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首页> 外文期刊>Applied Surface Science >Surface effect of natural zeolite (clinoptilolite) on the photocatalytic activity of TiO2
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Surface effect of natural zeolite (clinoptilolite) on the photocatalytic activity of TiO2

机译：天然沸石（斜发沸石）对TiO2光催化活性的表面影响

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The surface interaction between TiO2 and natural zeolite, clinoptilolite, has been investigated by means of transmission electron microscope (TEM), atom force microscope (AFM), X-ray diffractometer (XRD), diffuse reflectance infrared Fourier transform (DRIFT) and far Fourier transform infrared ray (FTIR) spectroscopy. And the photocatalytic degradation (PCD) rate of methyl orange (MO), a model of recalcitrant azo dye, in aqueous system has been measured to compare the photocatalytic. activities of different photocatalysts. A model has been carried out to explain the incorporation between TiO2 Particles and natural zeolite. The results show that the TiO2 particles loaded on zeolite are 50 nm or so, smaller than the pure one, and combine with zeolite via chemical force. Since the reserved adsorption ability and the existence of electron trapper, the TiO2-zeolite performed more efficient at low initial concentration and in the later period of PCD process, as compared with pure TiO2 nanopowders. (c) 2005 Elsevier B.V. All rights reserved.
机译：通过透射电子显微镜（TEM），原子力显微镜（AFM），X射线衍射仪（XRD），漫反射红外傅里叶变换（DRIFT）和远傅里叶研究了TiO2与天然沸石斜发沸石的表面相互作用。变换红外（FTIR）光谱。并测定了难降解的偶氮染料模型甲基橙（MO）在水体系中的光催化降解（PCD）速率，以比较光催化性能。不同光催化剂的活性。已经进行了一个模型来解释TiO2颗粒和天然沸石之间的结合。结果表明，负载在沸石上的TiO2颗粒约50 nm，小于纯纳米颗粒，并通过化学力与沸石结合。由于保留的吸附能力和电子陷阱的存在，与纯TiO2纳米粉相比，TiO2-沸石在较低的初始浓度和PCD过程的后期表现出更高的效率。 （c）2005 Elsevier B.V.保留所有权利。

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