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OALib Journal期刊
ISSN: 2333-9721
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cucro2的合成及其复合催化剂的光催化性能
, PP. 1473-1480
Keywords: cucro2,半湿法,复合催化剂,光催化,分解水
Abstract:
？以硝酸铬和硝酸铜为原料，通过半湿法经两种不同路径合成了cucro2半导体物质。分别采用热重-差示扫描（tg-dsc）、x射线衍射（xrd）、紫外-可见漫反射（uv-visdr）、扫描电镜（sem）及x射线光电子能谱（xps）对样品进行了表征分析。确立了以氨水为cr3+沉淀剂制得的氢氧化铬沉淀中加入硝酸铜溶液是合成cucro2较适宜的路径。借助tg-dsc和xrd的分析结果确立前驱体在热处理的过程中，含cr物相的变化历程为cr（oh）3→cucro4→cucr2o4→cucro2。通过机械研磨的方法合成了cucro2-wo3和cucro2-zno复合型催化剂，对其进行了xrd、sem和xps表征分析，并测试了复合催化剂的光催化活性。结果表明，与单独使用cucro2相比，无论是以高压汞灯，还是以氙灯为光源，cucro2-wo3和cucro2-zno的光催化产氢活性都有显著提高。
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