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首页> 外文期刊>Кинетика и катализ >CHARACTERIZATION OF PD/TIO2 EMBEDDED IN MULTI-WALLED CARBON NANOTUBE CATALYST WITH A HIGH PHOTOCATALYTIC ACTIVITY
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CHARACTERIZATION OF PD/TIO2 EMBEDDED IN MULTI-WALLED CARBON NANOTUBE CATALYST WITH A HIGH PHOTOCATALYTIC ACTIVITY

机译：光催化活性高壁碳纳米管催化剂中PD / TiO 2的表征

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摘要

Pd particles loading on TiO_2-embedded multi-walled carbon nanotubes (MWCNTs), MWCNTs, and TiO_2 particles were prepared via an impregnation method with palladium(II) chlorate solution followed by heat treatment at high temperature. To characterize the catalysts, BET surface area, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy dispersive X-ray, Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy were employed. The prepared catalysts were tested in degradation of methyl orange under visible light. Pd/TiO_2-MWCNTs catalyst demonstrates the highest photocatalytic activity, and the phase transformation from PdO to Pd~0 phase takes place at heat treatment of embedded TiO_2. The nanoparticles size of TiO_2 can be decreased by introduction of MWCNTs species. Combining structural characterization with kinetic study results we could conclude that the superior catalytic performance could arise due to the Pd/TiO_2-MWCNTs catalysts structure.
机译：通过用氯化钯（II）溶液浸渍法，然后在高温下进行热处理，制备了负载在TiO_2嵌入的多壁碳纳米管（MWCNTs），MWCNTs和TiO_2颗粒上的Pd颗粒。为了表征催化剂，使用了BET表面积，扫描电子显微镜，透射电子显微镜，X射线衍射，能量色散X射线，傅里叶变换红外光谱和紫外可见光谱。测试了所制备的催化剂在可见光下甲基橙的降解。 Pd / TiO_2-MWCNTs催化剂表现出最高的光催化活性，并且在包埋的TiO_2上发生了从PdO到Pd〜0相的转变。可以通过引入MWCNTs来减小TiO_2的纳米颗粒尺寸。将结构表征与动力学研究结果相结合，我们可以得出结论，由于Pd / TiO_2-MWCNTs催化剂的结构，可以产生优异的催化性能。

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