当前位置: 首页 > 文章 > 纳米TiO_2改性竹炭对空气中苯的吸附与降解 南京林业大学学报(自然科学版) 2008,32 (6) 9-12
Position: Home > Articles > Adsorption and degradation of benzene in atmosphere by Nano-TiO_2 modified bamboo charcoal Journal of Nanjing Forestry University(Natural Sciences Edition) 2008,32 (6) 9-12

纳米TiO_2改性竹炭对空气中苯的吸附与降解

作  者:
周建斌;邓丛静;傅金和;张齐生
单  位:
南京林业大学化学工程学院;国际竹藤网络中心;南京林业大学竹材工程研究中心
关键词:
纳米TiO2;改性竹炭;吸附;降解;苯
摘  要:
采用纳米二氧化钛(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。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质量分数为3%时,改性竹炭降解苯12 h的净化率可达93.50%。
译  名:
Adsorption and degradation of benzene in atmosphere by Nano-TiO_2 modified bamboo charcoal
作  者:
ZHOU Jian-bin1,DENG Cong-jing 1,FU Jin-he2,ZHANG Qi-sheng3(1.College of Chemical Engineering Nanjing Forestry University,Nanjing 210037,China;2.International Center for Bamboo and Rattan,Beijing 100102,China;3.Bamboo Engineering Research Center Nanjing Forestry University,Nanjing 210037,China)
关键词:
Nano-TiO2;Modified bamboo charcoal;Adsorption;Degradation;Benzene
摘  要:
Bamboo charcoal was modified by Nano-TiO2.The properties and structures of modified bamboo charcoal were investigated by FT-IR,EPR and SEM.According to the results,TiO2 could be loaded on the brim and surface of the pores in bamboo carbon without blocking them.The amount of non-conjugated electron in modified bamboo charcoal was raised from 8.7×1013to 8.9×1017.Purification of benzene in atmosphere by modified bamboo charcoal was determined by GC.The results indicated that modified bamboo charcoal could degrade benzene into carbon dioxide and water.The best efficieney of degrading benzene was obtained under ultraviolet irradiation.When the content of TiO2 reached 3%,the purification rate was up to 93.50% using modified bamboo charcoal for 12 hours.

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