science Foundation of Anhui Province
Graduate Innovation Fund of Anhui University of Science and Technology
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials