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纳米TiO_2改性竹炭吸附与降解空气中苯的研究 预览

Adsorption and Degradation of Benzene in Atmosphere by Nanometer-TiO_2 Modified Bamboo Charcoal
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摘要 采用纳米TiO2对竹炭进行改性,并结合FT-IR、EPR图谱及SEM对其性能和结构进行表征,通过气相色谱法研究了改性竹炭对空气中苯的净化效果。结果表明,TiO2既负载到竹炭孔隙的边沿和表面,又没有堵塞竹炭的特殊孔隙,且改性竹炭的自旋数由8.7×1013增加到8.9×1017。结果显示,纳米改性竹炭可将空气中的苯污染物降解为无毒、无害的二氧化碳和水,且在紫外灯照射下的降解效果最好;当纳米TiO2含量为3%时,改性竹炭降解苯12h的净化率可达93.50%。 Bamboo charcoal was modified by nanometer-TiO 2 .Properties and structures of modified bamboo charcoal were investigated by FT-IR,EPR and SEM.According to the results,TiO 2 can be loaded on the brim and surface of the pores in bamboo carbon without blocking them,and the amount of non-conjugated electron in modified bamboo charcoal was raised from 8.7×1013 to 8.9×1017.Purification effect to benzene in atmosphere by modified bamboo charcoal was determined by GC.The results indicate that modified bamboo charco...
作者 周建斌 邓丛静 傅金和 张齐生 Zhou Jianbin1; Deng Congjing1; Fu Jinhe2; Zhang Qisheng3 (1 College of Chemical Engineering; Nanjing Forestry University; Nanjing 2 International Network for Bamboo and Rattan; Beijing 100102 3 Bamboo Engineering Research Center Nanjing Forestry University; Nanjing 210037);
出处 《世界竹藤通讯》 2009年第5期共5页 World Bamboo and Rattan
基金 国家重点基础研究发展计划(973计划)(2004CB720601)
关键词 纳米TIO2 改性竹炭 吸附 降解 Nanometer-TiO 2 modified bamboo charcoal adsorption degradation benzene
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