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Chinese Journal of Chemical Engineering 2022年第6期35卷 113-125页

作者： Yu Zhang ling Zhao Ziang Chen xinyong li School of Ecology and Environment Inner Mongolia UniversityChina School of Environmental Science&Technology Dalian University of TechnologyChina College of Veterinary Medicine University of FloridaUnited States

MnO_(x)-Fe_(3)O_(4) nanomaterials were fabricated by using the innovative scheme of pyrolyzing manganesedoped iron-based metal organic framework in inert atmosphere and exhibited extraordinary performance of NO reduction by CO(CO-SCR).Multi-technology characterizations were conducted to ascertain the properties of fabricated materials(e.g.,TGA,XRD,SEM,FT-IR,XPS,BET,H_(2)-TPR and O_(2)-TPD).Moreover,the interaction between reactants and catalysts was ascertained by in situ *** results demonstrated that Mn was an ideal promoter for iron oxides,resulting in decrease of crystallite size,improve reducibility property,enhance the mobility and the amount of lattice O^(2-) species,as well as strength the adsorption ability of active NO and CO to form multiple species(e.g.,nitrate and carbonate).The unprecedented enhancement of CO-SCR activity over Mn-Fe nanomaterials follows the Eley-Rideal(E-R)and Langmuir-Hinshelwood(L-H)reaction pathway.

关键词： Metal-organic framework MnO_(x)-doped Fe_(3)O_(4) NO reduction In situ FT-IR Reaction mechanism

FFT-Based Numerical Method for Nonlinear Elastic

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Chinese Journal of Mechanical Engineering 2023年第5期36卷 266-279页

作者： Fei Guo Fan Wu xinyong li Yijie Huang Zhuo Wang State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China Joint Research Center for Rubber and Plastic Seals Tsinghua UniversityBeijing 100084China State Key Laboratory of Smart Manufacturing for Special Vehicles and Transmission System Baotou 014030China

In theoretical research pertaining to sealing, a contact model must be used to obtain the leakage channel. However, for elastoplastic contact, current numerical methods require a long calculation time. Hyperelastic contact is typically simplifed to a linear elastic contact problem, which must be improved in terms of calculation accuracy. Based on the fast Fourier transform, a numerical method suitable for elastoplastic and hyperelastic frictionless contact that can be used for solving two-dimensional and three-dimensional (3D) contact problems is proposed herein. The nonlinear elastic contact problem is converted into a linear elastic contact problem considering residual deformation (or the equivalent residual deformation). Results from numerical simulations for elastic, elastoplastic, and hyperelastic contact between a hemisphere and a rigid plane are compared with those obtained using the fnite element method to verify the accuracy of the numerical method. Compared with the existing elastoplastic contact numerical methods, the proposed method achieves a higher calculation efciency while ensuring a certain calculation accuracy (i.e., the pressure error does not exceed 15%, whereas the calculation time does not exceed 10 min in a 64 × 64 grid). For hyperelastic contact, the proposed method reduces the dependence of the approximation result on the load, as in a linear elastic approximation. Finally, using the sealing application as an example, the contact and leakage rates between complicated 3D rough surfaces are calculated. Despite a certain error, the simplifed numerical method yields a better approximation result than the linear elastic contact approximation. Additionally, the result can be used as fast solutions in engineering applications.

关键词： Numerical method Elastoplastic contact Hyperelastic contact FEM FFT

Adsorption and membrane separation for removal and recovery of volatile organic compounds

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Journal of Environmental Sciences 2023年第1期123卷 96-115页

作者： Guoqiang Gan Shiying Fan xinyong li Zhongshen Zhang Zhengping Hao State Key Laboratory of Fine Chemicals Key Laboratory of Industrial Ecology and Environmental Engineering(MOE)School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National Engineering Laboratory for VOCs Pollution Control Material and Technology University of Chinese Academy of SciencesBeijing 101408China

