文献类型：期刊文献

英文题名：Polydopamine modified cyclodextrin polymer as efficient adsorbent for removing cationic dyes and Cu2+

作者：Chen, Huafeng[1];Zhou, Yi[1];Wang, Jianyu[1];Lu, Jian[1];Zhou, Yanbo[1,2,3]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, 1515 Zhongshan Second North Rd, Shanghai 200092, Peoples R China

年份：2020

卷号：389

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20195207926520);WOS:【SCI-EXPANDED(收录号:WOS:000524479100060)】；

基金：The authors would like to express their sincere gratitude to the National Key Research and Development Program of China (2017YFB0602601), the National Water Pollution Control and Treatment Science and Technology Major Project (2017ZX07207002), the National Natural Science Foundation of China (51778230), Shanghai Rising-Star Program (17QA1401000), Shanghai Sailing Program (19YF1411900) and the Fundamental Research Funds for the Central Universities (222201718003) for their financial support.

语种：英文

外文关键词：Adsorption; Polydopamine; Dyes; Heavy metal; Cyclodextrin

摘要：An eco-friendly polydopamine composite adsorbent (CD-CA/PDA) based on cyclodextrin polymer was prepared for cationic dyes and metals removing. CD-CA/PDA, combining the advantages of cyclodextrin and polydopamine, which has quite abundant carboxyl and catechol groups, so methylene blue (MB), malachite green (MG), crystal violet (CV) and copper ion (Cu2+) can be easily removed by electrostatic force. Adsorption kinetic results showed all adsorption process fitted well with pseudo-second-order model. In addition, the isotherm fitted results showed that the adsorption processes of CD-CA/PDA on MG and Cu2+ were consistent with sips model, while the adsorption processes of MB and CV agreed well with Freundlich and Langmuir model, respectively. The fitted adsorption capacities of CD-CA/PDA for MB, MG, CV and Cu2+ were 582.95 mg/g (1.82 mmol/g), 1174.67 mg/g (3.22 mmol/g), 473.01 mg/g (1.16 mmol/g) and 73.64 mg/g (1.16 mmol/g), respectively. Moreover, it is worth noting that cationic dyes have no competitive adsorption in series. CD-CA/PDA is of great recyclability, and can be reused by at least 5 times. Due to the facile and eco-friendly preparation process and excellent adsorption performance, CD-CA/PDA has a great potential in the field of wastewater treatment.