One-step selective separation and catalytic transformation of an organic pollutant from pollutant mixture via a thermo-responsive semi-IPN/PVDF@Pd bilayer composite membrane
One-step selective separation and catalytic transformation of an organic pollutant from pollutant mixture via a thermo-responsive semi-IPN/PVDF@Pd bilayer composite membrane
复制标题
热响应半IPN/PVDF@Pd双层复合膜一步选择性分离并催化转化污染物混合物中的有机污染物
DOI：
10.1016/j.seppur.2022.120493
复制
发表时间：
2022-01
影响因子：
8.6
通讯作者：
Dong Wan
中科院分区：
文献类型：
--
作者：
Shuai Wang;Xi Chen;Bangkai Li;Xin Shi;Yuanyuan Shi;Jianzu Wang;Jie Pan;Dong Wan
如何从多组分有机污染物中选择性地将污染物转化为有价值的产品是废物处理的一大挑战。本文设计并制备了一种新型温敏双层复合膜，实现了对双组分污染物的选择性分离、催化转化和原位产物分离。该双层膜通过FTIR、XPS、SEM和AFM以及其他技术系统地表征，其包括顶部半互穿聚合物网络（semi-IPN）涂层和底部聚（偏二氟乙烯）@Pd催化层。在连续错流过滤过程中，污染物BSA直接被膜分离，而污染物对硝基苯酚则可控地透过顶部半互穿网络层，然后在催化层中反应;随后，产物对氨基苯酚被原位分离和收集。反应物在反应前被纯化，此外，通过经由顶层将反应物与催化剂隔离，避免了膜表面上的任何意外反应，防止了意外污染物和产物对催化转化的干扰。通过调节温度可以提高转化效率，在30℃、流量为27.0 L·m−2·h−1·bar− 1时，对10 mg/L的对硝基苯酚溶液的转化率最高可达99.74%。
It is a great challenge to selectively translating a pollutant into a valuable product from multi-component organic pollutants for waste treatment. Herein, we design and then fabricate a novel thermo-responsive bilayer composite membrane realizing the selective separation, catalytic transformation and in situ product separation from two-component pollutants in a one-step. This bilayer membrane systematically characterized by FTIR, XPS, SEM and AFM and the other techniques, comprises a top semi- interpenetrating polymer network(semi-IPN) coating layer and a bottom poly(vinylidene fluoride) @Pd catalytic layer. In a continuous cross-flow filtration process, the pollutant BSA is directly separated by the membrane, while the pollutantp-nitrophenol controllably penetrates through the top semi-IPN layer and then reacts in the catalytic layer; subsequently, the productp-aminophenol is in situ separated and collected. The reactant is purified before reaction, further, any unexpected reactions on membrane surface are avoided by isolating reactants from the catalysts via the top layer, preventing the interference of the unexpected pollutants and products for the catalytic transformation. The transformation efficiency can be strengthened by adjusting temperature and an maximum conversion of 99.74% can be obtained for ap-nitrophenol solution of 10 mg/L at a flux of 27.0 L•m−2•h−1•bar−1and a temperature of 30℃.
登录
查看更多内容
半互穿聚合物与TiO2凝胶纳米颗粒协同作用显着增强PVDF膜的防污和分离能力
影响因子：
6.1
作者：
Yongdi Ma;Xi Chen;Shuai Wang;Hualin Dong;Xiaoying Zhai;Xin Shi;Jianzu Wang;Rujiang Ma;Wangqing Zhang
通讯作者：
Wangqing Zhang
影响因子：
5
作者：
Wenqian Wang;Xi Chen;Chu Zhao;Bowu Zhao;H. Dong;Shengkui Ma;Liying Li;Li Chen;Bin Zhang
通讯作者：
Wenqian Wang;Xi Chen;Chu Zhao;Bowu Zhao;H. Dong;Shengkui Ma;Liying Li;Li Chen;Bin Zhang
影响因子：
7.7
作者：
Diyana Kamarudin;N. Awanis Hashim;B. Ong;Yuriko Kakihana;Mitsuru Higa;H. Matsuyama
通讯作者：
Diyana Kamarudin;N. Awanis Hashim;B. Ong;Yuriko Kakihana;Mitsuru Higa;H. Matsuyama
影响因子：
15.1
作者：
Xi Chen;Zeya Wang;Shiyin Bi;Kun Li;Runhong Du;Cheng-Lin Wu;Li Chen
通讯作者：
Xi Chen;Zeya Wang;Shiyin Bi;Kun Li;Runhong Du;Cheng-Lin Wu;Li Chen
影响因子：
8.6
作者：
Wang, Yi-Xing;Ma, Shuai;Xu, Zhi
通讯作者：
Xu, Zhi