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Ultrastable MOF-based foams for versatile applications

Nano Research 2022年第4期15卷 2961-2970页

作者： Qian Hu Licong Xu Kaixing Fu Feichao Zhu Taoyu Yang Tao Yang jinming luo Minghua Wu Deyou Yu Engineering Research Center for Eco-Dyeing and Finishing of Textiles Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018China Brook Byers Institute for Sustainable Systems School of Civil and Environmental EngineeringGeorgia Institute of TechnologyAtlanta 30332USA School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan UniversityChangsha 410082China Institute for Nanomaterials Advanced Technologies and InnovationTechnical University of LiberecLiberec 46117Czech Republic Zheijiang Sci-Tech University Tongxiang Research Institute Tongxiang 345000China

Metal-organic frameworks(MOFs)are attractive for promising applications but plagued by difficult recovery and deployment due to their intrinsic nano/micro powder nature.Although significant efforts have been made to develop separable solid matrixes for MOF supporting,the poor loading stability and durability of MOFs still challenge their engineering applications.Here,we present a facile and effective approach to fabricate MOF-based melamine foams(MFs)(denoted as MOFiths)with ultrahigh loading stability and operation stability,easy separation,and high-efficient performance for versatile robust applications.By adopting our approach,numbers of typical fragile MOFs characterized with wide ranges of particle size(from~nm to~μm)can be precisely incorporated into MFs with controllable loading ratios(up to~1,600%).Particularly,the produced MOFiths show excellent capacities for the highly effective and durable water purifications and acetalization reactions.100%of organic pollutants can be rapidly destructed within 10 min by MOFiths initiated Fenton or catalytic ozonation processes under five successive cycles while the maximum adsorption capacity of MOFiths toward Pb(II),Cd(II),and Cu(II)reaches to 422,222,and 105 mg·g^(-1),respectively.This study provides a critical solution to substantially facilitate the engineering applications of MOFs for long-term use in practice.

关键词： metal-organic framework melamine foam ultrastability versatile applications long-term use

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Microbial mediated arsenic biotransformation in wetlands

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Frontiers of Environmental Science & Engineering 2017年第1期11卷 5-15页

作者： Si-Yu Zhang Paul N. Williams jinming luo Yong-Guan Zhu State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Institute for Global Food Security School of Biological Sciences Queen's University Belfast Belfast BT9 7BN UK Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Key Laboratory of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China

Arsenic （As） is a pervasive environmental toxin and carcinogenic metalloid. It ranks at the top of the US priority List of Hazardous Substances and causes worldwide human health problems. Wetlands, including natural and artificial ecosystems （i.e. paddy soils） are highly susceptible to As enrichment; acting not only as repositories for water but a host of other elemental/chemical moieties. While macroscale processes （physical and geological） supply As to wetlands, it is the micro-scale biogeochemistry that regulates the fluxes of As and other trace elements from the semi-terrestrial to neighboring plant/ aquatic/atmospheric compartments. Among these fine-scale events, microbial mediated As biotransformations contribute most to the element＇s changing forms, acting as the ＇switch＇ in defining a wetland as either a source or sink of As. Much of our understanding of these important microbial catalyzed reactions follows relatively recent scientific discoveries. Here we document some of these key advances, with focuses on the implications that wetlands and their microbial mediated transformation pathways have on the global As cycle, the chemistries of microbial mediated As oxidation, reduction and methylation, and future research priorities areas.

关键词： Arsenic Wetland Microbes Switch

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The preparation and performance of lignin-based activated carbon fiber adsorbents for treating gaseous streams

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Frontiers of Chemical Science and Engineering 2017年第3期11卷 328-337页

作者： Min Song Wei Zhang Yongsheng Chen jinming luo John C. Crittenden Key Laboratory of Energy Thermal Conversion and Control (Ministry of Education) School of Energy and Environment Southeast University Nanjing 210096 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology Shanghai 200237 China Brook Byers Institute for Sustainable System School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta GA 30332-0595 USA

