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Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu xiaoling liu Biao Meng Tao Chen Yu Han Jun Wang Shibo Xi Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

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Multiobjective Program with Support Functions Under(G, C, ρ)-Convexity Assumptions

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Journal of Systems Science & Complexity 2015年第5期28卷 1148-1163页

作者： YUAN Dehui liu xiaoling Department of Mathematics Hanshan Normal University

This paper deals with multiobjective programming problems with support functions under(G, C, ρ)-convexity assumptions. Not only sufficient but also necessary optimality conditions for this kind of multiobjective programming problems are established from a viewpoint of(G, C, ρ)-*** the sufficient conditions are utilized, the corresponding duality theorems are derived for general Mond-Weir type dual program.

关键词： (G C ρ)-convex G-duality theory G-necessary conditions G-sufficient conditions multiobjective program

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Analysis on Deflection Characteristics of Steel Cable-Stayed Bridge

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第5期35卷 890-895页

作者： liu xiaoling Huang Qiao Ren Yuan Faculty of Maritime and Transportation Ningbo University School of Transportation Southeast University

Various kinds of deflection characteristics on the steel cable-stayed bridge(Nanjing No.3 Yangtze River Bridge)are investigated by different mathematical statistical ***,via Pearson correlation coefficient calculation,it shows good consistency between the adjacent measuring point of side span or middle ***,taking mid-span deflection as an example,the correlation analysis of deflection and temperature is *** are synchronous via cross correlation coefficient calculation but not completely linear and a"hysteresis loop"phenomenon of three stages is *** fitting result on the monitoring data at day time is consistent with the numerical value through the application of unit temperature difference between the cable and girder and the positive temperature gradient of girder in the finite element *** the temperature effect is *** loads effect is obtained from wavelet *** extracted curve can indirectly reflect the change of traffic ***,the structural damage is analyzed through the trend fusion on the deflection,cable force and visual inspection from 2006 to *** conclusions can provide a basis for management departments to carry out special detection.

关键词： steel cable-stayed bridge health monitoring deflection characteristics analysis

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Composites recycling solutions for the aviation industry

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Science China(Technological Sciences) 2017年第9期60卷 1291-1300页

作者： WONG Kok RUDD Chris PICKERING Steve liu xiaoling Ningbo Nottingham International Academy for the Marine Economy and Technology University of Nottingham Ningbo China Ningbo 315100 China Ningbo Nottingham New Materials Institute University of Nottingham Ningbo China Ningbo 315100 China Division of Materials Mechanics and Structures Faculty of Engineering University of Nottingham Nottingham UK

Ten of thousands of aircraft are expected to retire in the next 20 *** manufacturers are gearing up for a new wave of recycling challenges as these aircrafts contain significant higher amount of carbon fibre reinforced polymer composite,which cannot be recycled by the conventional processes designed for metallic *** manufacturers have been working with the recycling industry to limit unsustainable dismantling that is harmful to the environment and the potential liability risk of re-entry of un-certified salvaged parts back to the aviation *** organised recycling network and procedures have already been set up for the conventional metallic alloys and will soon be required to include the composite *** paper reports the existing aircraft recycling practice and reviews the key recycling technologies for thermoset *** consumptions of these technologies are sought from the literature and are reported in this *** in development of reuse options for the recycled fibre is also included with discussion of their advantages and *** challenge of working with the fluffy fibre is considered and the benefit of fibre alignment is highlighted for encouraging a widespread use of the fibre.

关键词： composite recycling carbon fibre aviation

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Mass transfer characteristics of chiral pharmaceuticals on membrane used for polar organic chemical integrative sampler

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Journal of Environmental Sciences 2024年第2期136卷 670-681页

作者： Liyang Wang Ruixia liu Youya Zhou Peng Yuan xiaoling liu Hongjie Gao College of Water Science Beijing Normal UniversityBeijing 100018China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental ScienceBeijing 100012China Technical Centre for Soil Agriculture and Rural Ecology and EnvironmentMinistry of Ecology and EnvironmentBeijing 100012China

