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Ternary Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4)composite with Z-scheme electron transfer path for enhanced removal broad-spectrum antibiotics by the synergistic effect of adsorption and photocatalysis

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Chinese Journal of Chemical Engineering 2022年第4期35卷 157-168页

作者： Feng Guo Zhihao Chen Xiliu Huang Longwen Cao Xiaofang Cheng weilong Shi Lizhuang Chen School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China College of Chemistry Zhengzhou UniversityZhengzhou 450001China

Constructing the stable,low-cost,efficient,and highly adaptable visible light-driven photocatalyst to implement the synergistic effect of photocatalysis and adsorption has been excavated a promising strategy to deal with antibiotic pollution in water ***,a novel 3 D ternary Z-scheme heterojunction photocatalyst Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4)(Ni_(2)P/BMO/CN)was fabricated by a simple solvothermal method in which the broad spectrum antibiotics(mainly tetracyclines and supplemented by quinolones)were used as target pollution sources to evaluate its adsorption and photocatalytic ***,the Zscheme composite significantly exhibit the enhancement for degradation efficiency of tetracycline and other antibiotic by using Ni_(2)P nanoparticles as electron *** species capture experiment and electron spin resonance(ESR)technology reveal the mechanism of Z-scheme Ni_(2)P/BMO/CN photocatalytic reaction in *** addition,based on the identification of intermediates by liquid chromatography–mass spectroscopy(LC–MS),the possible photocatalytic degradation pathways of TC were proposed.

关键词： Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4) Z-scheme Photocatalysis Adsorption

An efficient VLSI architecture of speeded-up robust feature extraction for high resolution and high frame rate video

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Science China(Information Sciences) 2013年第7期56卷 136-149页

作者： ZHANG weilong LIU LeiBo YIN ShouYi ZHOU RenYan Cai ShanShan WEI ShaoJun Institute of Micro-Electronics and the National Laboratory for Information Science and Technology Tsinghua University

This paper proposes a VLSI architecture of the optimized Speeded-Up Robust Feature (SURF) algorithm. The SURF algorithm which is widely used in computer vision applications, locates interest points (IPoints) and extracts feature descriptors based on the surrounding gradients. In the proposed approach, the SURF algorithm is modified to make it more suitable for hardware implementation with little accuracy lost compared to OpenSURF, an open source software implementation based on OpenCV. The resource cost and throughput gain are balanced. Word Length Reduction (WLR) is adopted to compress the integral image and reduce the occupied memory resources. The orientations and the feature descriptors of the IPoints are calculated in a more efficient way, which significantly reduces memory accesses. Moreover, the operations are pipelined both in and among the proposed hardware modules. This VLSI architecture has been validated on FPGA (Xilinx Virtex-4 XC4VLX80), which is able to detect IPoints and extract SURF feature descriptors in a VGA (640 × 480) 64 fps video input with a 96 MHz working frequency while dissipating 1.278 W. This throughput is more than double of the ones reported in the latest literatures.

关键词： SURF paralleled VLSI architecture interest point feature extraction WLR

Thermal characterisation of dielectric barrier discharge plasma actuation driven by radio frequency voltage at low pressure

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High Voltage 2018年第2期3卷 154-160页

作者： Yang Zhen Song Huimin Wang weilong Jia Min Jin Di Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi'an 710038People's Republic of China

In this study,the thermal characterisation of dielectric barrier discharge plasma actuation driven by radio frequency(RF)voltage waveform at low pressure is *** RF discharge images and voltage-current waveforms are quite different under 3 and 40 *** thermographic method has been proposed for the spatial-temporal temperature field on the actuator *** 3 kPa,the high-temperature region is mainly concentrated on the surface of the high-voltage *** the spanwise direction,the surface temperature gradually increases until it reaches the maximum at the edge of the electrode and then ***,in the chordwise direction,there also exists the maximum value on the surface of the *** discharge starts,the surface temperature rises rapidly,and subsequently,the increasing slope of temperature curves gradually decreases until thermal equilibrium has been reached at about 100 *** effects of the pressure,duty cycle,and operating power on the thermal characterisation are also investigated *** low pressure,the discharge mode is diffuse glow discharge,and the high-temperature region covers the whole *** the pressure increases the surface temperature ascends non-linearly,while the surface temperature is linearly dependent on the duty cycle and operating power.

