Structural and Photocatalytic Properties of TiO2/Zeolite Synthesized using Sol-Gel Method

Alchemy Journal of Chemistry Pub Date : 2019-03-30 DOI:10.18860/al.v7i1.8168

N. Aini, Fahmi Eksa Sagita, Khoridatud Diyanah, A. Arifah, S. N. Chasanah, A. Prasetyo

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Abstract

Titanium dioxide (TiO₂) is supported into natural zeolite to enhance its photocatalytic activity. TiO₂/zeolite is synthesized using sol-gel method at composition ratio of 5:95; 10:90; 20:80 and 30:70%. Structural properties are measured by X-ray diffraction showed TiO₂/zeolite in various composition has characteristic of anatase and modernite phase. The energy dispersive spectroscopy characterization shows TiO₂/zeolite containing Ti element which indicates that TiO₂_is successfully supported into natural zeolite_.Vibration mode of Infrared and Raman spectra tend shifted to higher wavenumber as increasing of TiO₂ content indicating the higher energy vibration due to molecular interaction between TiO₂ and zeolite. Photocatalytic activity test toward methylene blue degradation shows that TiO₂/zeolite has higher activity than TiO₂ and zeolite itself.

Keywords: Photocatalyst, titanium dioxide, zeolite

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溶胶-凝胶法制备TiO2/沸石的结构和光催化性能

将二氧化钛(TiO2)负载到天然沸石中，以提高其光催化活性。采用溶胶-凝胶法合成TiO2/沸石，组成比为5:95;10:90;20:80和30:70。x射线衍射测定了不同组成的TiO2/沸石具有锐钛矿和现代石相的特征。能谱表征表明TiO2/沸石中含有Ti元素，表明TiO2被成功负载到天然沸石中。随着TiO2含量的增加，红外和拉曼光谱的振动模式向更高的波数偏移，表明TiO2与沸石之间的分子相互作用导致了更高的能量振动。对亚甲基蓝降解的光催化活性测试表明，TiO2/沸石比TiO2和沸石本身具有更高的光催化活性。关键词:光催化剂，二氧化钛，沸石

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Alchemy Journal of Chemistry

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8 weeks