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Electrocatalytic oxidation of gaseous toluene in an all-solid cell using a foam Ti/Sb-SnO2/β-PbO_(2) anode

Journal of Environmental Sciences 2023年第12期134卷 77-85页

作者： Zhikun Liu Weiming Qian Min Chen Wenshuo Zhou Boying Song Bo Zhang Xiaolei Bao Qiong Tang Yongchun Liu Changbin Zhang Aerosol and Haze Laboratory Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Hebei Technological Innovation Center for Volatile Organic Compounds Detection and Treatment in Chemical Industry Department of quality inspection and managementHebei Chemical and Pharmaceutical CollegeShijiazhuang 050026China College of Energy materials and Chemicals Leshan Normal UniversityLeshan 614000China

Mineralization of benzene,toluene,and xylene (BTX) with high efficiency at room temperature is still a challenge for the purification of indoor *** this work,a foam Ti/Sb-Sn O2/β-Pb O_(2)anode catalyst was prepared for electrocatalytically oxidizing gaseous toluene in an all-solid cell at ambient *** complex Ti/Sb-Sn O_(2)/β-Pb O_(2)anode,which was prepared by sequentially deposing Sb-Sn O_(2)and β-Pb O_(2)on a foam Ti substrate,shows high electrocatalytic oxidation efficiency of toluene (80%) at 7 hr of reaction and high CO_(2)selectivity (94.9%) under an optimized condition,i.e.,a cell voltage of 2.0 V,relative humidity of60%and a flow rate of 100 m L/*** better catalytic performance can be ascribed to the high production rate of·OH radicals from discharging adsorbed water and the inhibition of oxygen evolution on the surface of foam Ti/Sb-Sn O_(2)/β-Pb O_(2)anode when compared with the foam Ti/Sb-Sn O_(2)*** results demonstrate that prepared complex electrodes can be potentially used for electrocatalytic removal of gaseous toluene at room temperature with a good performance.

关键词： Gaseous toluene Electrocatalytic oxidation Lead dioxide Indoor air purification Solid cell

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Tea stain-inspired solar energy harvesting polyphenolic nanocoatings with tunable absorption spectra

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Nano Research 2021年第4期14卷 969-975页

作者： Lu Yang Yuan Zou Wei Xia Haotian Li Xinyu He Yi Zhou Xianhu Liu Chaoqun Zhang Yiwen Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou UniversityZhengzhou 450002China Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural University483 Wushan RoadGuangzhou 510642China Guangdong Laboratory for Lingnan Modem Agricultural Science and Technology 483 Wushan RoadGuangzhou 510642China

Discovery and development of new sustainable photothermal materials with tunable light absorption spectra play a key role in solar energy harvesting and *** possible solution to this quest is to check nature as a source of matters or *** by the formation of tea stains,a unique class of dark stain materials generated by the interfacial reaction between tea polyphenols and metal substance,we reported the facile preparation and screening of a series of photothermal nanocoating layers via the metal ion(i.e.C u(ll)>Fe(lll),Ni(ll),Zn(ll))promoted in situ polymerization of typical phenolic moieties of tea polyphenols(i.e.,catechol and pyrogallol).It was found that those resulting metal-polyphenolic nanocoatings showed various promising features,such as high blackness and strong adhesion,excellent and tunable light absorption properties,good hydrophilicity and long-term *** further fabricated the photothermal composite devices by/n s/'fty formation of meta卜polyphenolic nanocoatings on pristine silks for solar desalination,which demonstrated promising durable evaporation behaviors with excellent evaporation rates and steam generation *** believe that this work could provide more opportunities towards new types of bio-inspired and sustainable photothermal nanomaterials for solar energy harvesting applications such as water desalination.

关键词： metal-polyphenolic nanocoating polymerization light absorption photothermal solar desalination

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Tailoring precipitation/properties and related mechanisms for a high-strength aluminum alloy plate via low-temperature retrogression and re-aging processes

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Journal of Materials Science & technology 2022年第25期120卷 15-35页

作者： L.G.Hou H.Yu Y.W.Wang L.You Z.B.He C.M.Wu D.G.Eskin L.Katgerman L.Z.Zhuang J.S.Zhang State Key Laboratory for Advanced Metals&Materials University of Science&Technology BeijingBeijing 100083China BCAST Brunel University LondonKingston LaneUxbidge Middlesex UB83PHUnited Kingdom Institute of mineral resources Chinese Academy of Geological SciencesBeijing 100037China Nanjing Advanced Transportation Equipment New Technology Research Institute Nanjing 211800China Tomsk State University Tomsk634050Russian Federation Katgerman Aluminium Technology van Beuningenlaan 102334CC LeidenNetherlands Department of Materials Science and Engineering Delft University of TechnologyMekelweg 22628CD Delftthe Netherlands

