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Semiconductor-based photocatalyst materials played an important role in the degradation of organic compounds in recent years. Photocatalysis is a simple, cost-effective, and environmentally friendly process for degrading organic compounds. In this work, vanadium pentoxide (VO) and VO/RGO (reduced graphene oxide) composite were synthesized by a hydrothermal method. The prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Raman spectroscopy, and UV-Vis spectroscopic analysis, etc. Raman analysis shows the occurrence of RGO characteristic peaks in the composite and different vibrational modes of VO. The band gap of flake-shaped VO is reduced and its light absorption capacity is enhanced by making its composite with RGO. The photocatalytic degradation of methylene blue (MB) was studied using both VO and VO/RGO composite photocatalyst materials. The VO/RGO composite exhibits a superior photocatalytic performance to VO. Both catalyst and light play an important role in the degradation process.
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http://dx.doi.org/10.3390/nano13020338 | DOI Listing |
Gels
August 2025
School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of Korea.
The continuous increase in global energy demand necessitates the development of sustainable, clean, and highly efficient methods of energy generation. Electrochemical water splitting, comprising hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), represents a promising strategy but remains hindered by sluggish reaction kinetics and limited availability of highly active electrocatalysts especially under alkaline conditions. Addressing this challenge, we successfully synthesized a rGO-VO/WO (rG-VO/WO) hydrogel electrocatalyst through a facile hydrothermal approach.
View Article and Find Full Text PDFBeilstein J Nanotechnol
June 2025
School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, South Korea.
Reduced graphene oxide (rGO)-assisted microwave (MW) synthesis of metal-oxide-based binary and ternary nanocomposites has recently gained considerable research attention. In this context, the current work demonstrates a facile rGO-supported solid-state MW synthetic route for fabricating a ternary nanocomposite of VO, FeO, and rGO. Here, the MW irradiation for 90 s was found to be suitable for the reduction and exfoliation of graphite oxide to form rGO, the reduction of VO to form VO and the formation of FeO from ferrocene.
View Article and Find Full Text PDFJ Colloid Interface Sci
April 2025
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China. Electronic address:
Thermal batteries are a type of thermally activated reserve batteries, where the cathode material significantly influences the operating voltage and specific capacity of the battery. In this work, VS-VO has been synthesized through the hydrothermal method and used as the cathode material for thermal batteries. Firstly, the material with the VS crystallinity is obtained at 170 °C and the mass percentages of VS/VO are 63.
View Article and Find Full Text PDFACS Appl Mater Interfaces
July 2024
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Real-time detection of harmful gases at room temperature has become a serious problem in public health and environmental monitoring. Two-dimensional materials with semiconductor properties BiOCl is a promising gas-sensitive material due to its large specific surface area and adjustable band gap as well as outstanding safety characteristics. However, limited by the weak gas adsorption sites and sluggish charge-transfer ability, the performance of BiOCl could not be fully exploited.
View Article and Find Full Text PDFSci Rep
August 2023
Department of Chemistry, Chemistry and Petrochemistry Research Center, Institute of Standard and Industrial Research of Iran (ISIRI), Karaj, 3174734563, Iran.
In order to improve the desulfurization efficiency of petroleum derivatives, CeBiVO/rGO nanocomposite was synthesized by sonochemical method. The prepared nanocomposites were characterized by XRD, FESEM, EDS, FT-IR, BET, and DRS analyses. XRD analysis shows that the synthesized nanocomposite is amorphous.
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