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202 results on '"Qian, Yongchao"'

18. Single Idiosyncratic Ionic Generator Working in Iso‐Osmotic Solutions Via Ligand Confined Assembled in Gaps Between Nanosheets.

Author

Liu, Bi‐Ying, Zhang, Yu‐Hui, Qian, Yongchao, Quan, Di, Jia, Mei‐Juan, Jin, Xiao‐Yan, Zhou, Min, Kong, Xiang‐Yu, and Jiang, Lei

Subjects
OSMOTIC pressure, ENERGY conversion, MOLECULAR dynamics, NANOSTRUCTURED materials, POTASSIUM channels, BIOMEDICAL materials, POWER density, SODIUM channels
Abstract

Numerous reported bioinspired osmotic energy conversion systems employing cation‐/anion‐selective membranes and solutions with different salinity are actually far from the biological counterpart. The iso‐osmotic power generator with the specific ionic permselective channels (e.g. K+ or Na+ channels) which just allow specific ions to get across and iso‐osmotic solutions still remain challenges. Inspired by nature, we report a bioinspired K+‐channel by employing a K+ selective ligand, 1,1,1‐tris{[(2′‐benzylaminoformyl)phenoxy]methyl}ethane (BMP) and graphene oxide membrane. Specifically, the K+ and Na+ selectivity of the prepared system could reach up to ≈17.8, and the molecular dynamics simulation revealed that the excellent permselectivity of K+ mainly stemmed from the formed suitable channel size. Thus, we assembled the K+‐selective iso‐osmotic power generator (KSIPG) with the power density up to ≈15.1 mW/m2 between equal concentration solutions, which is higher than traditional charge‐selective osmotic power generator (CSOPG). The proposed strategy has well shown the realizable approach to construct single‐ion selective channels‐based highly efficient iso‐osmotic energy conversion systems and would surely inspire new applications in other fields, including self‐powered systems and medical materials, etc. [ABSTRACT FROM AUTHOR]

Published
2024
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23. Photothermal‐Enhanced Uranium Extraction from Seawater: A Biomass Solar Thermal Collector with 3D Ion‐Transport Networks

Author

Li, Tingyang, primary, Lin, Xiangbin, additional, Zhang, Zhehua, additional, Yang, Linsen, additional, Qian, Yongchao, additional, Fu, Lin, additional, Zhou, Shengyang, additional, Chen, Weipeng, additional, Wang, Qingchen, additional, Li, Xin, additional, Kong, Xiang‐Yu, additional, Xiao, Hongyan, additional, Jiang, Lei, additional, and Wen, Liping, additional

Published
2023
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27. Construction of a hierarchical membrane with angstrom-scale ion channels for enhanced Li+/Mg2+ separation.

Author

Fu, Lin, Wang, Qingchen, Hu, Yuhao, Qian, Yongchao, Xin, Weiwen, Zhou, Shengyang, Kong, Xiang-Yu, and Wen, Liping

Subjects
SALT, ION channels, MAGNESIUM ions, SIEVES
Abstract

A biomimetic hierarchical membrane consisting of ZIF-8 and MXene with controllable morphology could be fabricated by the facile electrochemical deposition method, well-realizing Li+/Mg2+ sieving. This membrane could work stably in real brine with perm-selectivity of Li+/Mg2+ up to 47.4. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Efficient Solar‐osmotic Power Generation from Bioinspired Anti‐fouling 2D WS2 Composite Membranes.

Author

Wang, Qingchen, Wu, Yadong, Zhu, Congcong, Hu, Yuhao, Fu, Lin, Qian, Yongchao, Zhang, Zhe‐Hua, Li, Tingyang, Li, Xin, Kong, Xiang‐Yu, Jiang, Lei, Zhang, Zhen, and Wen, Liping

Subjects
COMPOSITE membranes (Chemistry), ELECTRODIALYSIS, PHOTOTHERMAL effect, ENERGY harvesting, SOLAR energy
Abstract

Nanofluidic reverse electrodialysis provides an attractive way to harvest osmotic energy. However, most attention was paid to monotonous membrane structure optimization to promote selective ion transport, while the role of external fields and relevant mechanisms are rarely explored. Here, we demonstrate a Kevlar‐toughened tungsten disulfide (WS2) composite membrane with bioinspired serosa‐mimetic structures as an efficient osmotic energy generator coupling light. As a result, the output power could be up to 16.43 W m−2 under irradiation, outperforming traditional two‐dimensional (2D) membranes. Both the experiment and simulation uncover that the generated photothermal and photoelectronic effects could synergistically promote the confined ion transport process. In addition, this membrane also possesses great anti‐fouling properties, endowing its practical application. This work paves new avenues for sustainable power generation by coupling solar energy. [ABSTRACT FROM AUTHOR]

Published
2023
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33. Heterogeneous Electrospinning Nanofiber Membranes with pH‐regulated Ion Gating for Tunable Osmotic Power Harvesting.

