Cu-N共掺杂改性纳米TiO_(2)光催化剂制备及甲苯降解  

Preparation of Cu-N co-doping modified nano-TiO_(2) photocatalyst and its toluene degradation performance

作　　者：王军[1] 杨岳 蒲欣 谷丽芬 王其召[2] WANG Jun;YANG Yue;PU Xin;GU Li-fen;WANG Qi-zhao(State Key Laboratory of Petroleum and Petrochemical Pollution Control and Processing,Lanzhou Petrochemical Research Center,PetroChina,Lanzhou 730060,China;College ofChemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China)

机构地区：[1]中国石油兰州化工研究中心石油石化污染控制与处理企业国家重点实验室,甘肃兰州730060 [2]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《石化技术与应用》2022年第3期168-172,共5页Petrochemical Technology & Application

摘　　要：以尿素、硝酸铜、钛酸四丁酯等为原料,采用溶胶-凝胶法,经Cu,N原子共掺杂制备出改性纳米TiO_(2)光催化剂。采用X射线衍射仪、扫描电子显微镜、紫外可见漫反射仪、傅里叶变换红外光谱仪对其进行了分析表征。以甲苯气体为研究对象,考察了制备的TiO_(2)光催化剂对甲苯的光催化降解性能。结果表明:共掺杂改性后的纳米TiO_(2)光催化剂,在可见光400~550 nm处呈现出较强的吸收;当光催化反应120 min时,Cu-N-TiO_(2)光催化剂对甲苯的催化降解转化率达到了38%,较纯纳米TiO_(2)催化剂提高了近4倍。Using urea,cupric nitrate and tetrabutyl titanate as raw materials,the modified nano-TiO_(2) catalyst was prepared by sol-gel method through Cu and N atoms co-doping.The above prepared catalyst was characterized by X-ray diffraction,scanning electron microscopy,UV-vis diffuse reflectance and Fourier transform infrared spectrometer.Then taking toluene gas as the research object,the photocatalytic degradation of toluene by the modified TiO_(2) photocatalyst was investigated.The results showed that the co-doping modified nano-TiO_(2) photocatalyst had showed strong absorption in visible light region of 400-550 nm.When the photocatalytic reaction time was 120 min,the catalytic degradation conversion of Cu-N-TiO_(2) to toluene reached 38%,which was nearly 4 times higher than that of purenano-TiO_(2).

关 键 词：Cu-N共掺杂 光催化剂 纳米TiO_(2) 溶胶-凝胶法 甲苯降解 

分 类 号：O643.36[理学—物理化学]