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Tuning synergy between nickel and iron in Ruddlesden-Popper perovskites through controllable crystal dimensionalities towards enhanced oxygenevolving activity and stability

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Carbon Energy 2024年第6期6卷 113-123页

作者： Haijuan Zhang Daqin Guan Yuxing Gu Hengyue Xu Chunchang Wang Zongping Shao Youmin Guo School of Materials Science and Technology Anhui UniversityHefeiAnhuiChina Department of Building and Real Estate The Hong Kong Polytechnic UniversityHung HomHong KongChina WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech UniversityNanjingJiangsuChina Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhenGuangdongChina

Ni-Fe-based oxides are among the most promising catalysts developed to date for the bottleneck oxygen evolution reaction(OER)in water ***,understanding and mastering the synergy of Ni and Fe remain ***,we report that the synergy between Ni and Fe can be tailored by crystal dimensionality of Ni,Fe-contained Ruddlesden-Popper(RP)-type perovskites(La_(0.125)Sr_(0.875))n+1(Ni_(0.25)Fe_(0.75))nO3n+1(n=1,2,3),where the material with n=3 shows the best OER performance in alkaline *** X-ray absorption spectroscopy spectra before and after OER reveal that the material with n=3 shows enhanced Ni/Fe-O covalency to boost the electron transfer as compared to those with n=1 and n=*** experimental investigations demonstrate that the Fe ion is the active site and the Ni ion is the stable site in this system,where such unique synergy reaches the optimum at n=***,as n increases,the proportion of unstable rock-salt layers accordingly decreases and the leaching of ions(especially Sr^(2+))into the electrolyte is suppressed,which induces a decrease in the leaching of active Fe ions,ultimately leading to enhanced *** work provides a new avenue for rational catalyst design through the dimensional strategy.

关键词： crystal dimensionalities oxygen evolution reaction Ruddlesden-Popper perovskites synergy

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New insight into the synergy of nitrogen-related sites on biochar surface for sulfamethoxazole adsorption from water

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中国化学快报:英文版 2023年第9期34卷 254-257页

作者： Chuanbin Wang Lingchao Kong Yanshan Wang Xiaoqiang Cui Ning Li Beibei Yan Guanyi Chen School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology Tianjin UniversityTianjin 300072China School of Environmental Science&Engineering Southern University of Science and TechnologyShenzhen 518055China Georgia Tech Shenzhen Institute Tianjin UniversityShenzhen 518071China School of Mechanical Engineering Tianjin University of CommerceTianjin 300134China School of Science Tibet UniversityLhasa 850012China

In-depth exploration of the relationship among different adsorption sites is conducive to design of efficient adsorbents for target pollutants removal from *** this study,the experiments,multivariate non-linear regression and density functional theory calculations are applied to explore the possible synergistic effects of three nitrogen(N)-containing sites on cow dung biochar surface for sulfamethoxazole(SMX)***,a strong synergistic effect between pyridinic N and pyrrolic N sites was found for sulfamethoxazole *** adsorption energies of SMX on four pyrrolic N-coupled pyridinic N structures were-1.02,-0.41,-0.49 and-0.72 e V,much higher than the sum of adsorption energies(-0.31 e V)on pyrrolic N and pyridinic ***,the alteration of Mulliken charge revealed that the simultaneous presence of pyridinic N and pyrrolic N improved the electron transfer remarkably from-0.459 e and 0.094 e to-0.649 e and 0.186 e,benefiting for SMX *** work firstly explored the possible synergies of adsorption sites on biochar surface for organic contaminants removal from water,which shed new lights on the adsorption mechanism and provided valuable information to design efficient adsorbents in the field of water treatment.

