ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yinghu Song,Jialiang Li,Guojun Song,Xiaoru Li
Balancing the mechanical strength and self-healing performance of polyurethane (PU) remains a significant challenge in achieving excellent self-repairing PU materials. In this study, a self-healing waterborne PU elastomer was designed from a bionic concept by incorporating 2′-deoxythymidine (2′-dT) and isophorone diamine (IPDA) into the polymer chain. The loose stacking of IPDA’s irregular cycloaliphatic structure resulted in the irregular arrangement of urethane bonds in the hard domain. The formation of sextuple hydrogen bonds between 2′-dT and urethane bonds, as well as quadruple hydrogen bonds between urethane bonds themselves, enhanced the mechanical properties of the material. The multiple hydrogen bonds can dissociate, recombine, and dissipate energy, thereby improving the material’s repair capability. The hierarchical self-assembly of hydrogen bonds enabled the PU to achieve a tensile strength of 15.3 MPa and toughness of 100.75 MJ/m3. The prepared PU film is highly transparent and has a transmittance of more than 90%. Additionally, it can undergo rapid repair under high temperatures or under trace solvent conditions. When used as a flexible conductive substrate, it quickly restored the conductivity and enhanced the material’s lifespan after surface damage. This environmentally friendly and self-healing waterborne PU elastomer will hold broad application prospects in the field of flexible electronic devices.
研究领域:
材料科学
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高分子化学
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柔性电子学
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DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2023
·
IF 4.3
Longzhu Li,Tian Fang,Anqi Huang,Changhai Liu,Lulu Fu,Yuwei Chen,Yujie Ding,Naotoshi Mitsuzaki,Zhidong Chen
Since the photoelectrochemical properties of hematite are affected by its bulk and surface charge recombination, the introduction of a conductive substrate is a feasible way to improve its properties. In this paper, the Ti 3 C 2 and TiO 2 /Ti 3 C 2 conductive substrates were prepared by electrophoretic depositing multilayered Ti 3 C 2 and TiO 2 /Ti 3 C 2 nanosheet powders onto F-doped SnO 2 glass (FTO), respectively. Then, the TiO 2 /Ti 3 C 2 -hematite and Ti 3 C 2 -hematite photoanodes were obtained by in-situ growth of hematite on Ti 3 C 2 and TiO 2 /Ti 3 C 2 conductive substrates by hydrothermal method. The photoanodes were characterized by scanning electron microscopy (SEM), UV–vis spectroscopy, X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS) and photoelectrical measurements. The photocurrent density of TiO 2 /Ti 3 C 2 -hematite reaches 1.29 mA cm −2 at 1.23 V (vs. RHE), which is 3.7 times than that of the FTO-hematite as 0.35 mA cm −2 . The enhancement of the photocurrent response of TiO 2 /Ti 3 C 2 -hematite is mainly due to the great improvement of the bulk charge separation efficiency and the surface charge injection efficiency. This is attributed to the fact that the layered TiO 2 /Ti 3 C 2 conductive substrate can improve the interface property of FTO/hematite, provide Ti source and a larger specific surface area for the growth of hematite.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2022
·
IF 5.141
Tian Fang,Longzhu Li,Changhai Liu,Naotoshi Mitsuzaki,Zhidong Chen
In this paper, hematite photoanodes were prepared on F-doped SnO 2 glass (FTO), polystyrene microspheres (PS), a three-dimensional conductive substrate prepared from a monolayer PS template (MM-TCS) and a bilayer PS template (B-TCS) by a hydrothermal method, and the effect of the different substrates on the photoelectrocatalytic (PEC) performance of hematite was investigated. At 1.23 V (vs RHE), the hematite photoanode prepared on B-TCS (B-TCS-hematite) has the optimal photocurrent response of 1.16 mA cm −2 , which is 4.6 times that of the hematite photoanode prepared on FTO (FTO-hematite). The improved PEC performance of the B-TCS-hematite sample is mainly due to the thicker and more connected B-TCS layers, the high ratio of (1 0 4)/(1 1 0), the morphology of nanocoral rods with larger gaps and the increased light absorption, which significantly improve the bulk charge separation efficiency and surface charge injection efficiency. In this work, the effects of conductive substrates on the photoelectrocatalytic water of hematite were investigated by scanning electron microscopy (SEM), UV–vis spectroscopy, X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), and photoelectrical measurements.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
Nano-Micro Letters
·
2023
·Vol. 15
·期 1
·1-16
·
IF 26.6
Li Xiangyang,Chen Fangshuai,Zhao Bo,Zhang Shaohua,Zheng Xiaoyu,Wang Ying,Jin Xuting,Dai Chunlong,Wang Jiaqi,Xie Jing,Zhang Zhipan,Zhao Yang
An efficient and general strategy for ultrafast synthesis of seven transition metal layered hydroxides on conductive substrates is proposed, which avoids the use of additional reagents, multiple steps and long production time in the traditional bottom-up method.
