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A novel structure of quasi-monolayered NiCo-bimetal-phosphide for superior electrochemical performance

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Journal of Energy Chemistry 2022年第11期31卷 203-211,I0007页

作者： Long Zhao Ming Wen Yakun Tian Qingsheng Wu yongqing fu School of Chemical Science and Engineering Shanghai Key Laboratory of Chemical Assessment and SustainabilityState Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai 200092China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon TyneNE18STUnited Kingdom

Bimetallic transition metal phosphides(TMPs)as potential candidates for superior electrochemical performance are still facing great challenges in the controllable preparation of two-dimensional(2 D)structures with high aspect ***,a novel structure of quasi-monolayered NiCo-bimetal-phosphide(NiCoP)has been designed and successfully synthesized by the newly developed process combined with ultrasonic-cavitation and *** is the first time to break through the controllable preparation of 2 D bimetal-phosphides with a thickness of 0.98 nm in *** on the advantages of 2 D quasi-monolayer structure with dense crystalline-amorphous interface and the reconfigured electronic structure between Ni^(δ+)/Co^(δ+)and P^(δ-),the optimized Ni_(5%)CoP exhibits an outstanding bifunctional performance for electrocatalyzing both hydrogen evolution reaction and oxygen evolution reaction in an alkaline ***_(5%)CoP presents lower overpotentials and voltage of 84 mV&259 mV and1.48 V at the current density of 10 mA cm^(-2)for HER&DER and overall water splitting,respectively,which are superior to most other reported 2 D *** work provides a new strategy to optimize the performance of electrolytic water for bimetal-phosphates and it may be of significant value in extending the design of other ultrathin 2 D structured catalysts.

关键词： 2D quasi-monolayer Hydrogen evolution reaction Bimetal phosphide Oxygen evolution reaction Ultrasonic-cavitation

Achieving consistency of flexible surface acoustic wave sensors with artificial intelligence

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Microsystems & Nanoengineering 2024年第4期10卷 249-260页

作者： Zhangbin Ji Jian Zhou Yihao Guo Yanhong Xia Ahmed Abkar Dongfang Liang yongqing fu College of Mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China Department of Engineering University of CambridgeTrumpington StreetCambridge CB21PZUK Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUK

Flexible surface acoustic wave technology has garnered significant attention for wearable electronics and sensing ***,the mechanical strains induced by random deformation of these flexible SAWs during sensing often significantly alter the specific sensing signals,causing critical issues such as inconsistency of the sensing results on a curved/flexible *** address this challenge,we first developed high-performance AlScN piezoelectric filmbased flexible SAW sensors,investigated their response characteristics both theoretically and experimentally under various bending strains and UV illumination conditions,and achieved a high UV sensitivity of 1.71 KHz/(mW/cm^(2)).To ensure reliable and consistent UV detection and eliminate the interference of bending strain on SAW sensors,we proposed using key features within the response signals of a single flexible SAW device to establish a regression model based on machine learning algorithms for precise UV detection under dynamic strain disturbances,successfully decoupling the interference of bending strain from target UV *** results indicate that under strain interferences from 0 to 1160μεthe model based on the extreme gradient boosting algorithm exhibits optimal UV prediction *** a demonstration for practical applications,flexible SAW sensors were adhered to four different locations on spacecraft model surfaces,including flat and three curved surfaces with radii of curvature of 14.5,11.5,and 5.8 *** flexible SAW sensors demonstrated high reliability and consistency in terms of UV sensing performance under random bending conditions,with results consistent with those on a flat surface.

