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SSRN 2024年

作者： Geng, Lei Li, Wenfei Meng, Changyu Lan, Youzhao Zhu, Baozhu Ma, Shihua Wu, Qi School of Physics and Physical Engineering Qufu Normal University Qufu273165 China Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology Department of Chemistry and Food Science Yulin Normal University Yulin537000 China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials Science Zhejiang Normal University Jinhua321004 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China

A novel mid-infrared (MIR) nonlinear optical (NLO) crystal Rb4ZnV5O15Cl (RZVC) has been designed and sythesized by the aliovalent substitution strategy based on the parent structure Rb2(VO)(V2O7). Modification of square pyramidal VO5 units through introduction of chlorine ion and zinc metal caion significantly enhanced the dipole moments in a unit cell from 1.653 D for Rb2(VO)(V2O7) to 6.559 D for RZVC. As a consequence, polycrystalline RZVC exhibits strong SHG responses of 12.5 × KDP @1064 nm and 1.2 × AGS @2 μm. In addition, RZVC shows a deep IR transparency cutoff edge (10 μm), an ultra-high LIDT value (62 × AGS @1064 nm), and congruent melting property. Most importantly, RZVC can achieve full-wavelength phase matching in a very wide MIR transparency range of 1.69‒10 μm, completely covering the important atmospheric window (3‒5 μm) through NLO processes. All the comprehensively excellent properties make crystal RZVC can be a very attractive candidate for practical MIR NLO applications. © 2024, The Authors. All rights reserved.

关键词： Harmonic generation

Growth of AgBr/Ag_(3)PO_(4) Heterojunction on Chitosan Fibers for Degrading Organic Pollutants

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advanced Fiber materials 2020年第5期2卷 246-255页

作者： Si-wei Xiong Yan Yu Pei Wang Man Liu Shao-hua Chen Xian-ze Yin Luo-xin Wang Hua Wang College of Materials Science and Engineering State Key Laboratory of New Textile Materials and Advanced Processing TechnologyWuhan Textile UniversityWuhan 430073People’s Republic of China Sichuan Textile Science Research Institute Chengdu 610072People’s Republic of China

Using Fiber as the based material for photocatalyst particles is favorable for their recovery,thereby avoiding the photocatalyst particles cause secondary pollution to water *** this work,the AgBr and Ag_(3)PO_(4) photocatalyst particles were loaded onto the surface of chitosan fiber(CF)via chelation and in situ anion-exchange *** photocatalytic results illustrated that the AgBr/Ag_(3)PO_(4)/CF composites displayed the best photocatalytic performance when the mass ratio of Ag_(3)PO_(4) and AgBr onto the CF was approximately 1:0.15,their degradation rate can reach 98.1%for the methyl orange(MO)solution,this value far exceeded those of pure CF,AgBr/CF composites,and Ag_(3)PO_(4)/CF ***,the AgBr/Ag_(3)PO_(4)/CF composites also shown excellent durability,after the fifth cycle,they still maintained a decolorization rate of 86.4%for the MO solution,while the Ag_(3)PO_(4)/CF composites maintained a decolorization rate of only 70.7%.Based on these results,we consider that the AgBr/Ag_(3)PO_(4)/CF composites have high practical interest in environmental remediation.

关键词： AgBr Ag_(3)PO_(4) Chitosan fiber Photocatalytic degradation

Tailoring Microstructure and Mechanical Property of Pure Tungsten Via Laser Powder Bed Fusion

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SSRN 2023年

作者： Xiong, Zhengang Ma, Wenyou Deng, Zhaoyang Yu, Chunfeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Institute of New Materials Guangdong Academy of Sciences Guangzhou510650 China

Microstructure tailoring is a fascinating project for material scientists that enables the mechanical properties of metallic parts to be customized. In this study, a series of laser parameter settings were implemented to manufacture dense tungsten parts and three laser travelling strategies were developed to tailor the microstructure via laser powder bed fusion (LPBF). A novel brick-stacking structure and interlocked S-shaped grains were observed in these dense samples. Among different strategy tungsten builds, typical indentation size effect (ISE) was found based on the indentation responses. As-measured indentation hardness could be thought of the sum of contribution from surface and volume. Although their ISE was similar, the contribution from plastically volume work varied, which could be primarily interpreted by rotation strategy. The rotation strategy significantly reduced the grain size and thermal stress during laser manufacturing, resulting in higher true hardness (~ 3.5 GPa). Additionally, the compression properties and associated fracture behavior of tungsten specimens manufactured by the different strategies were also compared. Therefore, these findings show that controlling laser travelling strategy during the LPBF process could be a powerful avenue to tailor the microstructure and performance of the customized components. © 2023, The Authors. All rights reserved.

