A new analytical method based on bismuth oxide-fullerene nanoparticles and photocatalytic oxidation technique for toluene removal from workplace air

C. Jamshidzadeh, H. Shirkhanloo
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引用次数: 20

Abstract

A new sorbent based on mixture of bismuth oxide-fullerene nanoparticles (Bi2O3-NF) was used for degradation/removal of toluene from workplace and artificial air by UV-photocatalytic oxidation method (UV-PCOM). By set up of  pilot, standard gas of toluene was generated with difference concentrations, and then was passed through UV lamp-glass quartz cell accessory(UV-GQC) by SKC pump at optimized flow rate. Following the UV irradiation, the electrons and holes can undergo redox reactions with toluene on the Bi2O3 surface that lead to the formation of toluene intermediates and toluene. Toluene and intermediates was physically and radically absorbed on the 200 mg of NF at room temperature and then, desorbed from it at 185 OC before determined by GC/FID. In optimized conditions, the adsorption capacity and removal efficiency of NF were obtained 212 mg g-1 and more than 95%, respectively.
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基于氧化铋-富勒烯纳米颗粒和光催化氧化技术的新分析方法去除工作场所空气中的甲苯
采用紫外光催化氧化法(UV-PCOM),研究了新型氧化铋-富勒烯纳米颗粒(Bi2O3-NF)吸附剂对工作场所和人工空气中甲苯的降解和去除效果。通过建立中试装置,产生不同浓度的甲苯标准气体,经SKC泵以最佳流量通过UV-玻璃石英管附件(UV- gqc)。在UV照射下,电子和空穴在Bi2O3表面与甲苯发生氧化还原反应,生成甲苯中间体和甲苯。甲苯和中间体在室温下被200 mg的NF物理吸收,185℃下被解吸,然后用GC/FID测定。在优化条件下,纳滤膜的吸附量为212 mg g-1,去除率为95%以上。
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