Advanced Membranes最新文献

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IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

IF 9.5

Advanced Membranes

Pub Date : 2025-01-01

引用次数: 0

Robust positively charged polyurea nanofiltration membranes with acid resistance for efficient lithium extraction and recovery 坚固的带正电的聚脲纳滤膜，耐酸性，高效的锂提取和回收

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100134

Qin Shen , Mengmeng Fang , Wenshuo Cui , Chuanjie Fang , Zhikan Yao , Liping Zhu

Given the growing demand for lithium in energy storage and electric vehicle industries, the development of acid-resistant membranes for efficient lithium extraction from brine and recycling of spent lithium-ion batteries is crucial for advancing sustainable and scalable resource recovery technologies. Herein, a strong acid-tolerant and positively charged polyurea (PU) nanofiltration (NF) membrane was fabricated via the interfacial polymerization of toluene-2, 4-diisocyanate (TDI) monomers with poly(allylamine) (PAA) monomers with a polyethersulfone ultrafiltration membrane as the substrate. The newly-developed typical PU NF membrane performed high cation-cation separation selectivity (mixed-salt separation factor: 16.6 for Li⁺/Mg²⁺, 19.3 for Li⁺/Ni²⁺, 11.3 for Li⁺/Co²⁺, and 15.7 for Li⁺/Mn²⁺) even if exposed to 10 wt% H₂SO₄ solution for 96 h. The high cation separation accuracy is attributed to the narrow positively-charged ion sieving channels constructed with TDI and PAA as building blocks. The urea units containing abundant bidentate hydrogen bonds and electron-rich dinitrogen atoms is responsible for the excellent acid tolerance of the PU membranes. This work has the potential to contribute to more sustainable and cost-effective lithium recovery from both brine and discarded cathode materials, making it a crucial step toward scaling up these technologies for industrial applications.

鉴于储能和电动汽车行业对锂的需求不断增长，开发用于从盐水中高效提取锂和回收废旧锂离子电池的耐酸膜对于推进可持续和可扩展的资源回收技术至关重要。本文以聚醚砜超滤膜为底物，通过甲苯- 2,4 -二异氰酸酯（TDI）单体与聚烯丙胺（PAA）单体的界面聚合制备了强耐酸、带正电的聚脲（PU）纳滤膜。新型PU纳滤膜在10 wt% H2SO4溶液中作用96 h，仍具有较高的阳离子-阳离子分离选择性（Li+/Mg2+的混合盐分离因子为16.6，Li+/Ni2+的混合盐分离因子为19.3，Li+/Co2+的混合盐分离因子为11.3，Li+/Mn2+的混合盐分离因子为15.7）。以TDI和PAA为基材构建的带正电的窄离子筛选通道具有较高的阳离子分离精度。尿素单元含有丰富的双齿氢键和富电子二氮原子，是PU膜具有优异耐酸性能的原因。这项工作有可能有助于从盐水和废弃阴极材料中更可持续、更经济地回收锂，使其成为将这些技术扩大到工业应用的关键一步。

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Advanced bipolar membranes with earth-abundant water dissociation catalysts for durable ampere-level water electrolysis 先进的双极膜与地球丰富的水解离催化剂持久安培级水电解

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100152

Fanglin Duan, Xiaojiang Li, Fen Luo, Tingkun Li, Weisheng Yu, Liang Wu, Tongwen Xu

Green hydrogen production via water electrolysis is a crucial pathway for sustainable energy generation. Bipolar membrane water electrolysis (BPMWE) offers several advantages, including kinetically optimal electrode reactions across pH gradients and reduced component costs. However, challenges such as high overpotential of the BPM for water dissociation (WD) and the need for long-term stability in industrial setting hinder BPMWE development. While various metal oxide catalysts have been explored to reduce WD overpotential in BPMs, the effect of different crystalline phases of interfacial catalysts on BPM performance remains poorly understood. In this study, we investigate the catalytic effects of three titanium dioxide (TiO₂) phases—anatase, rutile, and amorphous—as interfacial catalysts in BPMs. The electrochemical tests reveal that rutile TiO₂, with its uniform dispersion and minimal aggregation, offers excellent WD efficiency. The BPM incorporating rutile TiO₂ achieves current densities of 2300 mA cm⁻² in pure water electrolysis and 4500 mA cm⁻² in acid-base electrolysis at 3 V and 80 °C. Furthermore, in a flow-cell electrolyzer, it sustains stable operation for 200 h at 1000 mA cm⁻². This work addresses critical challenges in BPM development, advancing BPMWE technology and supporting the potential for industrial-scale hydrogen production, thereby willing to contribute to the transition to sustainable energy solutions.