Volatile organic compounds(VOCs)are a crucial kind of pollutants in the environment due to their obvious features of severe toxicity,high volatility,and poor *** is particularly urgent to control the emission of VOCs due to the persistent increase of concentration and the stringent *** China,clear directions and requirements for reduction of VOCs have been given in the“national plan on environmental improvement for the 13th Five-Year Plan period”.Therefore,the development of efficient technologies for removal and recovery of VOCs is of great *** technologies are favored by researchers due to their advantages in both recycling VOCs and reducing carbon *** them,adsorption and membrane separation processes have been extensively studied due to their remarkable industrial *** overview was to provide an up-to-date progress of adsorption and membrane separation for removal and recovery of ***,adsorption and membrane separation were found to be the research hotspots through bibliometric ***,a comprehensive understanding of their mechanisms,factors,and current application statuses was ***,the challenges and perspectives in this emerging field were briefly highlighted.

关键词： Volatile organic compounds(VOCs) Removal and recovery technology Adsorption Membrane separation Bibliometric analysis

A"turn-on"fluorescent sensor for Pb^(2+)detection based on nitrogen doping carbon dots

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Chinese Journal of Structural Chemistry 2023年第4期42卷 13-17页

作者： Jianan li Wenbo Sun xinyong li Chong Peng National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and TechnologyShanghai200237China School of Resources and Environmental Engineering Shandong University of TechnologyZibo255000China State Key Laboratory of Fine Chemicals and Key Laboratory of Industrial Ecology and Environmental Engineering Dalian University of TechnologyDalian116024China School of Sensing Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China Zhejiang Tiandi Environmental Protection Engineering Co. LtdHangzhou310003China

*** Due to the severe toxicity of heavy metal ions,human health and eco-system are threatened even at ultra-low concentrations[1].Specially,Pb^(2+)arouses more significant concern as its bio-accumulation seriously affects brain development,reproductive systems,and cardiovascular function,consequently resulting in an irreversible *** to World Health Organization(WHO),the maximum allowable Pb^(2+)con-centration on the surface water should belicate pretreatment.

关键词： cardiovascular irreversible doping

硼促进甘氨酸衍生物的电化学C(sp^(2))—H溴化反应

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有机化学 2024年第3期44卷 989-996页

作者：黄克金蔡金博王瑞革张永红王斌夏昱金伟伟李新勇刘晨江新疆大学化学学院乌鲁木齐830017 中国计量大学生命科学学院、浙江省特色农产品品质及危害物控制技术重点实验室杭州310018 凯莱英生命科学技术(天津)有限公司天津300457

报道了一种室温条件下甘氨酸衍生物的电化学芳烃C(sp^(2))—H键溴化方法.在温和反应条件下,以四丁基溴化铵或四丁基三溴化铵为溴源和电解质,顺利地合成了一系列C(sp^(2))—H键溴化的甘氨酰胺、甘氨酸酯和二肽类化合物,收率最高可达95%.... 详细信息

报道了一种室温条件下甘氨酸衍生物的电化学芳烃C(sp^(2))—H键溴化方法.在温和反应条件下,以四丁基溴化铵或四丁基三溴化铵为溴源和电解质,顺利地合成了一系列C(sp^(2))—H键溴化的甘氨酰胺、甘氨酸酯和二肽类化合物,收率最高可达95%.与传统方法相比,该方法具有底物范围广泛、官能团兼容性好、操作方便、无需外加氧化剂和金属催化剂等特点,更加符合绿色化学和环境保护的要求.