The retrogression and re-aging(RRA)processes,aimed mainly at tailoring intergranular precipitates,could significantly improve the corrosion resistance(i.e.,stress corrosion cracking resistance)without considerably decreasing the strength,which signifies that an efficient control of the size,distribution and evolution of intergranular and intragranular precipitates becomes critical for the integrated properties of the(mid-)thick high-strength Al alloy *** to RRA process with retrogression at200℃ (T77),this study investigated the impact of a modified RRA process(MT77)with lower retrogression temperatures(155-175℃ )and first-stage under-aging on the properties of a high-strength AA7050 Al alloy,in combination with detailed precipitate *** study showed that the strength/microhardness of the RRA-treated alloys decreased with raising retrogression temperature and/or prolonging retrogression time,along with the increased electrical *** rapid responsiveness of microstructure/property typical of retrogression at 200℃ was obviously postponed or decreased by using MT77 process with longer retrogression time that was more suitable for treating the(mid-)thick *** the other hand,higher retrogression temperature facilitated more intragranularηprecipitates,coarse intergranular precipitates and wide precipitate free zones,which prominently increased the electrical conductivity alongside a considerable strength loss as compared to the MT77-treated *** the preferred MT77 process,the high strength approaching T6 level as well as good corrosion resistance was ***,though a relatively homogeneous through-thickness strength was obtained,some small discrepancies of properties between the central and surface areas of an 86-mm thick 7050 Al alloy plate were observed,possibly related to the quenching *** precipitate evolution and mechanistic connection to the properties were discussed and reviewed for high-strengt

关键词： Aluminum alloy Heat treatment Precipitation Strength Grain boundary

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RobNODDI: Robust NODDI Parameter Estimation with Adaptive Sampling Under Continuous Representation 15th

RobNODDI: Robust NODDI Parameter Estimation with Adaptive S...

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15th International Workshop on Computational Diffusion MRI, CDMRI 2024, held in conjunction with 27th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2024

作者： Xiao, Taohui Cheng, Jian Fan, Wenxin Yang, Jing Li, Cheng Dong, Enqing Wang, Shanshan School of Mechanical Electrical and Information Engineering Shandong University Weihai264209 China State Key Laboratory of Software Development Environment Beihang University Beijing China Key Laboratory of Data Science and Intelligent Computing Institute of International Innovation Beihang University Zhejiang Hangzhou China Paul C. Lauterbur Research Center for Biomedical Imaging Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Guangdong Shenzhen China Peng Cheng Laboratory Guangdong Shenzhen China

ISBN: (纸本)9783031869198

Neurite Orientation Dispersion and Density Imaging (NODDI) is an important imaging technology used to evaluate the microstructure of brain tissue, which is of great significance for the discovery and treatment of various neurological diseases. Current deep learning-based methods perform parameter estimation through diffusion magnetic resonance imaging (dMRI) with a small number of diffusion gradients. These methods speed up parameter estimation and improve accuracy. However, the diffusion directions used by most existing deep learning models during testing needs to be strictly consistent with the diffusion directions during training. This results in poor generalization and robustness of deep learning models in dMRI parameter estimation. In this work, we first verify that the parameter estimation performance of current mainstream methods will significantly decrease when the testing diffusion directions and the training diffusion directions are inconsistent. A robust NODDI parameter estimation method with adaptive sampling under continuous representation (RobNODDI) is proposed. Furthermore, long short-term memory (LSTM) units and fully connected layers are selected to learn continuous representation signals. To this end, we use a total of 100 subjects to conduct experiments based on the Human Connectome Project (HCP) dataset, of which 60 are used for training, 20 are used for validation, and 20 are used for testing. The test results indicate that RobNODDI improves the generalization performance and robustness of the deep learning model, enhancing the stability and flexibility of deep learning NODDI parameter estimatimation applications. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Deep learning

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Significant capacitance enhancement induced by cyclic voltammetry in pine needle-like Ni-Co-Cu multicomponent electrode

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Journal of Materials Science & technology 2021年第19期78卷 100-109页

