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光催化型TiO_2溶胶的制备和分析 被引量:21
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作者 高基伟 杨辉 申乾宏 《电子元件与材料》 CAS CSCD 北大核心 2006年第8期39-40,共2页
以sol-gel工艺,采用钛酸丁酯-水-无水乙醇-盐酸体系材料,以过量水强迫前驱体充分水解,制备出具有光催化性能的氧化钛晶体溶胶。通过XRD、TEM和UV/vis测试得知,溶胶中含有原位自生长的、边长约150nm的正方形锐钛矿晶体,所以溶胶在常温下... 以sol-gel工艺,采用钛酸丁酯-水-无水乙醇-盐酸体系材料,以过量水强迫前驱体充分水解,制备出具有光催化性能的氧化钛晶体溶胶。通过XRD、TEM和UV/vis测试得知,溶胶中含有原位自生长的、边长约150nm的正方形锐钛矿晶体,所以溶胶在常温下干燥后所得粉体,无需高温热处理即为锐钛矿晶型;溶胶中晶体的禁带宽度为3.58eV,具有较强的光催化性,所以溶胶(而非常见的粉体或者薄膜)在紫外光照下可使罗丹明B褪色。 展开更多
关键词 无机非金属材料 TIO2 光催化型溶胶 锐钛矿晶体
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Low temperature doping of anatase nano TiO2
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作者 ZHU Tang-long WANG Li-ming SHEN Yong WANG Ping SHEN Yang-yang 《International English Education Research》 2015年第9期104-112,共9页
In this paper. Glucose, nitrate, and urea were respectively used as C, B, and N sources doped TiO2 at low temperature sol gel method, The obtained nano TiO2 was characterized by DRS, FIRT, TG-DTG. The photocatalytic p... In this paper. Glucose, nitrate, and urea were respectively used as C, B, and N sources doped TiO2 at low temperature sol gel method, The obtained nano TiO2 was characterized by DRS, FIRT, TG-DTG. The photocatalytic properties and the optical response range of the natase nanocrystalline were analyzed and studied with the hybrid orbital theory. The results show that the band gap of the doped TiO2 was narrow, and the photocatalytic ability could be excited by the visible lighL and the doping of non metallic elements broadens the application range of TiO2, so that it could be excited under the visible light and obtained better use value. 展开更多
关键词 Sol-gel metho& Natase nanocrystalline Low temperature Non-metallic doping Visible light
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