关键词：甘氨酸衍生物有机电合成 C—H活化溴化反应

Comparison of dynamic adsorption/desorption characteristics of toluene on different porous materials

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Journal of Environmental Sciences 2012年第3期24卷 520-528页

作者： Weiwei Zhang Zhenping Qu xinyong li Yi Wang Ding Ma Jingjing Wu Key Laboratory of Industrial Ecology and Environmental Engineering(MOE) School of Environmental Science and TechnologyDalian University of TechnologyDalianLinggong 116024China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Four different types of adsorbents, SBA-15, MCM-41, NaY and SiO2, were used to study the dynamic adsorption/desorption of toluene. To further investigate the influence of pore structure on its adsorption performance, two SBA-15 samples with different microspores were also selected. It is shown that microporous material NaY has the largest adsorption capacity of 0.2873 mL/g, and the amorphous SiO2 exhibits the least capacity of 0.1003 mL/g. MCM-41 also shows a lower break through capacity in spite of the relatively small pore diameter, because it can not provide the necessary small geometric confinement for the tiny adsorbates. However, the mesoporous SBA-15 silica with certain micropore volume shows relatively higher adsorption capacity than that of MCM-41 silica. The presence of micropores directly leads to an increase in the dynamic adsorption capacity of toluene. Although NaY has the highest adsorption capacity for toluene, its complete desorption temperature for toluene is high （〉 350°C）, which limits its wide application. On the contrary, mesoporous silica materials exhibits a good desorption performance for volatile organic compounds at lower temperatures. Among these materials mesoporous SBA-15 samples, with a larger amount micropores and a lower desorption temperature, are a potentially interesting adsorbent for the removal of volatile organic compounds. This behavior should been related with the best synergetic effect of mesopores and micropores.

关键词： dynamic adsorption/desorption mesopores micropores toluene

Matryoshka-caged gold nanorods： Synthesis, plasmonic properties, and catalytic activity

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Nano Research 2016年第2期9卷 415-423页

作者： Wei Xiong Debabrata Sikdar lim Wei Yap Pengzhen Guo Malin Premaratne xinyong li Wenlong Cheng Department of Chemical Engineering Monash University Clayton VIC 3800 Australia The Melbourne Centre for Nanofabrication 151 Wellington Road Clayton VIC 3168 Australia Key Laboratory of Industrial Ecology and Environmental Engineering and State Key Laboratory of Fine Chemicals School of Environmental Sciences and Technology Dalian University of Technology Dalian 116024 China Advanced Computing and Simulation Laboratory (AχL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC 3800 Australia

Matryoshka-caged gold nanorods （mCGNRs） were successfully synthesized by alternating between a seed-mediated silver-coating method and galvanic replacement reactions （GRRs）. As the number of matryoshka layers of the mCGNRs increased, the plasmon resonance peak broadened and was red-shifted, and the catalytic activity towards the reduction of 4-nitrophenol （4-NTP） increased. When mCGNRs with 6 layers were used as nanocatalysts in the reduction of 4-nitrophenol, the reaction rate coefficient was 5.2- and 3.7-times higher than that of the gold-nanorod- and caged-gold-nanorod-catalyzed reductions of 4-nitrophenol, respectively. In addition, the surface-plasmon-resonance-based absorption of light enhanced the catalytic performance of the mCGNRs. With the support of a polyurethane foam, the mCGNRs synthesized in this study can be applied as recydable heterogeneous catalysts for the reduction of 4-nitrophenol.

关键词： matryoshka-caged gold nanorods galvanic replacement reaction 4-nitrophenol catalysis surface plasmon resonance

Spatio-temporal evolution and topographic gradient effect of land use and ecosystem service value in the Lhasa River Basin

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Journal of Mountain Science 2024年第6期21卷 2059-2074页

作者： ZHOU Jianwei FENG Bin WU Hua XU Tong CHEN linna ZHAO xinyong GUO Qiyun li Jiatong ZHANG Chenguang ZHU Kangcheng KONG Yuzhong School of Ecology and Environment Tibet UniversityLhasa 850000China School of Engineering Tibet UniversityLhasa 850000China Joint Laboratory of Plateau Surface Remote Sensing Tibet UniversityLhasa 850000China