The whole synthesis process only takes as fast as approximately 13 s, and its synthesis rate reaches ~ 0.46 cm 2 s −1 .
The NiCo LDH@CC as a demonstration example is selected as cathode material for aqueous alkaline Zn (micro-) battery, which exhibits an outstanding performance.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
PubMed
高影响因子
Nano Research
·
2024
·Vol. 17
·期 6
·5595-5603
·
IF 9.5
Zhou Runhui,Huang Jiaoya,Li Zemin,Wang Yushu,Chen Ziyu,Pan Caofeng
Stretchable hybrid systems have been attracting tremendous attention for their essential role in soft robotics, on-skin electronics, and implantable devices. Both rigid and soft functional modules are typically required in those devices. Consequently, ensuring stable electrical contact between rigid and soft modules is a vital part. Here, we propose a simple, universal, and scalable strategy for the stretchable hybrid system through a highly precise printable liquid metal particle-based conductor and adhesive fluorine rubber substrate. The properties of liquid metal particle-based conductors could be easily tuned to realize high-precision patterning, large-scale printing, and the ability to print on various substrates. Additionally, the fluorine rubber substrate could form strong interfacial adhesion with various components and materials through simply pressing and heating, hence enabling stable electrical contact. Furthermore, we prepared a stretchable hybrid light-emitting diode (LED) display system and employed it in on-skin visualization of pressure levels, which perfectly combined rigid and soft modules, thus demonstrating the promising potential applications in complex multifunctional stretchable hybrid systems for emerging technologies.
研究领域:
材料科学
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柔性电子
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生物医学工程
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Shi-Ming Niu,Xin-Hui Li,Hao-Yang Ding,Wo-Long Wang,Peng-Fei Li,Xia-Chen Zheng,Min-Hua Cui
The application of heterogeneous photocatalysts is severely limited by the high charge transfer resistance (R ct ). BiVO 4 /g-C 3 N 4 photocatalysts were prepared and loaded on the conductive matrix material carbon paper (CP) to reduce electron transfer resistance and improve the photocatalytic performance. The R ct of BiVO 4 /g-C 3 N 4 @CP was remarkedly reduced by 94.3 % compared to the photocatalysts on the oil paper (BiVO 4 /g-C 3 N 4 @OP), while the photocurrent density increased by 5.5 times. The utilization efficiency of light energy and separation of photoelectrons and holes were improved with CP due to its ability to facilitate long-distance transfer of photoelectrons. Consequently, the photocatalytic degradation performance of BiVO 4 /g-C 3 N 4 @CP was enhanced by a 26.1 % improvement in ciprofloxacin (CIP) degradation efficiency. Quenching experiment, LC-MS analysis and DFT calculation revealed that piperazine ring opening and C-F cleavage were the major pathways for CIP degradation with BiVO 4 /g-C 3 N 4 @CP.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2017
·Vol. 164
·期 4
·H215
·
IF 3.259
Xiaohui Song,Jinfeng Wang,Xingna Liu,Menglin Xie,Yongyong Wang,Xiao Dong,Yong Yan,Congxin Xia
CuS nanoplate films were synthesized on FTO conducting glass substrates via a facile microwave-assisted hydrothermal (MHT) route and applied directly as a low-cost and high-efficiency counter electrode (CE) for liquid-junction quantum dot-sensitized solar cells (QDSSC). The two-dimensional structure of nanoplate provide high surface area for more active catalytic sites and easy accessibility for polysulfide electrolyte, which leads to the remarkable decrease in charge transfer resistance and the enhancement of catalytic activity of CE. As a result, the liquid-junction QDSSC assembled with the prepared CuS-2 CE achieves maximum power conversion efficiency (PCE) of 4.97%, which is superior than that of CuS fabricated by conventional chemical bath deposition method based cell (PCE 4.06%) and the 100 nm thin sputtered Pt/FTO CE based cell (PCE 3.08%). Furthermore, the prepared CuS exhibits highly chemical stability in polysulfide electrolyte, resulting in reproducible performance. These results show the potential application of MHT synthetic method in preparing metal chalcogenide CE for high-performance liquid-junction QDSSC in the future.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2014
