OPTICS AND LASER TECHNOLOGY
·
2024
·
IF 4.6
Kai Li,Long Sun,Fan Du,Chao Wang,Junyang Fang,Mingzhen Li,Yexin Wang,Xiaoying Wang,Jinbang Li
With the rapid advancement of micro/nanoscale devices, there is a growing demand for hierarchical micro/nano porous-structure, particularly in fields of high-performance sensors, electrochemical energy storage, and photocatalysis. The fabrication methods for hierarchical micro/nano-porous structures have been limited by complex processes and high costs, making further development and application difficult. In this paper, a novel strategy of laser-induced in-situ electrohydrodynamic jet (E-Jet) printing of hierarchical micro/nano-porous structures was proposed. Based on the mechanism of high-energy laser beam induction on the jet, it successfully fabricated hierarchical porous ZnO structures from nanoscale to dozens of microns. The jet size focusing and solidification behavior were analyzed by combining experimental and simulative exploration. The resultant effects of the thermal field, flow field, and laser field on the spatial temperature distribution and the jetting morphology were examined. Furthermore, the laser-induced influence on the morphology of the printed micro/nano-porous ZnO structures was explored. Meanwhile, the performance of micro/nano-porous ZnO photoelectric sensors printed by E-Jet under different laser powers was investigated. The laser-induced in-situ E-Jet printing method provided an innovative pattern for the high-resolution additive manufacturing of hierarchical porous structures, demonstrating its potential for applications in advanced material and high-performance devices.
研究领域:
材料科学
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纳米技术
·
光电材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Fuhan Mai,Jianguo Deng,Jialu Chen,Yingchun Lu,Xing Li,Xue Liu,Lanxiang Ji,Xiaofeng Bai
Radiation protection products (RPPs) with safety and comfort are essential for people who are exposed to nuclear radiation. However, achieving a balance between safety and comfort in the existing RPPs is extremely challenging. Here, a waterborne polyurethane (WPU) foam containing CeO2 is proposed to address this challenge. Flower-shaped CeO2 (FCeO2) and spherical CeO2 (SCeO2) are synthesized by adding urea during the hydrothermal reaction. Then, the WPU is foamed with sodium dodecyl sulfate (SDS). Finally, CeO2 and WPU are thoroughly amalgamated to yield the CeO2/WPU foam. Compared with SCeO2, FCeO2 forms a micronano porous structure between FCeO2 and WPU, which improves the thermal insulation. Additionally, experiments and simulations have shown that FCeO2 improves the radiation protection performance. Fortunately, FCeO2/WPU foams also provide antimicrobial properties and are lightweight, along with their benefits of radiation protection and insulation.
研究领域:
辐射防护
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材料科学
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高分子科学
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核工程
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热工学
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2021
·
IF 7.205
Yue Zhao,Xiao-Han Chen,Ji-Ming Hu
A novel and environmental-friendly pretreatment layer was prepared on a mild steel from an aqueous solution of polyvinyl alcohol (PVA)-grafted phytic acid (PA). This composite pretreatment layer provides greatly improved adhesion to the metal substrate, owing to the strong chelation and coordination interaction between PA and metals. Meanwhile, PVA modification produces highly porous structure in the hybrid layer. This is beneficial to the improvement of adhesion between metal substrates and subsequent polymer coatings. Further, the highly porous structure is good at loading -corrosion inhibitors, and the polymeric coatings painted on PVA-PA pretreatment layer pre-encapsulated with inhibitors exhibit satisfactory anticorrosion performance.
研究领域:
材料科学
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腐蚀工程
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表面化学
✓ 已验证
DOI
高影响因子
Energy Technology
·
2020
·Vol. 8
·期 6
·2000189
·
IF 3.404
Zhengwei Yang,Huifeng Wang,Boshi Cheng,Chuang Yue,Gaozhan Liu,Runtian Zheng,Fang Hu,Jie Shu
Micronano porous Mo 2 C@C nanorods (NRs) composite anodes are successfully synthesized using the raw materials of MoO 3 NRs, polyacrylonitrile (PAN) polymer, and inactive sodium chloride (NaCl) microparticles. The abundant and soluble NaCl microparticles act as the sacrificial templates, which increase the surface contact area between the MoO 3 NRs and the PAN polymer, thus promoting the thorough formation of Mo 2 C electrodes during the carbonization process. The optimized Mo 2 C@C-template (MCC-T) NR composite electrodes deliver an enhanced electrochemical performance, which is ascribed to the enlarged surface area, reduced path distance of lithium ions, and structural stability. In addition, the Li-ion storage mechanism and the electrochemical kinetics of Mo 2 C@C NR composite anodes are also systemically and experimentally investigated by ex situ X-ray diffraction (XRD) and cyclic voltammetry (CV) techniques. This synthetic strategy for MCC-T NR composite anodes is helpful to design other nanostructured carbide anodes for high-performance lithium-ion batteries (LIBs).
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）