Two types of lignin-based carbon fibers were prepared by electrospinning method. The first was activated with Fe304 （LCF-Fe）, and the second was not activated with Fe3O4 （LCF）. Gas phase adsorption isotherms for toluene on LCF-Fe and LCF were studied. The gas phase adsorption isotherm for 0% RH showed LCF-Fe have about 439 mg/g adsorption capacity which was close to that of commercially available activated carbon （500 rag/g）. The Dubinin-Radushkevich equation described the isotherm data very well. Competitive adsorption isotherms between water vapor and toluene were measured for their RH from 0 to 80%. The effect of humidity on toluene gas-phase adsorption was predicted by using the Okazaki et al. model. In addition, a constant pattern homogeneous surface diffusion model （CPHSDM） was used to predict the toluene breakthrough curve of continuous flow-packed columns containing LCF-Fe, and its capacity was 412 mg/g. Our study, which included material characterization, adsorption isotherms, kinetics, the impact of humidity and fixed bed performance modeling, demonstrated the suitability of lignin-based carbon fiber for volatile organic compound removal from gas streams .

关键词： lignin carbon fiber electrospinning toluene humidity

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基于Pockels电光效应的电压方向测量

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激光技术 2024年第3期48卷 352-356页

作者：钟远聪邓定南罗劲明陈书汉嘉应学院物理与电子工程学院梅州514015

为了实现在光学电压互感器中电压方向的测量,利用Pockels效应和偏振光理论进行理论分析和实验验证,提出了一种基于Pockels效应的电压方向测量方法,得到不同方向的电压与出射光偏振态、光传播方向之间的关系。结果表明,当施加的电压值为1... 详细信息

为了实现在光学电压互感器中电压方向的测量,利用Pockels效应和偏振光理论进行理论分析和实验验证,提出了一种基于Pockels效应的电压方向测量方法,得到不同方向的电压与出射光偏振态、光传播方向之间的关系。结果表明,当施加的电压值为100 V时,迎着光观测,透射光的长轴和短轴分别位于空间角度20°和110°,再通过λ/4波片后的光偏振方向位于坐标的二、四象限,可判断透射光是右旋椭圆偏振光,电压方向沿光传播方向;长轴和短轴分别位于角度130°和40°的透射光通过λ/4波片后的光偏振方向位于一、三象限,则透射光是左旋椭圆偏振光,电压方向则沿光传播的相反方向。实验结果与理论分析相符,可指导设计既能测量电压大小又能判断其方向的光学电压互感器。

关键词：光电子学电压方向 Pockels效应椭圆偏振光偏振态

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湖南省县域节水型社会达标建设成效及思考

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湖南水利水电 2024年第1期 58-60页

作者：徐幸仪罗金明山红翠湖南省水利水电科学研究院湖南长沙410007

湖南省虽位于南方丰水地区,但资源型、工程型、水质型、制度型缺水等问题会制约经济社会的可持续发展,节水工作意义重大。2019—2022年,湖南省开展了五批共62个县(市、区)节水型社会达标建设,以湖南省第五批县域节水型社会达标建设县为... 详细信息

湖南省虽位于南方丰水地区,但资源型、工程型、水质型、制度型缺水等问题会制约经济社会的可持续发展,节水工作意义重大。2019—2022年,湖南省开展了五批共62个县(市、区)节水型社会达标建设,以湖南省第五批县域节水型社会达标建设县为例,开展深入分析,总结主要工作成效,为南方丰水地区开展县域节水型社会达标建设提升创建质量提供实践参考。

关键词：县域节水型社会达标建设建设成效

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透过散射介质的散斑统计特性研究

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物理实验 2024年第5期44卷 47-53页

作者：林艾扬罗永锜王文皓谢欣欣杨家瑶吴欣然罗劲明张海宁嘉应学院物理与电子工程学院广东梅州514015

复杂散射介质的衍射通常会形成散斑图像,该特性使得其在激光技术、电子和光电子等领域具有重要的应用价值.搭建了透过散射介质衍射形成的散斑测量系统,研究了CCD曝光时间、衍射距离和散射面直径对散斑统计特性的影响.实验结果表明:改变... 详细信息

复杂散射介质的衍射通常会形成散斑图像,该特性使得其在激光技术、电子和光电子等领域具有重要的应用价值.搭建了透过散射介质衍射形成的散斑测量系统,研究了CCD曝光时间、衍射距离和散射面直径对散斑统计特性的影响.实验结果表明:改变光学系统参量,透过散射片的散斑特性也会随之改变;选择合适的曝光时间能够获取对比度和光强分布适中的散斑图像,其空间衍射特性可用散斑平均尺寸表征,但对于散斑特性的微小变化,则可利用相关系数和数字图像相关结果进行辅助分析.