Passive sampling technology has good application prospects for monitoring trace pollutants in aquatic *** research on the sampling mechanism of this technology is essential to improve the measurement accuracy and extend the application scope of this *** this study,adsorption and permeation experiments were performed to investigate the sorption and mass transfer properties of five chiral pharmaceuticals at the enantiomeric level on polyethersulfone(PES)and polytetrafluoroethylene(PTFE)membranes used in a polar organic chemical integrative *** adsorption experiments showed that the PES membrane had an adsorption phenomenon for most selected pollutants and an insignificant sorption behavior was observed for all selected pharmaceuticals on the PTFE membrane except for R(S)-*** diffusion coefficients of selected pharmaceuticals onto the PTFE membrane were approximately one order of magnitude higher than those onto the PES *** permeation experiment indicated that under different hydraulic conditions,the change of the relative pollutant concentration through the PTFE membrane for the composite pollutant system was more obvious than that for the single pollutant system,and mass transfer hysteresis exists for both contaminant systems through PES *** the first-order equation or 3-component model to estimate the overall mass transfer coefficients,the results showed that the overall mass transfer coefficient values of pollutants in the composite pollutant system onto both membranes were higher than those in the single pollutant *** parameter was mainly influenced by the synergistic effects of the multi-analyte interaction and diminished water boundary layers during the mass transfer process.

关键词： Sorption phenomenon Permeation behavior Mass transfer properties Modeling calculation Chiral pharmaceuticals PES and PTFE membrane

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Screening and identification of purine degrading Lactobacillus fermentum9-4 from Chinese fermented rice-flour noodles

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Food Science and Human Wellness 2022年第5期11卷 1402-1408页

作者： Lianghua Lu Tiantian liu xiaoling liu Chenghua Wang College of Light Industry and Food Engineering Guangxi UniversityNanning 530004China

The aim of this study was to isolate a new purine-degrading potential probiotic strain from Chinese fermented rice-flour noodles and investigate its potential application in purine-degrading food development for promising anti-gout therapy.A new lactic acid bacteria strain designated as Lactobacillus fermentum 9-4 was screened out from 10 Shengzhamifen samples by a comprehensive method integrating agar plate selection,in vitro purine-metabolizing enzymatic activities of xanthine oxidase and urate oxidase,16 S rRNA gene sequencing and *** resting cells of *** 9-4 showed the maximum degradation rates of inosine and guanosine by respective 2.13×10^(-3) and 2.78×10^(-3) g/(L·min),and the highest assimilation ratio of guanosine by(55.93±3.12)%,which are improvements over LAB strains characterized *** fermented by *** 9-4 also efficiently assimilated the inosine and guanosine,with respective degradation rates of 98.10%and 98.56%higher than those of the commercial *** *** 9-4 showed excellent survival(>80%)under the conditions of pH 2.5 and 0.1%bile *** results suggest that *** 9-4 may be a promising candidate as a probiotic for developing low-purine foods.

关键词： Hyperuricemia Probiotics Lactobacillus fermentum Low-purine food Fermented rice noodle

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Intelligent Diagnosis of Highway Bridge Technical Condition Based on Defect Information

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Structural Durability & Health Monitoring 2024年第6期18卷 871-889页

作者： Yanxue Ma xiaoling liu Bing Wang Ying liu Faculty of Maritime and Transportation Ningbo UniversityNingbo315211China School of Civil&Environmental Engineering and Geography Science Ningbo UniversityNingbo315211China

In the bridge technical condition assessment standards,the evaluation of bridge conditions primarily relies on the defects identified through manual inspections,which are determined using the comprehensive hierarchical analysis ***,the relationship between the defects and the technical condition of the bridges warrants further *** address this situation,this paper proposes a machine learning-based intelligent diagnosis model for the technical condition of highway ***,collect the inspection records of highway bridges in a certain region of China,then standardize the severity of diverse defects in accordance with relevant ***,in order to enhance the independence between the defects,the key defect indicators were screened using Principal Component Analysis(PCA)in combination with the weights of the building *** on this,an enhanced Naive Bayesian Classification(NBC)algorithm is established for the intelligent diagnosis of technical conditions of highway bridges,juxtaposed with four other algorithms for ***,key defect variables that affect changes in bridge grades are *** results showed that the technical condition level of the superstructure had the highest correlation with cracks;the PCA-NBC algorithm achieved an accuracy of 93.50%of the predicted values,which was the highest improvement of 19.43%over other *** purpose of this paper is to provide inspectors with a convenient and predictive information-rich method to intelligently diagnose the technical condition of bridges based on bridge *** results of this research can help bridge inspectors and even non-specialists to better understand the condition of bridge defects.