作者： Liqianyun Xu Liuyang Zhang Bei Cheng Jiaguo Yu Ahmed A.Al-Ghamdi S.Wageh State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou.450001China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia

Poor conductivity and rate capability are the obstacles faced by nickel-cobalt composites as electrode materials for supercapacitor ***,simple electrochemical treatment conducted by cyclic voltammetry is applied and the overall performance of the active material is considerably *** discover that this treatment triggers the formation of Ni-Co-Cu ternary composite and optimizes the crystal structure of the untreated *** areal capacitance of the treated sample rockets up to 6.13 F cm^(-2)at 2 m A cm^(-2),almost 13 times higher than the untreated ***,the resistance is substantially reduced by cyclic voltammetry ***,the Coulombic efficiency and stability are concurrently *** reasons behind this treatment are mulled over and reasonable hypothesis is *** study provides a cheap and effortless way to reform the structures of as-obtained samples as well as vigorously raise the performance of current available materials.

关键词： Cyclic voltammetry Ni-Co-Cu ternary composite Ion exchange Supercapacitor

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Coupling Effect of Precipitate and Hydrogen on Pitting Corrosion of Stainless Steel：Low Potential Region Around Precipitates

SSRN

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SSRN 2024年

作者： Liu, Ming Xu, Lining Qiao, Lijie Yan, Yu Zhang, Binglu Wang, Xuehan State Key Laboratory of Nuclear Power Safety Technology and Equipment University of Science and Technology Beijing Beijing100083 China Institute for Advanced Materials and Technology University of Science and Technology Beijing100083 China Beijing Advanced Innovation Center for Materials Genome Engineering China

The coupling effect of hydrogen and NbCrN precipitate on pitting initiation and propagation of stainless steel were studied. After hydrogen charging, HMT results showed that more hydrogen was enriched on and around the precipitates. According to In-situ SKPFM and immersion results, the Volta potential of the precipitates is higher than that of the matrix before and after hydrogen charging. However, after hydrogen charging, a low Volta potential region appeared around the precipitates. The enrichment of hydrogen around the precipitates, the low potential around the precipitates, and consequent galvanic coupling effect lead to pits preferentially initiating and developing around the precipitates. © 2024, The Authors. All rights reserved.

关键词： Stainless steel

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A Single-Layer Wideband Dual-Polarized Differential-Fed Filtering Antenna Utilizing Shorting Pins Array and SRRs

A Single-Layer Wideband Dual-Polarized Differential-Fed Filt...

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Antennas and Propagation & USNC/URSI National Radio Science Meeting

作者： Junyi Lyu Yulu Hu Shenzhen Institute for Advanced Study UESTC Shenzhen P. R. China National Key Laboratory of Science and Technology on Vacuum Electronics Key Laboratory of Large-Scale Electromagnetic Industrial Software Ministry of Education School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu P. R. China

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

A single-layer wideband dual-polarized differential-fed filtering antenna with low profile and high selectivity is proposed. First, the patch antenna excited differential feed is loaded with shorting pins array to adjust the TM10, TM11 and TM12 modes, such that TM10 and TM11 modes are closely positioned to broaden the impedance bandwidth, while the TM12 mode moves out of the passband, resulting in a radiation null. Second, the patch electromagnetically excites surrounding symmetric Vertical Split-Ring Resonators (VSRRs), yielding an extra resonance mode for wide band and a higher edge radiation null for a sharp roll-off rate. Third, Complimentary Split-Ring Resonators (CSRRs) inscribed around two pairs of differential feeds manifest a tunable lower edge radiation null to increase frequency selectivity. Finally, the proposed filtering antenna exhibits a 21.4% operational bandwidth with a peak gain of 9.7 dBi within the passband, the generation of three radiation nulls was observed, and high selectivity.

关键词： Filtering Resonant frequency Reflector antennas Pins Reflection coefficient Resonators Wideband

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Chemical adsorption on 2D dielectric nanosheets for matrix free nanocomposites with ultrahigh electrical energy storage

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Science Bulletin 2022年第6期67卷 609-618,M0004页

作者： Jie Chen Zhonghui Shen Qi Kang Xiaoshi Qian Shengtao Li Pingkai Jiang Xingyi Huang Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing Department of Polymer Science and EngineeringThe State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'an 710054China

