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Dai L, Xu F, Huang K, Xia Y, Wang Y, Qu K, Xin L, Zhang D, Xiong Z, Wu Y, Guo X, Jin W, Xu Z. Ultrafast Water Transport in Two-Dimensional Channels Enabled by Spherical Polyelectrolyte Brushes with Controllable Flexibility. Angew Chem Int Ed Engl 2021; 60:19933-19941. [PMID: 34128294 DOI: 10.1002/anie.202107085] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Indexed: 11/08/2022]
Abstract
Fast water transport channels are crucial for water-related membrane separation processes. However, overcoming the trade-off between flux and selectivity is still a major challenge. To address this, we constructed spherical polyelectrolyte brush (SPB) structures with a highly hydrophilic polyelectrolyte brush layer, and introduced them into GO laminates, which increased both the flux and the separation factor. At 70 °C, the flux reached 5.23 kg m-2 h-1 , and the separation factor of butanol/water increased to ≈8000, which places it among the most selective separation membranes reported to date. Interestingly, further studies demonstrated that the enhancement of water transport was not only dependent on the hydrophilicity of the polyelectrolyte chains, but also influenced by their flexibility in the solvent. Quartz crystal microbalance with dissipation and molecular dynamics simulations revealed the structure-performance correlations between water molecule migration and the flexibility of the ordered polymer chains in the 2D confined space.
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Affiliation(s)
- Liheng Dai
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Fang Xu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Kang Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Yongsheng Xia
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Yixing Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Kai Qu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Li Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Dezhu Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Zhaodi Xiong
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Yulin Wu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Zhi Xu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, No.130 Meilong Road, Shanghai, 200237, China
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Dai L, Xu F, Huang K, Xia Y, Wang Y, Qu K, Xin L, Zhang D, Xiong Z, Wu Y, Guo X, Jin W, Xu Z. Ultrafast Water Transport in Two‐Dimensional Channels Enabled by Spherical Polyelectrolyte Brushes with Controllable Flexibility. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Liheng Dai
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Fang Xu
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Kang Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University No. 30 Puzhu South Road Nanjing 211816 China
| | - Yongsheng Xia
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University No. 30 Puzhu South Road Nanjing 211816 China
| | - Yixing Wang
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Kai Qu
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Li Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University No. 30 Puzhu South Road Nanjing 211816 China
| | - Dezhu Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University No. 30 Puzhu South Road Nanjing 211816 China
| | - Zhaodi Xiong
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Yulin Wu
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University No. 30 Puzhu South Road Nanjing 211816 China
| | - Zhi Xu
- State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology No.130 Meilong Road Shanghai 200237 China
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Wang Y, Li L, Wang Y, Yang Q, Ye Z, Sun L, Yang F, Guo X. Effect of Counterions on the Interaction among Concentrated Spherical Polyelectrolyte Brushes. Polymers (Basel) 2021; 13:1911. [PMID: 34201338 PMCID: PMC8227004 DOI: 10.3390/polym13121911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/05/2021] [Accepted: 06/07/2021] [Indexed: 11/16/2022] Open
Abstract
The effect of counterions on interactions among spherical polyelectrolyte brushes (SPBs) was systematically investigated by rheology, small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS). The SPB particles consist of a solid polystyrene (PS) core with a diameter of ca.100 nm and a chemically grafted poly-(acrylic acid) (PAA) brush layer. Metal ions of different valences (Na+, Mg2+ and Al3+) were used as counterions to study the interactions among concentrated SPBs. The so-called "structure factor peak" in SAXS, the "local ordered structure peak" in WAXS and rheological properties indicated the interactions among concentrated SPBs. Combining SAXS, WAXS and rheology, the formation mechanism of the local ordered structure among PAA chains in the overlapped area of adjacent SPB, which was generated due to the bridge function of counterions, was confirmed. In contrast, excessive counterions shielded the electrostatic interaction among PAA chains and destroyed the local ordered structure. This work enriches our understanding of the polyelectrolyte assembly in concentrated SPBs under the effect of counterions and lays the foundations for SPB applications.
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Affiliation(s)
- Yunwei Wang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
| | - Li Li
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
| | - Yiming Wang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
| | - Qingsong Yang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
| | - Zhishuang Ye
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
| | - Liang Sun
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Shihezi 832000, China;
| | - Fan Yang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (Y.W.); (Y.W.); (Q.Y.); (Z.Y.); (F.Y.)
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Shihezi 832000, China;
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Wang Y, Li L, Wang Y, Yang Q, Ye Z, Fu Z, Sun L, Guo X. Coacervation of Spherical Polyelectrolyte Brushes with Additional Polyelectrolytes Bearing Positive or Negative Charges. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6388-6396. [PMID: 34008987 DOI: 10.1021/acs.langmuir.1c00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
By combining small-angle X-ray scattering, wide-angle X-ray scattering, and rheology, the effect of additional polyelectrolyte chains on interactions among spherical polyelectrolyte brushes (SPB) was systematically investigated both on microscopic and macroscopic levels. The negatively charged poly(acrylic acid) (PAA) chains and positively charged poly(dimethyl diallyl ammonium chloride) (PDDA) chains were used as additional polyelectrolyte chains to investigate the local ordered structure and the "polyelectrolyte peak" among SPB. Interestingly, coacervation appeared in the SPB emulsion while introducing additional free polyelectrolyte chains. The addition of excess positively charged PDDA chains would lead to the transformation of the SPB emulsion from the coacervation to the aggregation, while it has not been observed in the case of PAA chains. Moreover, it was further confirmed that the specific local ordered structure was caused by the electrostatic interaction among polyelectrolyte chains of adjacent SPB. This work could enrich our understanding of polyelectrolyte assembly in concentrated SPB, thereby greatly broadening the application fields of SPB.
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Affiliation(s)
- Yunwei Wang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Li Li
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Yiming Wang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Qingsong Yang
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Zhishuang Ye
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Zhinan Fu
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Liang Sun
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, P.R. China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology (Ministry of Education), and International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Shihezi, Xinjiang 832000, P.R. China
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