CAJ | 학술논문

采用溶胶–凝胶法对盐酸预处理后的活性炭(activated carbon，AC)进行负载TiO2改性处理，利用扫描电镜(SEM)、能谱分析(EDS)、比表面积及孔径测试(BET)、热重分析(TG/DTG)、傅立叶红外光谱分析(FTIR)等对负载TiO2前后的活性炭结构与理化性能进行表征，并利用电化学工作站测试其电化学性能。结果表明，凝胶的最佳煅烧温度为450℃，制得的TiO2/AC复合体表面及孔道中有絮状或颗粒状的TiO2存在，Ti元素含量(质量分数)为24.91%，晶体类型为锐钛矿型；同时，TiO2/AC表面形成一些Ti—O键的含氧官能团。活性炭负载TiO2改性后，比表面积降低23.1%，比电容升高16.4%，电吸附性能提高，可作为电极材料用于去除废水中的无机盐离子。
채용용효–응효법대염산예처리후적활성탄(activated carbon，AC)진행부재TiO2개성처리，이용소묘전경(SEM)、능보분석(EDS)、비표면적급공경측시(BET)、열중분석(TG/DTG)、부립협홍외광보분석(FTIR)등대부재TiO2전후적활성탄결구여이화성능진행표정，병이용전화학공작참측시기전화학성능。결과표명，응효적최가단소온도위450℃，제득적TiO2/AC복합체표면급공도중유서상혹과립상적TiO2존재，Ti원소함량(질량분수)위24.91%，정체류형위예태광형；동시，TiO2/AC표면형성일사Ti—O건적함양관능단。활성탄부재TiO2개성후，비표면적강저23.1%，비전용승고16.4%，전흡부성능제고，가작위전겁재료용우거제폐수중적무궤염리자。
Activated carbon (AC) was loaded with TiO2 by using sol-gel method after a pretreatment process, and the physical and chemical properties of the activated carbon before and after loaded with TiO2 nanoparticles were characterized by using Scanning Electron Microscopy (SEM), Energy Dispersion Spectrum analyzer (EDS), Brunauer-Emmett-Teller gas adsorption method (BET), thermal gravimetric analysis (TG-DTG), and Fourier Transform Infrared spectroscopy (FTIR) respectively. Electrochemical properties were characterized by electrochemical workstation and electrical adsorption deionization tests. The results show that the optimal temperature is 450℃, and there is flocculent or granulate TiO2 in the surface and pores of TiO2/AC composite under the temperature. The mass fraction of titanium element in the TiO2/AC complex is about 24.91%, and TiO2crystal is anatase type. Meanwhile, Ti—O bonds are found on the surface of the activated carbon material after loaded with TiO2. The specific surface area significantly decreases by 23.1% and its specific capacitance increases by 16.4% in comparison with original activated carbon, and its electrical adsorption efficiency also increses. TiO2/AC composite material can be used as an electrode material for the removal of the inorganic ions in wastewater.