N、La共掺杂纳米TiO_2的制备及其光催化性能 |
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引用本文: | 刘欣伟,陈勇,陈昌兵,谷科成. N、La共掺杂纳米TiO_2的制备及其光催化性能[J]. 工业水处理, 2016, 0(8): 77-80 |
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作者姓名: | 刘欣伟 陈勇 陈昌兵 谷科成 |
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作者单位: | 后勤工程学院国防建筑规划与环境工程系,重庆,401311 |
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基金项目: | 重庆市自然科学基金项目(CSTC2008BB7139) |
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摘 要: | 以钛酸丁酯、尿素、硝酸镧为原料,采用超声辅助溶胶-凝胶法制备了N、La共掺杂纳米TiO_2光催化材料。用XRD、DSC-TG、UV-Vis DRS、FT-IR、SEM、EDS对材料结构和性能进行了表征。以苯酚为目标污染物,考察材料的光催化性能。结果表明:N、La共掺杂协同作用使晶粒细化,材料的光催化活性显著提高;当N掺杂摩尔分数为5%、La掺杂摩尔分数为1%、催化剂用量为1.5 g/L、焙烧温度为500℃时,光催化降解5 mg/L苯酚的效果最佳。
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关 键 词: | 共掺杂 TiO2 光催化 苯酚 |
Preparation of N and La co-doped nano TiO2 and its photocatalytic capacity |
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Abstract: | Using Ti(OC4H9)4,CO(NH2)2,and La(NO3)3·6H2O as raw materials,the photocatalytic material N and La co-doped nano TiO2 has been synthesized via ultrasonic-assisted sol-gel method. The structure and performances of the materials are characterized by XRD,DSC-TG,UV-Vis DRS,FT-IR,SEM,EDS. Phenol,as the target pollu-tant,is used for the evaluation of photocatalytic capacity of materials. The results show that the N and La co-doped synergetic effect makes the crystal grains become refined ,and the photocatalytic activity of materials can be im-proved significantly. When N-doped mole fraction is 5%and La-doped mole fraction 1%,catalyst dosage 1.5 g/L,and calcination temperature 500℃,the effect of the photocatalytic degradation of phenol(5 mg/L) is the best. |
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Keywords: | co-doped TiO2 photocatalysis phenol |
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