关键词： artificial boosting consistency

Hollow nanostructure of sea-sponge-C/SiC@SiC/C for stable Li^(+)-storage capability

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Science Bulletin 2019年第16期64卷 1152-1157页

作者： Weina Li Jiaqi Li Jiahao Wen Ming Wen Shipei Chen Qingsheng Wu yongqing fu School of Chemical Science and Engineering Shanghai Key Laboratory of Chemical Assessment and SustainabilityTongji UniversityShanghai 200092China School of Electrical Engineering Chongqing UniversityChongqing 400044China Faculty of Engineering and Environment Northumbria UniversityNE1 8STUK

For the purpose of stable performance in energy storage systems, a new hollow nanostructure of seasponge-C/SiC@SiC/C(SCS/SiC@SiC/C) has been successfully fabricated by the SCS/SiC nanospheres coated with SiC/C shells through an in situ reduction process. Based on SCSs and the carbon shells, the stable hollow structures of SCS/SiC@SiC/C can contain large proportion of active SiC layers, which are adhered to both SCSs and the inner surfaces of carbon shells. Such nanostructured anode enables an excellent cycling stability with a capacity of 612 mAh/g at a current density of 0.5 A/g after 1,800 cycles, achieving an excellent stable Li^+-storage capability.

关键词： SiC Lithium ion batteries Cycling stability Sea-sponge-C/SiC@SiC/C

Reduction of ice adhesion on nanostructured and nanoscale slippery surfaces

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Nanotechnology and Precision Engineering 2023年第1期6卷 56-62页

作者： Luke Haworth Deyu Yang Prashant Agrawal Hamdi Torun Xianghui Hou Glen McHale yongqing fu Faculty of Engineering and Environment University of NorthumbriaNewcastle upon Tyne NE18STUnited Kingdom State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Fiber Reinforced Light Composite MaterialsNorthwestern Polytechnical UniversityXi’an 710072China Institute for Multiscale Thermofluids School of EngineeringUniversity of EdinburghKing’s BuildingsEdinburgh EH93FBUnited Kingdom

Ice nucleation and accretion on structural surfaces are sources of major safety and operational concerns in many industries including aviation and renewable *** methods for tackling these are active ones such as heating,ultrasound,and chemicals or passive ones such as surface *** this study,we explored the ice adhesion properties of slippery coated substrates by measuring the shear forces required to remove a glaze ice block on the coated *** the studied nanostructured and nanoscale surfaces[i.e.,a superhydrophobic coating,a fluoropolymer coating,and a polydimethylsiloxane(PDMS)chain coating],the slippery omniphobic covalently attached liquid(SOCAL)surface with its flexible polymer brushes and liquid-like structure significantly reduced the ice adhesion on both glass and silicon *** studies of the SOCAL coating on roughened substrates also demonstrated its low ice *** reduction in ice adhesion is attributed to the flexible nature of the brush-like structures of PDMS chains,allowing ice to detach easily.

关键词： Hydrophobic Superhydrophobic Polymer surface Ice adhesion Wettability SOCAL

Trifunctional Cu-Mesh/Cu_(2)O@FeO Nanoarrays for Highly Efficient Degradation of Antibiotic, Inactivation of Antibiotic-Resistant Bacteria, and Damage of Antibiotics Resistance Genes

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Energy & Environmental Materials 2023年第1期6卷 349-359页

作者： Long Zhao Wei Zhou Ming Wen Qingsheng Wu Weiying Li yongqing fu Quanjing Zhu Sheng Chen and Jiaqi Ran Shanghai Key Laboratory of Chemical Assessment and Sustainability State Key Laboratory of Pollution Control and Resource ReuseSchool of Chemical Science and EngineeringCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE99UK

Trifunctional Cu-mesh/Cu_(2)O@FeO nanoarrays heterostructure is designed and fabricated by integrating CuCu_(2)O@FeO nanoarrays onto Cu-mesh(CM)via an in situ growth and phase transformation *** is successfully applied to efficiently mitigate the antibiotic pollution,including degradation of antibiotics,inactivation of antibiotic-resistant bacteria(ARB),and damage of antibiotics resistance genes(ARGs).Under visible-light irradiation,CM/CuCu_(2)O@FeO nanoarrays exhibit a superior degradation efficiency on antibiotics(e.g.,up to 99%in 25 min for tetracycline hydrochloride,TC),due to the generated reactive oxygen species(ROS),especially the dominant·O^(2−).It can fully inactivate ***(HB101)with initial number of~108 Cfu mL^(−1) in 10 min,which is mainly attributed to the synergistic effects of 1D nanostructure,dissolved metal ions,and generated ***,it is able to damage ARGs after 180 min of photodegradation,including tetA(vs TC)of 3.3 log 10,aphA(vs kanamycin sulfate,KAN)of 3.4 log 10,and tnpA(vs ampicillin,AMP)of 4.4 log 10,*** work explores a green way for treating antibiotic pollution under visible light.

