Yadav Anuja A, Hunge Yuvaraj M, Kang Seok-Won, Fujishima Akira, Terashima Chiaki
Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea.
Research Center for Space System Innovation, Research Institute for Science and Technology (RIST), Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
Nanomaterials (Basel). 2023 Jan 13;13(2):338. doi: 10.3390/nano13020338.
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.
近年来，基于半导体的光催化剂材料在有机化合物降解方面发挥了重要作用。光催化是一种降解有机化合物的简单、经济高效且环保的过程。在本工作中，通过水热法合成了五氧化二钒（VO）和VO/RGO（还原氧化石墨烯）复合材料。采用X射线衍射（XRD）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）、拉曼光谱和紫外可见光谱分析等对制备的样品进行了表征。拉曼分析表明复合材料中出现了RGO特征峰以及VO的不同振动模式。通过将片状VO与RGO复合，其带隙减小，光吸收能力增强。使用VO和VO/RGO复合光催化剂材料研究了亚甲基蓝（MB）的光催化降解。VO/RGO复合材料表现出优于VO的光催化性能。催化剂和光在降解过程中都起着重要作用。
