冲击波法制备氮掺杂TiO2及其光催化降解活性研究
Shock Synthesis of N Doped Titania and Studies of Its Photocatalytic Activity Under Visible Irradiation
冲击波作用能使材料的物理和化学性质发生显著的变化。本文采用炸药爆轰驱动飞片高速撞击产生冲击波的方法对偏钛酸(H2TiO3)和富氮掺杂物双氰胺（C2N4H4）的粉末混合物进行冲击加载，并对回收产物进行了包括XRD, TEM, XPS, BET, UV-vis在内的相关表征，并且对样品进行了可见光催化降解亚甲基蓝和罗丹明B染料的活性评价。结果表明：冲击波掺杂后的氮浓度为3-4%，能带宽度变化较小，但回收样品的比表面积较大，主要是由独特的冲击脱水膨胀机理造成，冲击回收样品表现出对亚甲基蓝和罗丹明B较高的吸附和光催化降解活性。
Shock wave loading in materials can lead to their obvious changes of physical and chemical properties. In this paper, the powder mixtures of rich nitrogen dopants of C2N4H4 and metatitanic acid were shocked using the impact of flyers driven by explosive detonation and the recovered samples were characterized by XRD, TEM, XPS, BET and UV-Vis spectra and evaluated by the photocatalytic degradation of MB and RB. The results indicate that: The doping level is the 3-4%(at.%) corresponding to the small variety of the energy gap using the metatitanic acid as raw materials. The specific surface area of the sample has increased drastically arisen from the unique shock dehydration-expansion mechanism. The shock-doped samples have better adsorption and phtotocatalytic activity under visible irradiation for the degradation of MB and RB.
崔乃夫、张红玲、高翔、刘建军、陈鹏万
化学金属元素无机化合物化学工业化学工业概论
冲击波氮掺杂光催化降解二氧化钛
Shock waveNitrogen dopingPhotocatalytic degradationTitania
崔乃夫,张红玲,高翔,刘建军,陈鹏万.冲击波法制备氮掺杂TiO2及其光催化降解活性研究[EB/OL].(2012-02-14)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201202-379.点此复制
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