关键词： antibiotic antibiotic resistance genes antibiotic-resistant bacteria Cu-Mesh/Cu_(2)O@FeO nanoarrays photocatalytic degradation

A new strategy to minimize humidity influences on acoustic wave ultraviolet sensors using ZnO nanowires wrapped with hydrophobic silica nanoparticles

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Microsystems & Nanoengineering 2022年第6期8卷 73-83页

作者： Yihao Guo Jian Zhou Zhangbin Ji Yanghui Liu Rongtao Cao Fengling Zhuo Kaitao Tan Huigao Duan yongqing fu College of Mechanical and Vehicle Engineering Hunan UniversityChangshaChina Faculty of Engineering and Environment Northumbria UniversityNewcastle upon TyneUK

Surface acoustic wave(SAW)technology has been widely developed for ultraviolet(UV)detection due to its advantages of miniaturization,portability,potential to be integrated with microelectronics,and passive/wireless *** enhance UV sensitivity,nanowires(NWs),such as ZnO,are often applied to enhance SAW-based UV detection due to their highly porous and interconnected 3D network structures and good UV ***,ZnO NWs are normally hydrophilic,and thus,changes in environmental parameters such as humidity will significantly influence the detection precision and sensitivity of SAW-based UV *** solve this issue,in this work,we proposed a new strategy using ZnO NWs wrapped with hydrophobic silica nanoparticles as the effective sensing *** of the distribution and chemical bonds of these hydrophobic silica nanoparticles showed that numerous C-F bonds(which are hydrophobic)were found on the surface of the sensitive layer,which effectively blocked the adsorption of water molecules onto the ZnO *** new sensing layer design minimizes the influence of humidity on the ZnO NW-based UV sensor within the relative humidity range of 10–70%.The sensor showed a UV sensitivity of 9.53 ppm(mW/cm^(2))^(−1),with high linearity(R^(2) value of 0.99904),small hysteresis(<1.65%)and good *** work solves the long-term dilemma of ZnO NW-based sensors,which are often sensitive to humidity changes.

关键词： nanowires nanoparticles ultraviolet

Characterization of gradient Ni-Fe/SiC composite coating on mild steel by thermal spraying in combination with laser cladding

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材料保护 2005年第11期38卷 1-5页

作者： Hu Mulin Pan Lin fu yongqing Xie Changsheng Wang Aihua State Key Laboratory of Die ＆ Mould Technology Faculty of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430010 P. R. China Wuhan Research Institute of Materials Protection Wuhan 430030 P. R. China Department of Engineering University of Cambridge CambridgeCB2 1TN UK

Metal matrix composite coating Ni-Fe/SiC was prepared on an iron-based substrate bythermal spraying combined with laser cladding,using SiC particulates as the reinforcing *** micro-structures of the coatings formed at different thermal spraying and laser cladding conditions were character-ized by means of X-ray diffraction and electron probe *** thermal oxidation properties of themixed powders composed of different content of SiC particulates and relevant Ni-based alloy as the balancewere examined using differential scanning *** hardness profile of the thermal sprayed and lasercladding coatings was investigated as *** was found that SiO2particulates were generated and dissolvedand dispersed during the melting and solidification of the laser cladding process,which was ascribed to theoxidation of the dispersed SiC *** micro-hardness depth profile of the target laser claddingcomposite coating was characterized by gradient distribution,which could be related to the gradient distribu-tion of the hard SiC and SiO2particulates in the dendrites and interdendrites of the cladding *** SiCand SiO2particulates contributed to greatly increasing the microhardness and mechanical properties of the ti-tled laser cladding composite coatings.

