Single-Layer Hexagonal Boron Nitride Nanopores as High-Performance Ionic Gradient Power Generators.

Autor: Liu TR; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan., Fung MYT; Department of Chemical Engineering, National Taiwan University, of Science and Technology, Taipei, 10607, Taiwan., Yeh LH; Department of Chemical Engineering, National Taiwan University, of Science and Technology, Taipei, 10607, Taiwan.; Advanced Manufacturing Research Center, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan., Chiang CH; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan., Yang JS; Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan., Kuo PC; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Shiue J; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Chen CC; Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan.; Institute of Atomic and Molecular Science, Academia Sinica, Taipei, 10617, Taiwan., Chen CW; Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan.; Center of Condensed Matter Science, National Taiwan University, Taipei, 10617, Taiwan.; Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Apr; Vol. 20 (16), pp. e2306018. Date of Electronic Publication: 2023 Dec 02.
DOI: 10.1002/smll.202306018
Abstrakt: Atomically thin two-dimensional (2D) materials have emerged as promising candidates for efficient energy harvesting from ionic gradients. However, the exploration of robust 2D atomically thin nanopore membranes, which hold sufficient ionic selectivity and high ion permeability, remains challenging. Here, the single-layer hexagonal boron nitride (hBN) nanopores are demonstrated as various high-performance ion-gradient nanopower harvesters. Benefiting from the ultrathin atomic thickness and large surface charge (also a large Dukhin number), the hBN nanopore can realize fast proton transport while maintaining excellent cation selectivity even in highly acidic environments. Therefore, a single hBN nanopore achieves the pure osmosis-driven proton-gradient power up to ≈3 nW under 1000-fold ionic gradient. In addition, the robustness of hBN membranes in extreme pH conditions allows the ionic gradient power generation from acid-base neutralization. Utilizing 1 m HCl/KOH, the generated power can be promoted to an extraordinarily high level of ≈4.5 nW, over one magnitude higher than all existing ionic gradient power generators. The synergistic effects of ultrathin thickness, large surface charge, and excellent chemical inertness of 2D single-layer hBN render it a promising membrane candidate for harvesting ionic gradient powers, even under extreme pH conditions.
(© 2023 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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