·
IF 5.03
G.F. Cai,J.P. Tu,D. Zhou,X.L. Wang,C.D. Gu
Vertically aligned hierarchical WO 3 nano-architectures on transparent conducting substrate (3×2.5 cm 2 in size and sheet resistance R s =10 Ω) are produced via a template-free solvothermal method . The nanostructured array films with thicknesses of about 1.1 μm show remarkable enhancement of the electrochromic properties in visible spectrum and infrared region . In particular, a significant optical modulation (66.5% and 66.0% at 633 nm, 73.8% and 53.9% at 2000 nm, 57.7% and 51.7% at 8 μm), fast switching speed (4.6 s/3.6 s and 2.0 s/3.4 s), high coloration efficiency (126 and 120 cm 2 C −1 at 633 nm) and excellent cycling stability (maintained 77.5% and 81.7% of the initial optical modulation after 4500-cycles) are achieved for the nanotree and nanowire arrays, respectively. The improved electrochromic properties are mainly attributed to the vertically aligned structure and the porous space among the nanotrees or nanowires, which make the diffusion of H + in these arrays easier and also supply larger surface area for charge-transfer reactions.
研究领域:
材料科学
·
纳米技术
·
能源与环境
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产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2014
·Vol. 20
·期 7
·1829-1833
·
IF 5.696
Longhua Ding,Wanzhen Li,Qiaohong Wang,Qinqin Sun,Yayun He,Bin Su
Graphical Caught on film : Mesoporous silica films (MSF) with vertically oriented mesochannels on a conductive substrate serve as a hard-template for electrodeposition of polyaniline (PANI; ITO=indium tin oxide; see figure). Such PANI nanostructures are confined in an orderly fashion in silica mesochannels and produce a robust hybrid film. The film displays good electrocatalytic activity toward oxidation of ascorbic acid and can be used for potentiometric pH-sensing. A mesoporous silica film (MSF) with vertically oriented mesochannels on a conductive substrate serves as a hard-template for electrodeposition of polyaniline (PANI). The PANI nanostructures thus prepared are orderly confined in silica mesochannels, eventually producing a robust hybrid film. The film displays a good electrocatalytic activity toward oxidation of ascorbic acid, and can be used for potentiometric pH sensing with a Nernstian response.
研究领域:
材料科学
·
电化学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Hui Gao,Shan Li,Zhengyuan Ding,Yaqiu Zhou,Yi Yao,Mengwei Li,Mengjie Su,Zengqiang Wu,Chunmei Yu
Hydrogen sulfide (H 2 S) serves as the third gaseous signaling molecule in biological systems and is crucial for the regulation of biological cells. However, due to the lack of real time analysis techniques, studies on cellular release of H 2 S may yield inaccurate information and differ significantly from the three-dimensional (3D) cellular in vivo conditions. In this paper, a stretchable conductive 3D scaffold integrated with 3D cell culture, strain loading as well as electrochemical detection was proposed for real time profiling of H 2 S secreted from cells. In our design, single-walled carbon nanotube (CNTs)-impregnated 3D PDMS was used as the conductive substrate scaffold, which was subsequently functionalized with ZIF-8 and gold nanostars (AuNSt). The obtained stretchable AuNSt/ZIF-8/CNTs/PDMS scaffold achieved sensitive electrocatalytic performance toward H 2 S while maintaining excellent mechanical stability. The favorable biocompatibility of the 3D scaffold facilitated the attachment and growth of endothelial cells in culture, enabling in situ inducing and real time tracking of H 2 S secretion during mechanotransduction and pharmacological interventions. This study provided a multifunctional platform for 3D cell culture and to investigate the molecular mechanism related to endothelial dysfunction and vascular disorder.
研究领域:
生物医学工程
·
材料科学
·
生物化学
·
细胞生物学
·
分析化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）