Photocatalytic activities of NH3-treated titanias modified with other elements
Photocatalytic activities of NH3-treated titanias modified with other elements
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DOI：
10.1016/j.apcatb.2005.11.033
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发表时间：
2007-01
影响因子：
22.1
通讯作者：
H. Ozaki;Naho Fujimoto;S. Iwamoto;M. Inoue
中科院分区：
文献类型：
--
作者：
H. Ozaki;Naho Fujimoto;S. Iwamoto;M. Inoue
采用四异丙醇钛与1,4-丁二醇的热反应（糖热反应）制得纳米晶钛。本研究采用糖热法制备了不同元素（B、Mg、Al、P、Zn、Ga）修饰的钛。得到的样品进行了硝化，并对其物理和光催化性能进行了研究。在6种改性剂中，P的加入对可见光下乙醛的光催化分解效果最好。经过硝化和退火后，p修饰的二氧化钛在可见光区（400-550nm）表现出较强的吸收。结果表明，光催化活性与锐钛矿结构中氮原子的掺杂量有关。
Nanocrystalline titanias were obtained by thermal reaction of titanium tetraisopropoxide in 1,4-butanediol (glycothermal reaction). In this study, titanias modified with various elements (B, Mg, Al, P, Zn, and Ga) were prepared by the glycothermal method. The obtained samples were nitrified and their physical and photocatalytic properties were investigated. Among the six modifiers examined, addition of P was the most effective for photocatalytic decomposition of acetaldehyde under visible-light irradiation. After nitrification and annealing, the P-modified titania showed a strong absorption in the visible region (400–550nm). It was found that the photocatalytic activity was related to the amount of nitrogen atoms doped in the anatase structure.