关键词： Hardness

Microstructure and Ablation Behaviour of C/C-Sic-Zrc-Cu Composites Prepared by Reactive Melt Infiltration

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SSRN 2024年

作者： Wang, Shuai Yin, Jian Xiefeng, Minyu Tang, Lei Xiong, Xiang Zhang, Hongbo Wen, Qingbo Ma, Denghao Tianshan, Jinglv Zuo, Jinglv State Key Laboratory of Powder Metallurgy Central South University Changsha410083 China Aerospace Research Institute of Materials & Processing Technology Key Laboratory of Advanced Functional Composite Materials Technology Beijing100076 China Hunan Boyun New Materials CO.LTD Changsha410083 China

To satisfy the requirements for the new generation solid rocket motors on highly ablation-resistant throat materials, an idea of merging passive and active thermal protection was applied to modify carbon/carbon composites. In this study, SiC and ZrC were used as passive thermal protection materials along with the active thermal protection material Cu to modify the C/C composites. C/C-SiC-ZrC-Cu composites were prepared by two-step reactive melt infiltration, which involved the infiltration of Si/Zr followed by Cu/Ti. The Cu content of the C/C-SiC-ZrC composites was controlled by controlling the open porosity of the porous C/C-SiC-ZrC composites. Microstructure, composition and ablation resistance of the C/C-SiC-ZrC-Cu composites were investigated. The results showed that the composites with high Cu content and density exhibited excellent short-term ablation resistance under the 42kW plasma flame, with a negative linear ablation rate after 20s of ablation. The active heat dissipation of Cu during the ablation process results in a significant reduction of the thermal response temperature on the composite surface. Moreover, the generated Si-Ti-Zr-O layer could form an effective barrier to protect the matrix. © 2024, The Authors. All rights reserved.

关键词： Microstructure

Ag-Decorated Pp Nonwoven for Excellent Catalytic Reduction of 4-Nitrophenol and Antibacterial Study

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SSRN 2023年

作者： Xiao, Shili Cheng, Hongbin Han, Niudong Bai, Zhikui Li, Zhujun Xu, Weilin School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan430200 China Key Laboratory of Eco-textiles Ministry of Education Jiangnan University Wuxi214112 China College of Textiles Guangdong Polytechnic Guangzhou528041 China

Silver particles have been frequently coated on the surface of substrates with the assistance of polydopamine due to their important catalytic and bacterial properties. However, the polydopamine layer was not compact and the resulted particles on the substrates were easy to leak during the application process, especially in the aqueous environment. For mediating this, we coated Ag particles on the surface of polypropylene (PP) nonwoven fabric by codeposition of catechol and polyethyleneimine, with subsequent crosslinking by glutaraldehyde. The formation of Ag particles on PP nonwoven fabric surface was systematically characterized using SEM, EDS and elemental mapping, TEM, FTIR, XRD and TG. Batch experiment showed that Ag@PP nonwoven fabric could effectively degrade the model pollutant 4-nitrophenol in the presence of reduction agent NaBH4 with 100% degradation efficiency. The adsorption isotherm was assessed and displayed that the sorption of 4-nitrophenol on reactive Ag@PP nonwoven fabric followed the Freundlich model. The Ag@PP nonwoven fabric was easy to be recycled and could maintained 100% degradation efficiency after six cycles. The degradation process was monitored using HPLC/MS and the possible degradation mechanism was proposed. In addition, the Ag@PP nonwoven fabric showed excellent antibacterial activity against E. coli. Overall, the material fabricated in this work would be a reusable catalyst for water purification and disinfection. © 2023, The Authors. All rights reserved.

关键词： Efficiency

Two-Dimensional Heterostructure Nifep@Feooh Nanosheets Supported by Nickel Foam as High-Performance Oer Electrocatalyst

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SSRN 2023年

作者： Jiang, Zhigang Wang, Kuikui Chen, Mengtian Hou, Qinglong Wang, Chen Yang, Shuhan Liu, Haizhen Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Qingdao University Qingdao266071 China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Guangxi University Guangxi Nanning530004 China

