氧化亚铜/还原氧化石墨烯复合材料的制备及其光催化性能研究  

Preparation and photocatalytic performance of Cu_(2)O/rGO composite

作　　者：王丽敏 刘海涛 冯欣冉 胡月 张歆皓 邹丽飞 Wang Limin;Liu Haitao;Feng Xinran;Hu Yue;Zhang Xinhao;Zou Lifei(College of Chemistry and Life Sciences,Chifeng University,Chifeng 024000;Inner Mongolia Key Laboratory of Photoelectric Functional Materials,Chifeng 024000;Chemical Inspection Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010)

机构地区：[1]赤峰学院化学与生命科学学院,赤峰024000 [2]内蒙古自治区光电功能重点实验室,赤峰024000 [3]内蒙古包钢钢联股份有限公司化检验中心,包头014010

出　　处：《化工新型材料》2024年第12期183-189,共7页New Chemical Materials

基　　金：国家自然科学基金(22361001);内蒙古自治区高等学校科学技术研究项目(NJZY21133、NJZY23039);自治区级大学生创新创业训练计划项目(S202310138022)。

摘　　要：通过低温液相沉淀法制备了纳米Cu_(2)O和Cu_(2)O/x%rGO(rGO为还原氧化石墨烯,x=0.4%,0.7%,1%)可见光响应型催化剂,对样品进行了X射线衍射(XRD)、扫描电子显微镜(SEM)、紫外-可见漫反射(UV-Vis)、光致发光光谱(PL)、红外吸收光谱(FT-IR)、电化学阻抗谱(EIS)、瞬态光电流等表征,并测试了它们在可见光照射下催化降解抗生素的性能。结果表明:与单组分Cu_(2)O光催化剂相比,负载rGO后光催化效率明显提升,其中Cu_(2)O/1%rGO催化效果最佳,反应90min时盐酸四环素(TC)去除率可达到71.6%,且循环使用4次性能无明显下降。在降解TC过程中,空穴(h^(+))和羟基自由基(·OH)起主要作用。此外,Cu_(2)O/1%rGO光催化去除土霉素也表现出良好的效果。The visible light-responsive nano-Cu_(2)O and Cu_(2)O/x%rGO(x=0.4%,0.7%,1%)photocatalysts were prepared by low-temperature liquid-phase precipitation method.The samples were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),ultraviolet-visible diffuse reflection(UV-Vis),photoluminescence spectroscopy(PL),infrared absorption spectroscopy(FT-IR),electrochemical impedance spectroscopy(EIS)and transient photocurrent tests,and their catalytic performance for the degradation of antibiotics under visible light irradiation was tested.The results showed that compared with pure Cu_(2)O photocatalyst,the photocatalytic efficiency was significantly improved after loading rGO.Among them,Cu_(2)O/1%rGO exhibited the best catalytic effect,with a removal rate for tetracycline hydrochloride(TC)of 71.6%after 90 min reaction,and there was no significant decrease in performance after four cycles of degradation experiments.In the process of TC degradation,hole(h^(+))and hydroxyl radical(·OH)groups played the main roles.Besides,Cu_(2)O/1%rGO also exhibited a good performance in the photocatalytic removal of oxytetracycline.

关 键 词：氧化亚铜 石墨烯 纳米复合材料 光催化 抗生素 

分 类 号：O643.32[理学—物理化学]