Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 299, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2021.122195
Keywords
Electrospinning; BiVO4; MoS2; Heterojunctions; Photocatalysis
Funding
- Science and Technology Department of Shaanxi Province [2021JM-386]
- Provincial Joint Fund of Shaanxi [2021JLM-28]
- Outstanding Youth Science Fund of Xi'an University of Science and Technology [2019YQ2-06]
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A novel fibrous BiVO4/Bi2S3/MoS2 heterojunction was fabricated using electrospinning and hydrothermal processes. The heterojunction exhibited enhanced visible light absorption and photocurrent, showing potential for applications in energy storage and conversion with high photocatalytic activity.
A novel fibrous BiVO4/Bi2S3/MoS2 heterojunction is facilely constructed by simple electrospinning and hydrothermal processes. Bi2S3 was formed concurrently along with the hydrothermal synthesis of MoS2 on to the porous structure of BiVO4 fibers. The BiVO4/Bi2S3/MoS2 (BBM) heterojunction is organized with MoS2 nanosheets of several layers in thickness encapsulating both on the Bi2S3 nanorod around 40 nm in diameter and fibrous BiVO4 template. The BiVO4/Bi2S3/MoS2 heterojunction shows significant enhancement of visible light absorption in the region of 500-800 nm and photocurrent of 3 times higher than that of pure BiVO4. By adjusting the precursor concentration of MoS2, the optimized BBM-2 sample presents 4.9 and 9.5 times higher of the photodegradation efficiency and apparent reaction rate constant respectively, than that of pure BiVO4 fibers after 120 min under visible light irradiation. The present work will provide a new strategy to the design of Bi-contained nanofibrous heterojunctions with high photocatalytic activity for the applications in energy storage and conversion.
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