Nanocubic copper cobaltite for methyl orange degradation through photocatalytic process

尖晶石 甲基橙 钴酸盐 光催化 材料科学 结晶度 傅里叶变换红外光谱 化学工程 可见光谱 透射电子显微镜 核化学 分析化学(期刊) 纳米技术 冶金 化学 复合材料 有机化学 催化作用 工程类 光电子学
作者
Lalitha Gnanasekaran,Shanmugapriya Dharani,Velusamy Sasikala,S. Vadivel,Wei‐Hsin Chen,M. Arthi,Matias Soto-Moscoso
出处
期刊:Chemosphere [Elsevier BV]
卷期号:312: 137311-137311 被引量:15
标识
DOI:10.1016/j.chemosphere.2022.137311
摘要

In this study, cubic spinel structured CuCo2O4 (Copper cobaltite) nanospheres were fabricated by thermal decomposition method. The visible light degradation of organic contaminant methyl orange (MO) was focused in this study using the synthesized pure CuO, Co3O4 and CuCo2O4 with different weight ratios of raw materials (90:10, 75:25 and 50:50). It could be well realized that after the characterization techniques, the synthesized CuCo2O4 materials resembled cubic spinel structure as confirmed by X-ray diffraction (XRD) investigation. Meanwhile, all the synthesized materials through transmission electron microscopy (TEM) have showed cubic shaped particles and among the CuCo2O4 materials, CuCo2O4 (50:50) expressed not as much of crystallinity due to the agglomerated nanospheres. On the other hand, well crystalline CuCo2O4 (75:25) displayed higher surface area than the other materials when analysed through Brunauer-Emmett-Teller (BET) method. The Fourier transform infra-red (FTIR) spectrum has evinced the formation of CuCo2O4 nanostructures. In addition, the cubic spinel structured CuCo2O4 provided positive results over visible light irradiation. Finally, the CuCo2O4 (75:25) sample has scored high as much of 85% MO degradation compared with others. This sample was progressed with repetitive recycling tests and presented the best photocatalytic degradation efficiency. The upgraded results of CuCo2O4 sample have been linked with the developed synergistic effects during the formation of binary metal oxides. Also, the interfacial electron-hole formation leads to the migration and hindering of charge carriers for visible light activity.
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