材料科学
氧化钒
纳米复合材料
热液循环
水热合成
微晶
氧化镍
化学
光催化
镍
催化作用
钒
氧化物
化学工程
纳米技术
冶金
有机化学
工程类
作者
Amal George,A. Dhayal Raj,A. Albert Irudayaraj,R.L. Josephine,X. Venci,S. John Sundaram,R. Rajakrishnan,Palaniselvam Kuppusamy,K. Kaviyarasu
标识
DOI:10.1016/j.envres.2022.112970
摘要
Recently, researchers are concentrating on the synthesis of composite materials to enhance the efficiency of the materials in various applications. In this work, nickel vanadium oxide (NiV2O6) nanocomposite material is prepared via two methods and the prepared samples have been characterized with basic studies to analyse the effect of preparation method and the reaction time. The XRD studies reveal a polycrystalline growth in both the methods. The broad XRD peaks obtained for samples prepared via hydrothermal method suggests the size reduction and 1D nanostructure formation. The SEM analysis shows the formation of 1D structures in hydrothermal and 3D microsphere structures in solvothermal methods. The possible formation mechanism behind this formation has been discussed in this manuscript. The FTIR peaks in the fingerprint region confirm the formation and vibration of metal-oxygen bonds. The large optical bandgap values obtained from Tauc plot again confirms the formation of nanostructures of the synthesized samples. The photocatalytic activity of nickel vanadium oxide on methylene blue dye under halogen light were performed and, the recyclability of the sample is investigated. It was found from the photocatalytic spectrum that, the samples prepared from both the methods shows a degradation efficiency of more than 80% within 150 min. It was confirmed that the prepared NiV2O6 photocatalyst samples does not lose their degradation ability even after five cycles of repeated usage.
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