摘要
本文以麻竹活性炭为载体,钛酸四丁酯为钛源,采用溶胶-凝胶法制备TiO2/AC复合材料,利用扫描电镜、X射线衍射、傅里叶红外光谱对样品进行表征,并探讨TiO2/AC对亚甲基蓝溶液的吸附-降解行为。试验结果表明,当焙烧温度为450℃时,TiO2以锐钛矿物相负载在活性炭上。在溶液pH值为6时,TiO2/AC对亚甲基蓝的光降解能力最好,经5次吸附-降解-再生试验后,降解率仍可保持在首次的90%以上,且回收率可达95%。
In this paper,TiO2/AC composites were prepared by sol-gel method using activated carbon as the carrier and tetrabutyl titanate as the titanium source,the samples were characterized by scanning electron microscopy,X-ray diffraction and Fourier transform infrared spectroscopy,the adsorption-degradation behavior of TiO2/AC on methylene blue solution was investigated.The test results show that when the calcination temperature is 450℃,TiO2 is supported on the activated carbon with anatase mineral phase.When the pH value of the solution is 6,TiO2/AC has the best photodegradation ability to methylene blue.After 5 adsorption-degradation-regeneration tests,the degradation rate can still be maintained at more than 90%for the first time,and the recovery rate can reach 95%.
作者
林美容
Lin Meirong(Nanjing Branch of Zhangzhou Municipal Ecological Environment Bureau,Zhangzhou 363000,China)
出处
《中国资源综合利用》
2019年第11期29-31,共3页
China Resources Comprehensive Utilization
关键词
活性炭
TIO2
光降解
再生
activated carbon
TiO2
photocatalytic degradation
regeneration
