基于响应面的可见光催化材料制备与优化

doi:10.13278/j.cnki.jjuese.201506207

摘要/Abstract

摘要：

为使TiO₂能在可见光作用下发挥光催化作用,并易于从水中分离,将掺有稀土金属离子Er³⁺的上转换发光剂Er³⁺:YAlO₃与TiO₂采用溶胶-凝胶法结合,再将其负载于聚氨酯海绵(PS)载体表面,制备Er³⁺:YAlO₃/TiO₂-PS光催化剂。利用响应面(RSM)方法对光催化材料制备条件进行优化,根据中心组合设计方法设计出3因素5水平析因实验,以光催化剂对苯酚的降解率作为响应值,得到最佳的催化剂制备条件:在水热处理温度110~114 ℃、光催化剂中TiO₂质量浓度60~65 mg/L、海绵/溶胶负载比20 g/L时苯酚降解率最佳,与实测结果相符。

关键词: 上转换发光, 光催化, 响应面分析, 苯酚, 聚氨酯海绵

Abstract:

In order to develop the high photocatalytic performance of TiO₂ under visible light and make it easy to be separated from the treated liquid, a visible light response photocatalyst is prepared through doping of the upconversion luminescence agent Er³⁺:YAlO₃ with TiO₂, and immobilizing Er³⁺:YAlO₃/TiO₂ on the surface of Polyurethane Sponge (PS) by use of sol-gel method. Based on the surface response methodology (RSM), an experiment is designed to assess the individual and interaction effects of the three operating parameters (hydrothermal treatment temperature, TiO₂ concentration, and PS-to-TiO₂ sol ratio) on the efficiency of phenol removal. The corresponding optimum preparing conditions are 110-114 ℃, 60-65 mg/L, and 20 g/L. The measured efficiency of phenol removal is maximijed under these conditions.

Key words: upconversion luminescence, photocatalytic degradation, response surface methodology, phenol, polyurethane sponge

中图分类号:

TU992.3

邹东雷, 李婷婷, 高梦薇, 钱宁, 张高瑞洋, 董双石. 基于响应面的可见光催化材料制备与优化[J]. 吉林大学学报(地球科学版), 2015, 45(6): 1833-1838.

Zou Donglei, Li Tingting, Gao Mengwei, Qian Ning, Zhang Gaoruiyang, Dong Shuangshi. Preparation and Optimization of the Photocatalytic Materials Under Visible Light with Response Surface Methodology[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(6): 1833-1838.

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