Relaxor ferroelectric polymers display great potential in capacitor dielectric applications because of their excellent flexibility,light weight,and high dielectric ***,their electrical energy storage capacity is limited by their high conduction losses and low dielectric strength,which primarily originates from the impact-ionization-induced electron multiplication,low mechanical modulus,and low thermal conductivity of the dielectric *** a matrix free strategy is developed to effectively suppress electron multiplication effects and to enhance mechanical modulus and thermal conductivity of a dielectric polymer,which involves the chemical adsorption of an electron barrier layer on boron nitride nanosheet surfaces by chemically adsorbing an amino-containing polymer.A dramatic decrease of leakage current(from 2.4×10^(-6)to 1.1×10^(-7)A cm^(-2)at 100 MV m^(-1))and a substantial increase of breakdown strength(from 340 to 742 MV m^(-1))were achieved in the nanocompostes,which result in a remarkable increase of discharge energy density(from 5.2 to 31.8 J cm^(-3)).Moreover,the dielectric strength of the nanocomposites suffering an electrical breakdown could be restored to 88%of the original *** study demonstrates a rational design for fabricating dielectric polymer nanocomposites with greatly enhanced electric energy storage capacity.

关键词： Boron nitride nanosheets Electron barrier layer Relaxor ferroelectric polymers Nanocomposites Electrical energy storage

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Strategic Design and Facile Synthesis of Porous Hyper-Cross-Linked Phosphonium Bromide Microspheres for Catalyzing Co2 Conversion to Cyclic Carbonate

SSRN

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SSRN 2024年

作者： Li, Ming Liu, Ruixia Liu, Qi Liu, Ying Liu, Yifan Su, Qian Yang, Zifeng Li, Yunong Henan Institute of Advanced Technology Zhengzhou University Zhengzhou450001 China Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou450000 China

ABSTRACT: Heterogeneous ionic liquid (IL) catalysts with multiple active sites can be considered as the highly efficient catalyst for CO2 conversion to cyclic carbonates. It is extremely challenging to achieve the strategic design and precise control of multi-site polymeric ILs’ morphology and properties. In this work, we developed a novel and facile polymerization-ionization method employing flexible brominated monomers as raw materials (e.g. 4-bromo-1-butene) to successfully synthesize porous hyper-cross-linked phosphonium bromide-microspheres (PBr-microspheres), in order to break through the drawbacks of multi-step preparation and difficulty in microsphere forming. Compared with conventional bromine spheres of the same size, the specific surface area of the new synthetic bromine sphere is 16 times, and the average pore size is one-eighth, with 3-times CO2 adsorption capacity, with rich microporous structure and exposed active sites, excellent CO2 adsorption capacity and thermal stability. PBr-microspheres can achieve synergistic effect of physical adsorption and chemical interaction for CO2, thus enhancing the catalytic performance in CO2 conversion process, affording propylene oxide conversion of 99.7% and propylene carbonate selectivity of 99.9%, while the catalytic activity did not decrease significantly after reusing 8 runs. This facile controllable synthesis of PBr-microspheres with excellent catalytic performance provides a new idea for heterogeneous ILs catalyzed CO2 utilization. © 2024, The Authors. All rights reserved.

关键词： Carbon dioxide

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Introduction of the interfacial layer between filler and matrix: An effective approach towards developing high thermal conductive dielectric composite

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Ceramics International 2025年

作者： Shen, Jie Chen, Xian Qi, Yu He, Wenhao Li, Qiangzhi Zhang, Jiayi Zhou, Jing Chen, Wen Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang441000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Sanya Science and Education Innovation Park Wuhan University of Technology Sanya572024 China

In the development of high-performance electronic devices, high thermal conductive dielectric composites are crucial. For PTFE-based dielectric composites, enhancing thermal conductivity while maintaining low dielectric properties remains a challenge. The key issue lies in the high interfacial thermal resistance between fillers and the PTFE matrix, which restricts the improvement of thermal conductivity. This paper focuses on introducing an interfacial layer between the filler and the matrix as an effective approach. By constructing a SiO2 interfacial layer between hBN and PTFE, we formed hBN@SiO2 core-shell structured fillers and then prepared hBN@SiO2/PTFE composites. This method significantly reduces the interfacial thermal resistance. Consequently, the thermal conductivity of the composite reaches 1.40 W/(m·K), the coefficient of thermal expansion decreases, and it still keeps a low dielectric constant of 3.9 and low dielectric loss of 1 × 10−4. This study provides an innovative and effective way for the development of high thermal conductive dielectric composites, which is of great significance for high-power and high-frequency applications. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Dielectric losses

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