Interfacial Super-Assembly of Ordered Mesoporous Carbon-Silica/AAO Hybrid Membrane with Enhanced Permselectivity for Temperature- and pH-Sensitive Smart Ion Transport

  • Shan Zhou
  • , Lei Xie
  • , Xiaofeng Li
  • , Yanan Huang
  • , Liping Zhang
  • , Qirui Liang
  • , Miao Yan
  • , Jie Zeng
  • , Beilei Qiu
  • , Tianyi Liu
  • , Jinyao Tang
  • , Liping Wen
  • , Lei Jiang
  • , Biao Kong

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

Nanofluidic devices have been widely used for diode-like ion transport and salinity gradients energy conversion. Emerging reverse electrodialysis (RED) nanofluidic systems based on nanochannel membrane display great superiority in salinity gradient energy harvesting. However, the imbalance between permeability and selectivity limits their practical application. Here, a new mesoporous carbon-silica/anodized aluminum (MCS/AAO) nanofluidic device with enhanced permselectivity for temperature- and pH-regulated energy generation was obtained by interfacial super-assembly method. A maximum power density of 5.04 W m−2 is achieved, and a higher performance can be obtained by regulating temperature and pH. Theoretical calculations are further implemented to reveal the mechanism for ion rectification, ion selectivity and energy conversion. Results show that the MCS/AAO hybrid membrane has great superiority in diode-like ion transport, temperature- and pH-regulated salinity gradient energy conversion.

Original languageEnglish
Pages (from-to)26167-26176
Number of pages10
JournalAngewandte Chemie - International Edition
Volume60
Issue number50
DOIs
StatePublished - 6 Dec 2021
Externally publishedYes

Keywords

  • enhanced permselectivity
  • ordered mesoporous carbon-silica
  • salinity gradient energy conversion
  • super-assembly
  • temperature- and pH-sensitive

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