We have grown Cu₂O films by different routes including self-oxidation and metal-organic deposition (MOD). The reduction efficiency of Cu₂O films on graphene oxide (GO) synthesized by modified Hummer’s method has been studied. Surface morphology and chemical state of as-prepared Cu₂O film and GO sheets reduced at different conditions have also been investigated using atomic force microscopy (AFM) and x-ray photoelectron spectroscopy (XPS). Results show that self-oxidation Cu₂O film is more effective on phtocatalytic reduction of GO than MOD-Cu₂O film. Moreover, reduction effect of self-oxidation Cu₂O film to GO is comparable to that of environmental-friendly reducing agent of vitamin C. The present results offer a potentially eco-friendly and low-cost approach for the manufacture of reduced graphene oxide (RGO) by photocatalytic reduction.

中文翻译：

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紫外可见光下氧化亚铜膜光催化还原氧化石墨烯

我们已经通过不同的途径（包括自氧化和金属有机沉积（MOD））来生长Cu ₂ O膜。研究了改进的悍马方法在氧化石墨烯（GO）上Cu ₂ O薄膜的还原效率。还使用原子力显微镜（AFM）和X射线光电子能谱（XPS）研究了在不同条件下还原的Cu ₂ O薄膜和GO片的表面形态和化学状态。结果表明，自氧化Cu ₂ O膜对光催化还原GO的作用比MOD-Cu ₂ O膜更有效。另外，自氧化Cu _2的还原效果用于GO的O膜可与维生素C的环境友好还原剂相媲美。本研究结果为通过光催化还原生产氧化石墨烯（RGO）提供了一种潜在的生态友好且低成本的方法。