The Lhasa River Basin forms an essential human settlement area in the southern part of the Qinghai-Tibet *** study employed ecosystem service value(ESV)evaluation model,terrain gradient grading,and Geodetector to analyze land use and ESV in the Lhasa River Basin from 1985 to *** findings reveal that:(1)From 1985 to 2020,grassland was the dominant land *** was a trend of grassland reduction and the expansion of other land types.(2)ESV has increased over the research period(with a total increase of 0.84%),with higher values in the southeast and lower values in the *** contributed the most to ESV,and climate regulation and hydrological regulation were the ecosystem services that contribute the most to ESV.(3)Natural factors like NDVI and altitude,as well as economic factors like population density and distance from roads,influenced the spatial differentiation of ESV,the explanatory power of NDVI reached up to *** interaction between factors had a greater impact than individual *** research results can provide theoretical support for national spatial planning and ecological environment protection in the Lhasa River Basin and other similar areas.

关键词： Ecosystem services value Land use Terrain gradient effect Lhasa River Basin Driving factors

Mechanistic insights into the processes of the initial stage of electrolyte degradation in lithium metal batteries

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Chinese Chemical Letters 2024年第3期35卷 473-478页

作者： Yao Wang Juncheng Wang Jianwei Nai Jianmin Luo xinyong Tao Yujing liu College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014China Moganshan Research Institute at Deqing County Zhejiang University of Technology Huzhou 313000China

The lithium(li)metal batteries(LMBs)are considered one of the most promising next-generation batteries due to its extremely high theoretical specific ***,there are a couple of issues,e.g.,the serious side reactions that occurred at the solid-liquid interface between the electrolyte and li metal anode,hindering the broad commercialization of ***,a comprehensive understanding of the mechanisms underlying the decomposition of electrolytes is crucial to the design of ***,we utilize density functional theory simulations to explore the decomposition mechanism of *** most commonly used ether electrolyte solvents,i.e.,1,2-dimethoxyethane(DME)and 1,3-dioxalane(DOL),based on suitable lithium salts,namely bis(trifluoromethanesulfonyl)imide(liTFSI),are chosen to model the actual *** explicitly demonstrate that an electron-rich environment near the interface accelerates the decomposition of *** ether electrolytes,we show that the liTFSI degradation path is depending on the ratio of DOL to *** addition,the solvation structures of lithium-ion undergo a series of transformations upon electrolyte degradation,becoming thermodynamically more favorable and having a higher reduction potential in an electron-rich *** finding provides new insights into the decomposition mechanisms of electrolytes and paves the way for the rational design of high-performance LMBs.

关键词： li metal battery Electrolyte Solvation structures Interface Density functional theory

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氯代挥发性有机物的光、电催化去除研究进展

科学通报 2020年第26期65卷 2804-2819页

作者：甘国强李新勇大连理工大学环境学院工业生态与环境工程教育部重点实验室大连116024

氯代挥发性有机物(chlorinated volatile organic compounds, Cl-VOCs)的化学稳定性好、毒性高、半衰期长,其去除技术一直都是环境领域的一个重点.光、电催化技术因其催化效率高、工艺设备简单、反应条件温和以及经济环保等工艺优势,受... 详细信息

氯代挥发性有机物(chlorinated volatile organic compounds, Cl-VOCs)的化学稳定性好、毒性高、半衰期长,其去除技术一直都是环境领域的一个重点.光、电催化技术因其催化效率高、工艺设备简单、反应条件温和以及经济环保等工艺优势,受到广泛的关注.本文在对Cl-VOCs的去除方法进行简要分析的基础上,重点综述了光催化降解和电催化脱氯技术去除Cl-VOCs的研究进展.首先对Cl-VOCs的光、电催化反应机制及其优缺点进行简要总结;其次,结合光、电催化反应过程以及Cl-VOCs自身结构特点与催化剂的关系等方面,总结了催化活性的影响因素以及催化剂的种类和特性,为后期Cl-VOCs的有效处理和资源化利用以及高性能的催化剂的合理设计提供参考和依据;最后,对Cl-VOCs光、电催化去除领域潜在的发展趋势进行了展望.

关键词：氯代挥发性有机物光催化降解电催化脱氯催化剂反应机制