| S掺杂形式对TiO2基光催化剂结构和性能的影响 |
| The Effect of S-Doping Methods on Structure and Activity of TiO2 Based Photocatalysts |
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| 摘要: 采用改进的Sol-gel法制备了S-TiO2和TiO2，用1 mol·L-1的H2SO4对TiO2进行表面修饰制成的SO42-/TiO2。采用XRD、IR、UV-Vis、SEM和EDS等技术对催化剂的结构进行了表征，以L酸(1-萘酚-5-磺酸)为目标物，考察了所制备的催化剂的性能．结果表明：S-TiO2的禁带宽度明显降低，并且对400~650 nm区域的可见光都有一定的吸收，其可见光活性和紫外光活性均高于SO42-/TiO2和纯TiO2。 |
| 关键词: 硫掺杂 SO42-表面修饰 光催化活性 |
| 基金项目: |
| Abstract: The S-TiO2 and TiO2 were prepared by the improved sol-gel method, the SO42-/TiO2 was prepared by impregnation of TiO2 with H2SO4 solution(1 mol·L-1). The photocatalysts were characterized by XRD, IR, UV-Vis, SEM，EDS and the photocatalytic activities were evaluated by photodegradation of L-acid(1-naphthol-5-sulfonic acid) under ultraviolet and visible light radiation. The results showed that the band gap of S-TiO2 was reduced obviously, the visible light absorption was extended to 400~650 nm, and the photocatalytic activities were higher than both SO42-/TiO2 and pure TiO2 under either ultraviolet radiation or visible light radiation. |
| Keywords: S-doping SO42- surface modification photocatalytic activity |
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| 王玉萍,曹金丽,彭盘英.S掺杂形式对TiO2基光催化剂结构和性能的影响[J].无机化学学报,2009,25(11):2010-2015. |
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