Constructing heterostructure is an efficient strategy to develop high-performance electrocatalysts. Herein, two-dimensional heterostructure NiFeP@FeOOH nanosheets supported by nickel foam are equipped by hydrothermal-phosphorization-electrodeposition processes. The findings indicate that in 1.0 M KOH alkaline solution, NiFeP@FeOOH/NF showed an OER overpotential of 235 mV at 100 mA cm-2, a Tafel slope of 75.85 mV dec-1 and worked stably at 50 mA cm-2 for 80 h. The synthesis of self-supporting heterostructure NiFeP@FeOOH nanosheets on the NF can increase the electron transfer rate, increase the specific surface region, and boost the rate at which produced bubbles are released from the electrode. Additionally, the incorporation of FeOOH into NiFeP nanosheets can provide sufficient active sites for the reaction, favor the form of intermediates containing oxygen (hydroxyl oxides), and promote water splitting. The NiFeP@FeOOH/NF electrocatalytic activity is significantly improved. This research proves the importance of constructing heterostructure and introducing FeOOH are of great significance to the study of the properties of OER electrocatalysts. © 2023, The Authors. All rights reserved.

关键词： Nanosheets

Waste cotton fabric derived porous carbon containing Fe_(3)O_(4)/NiS nanoparticles for electrocatalytic oxygen evolution

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Journal of materials Science & technology 2020年第24期59卷 92-99页

作者： Shan Jiang Hao Shao Genyang Cao Han Li Weilin Xu Jingliang Li Jian Fang Xungai Wang Deakin University Institute for Frontier MaterialsGeelongVIC3216Australia State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan430200China College for Textile and Clothing Engineering Soochow UniversitySuzhouJiangsu215123China

Developing low-cost,active and durable electrocatalysts for oxygen evolution reaction(OER)is an urgent task for the applications such as water splitting and rechargeable metal-air ***,this work reports the fabrication of a metal and hetero atom co-doped fibrous carbon structure derived from cotton textile wastes and its use as an efficient OER *** free-standing fibrous carbon structure,fabricated with a simple two-step carbonization process,has a high specific surface area of 1796 m^2/g and a uniform distribution of Fe_(3)O_(4)/NiS nanoparticles(Fe_(3)O_(4)/NiS@CC).The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 mV at the current density of 10 mA/cm^2in a 1.0 M KOH solution,which even surpass commercial Ru O_(2)***,this ternary catalyst shows remarkable long-term stability without current density loss after continuous operation for 26 *** can be believed that the outstanding OER performance is attributed to the synergistic effect between the iron oxides and nickel sulphides,as well as the micro-meso porous carbon *** study demonstrates a new strategy to use conventional textile materials to prepare highly efficient electrocatalysts;it also provides a simple approach to turn textile waste into valuable products.

关键词： Waste cotton Porous carbon OER electrocatalyst Iron oxides Nickel sulphides

Intrinsic Mechanisms of Morphological Engineering and Carbon Doping for Improved Photocatalysis of 2D/2D Carbon Nitride Van Der Waals Heterojunction

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Energy & Environmental materials 2023年第3期6卷 96-106页

作者： Jinqiang Zhang Xiaoli Zhao Lin Chen Shuli Li Haijun Chen Yuezhao Zhu Shuaijun Wang Yang Liu Huayang Zhang Xiaoguang Duan Mingbo Wu Shaobin Wang Hongqi Sun School of Engineering Edith Cowan University270 Joondalup DriveJoondalupWA 6027Australia College of Chemical Engineering China University of Petroleum(East China) Qingdao 266580China Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology School of Mechanical and Power EngineeringNanjing Tech UniversityNanjing 211816China Center for Integrated Nanostructure Physics Institute for Basic Science(IBS)Sungkyunkwan UniversitySuwon 16419Republic of Korea School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide SA 5005Australia State Key Laboratory of Heavy Oil ProcessingInstitute of New EnergyCollege of Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China

Van der Waals(VDW)heterojunctions in a 2D/2D contact provide the highest area for the separation and transfer of charge *** this work,a top-down strategy with a gas erosion process was employed to fabricate a 2D/2D carbon nitride VDW heterojunction in carbon nitride(g-C_(3)N_(4))with carbon-rich carbon *** created 2D semiconducting channel in the VDW structure exhibits enhanced electric field exposure and radiation absorption,which facilitates the separation of the charge carriers and their ***,compared with bulk g-C_(3)N_(4)and its nanosheets,the photocatalytic performance of the fabricated carbon nitride VDW heterojunction in the water splitting reaction to hydrogen is improved by 8.6 and 3.3 times,respectively,while maintaining satisfactory ***,the finite element method(FEM)was employed to evaluate and clarify the contributions of the formation of VDW heterojunction to enhanced photocatalysis,in agreement quantitatively with experimental *** study provides a new and effective strategy for the modification and more insights to performance improvement on polymeric semiconductors in photocatalysis and energy conversion.

