Visible Light Photocatalytic Degradation of Methylene Blue and Malachite Green Dyes with CuWO<sub>4</sub>-GO Nano Composite

• 作者: Hima Bindu Gandham Mastan Rao Kotupalli Paul Douglas Sanasi Rama Krishna Reddy Chinnam Sowmyasree Markapurapu Sunitha Medidi Venkata Mahalakshmi Susarla
• 来源期刊: 催化剂现代研究(英文)
• 学科: 化学
• 关键词: Copper TUNGSTATE Graphene Oxide METATHESIS Methylene Blue MALACHITE Green Visible Light PHOTODEGRADATION
• 年，卷（期）: 2018,（2）
• 页码范围: 17-34
• 页数: 18页
• 分类号: O6

摘要

Copper Tungstate-Graphene Oxide nano composites have been successfully applied as excellent catalysts for the photocatalytic degradation with Methylene blue and Malachite green dyes under visible light irradiation. A facile?solid state metathesis synthesis of copper tungstate (CuWO4) followed by ball milling and subsequent preparation of copper tungstate-graphene oxide?(CuWO4-GO) nano composite using a colloidal blending process and its application as a visible light photocatalyst for the degradation of Malachite green and Methylene blue dyes. The morphology and composition of copper tungstate (CuWO4) nano composite have been characterized using X-Ray Diffraction (XRD), UV-Visible Diffuse Reflectance Spectra (UV-DRS), Raman Spectra, Field Emission Scanning Electron Microscopy (FESEM)-EDS and UV Visible Spectroscopy. It shows a band gap value of 2.13 eV, an increase in range and intensity of light absorption and the reduction of electron-hole pair recombination in CuWO4 with the introducing of GO on to it.