关键词：复合材料结构表征涂层热喷射钢金属表面防护

Flexible thin-film acoustic wave devices with off-axis bending characteristics for multisensing applications

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Microsystems & Nanoengineering 2021年第6期7卷 151-159页

作者： Zhangbin Ji Jian Zhou Huamao Lin Jianhui Wu Dinghong Zhang Sean Garner Alex Gu Shurong Dong yongqing fu Huigao Duan College of Mechanical and Vehicle Engineering Hunan University410082 ChangshaChina Shanghai IndustrialμTechnology Research Institute(SITRI) 235 Chengbei Rd201800 ShanghaiChina Corning Research&Development Corporation One River Front PlazaNewarkNY 14831USA College of Information Science and Electronic Engineering Zhejiang University310027 HangzhouChina Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUK

Flexible surface acoustic wave(SAW)devices have recently attracted tremendous attention for their widespread application in sensing and ***,for these applications,SAW devices often need to be bent into offaxis deformations between the acoustic wave propagation direction and bending ***,there are few studies on this topic,and the bending mechanisms during off-axis bending deformations have remained unexplored for multisensing ***,we fabricated aluminum nitride(AlN)flexible SAW devices by using high-quality AlN films deposited on flexible glass substrates and systematically investigated their complex deformation behaviors.A theoretical model was first developed using coupling wave equations and the boundary condition method to analyze the characteristics of the device with bending and off-axis deformation under elastic *** relationships between the frequency shifts of the SAW device and the bending strain and off-axis angle were obtained,and the results were identical to those from the theoretical ***,we performed proof-of-concept demonstrations of its multisensing potential by monitoring human wrist movements at various off-axis angles and detecting UV light intensities on a curved surface,thus paving the way for the application of versatile flexible electronics.

关键词： bending wave characteristics

Hierarchical Honeycomb-Structured Electret/Triboelectric Nanogenerator for Biomechanical and Morphing Wing Energy Harvesting

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Nano-Micro Letters 2021年第8期13卷 136-151页

作者： Kai Tao Zhensheng Chen Haiping Yi Ruirong Zhang Qiang Shen Jin Wu Lihua Tang Kangqi Fan yongqing fu Jianmin Miao Weizheng Yuan Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace Northwestern Polytechnical UniversityX’ian 710072People’s Republic of China State Key Laboratory of Optoelectronic Materials and Technologies Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Department of Mechanical Engineering University of Auckland20 Symonds StreetAuckland 1010New Zealand School of Mechano-Electronic Engineering Xidian UniversityX’ian 710071People’s Republic of China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUK School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Flexible,compact,lightweight and sustainable power sources are indispensable for modern wearable and personal electronics and small-unmanned aerial vehicles(UAVs).Hierarchical honeycomb has the unique merits of compact mesostructures,excellent energy absorption properties and considerable weight to strength ***,a honeycomb-inspired triboelectric nanogenerator(h-TENG)is proposed for biomechanical and UAV morphing wing energy harvesting based on contact triboelectrification wavy surface of cellular honeycomb *** wavy surface comprises a multilayered thin film structure(combining polyethylene terephthalate,silver nanowires and fluorinated ethylene propylene)fabricated through high-temperature thermoplastic molding and wafer-level bonding *** superior synchronization of large amounts of energy generation units with honeycomb cells,the manufactured h-TENG prototype produces the maximum instantaneous open-circuit voltage,short-circuit current and output power of 1207 V,68.5μA and 12.4 mW,respectively,corresponding to a remarkable peak power density of 0.275 mW cm^(−3)(or 2.48 mW g^(−1))under hand pressing *** to the excellent elastic property of self-rebounding honeycomb structure,the flexible and transparent h-TENG can be easily pressed,bent and integrated into shoes for real-time insole plantar pressure *** lightweight and compact h-TENG is further installed into a morphing wing of small UAVs for efficiently converting the flapping energy of ailerons into electricity for the first *** research demonstrates this new conceptualizing single h-TENG device’s versatility and viability for broad-range real-world application scenarios.

关键词： Honeycomb-inspired structure Morphing wing energy harvesting Electret power generation Triboelectric nanogenerator Self-powered insole pressure mapping