摘要
以硫酸氧钛为钛源,活性炭(AC)为载体,通过常温-浸渍及高温煅烧法制备载钛活性炭材料(AC/Ti O2),利用X线粉末衍射仪(XRD)、扫描电镜(SEM)和傅里叶变换红外光谱仪(FT-IR)等测试手段对所得的样品进行表征,使用紫外可见分光光度计(UV-Vis)测定镍离子浓度,并将制备所得的材料做成电极,在电场下对镍离子进行吸附实验。实验结果表明:红外显示Ti-O键的存在,XRD表明活性炭和负载上的Ti O2分别以类石墨微晶碳和金红石存在;SEM显示活性炭高温煅烧后形貌不规则,但表面较粗糙。电场作用下载钛电极对镍离子的吸附性能优于无电场作用,但随着改性Ti量的增加,吸附性能逐渐降低,C:Ti OSO4质量比在1︰0.001下呈现吸附最佳值,其对Ni^(2+)的去除率分别为未载钛活性炭在无电场、有电场下的3.61倍和4.61倍。
Activated carbon doped with Ti（AC/Ti O2） was prepared by impregnation at room temperature and high temperature calcination using Ti OSO4 as titanium source and activated carbon（AC） as carrier. It was characterized by X-ray powder diffraction（XRD）, scanning electron microscope（SEM） and Fourier transform infrared spectrometer（FT-IR）, and nickel ion concentration was tested by UV-vis spectrophotometer（UV- Vis）. At the same time, nickel ions adsorption experiments were carried out under the electric field using AC/Ti O2 electrode. The experimental results show that active carbon exists as graphite microcrystal and Ti O2 exists as rutile, although its shape is irregular after calcination at high temperature, but the surface is rough. FT-IR indicates the presence of Ti-O bond. Electrode＇s adsorption performance of Ni^2＋ is better at electric field than that of no electric fields, but with the increase of amount of Ti,the adsorption performance gradually reduces, the best performance is at the proportion of C： Ti OSO4 = 1：0. 001, the removal rate of Ni^2＋ is respectively 3.61 times and 4.61 times than that of unloaded activated carbon in the absence or absent of electric field.
出处
《当代化工》
CAS
2015年第12期2739-2741,2744,共4页
Contemporary Chemical Industry
基金
广西高校科学技术研究立项项目:KY2015LX335
河池学院青年科研课题基金资助项目:2014QN-N004
关键词
活性炭
二氧化钛
电增强
Activated carbon
TiO2
Electric enhancement