Author

Ling, Haoyang, Xin, Weiwen, Qian, Yongchao, He, Xiaofeng, Yang, Linsen, Chen, Weipeng, Wu, Yadong, Du, Huaqing, Liu, Yang, Kong, Xiang‐Yu, Jiang, Lei, and Wen, Liping

Subjects
ENERGY harvesting, OSMOTIC pressure, ELECTROSPINNING, NANOFLUIDIC devices, ION channels, ENERGY conversion
Abstract

Biological ion channels existing in organisms are critical for many biological processes. Inspired by biological ion channels, the heterogeneous electrospinning nanofiber membranes (HENM) with functional ion channels are constructed by electrospinning technology. The HENM successfully realizes ion‐gating effects, which can be used for tunable energy conversions. Introduction of pyridine and carboxylic acid groups into the HENM plays an important role in generating unique and stable ion transport behaviors, in which gates become alternative states of open and close, responding to symmetric/asymmetric pH stimulations. Then we used the HENM to convert osmotic energy into electric energy which reach a maximum value up to 12.34 W m−2 and the output power density of HENM‐based system could be regulated by ion‐gating effects. The properties of the HENM provide widespread potentials in application of smart nanofluidic devices, energy conversion, and water treatment. [ABSTRACT FROM AUTHOR]

Published
2023
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39. Crown Ether‐Based Supramolecular Polymers: From Synthesis to Self‐Assembly.

Author

Duan, Zhaozhao, Xu, Fenfen, Huang, Xiaohui, Qian, Yongchao, Li, Hui, and Tian, Wei

Subjects
SUPRAMOLECULAR polymers, POLYMERIZATION, CROWN ethers, SUPRAMOLECULAR chemistry, ETHER derivatives, CYCLODEXTRINS, CYCLODEXTRIN derivatives
Abstract

Supramolecular polymers not only possess many advantages of traditional polymers, but also have many unique characteristics. Supramolecular polymers can be constructed by self‐assembly of various noncovalent interactions. Host–guest interaction, as one important type of noncovalent interactions, has been widely applied to construct supramolecular polymers. From the perspective of classification of the recognition system motifs, host–guest recognition motifs mainly include crown ether, cyclodextrin, calixarene, cucurbituril, and pillararene‐based host–guest recognition pairs. Crown ethers, as the first‐generation macrocyclic hosts, have played a very important part in the development of supramolecular chemistry. Due to the easy modification of crown ethers, various crown ether derivatives have been prepared by attaching some functional groups to the edges of crown ethers, which endowed them with some interesting properties and made them ideal candidates for the fabrication of supramolecular polymers. This review gives a review of the preparation of crown ether‐based supramolecular polymers (CSPs) and summarizes crown ether‐based recognition pairs, organization methods, topological structures, stimuli‐responsiveness, and functional characteristics. [ABSTRACT FROM AUTHOR]

Published
2022
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44. Biomimetic KcsA channels with ultra-selective K+ transport for monovalent ion sieving.

Author

Xin, Weiwen, Fu, Jingru, Qian, Yongchao, Fu, Lin, Kong, Xiang-Yu, Ben, Teng, Jiang, Lei, and Wen, Liping

Subjects
WATER purification, SIEVES, ACTIVATION energy, ENERGY conversion, ION channels, ELECTROSTATIC interaction, IONS
Abstract

Ultra-selective and fast transport of K+ are of significance for water desalination, energy conversion, and separation processes, but current bottleneck of achieving high-efficiency and exquisite transport is attributed to the competition from ions of similar dimensions and same valence through nanochannel communities. Here, inspired by biological KcsA channels, we report biomimetic charged porous subnanometer cages that enable ultra-selective K+ transport. For nanometer to subnanometer scales, conically structured double-helix columns exhibit typical asymmetric transport behaviors and conduct rapid K+ with a transport rate of 94.4 mmol m−2 h−1, resulting in the K+/Li+ and K+/Na+ selectivity ratios of 363 and 31, respectively. Experiments and simulations indicate that these results stem from the synergistic effects of cation-π and electrostatic interactions, which impose a higher energy barrier for Li+ and Na+ and lead to selective K+ transport. Our findings provide an effective methodology for creating in vitro biomimetic devices with high-performance K+ ion sieving. Materials for the selective transport of K+ have application in a variety of fields including water desalination and separation processes. Here the authors report charged porous subnanometer cages that are inspired in biological KcsA channels; high K+ transport rates and high K+/Li+ and K+/Na+ selectivity ratios are obtained, showing great potential in advanced sieving processes and efficient water treatments. [ABSTRACT FROM AUTHOR]

Published
2022
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48. Improved Ion Transport and High Energy Conversion through Hydrogel Membrane with 3D Interconnected Nanopores

Author

Chen, Weipeng, primary, Wang, Qin, additional, Chen, Jianjun, additional, Zhang, Qianru, additional, Zhao, Xiaolu, additional, Qian, Yongchao, additional, Zhu, Congcong, additional, Yang, Linsen, additional, Zhao, Yuanyuan, additional, Kong, Xiang-Yu, additional, Lu, Benzhuo, additional, Jiang, Lei, additional, and Wen, Liping, additional

Published
2020
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