关键词： carbon nitride Van der Waals heterojunctions enhanced electric field exposure improved radiation absorption photocatalytic water splitting promoted dynamics of charge carriers

Ultra-Stretchable, High Conductive Hydrogels Electrolytes for Flexible Solid-state Supercapacitor with High Energy Density

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SSRN 2024年

作者： Bao, Da Zhang, Xin Ji, Xinbin Li, Minghan Guan, Fucheng He, Jiahao Li, Zheng Xu, Yi Zhang, Sen Guo, Jing School of Textile and Materials Engineering Dalian Polytechnic University #1 Qing gong yuan Ganjingzi Liaoning Dalian116034 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China College of Textile and Clothing Hunan Institute of Engineering Xiangtan411104 China State Key Laboratory of Bio-Fibers and Eco-textiles Qingdao University Qingdao266071 China Ministry of 11 Education Wuhan430200 China

The flexibility and safety of energy storage systems are crucial, and hydrogels as one of the most promising candidates for solid-state electrolytes. We present a conductive hydrogel based on sodium alginate that exhibits ultra-stretchable (4200%) and high conductivity (16.3 S m-1). The mechanical properties of the conductive hydrogel are achieved by optimizing the topology of the sodium alginate and harnessing the synergistic effect of non-covalent interaction among different components. And a conductive stucture within hydrogels was successfully established through the synergistic combination of ion and metal nanoparticles. The flexible supercapacitor (FSC) with conductive hydrogel as solid electrolytes demonstrated an area-specific capacitance of up to 274.28 mF cm-2 at a current density of 1 mA cm-2. And the energy density of the FSC is as high as 187 μWh cm-2 at a power density of 1.2 mW cm-2. The voltage range of the FSC is also extended to 1.4V. The FSC also exhibited exceptional flexibility and stability, including insensitivity to bending angles and remarkable cycle durability (82.4% after 10,000 cycles). The study presents a novel design for the development of solid-state electrolytes, with the aim of creating a new generation of FSC that exhibit superior safety and high energy density. © 2024, The Authors. All rights reserved.

关键词： Solid electrolytes

Dragonfly Wings-Inspired, Anti-Freezing, Ultra-Stretchable, and Transparent Nano-Structure Hydrogel for Non-Delayed Wearable Sensing at Low-Temperatures

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SSRN 2024年

作者： Bao, Da Liu, Zhihao Jia, Shangyin Ji, Xinbin He, Jiahao Yang, Qiang Yao, Qiang Guan, Fucheng Zhang, Xin Xu, Yi Zhu, Shu Zhang, Sen Guo, Jing School of Textile and Materials Engineering Dalian Polytechnic University #1 Qing gong yuan Ganjingzi Liaoning Dalian116034 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China College of Textile and Clothing Hunan Institute of Engineering Xiangtan411104 China College of Materials Science and Engineering Donghua University Shanghai201620 China State Key Laboratory of Bio-Fibers and Eco-textiles Qingdao University Qingdao266071 China

Conductive hydrogels, regarded as an optimal flexible electronic material. Nevertheless, the pressing concern of simultaneously achieving excellent mechanical and conductive properties in hydrogels necessitates immediate attention. In the study, the exceptional mechanical properties of hydrogels were achieved by employing a strategy that involves constructing a three-dimensional nano-structure network, inspired by the highly ordered structure observed in dragonfly wings. The conductivity and anti-freezing of the hydrogel were enhanced through the construction of a conductive mechanism, achieved by combining inorganic salts with metal nano-particles. The conductive hydrogel exhibits outstanding properties, including anti-freezing, ultra-stretchable (6000%), extraordinary high toughness (8.32 MJ m-3), low Young's modulus (3.8 kPa), impressive conductivity (16.2 S m-1), a transparency level of up to 91.2% and excellent sensitivity in strain sensor. The regulation of the hydrogel matrix's topology and the formation of bionic nano-structures synergistically establish the ultra-stretching and energy dissipation mechanism of the hydrogel. And the high conductivity of the hydrogel is achieved by constructing a synergistic conduction pathway, which incorporates metal nano-particles and inorganic salts. Under the stretching-induced effect of hydrogel, the conductive structure facilitates a more efficient pathway for conduction, thereby enhancing its conductivity and sensing sensitivity under significant strains. Subsequently, this hydrogel was successfully applied to wearable sensor technology, demonstrating surprisingly remarkably prompt non-delayed sensing performance even at low-temperatures. It approach presents abundant opportunities for expanding the application scope of hydrogels in flexible electronics. © 2024, The Authors. All rights reserved.

关键词： Hydrogels