Abstract Herein, we report the development of a novel recyclable sonochemical non-covalent grafting of Cu(acac)2 over two-dimensional graphene oxide (GO) photocatalyst degrades phenol under visible light irradiation. The photocatalyst was prepared and characterized by XRD, FTIR, SEM, HR-TEM, EDAX, XPS, BET. The results of the analysis suggest the uniform grafting of Cu(acac)2 over the surface of GO. The photodegradation efficiency of GO/Cu(acac)2 was performed both under light and dark. The composite showed up to 90% degradation of phenol in 90 min when irradiated under the visible light. This improved photocatalytic activity may be attributed to the reduction in the band gap of pristine GO owing to the grafting of Cu(acac)2. The Langmuir-Hishelwood pseudo-first-order kinetic model of the degradation was performed and the rate constant (k) in presence of light for the composite was found to be 9.94 x 10-4 min-1 which is almost three times than the rate constant measured in presence of light with pristine GO.

中文翻译：

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在二维氧化石墨烯纳米片上制备非共价接枝的 Cu(acac)2：一种用于可见光驱动苯酚降解的环境友好型贵重光催化剂

摘要在此，我们报告了一种新型可回收的声化学非共价接枝 Cu(acac)2 在二维氧化石墨烯 (GO) 光催化剂上的发展，可在可见光照射下降解苯酚。通过XRD、FTIR、SEM、HR-TEM、EDAX、XPS、BET对光催化剂进行制备和表征。分析结果表明，在 GO 表面上均匀接枝了 Cu(acac)2。GO/Cu(acac)2 的光降解效率在光照和黑暗下进行。在可见光照射下，该复合材料在 90 分钟内降解了高达 90% 的苯酚。这种改进的光催化活性可能归因于 Cu(acac)2 接枝导致原始 GO 带隙的减小。