水热法合成硫化铋及其光催化性能Hydrothermal Synthesis of Bismuth Sulfide and its Photocatalytic Performance
赵彦钊;张亚莉;王兰;宋贝贝;
摘要(Abstract)：
以硝酸铋(Bi(NO3)3·5H2O)和硫脲((NH2)2CS)为原料,采用尿素((NH2)2CO)作为矿化剂,低温水热合成硫化铋(Bi2S3)光催化剂,并利用X-射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外-可见吸收光谱(UV-Vis)等手段对其进行表征。结果表明:生成了纯的Bi2S3,结晶良好,对光的吸收峰产生了蓝移,带隙能量由体相的1.3 e V增大到1.88 e V。光催化降解罗丹明B的结果表明:引入矿化剂((NH2)2CO)提高了Bi2S3的活性。当矿化剂浓度为1 mol/L、水热反应时间为12 h、水热反应温度为120℃时制备的Bi2S3具有良好的光催化效果,在光辐照150 min后,对初始浓度为10 mg/L的罗丹明B溶液的降解率可达92.3%。
关键词(KeyWords)： 硫化铋;水热制备;催化剂;光催化性能
基金项目(Foundation):
作者(Authors): 赵彦钊;张亚莉;王兰;宋贝贝;
DOI: 10.16521/j.cnki.issn.1001-9642.2015.11.010
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