Advanced Fiber Materials
·
2024
·Vol. 6
·期 4
·1108-1121
·
IF 17.2
Lu Tuo,Xu Nengneng,Guo Liyuan,Zhou Benji,Dai Lingyu,Yang Woochul,Liu Guicheng,Lee Joong Kee,Qiao Jinli
Rechargeable Zn–air batteries (ZABs) have received extensive attention, while their real applications are highly restricted by the slow kinetics of the oxygen reduction and oxygen evolution reactions (ORR/OER). Herein, we report a “bridge” structured flexible self-supporting bifunctional oxygen electrode (CNT@Co-CNF F50-900 ) with strong active and stable Co-N/C@pyridine N/C@CNTs reaction centers. Benefiting from the electron distribution optimization and the advantages of hierarchical catalytic design, the CNT@Co-CNF F50-900 electrode had superior ORR/OER activity with a small potential gap (ΔE) of 0.74 V. Reinforced by highly graphitized carbon and the “π–π” bond, the free-standing CNT@Co-CNF F50-900 electrode exhibited outstanding catalytic stability with only 36 mV attenuation. Impressively, the CNT@Co-CNF F50-900 -based liquid ZAB showed a high power density of 371 mW cm −2 , a high energy density of 894 Wh kg −1 , and a long cycling life of over 130 h. The assembled quasi-solid-state ZAB also demonstrated a high power density, attaining 81 mW cm −2 , with excellent charge–discharge durability beyond 100 h and extremely high flexibility under the multi-angle application. This study provides an effective electrospinning solution for integrating high-efficiency electrocatalysts and electrodes for energy storage and conversion devices. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jingxuan Zhao,Hongxu Liu,Yuchao Qi,Ruijia Wang,Ziwei Lv,Yang Yu,Shulin Sun,Yiming Wang
In this work CS-SDAEM polymer brushes with long-chain structure were synthesized, and TiO 2 /CS-SDAEM nanoparticles were prepared by modifying them on the TiO 2 surface. The prepared modified membrane can effectively degrade dyes through photocatalysis and can reduce the contamination rate of the membrane during use. The separation membrane achieves efficient removal of contamination by self-cleaning. The results of the membrane surface analysis test show that the formation of coordination bonds between o-benzenetriol of GA and TiO 2 , and the chemical reaction between CS and GA, which promote the stability between coating components. The results of filtering tests show that with the excellent anti-fouling performance of long-chain polymer brush, the photodegradability of TiO 2 and a large number of hydrophilic groups contained in GA and CS, PVDF- TiO 2 /CS-SDAEM membranes overcome the above shortcomings and achieve super-hydrophilicity, anti-fouling and self-cleaning. In addition, DFT model simulations of photocatalytic processes show that there is a charge transfer between CS and TiO 2 , which increases the width of the high light absorption band and improves the efficiency of photodegradation. Modified membranes achieve efficient self-cleaning processes and low flux decline rates, which hold great promise for use in real wastewater application scenarios.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Chengsen Li,Yuqing Dong,Xiaomin Yuan,Ye Zhang,Zhijie Qiu,Xueping Gao,Bo Zhu,Kun Qiao
The silane/maleimide co -modified waterborne polyurethane (WPU-M-S) sizing agent and furan-functionalized carbon nanotubes (CNTs-FA) were prepared through chemical modification method. The continuous grafting of carbon nanotubes (CNTs) was realized on the carbon fiber surface by multiple continuous surface treatments, including electrochemical anodizing (EAO), sizing, and chemical grafting of CNTs. The stable physical and chemical connection between carbon fiber, sizing agent, and resin was constructed through the preparation of CNTs/SCF reinforcement. The results of different surface treatment processes such as ultrasound and CNTs grafting process were contrastively studied in terms of surface morphology , microstructure, and mechanical properties. It is reflected that carbon fiber grafted with CNTs-FA (CNTs/SCF) that were prepared by ultrasound assisted chemical grafting provide optimal wettability and interfacial performance. The interfacial shear strength (IFSS) and interlaminar shear strength (ILSS) of CNTs/SCF reinforced epoxy resin composites are 115.37 % and 93.91 % higher than those of the untreated carbon fiber (UCF), respectively. The synergistic improvement mechanism of reinforcement on carbon fiber reinforced epoxy resin composites interfacial properties was proposed. This research provides a multiple continuous surface treatment technology that matches the industrial production of carbon fiber to prepare CNTs/SCF reinforcement.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Hailong Gong,Xiaofeng Hou,Binrong Li,Siyu Shen,Chen Wang,Qinqin Ma,Tingting Liu,Xuedong Wang
The level of total antioxidant capacity (TAC) reflects the overall ability of food to resist oxidative damage, maintain quality and nutritional stability. In this work, we pioneered a Co Ni alloy-confined N-doped carbon nanozyme (CoNi@CNT-N/GO) with a self-cascade catalysis. Compared to other nanozymes, the synergistic effect of OXD and POD realized self-sustained generation of H 2 O 2 , eliminating the need of exogenous addition, and further decomposition of H 2 O 2 into ·OH and oxidizes colorless 3,3′,5,5′- tetramethylbenzidine (TMB) to blue oxTMB as an efficient catalyst. The integration of multiple components and the built-in unique mechanism enhance bienzymatic activity. A “Thing Identify” APP was utilized to construct a smartphone-based visualization platform, demonstrating satisfactory linearity (0.01–1.2 mM) and low detection limit (3.3 μM) in TAC detection of real-world foods. This platform yielded data comparable to those from commercially colorimetric kits. Overall, it proposes a novel idea for engineering multi-functional and non-additional H 2 O 2 nanozymes in on-site food-quality monitoring.
✓ 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）