关键词： character barrier thermal

Simulation and visualization of spraying droplets behavior and deposition within virtual rice canopy

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International Journal of Agricultural and Biological Engineering 2022年第5期15卷 19-27页

作者： weilong Ding Fenglong Zhu Mengjie Jin Lifeng Xu Yuping Zhang College of Computer Science&Technology Zhejiang University of TechnologyHangzhou 310023China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China

Models for accurately simulating pesticide droplet deposition and transmission mechanism in rice canopies can provide an effective and economic tool to optimize methods for spraying pesticides,adjuvant formulation,and spray ***,the current studies on the modeling of spray droplet deposition within rice plants are still very *** at this problem,a method to model and visualize spray transmission and deposition within the canopy of rice plants was ***,a particle system was used to simulate the spraying scene of *** an improved method to determine the behavior of rebound and shatter of the droplets in the virtual scene was *** deposition of spraying droplets on a leaf was calculated according to the inclination angles of the leaf,the characteristics of the leaf surface,and the physical and spatial characteristics of the *** experiment shows that the method can simulate the behavior of the spraying droplets within a virtual scene of a rice plant,which may provide a reference for the study of spray deposition in the canopy of the crop.

关键词： virtual rice plant droplet deposition behavior simulation spray scene

Multifunctional hydrophobic fabric-based strain sensor for human motion detection and personal thermal management

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Journal of Materials Science & Technology 2023年第7期138卷 108-116页

作者： Tianxue Zhu Lexin Liu Jianying Huang Shuhui Li Yonggang Lei weilong Cai Yuekun Lai Huaqiong Li College of Chemical Engineering Fuzhou UniversityFuzhou 350116China Zhejiang Engineering Research Center for Tissue Repair Materials Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhou 325000China Department of Chemistry University College LondonLondon WC1E 6BTUK Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)Wenzhou 325000China

Multifunctional flexible devices for human motion detection and thermal management raised great at-tention as the problem of the aging population is becoming more and more ***,it is still a challenge to endow the devices with excellent stability and wide application *** we prepared a hydrophobic and conductive fabric-based strain sensor for smart fabric via successively coating with poly-dopamine(PDA),polyaniline(PANI),polypyrrole(PPy),and polydimethylsiloxane(PDMS)through in-situ polymerization and dip-coating,which could be used for strain sensor and wearable heater both in air and *** obtained sample exhibited a fast electrical response in 500 ms and could withstand 10,000 times stretching-releasing cycles,additionally,the sample exhibited satisfactory electro-thermal and photo-thermal *** a whole,the multifunctional fabric-based devices with excellent performances show great potential to be applied in medical monitoring and personal care,especially for aged and disabled persons.

关键词： Strain sensor Superhydrophobic Thermal management Photo-thermal device

Electrospun Nanocomposite Fibrous Membranes for Sustainable Face Mask Based on Triboelectric Nanogenerator with High air Filtration Efficiency

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Advanced Fiber Materials 2023年第4期5卷 1505-1518页

作者： Yue Yang Yuchen Yang Jianying Huang Shuhui Li Zheyi Meng weilong Cai Yuekun Lai College of Chemical Engineering Fuzhou University350116 FuzhouPeople’s Republic of China Qingyuan Innovation Laboratory 362801 QuanzhouPeople’s Republic of China Department of Chemistry University College LondonLondon WC1H 0AJUK Wenzhou Institute University of Chinese Academy of ScienceZhejiang 325000 WenzhouPeople’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University201620 ShanghaiPeople’s Republic of China

air pollution caused by the rapid development of industry has always been a great issue to the environment and human being’s ***,the efficient and persistent filtration to PM_(0.3) remains a great ***,a self-powered filter with micro-nano composite structure composed of polybutanediol succinate(PBS)nanofiber membrane and polyacrylonitrile(PAN)nanofiber/polystyrene(PS)microfiber hybrid mats was prepared by *** balance between pressure drop and filtration efficiency was achieved through the combination of PAN and *** addition,an arched TENG structure was created using the PAN nanofiber/PS microfiber composite mat and PBS fiber *** by respiration,the two fiber membranes with large difference in electronegativity achieved contact friction charging *** open-circuit voltage of the triboelectric nanogenerator(TENG)can reach to about 8 V,and thus the high filtration efficiency for particles was achieved by the electrostatic *** contact charging,the filtration efficiency of the fiber membrane for PM_(0.3) can reach more than 98%in harsh environments with a PM_(2.5) mass concentration of 23,000µg/m^(3),and the pressure drop is about 50 Pa,which doesn’t affect people’s normal ***,the TENG can realize self-powered supply by continuously contacting and separating the fiber membrane driven by respiration,which can ensure the long-term stability of filtration *** filter mask can maintain a high filtration efficiency(99.4%)of PM_(0.3) for 48 consecutive hours in daily environments.

