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材料研究学报  2008, Vol. 22 Issue (1): 93-97    
  论文 本期目录 | 过刊浏览 |
钽掺杂对层状钙钛矿镧钛酸钾光催化性能的影响
魏月琳; 黄昀昉; 陈海庭; 吴季怀
华侨大学材料科学与工程学院福建省高校功能材料重点实验室 泉州
引用本文:

魏月琳; 黄昀昉; 陈海庭; 吴季怀. 钽掺杂对层状钙钛矿镧钛酸钾光催化性能的影响[J]. 材料研究学报, 2008, 22(1): 93-97.

全文: PDF(637 KB)  
摘要: 用高温固相法制备Ta~(5+)掺杂的K_(2-x)La_2Ti_(3-x)Ta_xO_(10)(x=0.1-1.0)系列层状钙钛矿,用XRD,UV-VIS和BET等方法对样品进行表征,研究了钽取代钛对层状钙钛矿镧钛酸钾光催化性能的影响.结果表明,掺杂Ta降低了半导体颗粒能隙,拓展了光响应范围,提高了光催化活性.随着Ta掺杂量的增加,少量Ta团聚覆盖在材料颗粒表面,x增至0.8时发生相转变,导致光催化活性下降.结果表明,K_(1.9)La_2Ti_(2.9)Ta_(0.1)O_(10)具有最佳光催化活性.
关键词 无机非金属材料掺杂光催化    
Key words
收稿日期: 1900-01-01     
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