水电解绿色制氢是可持续能源生产的重要途径。双极膜电解（BPMWE）具有几个优点，包括跨pH梯度的动力学最佳电极反应和降低组件成本。然而，BPM用于水解离（WD）的高过电位以及工业环境中对长期稳定性的需求等挑战阻碍了BPMWE的发展。虽然已经探索了各种金属氧化物催化剂来降低BPM中的WD过电位，但界面催化剂的不同晶相对BPM性能的影响仍然知之甚少。在这项研究中，我们研究了三种二氧化钛（TiO2）相——锐钛矿、金红石和无定形——作为界面催化剂在bpm中的催化作用。电化学测试表明，金红石型TiO2具有分散均匀、团聚最小的特点，具有优异的WD效率。含金红石型TiO2的BPM在3v和80°C条件下，纯水电解电流密度为2300 mA cm - 2，酸碱电解电流密度为4500 mA cm - 2。此外，在流动电池电解槽中，它可以在1000毫安厘米−2下稳定运行200小时。这项工作解决了BPM开发中的关键挑战，推进了BPMWE技术，并支持了工业规模制氢的潜力，从而愿意为向可持续能源解决方案的过渡做出贡献。

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Cellulose-based separation membranes: A sustainable evolution or fleeting trend? 纤维素基分离膜：可持续发展还是转瞬即逝的趋势？

Advanced Membranes

Pub Date : 2025-01-01 DOI: 10.1016/j.advmem.2025.100153

Fuju Qi , Benkun Qi , Zhaoliang Cui , Xiangrong Chen , Yinhua Wan , Jianquan Luo

Cellulose-based separation membranes are promising for sustainable membrane technology due to their renewable raw materials and biodegradability. Their excellent resistance to fouling, minimal protein adsorption, and high biocompatibility render them effective in bio-separation applications. Nevertheless, the development of truly sustainable cellulose membranes for engineering purposes remains challenging. This review begins by outlining the raw cellulosic materials employed in membrane fabrication, followed by a systematic summary of the fabrication techniques for cellulose-based membranes derived from various raw materials, alongside their progress in bio-separation. The sustainability of cellulose-based separation membranes is assessed within a life cycle framework that considers raw materials, membrane fabrication, application scenarios and end-of life, with particular emphasis on key barriers to achieving engineering sustainability. Finally, this review proposes targeted optimization strategies to tackle these limitations, offering a clear roadmap for future research aimed at transforming cellulose-based membranes from promising laboratory innovations into robust, scalable engineering solutions.

纤维素基分离膜由于其原料的可再生和生物降解性，在可持续膜技术中具有广阔的应用前景。其优异的抗污垢性，最小的蛋白质吸附和高生物相容性使其在生物分离应用中有效。然而，为工程目的开发真正可持续的纤维素膜仍然具有挑战性。本文首先概述了用于膜制造的原始纤维素材料，然后系统地总结了从各种原料中提取的纤维素基膜的制造技术，以及它们在生物分离方面的进展。纤维素基分离膜的可持续性是在一个生命周期框架内评估的，该框架考虑了原材料、膜制造、应用场景和寿命终结，特别强调了实现工程可持续性的关键障碍。最后，本文提出了有针对性的优化策略来解决这些限制，为未来的研究提供了明确的路线图，旨在将纤维素基膜从有前途的实验室创新转化为强大的、可扩展的工程解决方案。

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