Enhanced photocatalytic activity of highly porous ZnO thin films prepared by sol-gel process

Bonamali Pal; Maheshwar Sharon

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Enhanced photocatalytic activity of highly porous ZnO thin films prepared by sol-gel process

机译：溶胶-凝胶法制备的高孔隙率ZnO薄膜的光催化活性增强

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Highly photoactive porous ZnO thin films on glass substrate have been prepared by a sol-gel process using Zn-acetate after sintering at 400℃ temperature. The films consist of spongy particle aggregates with uniform pores at the surface. Structural features and surface morphology were studied by XRD and SEM analyses. These films have been found to decompose aqueous solutions of phenol, chlorophenol, naphthalene and anthracene to CO_2 quite efficiently. Concentrations decreased linearly with illumination time, and high rate constants were obtained for the degradation of these organics. The pH values of the solution changed with the irradiation time due to the formation of hydroxylated intermediate photoproducts which have been detected in many cases.

机译：在400℃温度下烧结后，采用乙酸锌通过溶胶-凝胶法在玻璃基板上制备高光活性多孔ZnO薄膜。薄膜由海绵状聚集体组成，表面具有均匀的孔隙。通过XRD和SEM分析研究了结构特征和表面形态。已经发现这些膜将苯酚，氯苯酚，萘和蒽的水溶液相当有效地分解为CO_2。浓度随照射时间线性降低，并获得了降解这些有机物的高速率常数。由于在许多情况下已检测到羟基化中间光产物的形成，溶液的pH值随照射时间而变化。

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来源
《Materials Chemistry and Physics》 |2002年第1期|p.82-87|共6页
作者
Bonamali Pal; Maheshwar Sharon;
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作者单位

Catalysis Research Center, Hokkaido University, Sapporo 060-0811, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类工程材料学;工程基础科学;
关键词
photocatalysis; ZnO thin film; porous surface; aromatic hydrocarbons degradation;

机译：光催化ZnO薄膜多孔表面芳烃降解;

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Enhanced photocatalytic activity of highly porous ZnO thin films prepared by sol-gel process

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