关键词： Electrospinning Self-powered filter structure Triboelectric nanogenerator air filtration

Advances in particulate matter filtration:Materials,performance,and application

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Green Energy & Environment 2023年第3期8卷 673-697页

作者： Xuzheng Ji Jianying Huang Lin Teng Shuhui Li Xiao Li weilong Cai Zhong Chen Yuekun Lai College of Chemical Engineering Fuzhou UniversityFuzhou350116China b Qingyuan Innovation Laboratory Quanzhou362801China Department of Chemistry University College LondonLondonWC1H 0AJUK School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore

air-borne pollutants in particulate matter(PM)form,produced either physically during industrial processes or certain biological routes,have posed a great threat to human *** during the current COVID-19 pandemic,effective filtration of the virus is an urgent matter *** this review,we first introduce some fundamentals about PM,including its source and classification,filtration mechanisms,and evaluation *** filtration materials and their functions are then summarized,among which polymers and MOFs are discussed in detail together with their antibacterial *** discussion on the application is divided into end-of-pipe treatment and source ***,we conclude this review with our prospective view on future research in this area.

关键词： air filtration PM capture End-of-pipe treatment Source control COVID-19

Improvement of synergistic effect photocatalytic/peroxymonosulfate activation for degradation of amoxicillin using carbon dots anchored on rod-like CoFe_(2)O_(4)

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Chinese Journal of Chemical Engineering 2022年第12期52卷 136-145页

作者： weilong Shi Yanan Liu Wei Sun Yuanzhi Hong Xiangyu Li Xue Lin Feng Guo Junyou Shi School of Material Science and Engineering Beihua UniversityJilin 132013China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China College of Chemistry Zhengzhou UniversityZhengzhou 450001China

β-lactam antibiotics in aquatic environment have severely damaged ecological stability and caused a series of environmental pollution problems to be solved ***,a novel composite photocatalyst prepared by loading carbon dots(CDs)onto rod-like CoFe_(2)O_(4)(CFO),which can effectively degrade amoxicillin(AMX)by photocata lytic/peroxy mono sulfate(PMS)activation under visible light *** degradation results exhibits that the optimal degradation efficiency with 97.5%within 80 min is achievd by the CDs-CFO-5 *** enhanced activity is ascribed to the introduction of CDs that effectively improves the separation efficiency of photogenerated electron pairs and creates new active sites as electron bridges that improve the photocata lytic *** importantly,a strong synergistic between CDs and photo-induced electrons generated from CFO can further activiate PMS to provide more SO4-·and·OH radicals for boosting the degradation ability towards *** present study aims to elucidate positive role of CDs in photocata lytic/peroxy monosulfate activation during the degradation reaction.

关键词： Carbon dots(CDs) CoFe_(2)O_(4)(CFO) Peroxymonosulfate(PMS) Photocatalytic Amoxicillin(AMX)

One-pot synthesis of the highly efficient bifunctional Ni-SAPO-11 catalyst

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Journal of Materials Science & Technology 2021年第17期76卷 86-94页

作者： Yuchao Lyu weilong Zhan Zhumo Yu Xinmei Liu Ye Yang Xiaoxing Wang Chunshan Song Zifeng Yan State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdao 266580China EMS Energy Institute Pennsylvania State UniversityUniversity ParkPA16802USA

Hydro isomerization of linear alkanes to branched isomers is an important petrochemical process for production of gasoline with high octane ***-noble metal bifunctional catalysts used in this process always suffer from low metal dispersion and poor metal-acid ***,a facile one-pot synthesis method was used to simultaneously regulate metal particle sizes and acidity of the Ni-SAPO-11 hydroisomerization *** physicochemical properties are investigated using XANES,EXAFS,TEM/STEM,FT-IR,XPS,UV-vis and NH_*** from the highly dispersed nickel nanoparticles with an average diameter of 8 nm,the framework Ni~(2+)ions are generated via substituting framework Al~(3+)ions of the *** formed NiP-OH structures have lower deprotonation energy(DPE)than the SiAl-OH ones,contributing more and stronger acid sites to the Ni-SAPO-11 *** great metal-acid synergy including high metal to acid sites ratio(n_(Ni)/n_A)and close intimacy is obtained for the Ni-SAPO-11 *** Ni-SAPO-11 catalyst outperforms the counterpart prepared by the impregnation method and exhibits comparable activity and isomers selectivity to the Pt/SAPO-11 catalyst in the n-hexane hydroisomerization.

关键词： One-pot synthesis Nickel SAPO-11 Hydroisomerization Metal-acid synergy