• 关键词：微波水热法  Ti-MCM-41  介孔材料  光催化降解

• 基金项目：中央高校基本科研业务费专项基金（青年教师资助计划）

• 闫彩云
• 兰州交通大学环境与市政工程学院, 兰州 730070

• 陈汉林
• 华南理工大学环境与能源学院, 广州 510006

• 常青
• 兰州交通大学环境与市政工程学院, 兰州 730070

• 彭彦彬
• 华南理工大学环境与能源学院, 广州 510006

• 摘要：本研究利用微波水热法合成Ti-MCM-41，并采用XRD、FTIR、BET、XPS及TEM等技术对材料进行表征.同时，使用甲基橙溶液作为光催化氧化的对象，对光催化剂的氧化性能进行考察.实验结果表明：利用微波水热法合成Ti-MCM-41，可将合成时间缩短至3 h，能够大大缩减反应时间并节省能源.通过在MCM-41多孔结构中掺杂钛，可明显提高其光催化活性.在酸性溶液中，Ti-MCM-41的催化氧化效率较高.XRD、FTIR、BET、XPS及TEM等表征结果表明，钛成功地掺入到了MCM-41中，并未破坏其多孔有序的结构，Ti-MCM-41同时兼具介孔材料的高比表面积和二氧化钛的光催化性能，有利于在环境污染修复上的应用.

• Abstract：This study employs microwave-assisted hydrothermal method to synthesize titanium doped MCM-41 (Ti-MCM-41). FTIR, XRD, Nitrogen adsorption-desorption isotherms analysis, XPS and TEM, zeta potential analysis, and UV-vis spectroscopy were conducted to characterize the obtained Ti-MCM-41. The results showed that ① microwave-assisted hydrothermal method not only shortened the synthesis time, but also improved its photocatalytic ability;② FTIR, XRD, BET, XPS, TEM analysis results demonstrated that the titanium atom was successfully doped into the MCM-41 without disturbing the order mesoporous structure; and ③ under 250 W halogen light irradiation, 83% of Methyl Orange (MO) was removed by Ti-MCM-41 in 150 minutes, illustrating the high photocatalytic oxidation ability of Ti-MCM-41.

• Key words：microwave hydrothermal synthesis  Ti-MCM-41  mesoporous materials  photocatalytic degradation

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