Degradable CO2-responsive microgels with wrinkled porous structure for enhanced, selective and recyclable removal of anionic dyes, Cr(VI) and As(V)
Degradable CO2-responsive microgels with wrinkled porous structure for enhanced, selective and recyclable removal of anionic dyes, Cr(VI) and As(V)
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可降解的二氧化碳响应性微凝胶，具有皱纹多孔结构，可增强、选择性和可回收地去除阴离子染料、Cr(VI) 和 As(V)
DOI：
10.1016/j.eurpolymj.2021.110374
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发表时间：
2021-03
影响因子：
6
通讯作者：
Guo Zanru
中科院分区：
文献类型：
--
作者：
He Zhanfeng;Chen Qiang;Luo Yuanyuan;He Yuan;Zhang Yinshan;Liu Tong;Xu Wenyuan;Zhang Jiali;Liu Yongxin;Xiong Leyan;Wang Shaohui;Guo Zanru
吸附剂对污染物的吸附能力强，且可循环使用，不会产生二次污染，是水处理领域极具潜力的吸附剂之一。本文制备了具有大尺寸、褶皱多孔结构的可降解CO2响应性微凝胶。该微凝胶在CO2和N2的交替刺激下发生可逆的体积相变，从而对阴离子染料和类金属（Cr（VI）和As（V））表现出可切换的、选择性的和可回收的吸附。由于褶皱的多孔结构，吸附性能得到改善，对间胺黄（MY）的最大吸附量可达1537 mg g-1。二元和三元体系的竞争吸附结果表明，MY对丽春红S（PS）的亲和力大于Cr（VI）。此外，吸附物可以通过加热或用pH 12的溶液处理来解吸。经CO2引发剂再生的微凝胶在连续10次循环使用后仍表现出较高的吸附能力，可应用于固定床吸附/脱附系统。此外，微凝胶可以被降解。因此，这种可降解的微凝胶在处理复杂工业废水方面具有潜在的应用前景，并避免了废弃吸附剂积累所造成的额外污染。
Adsorbent with high and recyclable adsorption for pollutants without secondary pollution is one of great potential in water treatment. Here, degradable CO2-responsive microgels with big size and wrinkled porous structure were prepared. The microgels underwent reversible volume phase changes upon alternative stimulus of CO2and N2, and thereby exhibited a switchable, selective, and recyclable adsorption for anionic dyes and metalloids (Cr(VI) and As(V)). The adsorption performance was improved due to the wrinkled porous structure, and the maximum adsorption capacity was up to 1537 mg g−1for metanil yellow (MY). The competitive adsorption in binary and ternary system revealed that the affinity was in the order of MY > ponceau S (PS) > Cr(VI). Besides, the adsorbates could be desorbed by heating or treating with solution of pH 12. Microgels regenerated with CO2trigger exhibited high adsorption ability after ten consecutive recycling trials, and could be applied to fixed-bed adsorption/desorption system. Moreover, microgels could be degraded. Thus, this kind of degradable microgels have potential applications in the treatment of complex industrial wastewaters and avoid the additional pollution caused by the accumulation of waste adsorbents.
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影响因子：
15.1
作者：
Ling, Chen;Liu, Fu-Qiang;Long, Chao;Chen, Tai-Peng;Wu, Qiu-Yuan;Li, Ai-Min
通讯作者：
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影响因子：
11.4
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影响因子：
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DOI：
10.1002/cphc.201200025
发表时间：
2012-07
期刊：
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子：
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作者：
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通讯作者：
D. Parasuraman;Avijeet K. Sarker;M. Serpe
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影响因子：
8.8
作者：
Liu, Chongmin;Wu, Pingxiao;Tran, Lytuong
通讯作者：
Tran, Lytuong