JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Mengchen Wu,Yang Yang,Jing Zhao,Rui Liu
In CO 2 electroreduction, mutative intermediates and the challenging C C coupling necessitate the spatial interplay between active sites and through dynamically optimizing configurations. Herein, we anchor ethylenediaminetetraacetic acid (EDTA)-bonded Cu x+ /Bi 3+ pair within UiO-66 for a spontaneous spatial-optimizing CO 2 -to-C 2 H 4 electroreduction. Ab initio molecular dynamic (AIMD) simulation visualizes that such metal pair adaptively interacts with intermediates. Density functional theory (DFT) elicits the componential synergy, in which an upshift d-band of Cu activates CO 2 being protonated into *COOH while Bi site stabilizes oxygenated dimers for deep hydrogenation. The dynamic feature of such pair affords large freedom for sorption and migration of various intermediates, which consequently bestows UiO-66-EDTA/CuBi a maximal FE C 2 H 4 of 47 % and a total current density over 100 mA cm −2 in the flow cell.
研究领域:
材料科学
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催化化学
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能源转化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
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IF 14.7
Zhang Lei,Chen Lu,Wang Siheng,Wang Shanshan,Wang Dan,Yu Le,Xu Xu,Liu He,Chen Chaoji
Self-powered skin attachable and detachable electronics are under intense development to enable the internet of everything and everyone in new and useful ways. Existing on-demand separation strategies rely on complicated pretreatments and physical properties of the adherends, achieving detachable-on-demand in a facile, rapid, and universal way remains challenging. To overcome this challenge, an ingenious cellulose nanofiber-mediated manifold dynamic synergy strategy is developed to construct a supramolecular hydrogel with both reversible tough adhesion and easy photodetachment. The cellulose nanofiber-reinforced network and the coordination between Fe ions and polymer chains endow the dynamic reconfiguration of supramolecular networks and the adhesion behavior of the hydrogel. This strategy enables the simple and rapid fabrication of strong yet reversible hydrogels with tunable toughness ((Value max -Value min )/Value max of up to 86%), on-demand adhesion energy ((Value max -Value min )/Value max of up to 93%), and stable conductivity up to 12 mS cm −1 . We further extend this strategy to fabricate different cellulose nanofiber/Fe 3+ -based hydrogels from various biomacromolecules and petroleum polymers, and shed light on exploration of fundamental dynamic supramolecular network reconfiguration. Simultaneously, we prepare an adhesive-detachable triboelectric nanogenerator as a human-machine interface for a self-powered wireless monitoring system based on this strategy, which can acquire the real-time, self-powered monitoring, and wireless whole-body movement signal, opening up possibilities for diversifying potential applications in electronic skins and intelligent devices.
研究领域:
材料科学
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生物医学工程
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智能设备
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产品关联
DOI
PubMed
高影响因子
MACROMOLECULES
·
2025
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IF 5.2
Aofei Zhang,Xiaoyu Du,Jianglong Li,Jianlong Wen,Lang Shuai,Yongqiang Ming,Yijing Nie
How to effectively improve the strength and toughness of polymer elastomers is important for the expansion of their application fields. Construction of two distinct types of dynamic reversible bonds within elastomers represents an effective strategy for enhancing their mechanical properties. However, the interplay mechanisms between different dynamic reversible bonds have not been fully studied. Herein, we constructed both a hydrogen bond network and a metal coordination network in polyurethane (PU) elastomers. The introduction of both weak hydrogen bonds and strong metal coordination bonds can endow the elastomers with high tensile strength without the sacrifice of stretchability. This special phenomenon can be attributed to the dynamic synergistic mechanisms between the hydrogen bond network and coordination bond network. In short, the presence of strong coordination bonds can promote the orientation of local segments, while the recombination of weak hydrogen bonds can cause the relaxation of locally oriented segments.
研究领域:
高分子科学
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材料工程
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物理化学
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机械工程
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产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Zhang Yue,Ming Zechang,Zhou Zijie,Wei Xiaojie,Huang Jingjing,Zhang Yufan,Li Weikang,Zhu Liming,Wang Shuang,Wu Mengjie,Lu Zeren,Zhou Xinran,Xiong Jiaqing
Temperature-adaptive elastic conductive fibers (ECFs) are crucial for seamlessly integrating electronic textiles, promoting the development of wearables, soft robotics, and high/low-temperature electronics. Realizing ECFs with balanced elasticity, conductivity, and temperature adaptivity remains challenging due to the difficulty of coupling the mechano-electrical-thermal properties at a microscale fiber. We design a wet-spun ECF consisting of thermoplastic polyurethane (TPU), silver flakes (AgFKs) and liquid metal microspheres (LMMSs) with regularly arranged filler architecture, revealing a cold/thermal stretching activated tricomponent-dynamic-coordination mechanism for autonomously-enhanced electrical conductivity (from ~1070 S cm −1 at 25 °C to 1160 S cm −1 at −30 °C and 3020 S cm −1 at 180 °C) and improved electrical stability to sustain 1000 stretching cycles (60% strain at 80 °C). The fiber exhibits scalability and favorable knittability, demonstrating e-textiles such as biomedical electrodes, high/low-temperature near-field communication gloves, and intelligent firefighting suits. The autonomous mechano-thermo-electrical coupling strategy can inspire high-performance and environment-adaptive ECFs for extreme applications.
研究领域:
材料科学
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纳米技术
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柔性电子学
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智能纺织品
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软体机器人
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可穿戴设备
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极端环境电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）