Cu/ACF adsorbent modified by non-thermal plasma for simultaneous adsorption–oxidation of H_(2)S and PH_(3)  

作　　者：Xinyu Yang Kai Li Chi Wang Fei Wang Xin Sun Yixing Ma Yuan Li Lei Shi Ping Ning 

机构地区：[1]Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China [2]National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries,Kunming University of Science and Technology,Kunming 650500,China [3]Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China

出　　处：《Journal of Environmental Sciences》2023年第5期641-651,共11页环境科学学报（英文版）

基　　金：funding for this study received from the Fundamental Research Funds for the National Natural Science Foundation of China(Nos.21876071,51968034,41807373 and 21667015);Science and Technology Program of Yunnan province(No.2019FB069).

摘　　要：Non-thermal plasma(NTP)surface modification technology is a new method to control the surface properties of materials,which has been widely used in the field of environmental protection because of its short action time,simple process and no pollution.In this study,Cu/ACF(activated carbon fiber loaded with copper)adsorbent was modified with NTP to remove H_(2)S and PH_(3) simultaneously under low temperature and micro-oxygen condition.Meanwhile,the effects of different modified atmosphere(air,N_(2) and NH_(3)),specific energy input(0–13 J/mL)and modification time(0–30 min)on the removal of H_(2)S and PH_(3) were investigated.Performance test results indicated that under the same reaction conditions,the adsorbent modified by NH_(3) plasma with 5 J/mL for 10 min had the best removal effect on H_(2)S and PH_(3).CO_(2) temperature-programmed desorption and X-ray photoelectron spectroscopy(XPS)analyzes showed that NH_(3) plasma modification could introduce amino functional groups on the surface of the adsorbent,and increase the types and number of alkaline sites on the surface.Brunauer-Emmett-Teller and scanning electron microscopy showed that NH_(3) plasma modification did not significantly change the pore size structure of the adsorbent,but more active components were evenly exposed to the surface,thus improving the adsorption performance.In addition,X-ray diffraction and XPS analysis indicated that the consumption of active components(Cu and Cu_(2)O)and the accumulation of sulfate and phosphate on the surface and inner pores of the adsorbent are the main reasons for the deactivation of the adsorbent.

关 键 词：Non-thermal plasma(NTP) Surface modification Simultaneous adsorption-oxidation Cu/ACF(activated carbon fiber loaded with copper) H_(2)S PH_(3) 

分 类 号：X701[环境科学与工程—环境工程] TQ424[化学工程]