关键词：散射介质衍射散斑统计特性

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Noise and delay sustained chimera state in small world neuronal network

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Science China(Technological Sciences) 2019年第7期62卷 1134-1140页

作者： TANG Jun ZHANG Juan MA Jun luo jinming School of Physics China University of Mining and Technology Xuzhou 221116 China Department of Physics Lanzhou University of Technology Lanzhou 730050 China School of Mathematics China University of Mining and Technology Xuzhou 221116 China

Chimera state in neuronal network means the coexistence of synchronized and desynchronized firing patterns. It attracts much attention recently due to its possible relevance to the phenomenon of unihemispheric sleep in mammals. In this paper, we search for chimera state in a noisy small-world neuronal network, in which the neurons are delayed coupled. We found both transient and permanent chimera state when time delay is close to a critical value. The chimera state occurs due to the competition between the synchronized and desynchronized patterns in the neuronal network. On the other hand, intermediate intensity of noise facilitates the occurrence of delay-sustained chimera states. Comparison between noise and delay shows that time delay is the key factor determining the chimera state, whereas noise is a subordinate one.

关键词： delay noise chimera state neuronal network

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Characteristics of Channeling Flow in Cultivated Horizon of Saline Rice Soil

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Chinese Geographical Science 2006年第4期16卷 342-346页

作者： luo jinming DENG Wei ZHANG Xiaoping YANG Fan LI Xiujun Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China

By applying bromide ion as tracer,the channeling flow has been quantitatively described in saline rice soil and alkaline soil of Da,an City,Jilin Province of China.Breakthrough curves of bromide ion in the saline rice soils after 1-year cultivation and 5-year cultivation and alkaline soil have been attained.Results show that the rice cultivation practice can improve the alkaline soil structure,however,it can accelerate the development of channeling flow pathway.Therefore,the channeling flow pathway has been developed widely in saline rice soil,but rarely in the alkaline soil.Three models of convection-dispersion equation(CDE),transfer functional model(TFM) and Back-Progation Network(BP Network) were used to simulate the transportation process of bromide ion.The peaks of probability density function of saline rice soil are higher with left skewed feature compared with that of the alkaline soil.It shows that the TFM and CDE can simulate the transportation process of the bromide ion in saline rice soil after 5-year cultivation,however,some deviation exists when it was used to simulate transportation process of bromide ion in saline rice soil after 1-year cul-tivation and alkaline soil;BP network can effectively simulate transportation process of bromide ion in both saline rice soil and alkaline soil.

关键词：明渠流盐渍水稻土盐碱土耕作层对流-扩散方程吉林省传递函数

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H∞ control for a class of switched fuzzy systems via output feedback

H∞ control for a class of switched fuzzy systems via output...

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第32届中国控制与决策会议

作者： Yudong Jiang jinming luo Jing Gao Hong Zhu Nanjing University of Aeronautics and Astronautics Shenyang Institute of Engineering

The H control problem is investigated for a class of switched fuzzy systems via output feedback. The solvability for the H control problem of each fuzzy system is not assumed. A static output feedback control law and a switching law are designed such that the H control problem of the closed loop switched fuzzy system is solvable based on the multiple Lyapunov functions method. Finally, an algorithm is provided to solve the matrix inequalities.

关键词： Switched fuzzy system H∞ control Output feedback Multiple Lyapunov functions

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Stabilization of a class of Networked Switched Fuzzy Systems 25th

Stabilization of a class of Networked Switched Fuzzy Systems

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第25届中国控制与决策会议

作者： Jie Wang Dan Ma jinming luo Jun Zhao State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

ISBN: (纸本)9781467355339

In this paper, we study a class of networked switched fuzzy systems, which switched plants with the controllers connected by limited bandwidth communication channels, network induced delay and packet dropout happened inevitably. Using the parallel distributed compensation （PDC） method, we design a switched fuzzy controller to stabilize the closed-loop system. Meanwhile, free-weighting matrix has been taken to deal with the delay and packet dropout cased by network. Finally, a numerical example is given to demonstrate the effectiveness of the proposed approach.

关键词： Switched fuzzy systems networked induced delay stabilization free-weighting matrix.

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