文献类型：期刊文献

英文题名：Ion imprinted adsorbent for the removal of Ni(II) from waste water: preparation, characterization, and adsorption

作者：Zhang, Yong[1];Bai, Zhishan[1];Luo, Wenqiang[1];Zhai, Linlin[1];Wang, Bingjie[1];Kang, Xiaohu[1];Zong, Jieqiong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：40

期号：12

起止页码：1751

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20190406412190);WOS:【SCI-EXPANDED(收录号:WOS:000494259100008)】；

语种：英文

外文关键词：Waster water; nickel ions; carboxymethyl chitosan; ion imprinting; adsorption

摘要：In this paper, a selective nickel ions chelating adsorbents (Ni-CMCS) were prepared based on carboxymethyl chitosan by ion imprinting technique. Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used to investigate their physicochemical properties. Brunauer-Emmett-Teller (BET) analysis showed that the BET surface area of Ni-CMCS had a significant increase after ion imprinting process. The effects of pH value, contact time and initial concentration of Ni(II) were studied. The adsorption kinetics were investigated, which indicated that Ni-CMCS was better fitted with pseudo-second-order kinetic model (R-2 = 0.9991) with film diffusion process as rate controlling step. The adsorption isotherms study indicated that Langmuir model matched better with the experimental data for Ni-CMCS (R-2 = 0.9617). Besides, the maximum adsorption capacity calculated from the Langmuir equation was 82.78?mg g(?1). Moreover, the selectivity experiment suggested that Ni-CMCS had good selectivity in the presence of Co(II), Mn(II), or Cd(II). After used four cycles, Ni-CMCS kept great adsorption capacity.