Abstract Due to environmental pollution caused by organic pollutants, there is an urgent need to develop renewable and environmentally friendly energy sources. In this study, N-doped graphene-based CuO/WO3/Cu photocatalyst (CuO/WO3/Cu@CN) was prepared for degrading organic pollutants by using Cu(salen)PW12 complex as the precursor and GO as the substrate. The CuO/WO3/Cu@CN photocatalyst not only solved the problem that CuO/WO3 heterojunction easily expands into powder and causes poor recyclability, but also effectively promoted the separation of photoinduced e- and h+ and inhibited their recombination. The catalyst can effectively catalyze the decomposition of 4-nitrophenol, and the cycle test confirmed that it has good cycle stability. Under UV–Vis light irradiation, CuO/WO3/Cu@CN can effectively degrade four kinds of organic dyes and the mechanism of photocatalytic degradation of organic dyes was deduced. It is worth noting that N-doped graphene regulates the band-gap of the material, leading CuO/WO3/Cu@CN to generate hydrogen in the photocatalytic process. This study is expected to provide a promising way for effective degradation of organic pollutants.

中文翻译：

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具有催化分解4-硝基苯酚和光催化降解有机染料性能的N掺杂石墨烯基CuO/WO3/Cu复合材料

摘要 由于有机污染物造成的环境污染，迫切需要开发可再生、环境友好的能源。本研究以Cu(salen)PW12配合物为前驱体，GO为底物，制备了N掺杂石墨烯基CuO/WO3/Cu光催化剂（CuO/WO3/Cu@CN），用于降解有机污染物。CuO/WO3/Cu@CN光催化剂不仅解决了CuO/WO3异质结易膨胀成粉末导致可回收性差的问题，而且有效促进了光致e-和h+的分离并抑制了它们的复合。该催化剂能有效催化4-硝基苯酚的分解，循环试验证实具有良好的循环稳定性。在紫外-可见光照射下，CuO/WO3/Cu@CN可有效降解4种有机染料，并推导出光催化降解有机染料的机理。值得注意的是，N掺杂石墨烯调节材料的带隙，导致CuO/WO3/Cu@CN在光催化过程中产生氢气。该研究有望为有机污染物的有效降解提供一种有前景的方法。