https://scholars.lib.ntu.edu.tw/handle/123456789/637909
標題: | Single-Layer Hexagonal Boron Nitride Nanopores as High-Performance Ionic Gradient Power Generators | 作者: | Liu, Ting Ran Fung, Man Yui Thomas Yeh, Li Hsien Chiang, Chun Hao Yang, Jhih Sian Kuo, Pai Chia Shiue, Jessie Chen, Chia Chun CHUN-WEI CHEN |
關鍵字: | 2D materials | ion transport | osmotic power | proton gradient power | singe-layer nanopore | 公開日期: | 1-一月-2023 | 來源出版物: | Small | 摘要: | 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. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/637909 | ISSN: | 16136810 | DOI: | 10.1002/smll.202306018 |
顯示於: | 材料科學與工程學系 |
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