关键词： Highway bridges defects Naive Bayesian classification principal component analysis machine learning

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Photocatalytic Reduction of Nitro Compounds Using TiO2 Photocatalyst by UV and Vis Dye-sensitized Systems

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Chinese Journal of Chemistry 2011年第3期29卷 399-404页

作者： Chen, Shifu Zhang, Huaye Yu, xiaoling liu, Wei Department of Chemistry Huaibei Normal University Huaibei Anhui 235000 China

Nitro-aromatic compounds can be photocatalytically reduced into the corresponding amine-aromatic com- pounds using TiO2 as a photocatalyst in the UV/TiO2/holes scavenger and Vis/TiO2/dye-sensitized systems. In the UV/TiO2/holes scavenger system, reaction substrate alcohols such as methanol could be used as the holes scavengers, and in the Vis/TiO2/dye-sensitized system, substrate alcohols could be oxidized to the corresponding aldehydes with high selectivity. When methanol was used as the holes scavengers and the illumination time was 6 h, 87.2% ofp-nitrotoluene could be photocatalytically reduced into p-toluidine. In the Vis/TiO2/dye-sensitized system, the effect of aromatic alcohols for the photocatalytic reduction of nitrobenzene was better than that of other alcohols At the same time, aromatic alcohols can be easily oxidized, and the production efficiencies of the corresponding aldehydes were higher than those of other alcohols. The possible reaction mechanisms were also proposed.

关键词： photochemistry synthetic method nitro-aromatic compounds UV/TiO2/holes scavenger Vis/TiO2/dye-sensitized systems

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Electromagnetic interference shielding properties of polymer derived SiC-Si3N4 composite ceramics

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Journal of Materials Science & Technology 2019年第12期35卷 2832-2839页

作者： xiaoling liu Xiaowei Yin Wenyan Duan Fang Ye Xinliang Li Science and Technology on Thermostructure Composite Materials Laboratory Northwestern Polytechnical UniversityWest Youyi Rd.No.127Xi'an 710072China Xi'an ASN Technology Group Co. Ltd.Xi'an 710065China

SiC-Si3N4 composite ceramics are successfully fabricated by pyrolysis of ferrocene-modified polycarbosilane(PCS) mixed with inert filler Si3N4 powders, followed by thermal treatment from 1100℃ to 1400℃ in Ar atmosphere. The porosity of SiC-Si3N4 ceramics decreases to 6.4% due to the addition of inert filler Si3N4. And the content and crystallization degree of free carbon and SiC derived from PCS are improved simultaneously with the increase of thermal treatment temperature. Finally, the free carbon and SiC interconnect, forming the conductive network. As a result, the electromagnetic interference(EMI) shielding performance of the as-prepared ceramic annealed at 1400℃ reaches up to 36 d B, meaning more than99.9% of EM energy is shielded. The low porosity and high EMI shielding performance enable SiC-Si3N4 composite ceramics to be a promising electromagnetic shielding and structural material.

关键词： Polymer derived ceramics Electromagnetic shielding properties SiC-Si3N4 Inert filler

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Heterostructuring 2D Co_(2)P nanosheets with 0D CoP via a saltassisted strategy for boosting hydrogen evolution from ammonia borane hydrolysis

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Nano Research 2023年第5期16卷 6260-6269页

作者： Chao Wan xiaoling liu Jiapei Wang Fengqiu Chen Dang-Guo Cheng Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China School of Chemistry and Chemical Engineering Anhui University of TechnologyMa’anshan 243002China

Ammonia borane(NH3BH3,AB)holds promise for chemical storage of ***,designing superb and low-cost photocatalyst to drive hydrogen evolution from AB under visible light irradiation is highly desirable but remains a major challenge for promoting the practical utilization of ***,we demonstrated a heterostructure photocatalyst consisting of zerodimensional(0D)CoP nanoparticles immobilized on two-dimensional(2D)Co_(2)P nanosheets(CoP/Co_(2)Ps)as a high-performance and low-cost catalyst for hydrogen evolution from AB hydrolysis,in which 0D/2D heterostructure was synthesized using the saltinduced phase transformation ***,the optimized CoP/Co_(2)Ps exhibit a robust H_(2) evolution rate of 32.1 L∙min^(−1)∙g_(Co)^(−1),corresponding to a turnover frequency(TOF)value of 64.1 min^(−1),being among the highest TOF for non-noblemetal catalysts ever reported,even outperforming some precious metal *** work not only opens a new avenue to accelerate hydrogen evolution from AB by regulating the electronic structures of heterointerfaces,but also provides a novel strategy for the construction of precious-metal-free materials for hydrogen-related energy catalysis in the future.

关键词： hydrogen storage ammonia borane hydrolysis heterostructure CoP/Co_(2)P nanosheets(CoP/Co_(2)Ps) hydrogen evolution

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