g-C_(3)N_(4)/Cu-TiO_(2)纳米球的制备及在紫外辅助芬顿中的催化性能表征  

Preparation of g-C_(3)N_(4)/Cu-TiO_(2)nanospheres andcharacterization of catalytic properties in UV-assisted fenton

作　　者：孟汝浩 班新星 左宏森[1] 李跃 栗正新[1] 邵俊永 孙冠男 郝素叶 韩少星 张霖 张国威 周少杰 MENG Ruhao;BAN Xinxing;ZUO Hongsen;LI Yue;LI Zhengxin;SHAO Junyong;SUN Guannan;HAO Suye;HAN Shaoxing;ZHANG Lin;ZHANG Guowei;ZHOU Shaojie(School of Materials Science and Engineering,Henan University of Technology,Zhengzhou 450000,China;Zhengzhou Abrasives and Tools Grinding Research Institute Co.,Ltd.,Zhengzhou 450000,China;Whitedove Abrasives CO.,Ltd.,Zhengzhou 450001,China)

机构地区：[1]河南工业大学材料科学与工程学院,郑州450001 [2]郑州磨料磨具磨削研究所有限公司,郑州450001 [3]白鸽磨料磨具有限公司,郑州450001

出　　处：《功能材料》2022年第11期11212-11219,共8页Journal of Functional Materials

基　　金：中国博士后科学基金(2022M712923);郑州市重大科技专项项目(2021KJZX0062);河南省创新引领性产业集群专项(201200210800)。

摘　　要：以一步法制备的7%(质量分数)Cu-TiO_(2)为基,利用水热法制备了不同质量分数的光催化性能优良的g-C_(3)N_(4)/Cu-TiO_(2)纳米球三元复合材料。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UVVis DRS)等分析测试手段对样品的结构、形貌和光学性能进行表征。通过罗丹明B为模拟污染物,表征其在紫外光条件下的光催化性能,结果表明,所合成的催化剂为80~90 nm的光滑纳米球体,均匀分布在层片状的g-C_(3)N_(4)上,其中60%(质量分数)g-C_(3)N_(4)/Cu-TiO_(2)在紫外芬顿体系(0.1 mL 30%H_(2)O_(2))内,在20 min内25 mg·L^(-1)罗丹明B降解率达到92.71%,在30 min达到100%。同时在pH范围2~8内具有同样高效的催化效果,显著提高了催化效率和适用pH范围。g-C_(3)N_(4)/Cu-TiO_(2) nanospheres with excellent photocatalytic performance were prepared by hydrothermal method based on 7%wt Cu-TiO_(2) prepared by one-step method.The structure,morphology and optics of the samples were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM)and UV-visible diffuse reflectance spectroscopy(UVVis DRS).Rhoda mine B was used as a simulated pollutant to characterize its photocatalytic performance under UV light.The results showed that the synthesized catalysts were 80-90 nm smooth nanospheres uniformly distributed on the lamellar g-C_(3)N_(4),and the degradation rate of 25 mg/L Rhoda mine B reached 92.71%within 20 min in the UV Fenton system(0.1 mL 30%H_(2)O_(2)) with 60%wt g-C_(3)N_(4)/Cu-TiO_(2).It reached 100%in 30 min.At the same time,it has the same efficient catalytic effect in the pH range of 2~8,which significantly improves the catalytic efficiency and the applicable pH range.

关 键 词：Cu-TiO_(2) g-C_(3)N_(4) 纳米球 紫外芬顿 

分 类 号：TQ340.64[化学工程—化纤工业]