关键词： synergy Pyrrolic N Pyridinic N Biochar Adsorption

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Co-milling as a synergy factor for co-firing.A case study of wood/coal blends

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Carbon Resources Conversion 2023年第1期6卷 51-57页

作者： A.G.Matveeva Yu.F.Patrakov A.I.Sechin P.E.Plyusnin A.V.Kuznetsov E.M.Podgorbunskikh V.A.Bukhtoyarov A.L.Bychkov I.O.Lomovsky O.I.Lomovsky Institute of Solid State Chemistry and Mechanochemistry SB RASKutateladze Str.18Novosibirsk 630090Russia Federal Research Center of Coal and Coal Chemistry SB RASLeningradsky Ave.10Kemerovo 650065Russia National Research Tomsk Polytechnic University Lenina Str.30Tomsk 634050Russia Nikolaev Institute of Inorganic Chemistry SB RASAcademician Lavrentyev Ave.3Novosibirsk 630090Russia Kutateladze Institute of Thermophysics SB RASAcademician Lavrentyev Ave.1Novosibirsk 630090Russia

It is known that simple adding of wood allows one to accelerate the ignition of powder mixtures compared to the situation when pure coal is *** study focuses on testing the hypothesis about the effect of co-milling coal and wood on their co-firing:is the case of composite powdered fuels should ensure the maximum possible efficiency of heat and mass transfer?Firstly,we will show that co-milling of coal and wood leads not independent size reduction of two materials but gives composite powder-coal-covered *** the composite fuel further reduction of the ignition delay time of air suspension and reduction of the limit volume concentration required for flame propagation have *** synergy also manifests in *** we propose a simple method for analyzing the mass loss *** any coal-to-wood sawdust ratio,combustion of the composites and mixtures both can be viewed as a weighted sum of the curves of individual *** only in the case of composites calculated sawdust content is higher than the actual one:the mass loss is redistributed towards the stage occurring at lower temperatures due to geometry of wood/coal contact.

关键词： Co-firing Co-milling Pine sawdust Coal TGA synergy

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Thermogravimetric and synergy Analysis of the Co-Pyrolysis of Coconut Husk and Laminated Plastic Packaging for Biofuel Production

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Energy Engineering 2022年第2期119卷 555-567页

作者： Joselito Olalo Mechanical Engineering Department Camarines Norte State CollegeDaet Camarines Norte4600Philippines

Unlike plastic,biomass can also be converted and produce high quality of ***-pyrolysis of coconut husk(CH)and laminated plastic packaging(LPP)were done in this *** between these two feedstock was calculated by using thermogravimetric(TGA)and derivative thermogravimetry(DTG)*** activation energies of the reactions in the co-pyrolysis of CH and LPP were evaluated using the Coats-Redfern *** showed an activation energy ranging from 8 to 37 kJ/mol in the different percentage composition of the ***,thermal degradation happens in two-stages in the copyrolysis of CH and LPP,in which CH degrades at the temperature range of 210℃ to 390℃ while LPP degrades in temperatures 400℃-600℃.Co-pyrolysis of CH and LPP can be an alternative for biofuel production and can also reduce the waste problems in the community.

关键词： Coconut husk laminated plastic packaging co-pyrolysis synergy

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synergy between Cucumber Mosaic Virus and Zucchini Yellow Mosaic Virus on Cucurbitaceae Hosts Tested by Real-time Reverse Transcription-Polymerase Chain Reaction

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Acta Biochimica et Biophysica Sinica 2007年第6期39卷 431-437页

作者： Rong ZENG~(1,2#), Qiansheng LIAO~(2#), Junli FENG~2, Dingjun LI~1, and Jishuang CHEN~(2*) 1 College of Bio-Safety Science Technology, Hunan Agricultural University, Changsha 410128, China, 2 Institute of Bioengineering, Zhejiang Sci-Teeh University, Hangzhou 310018, China College of Bio-Safety Science Technology Human Agricultural UniversityChangsha 410128 China Institute of Bioengineering Zhejiang Sci-Tech UniversityHangzhou 310018 China

Cucumber mosaic virus (CMV) and zucchini yellow mosaic virus (ZYMV) are two principal viruses infecting cucurbitaceous crops, and their synergy has been repeatedly observed. In our present work, a real-time reverse transcription-polymerase chain reaction procedure was established to study the accumulation kinetics of these two viruses in single and combined infections at the molecular level. The accumulations of open reading frames (ORFs) for 1a, 2a, 3a and coat protein (CP) of CMV and CP of ZYMV were tested. In the single infection, CMV-Fny ORFs accumulated to their maxima in cucumber or bottle gourd at 14 d post-inoculation (dpi), and gradually declined thereafter. ZYMV-SD CP ORF reached maximal accumulation at 14 and 28 dpi on cucumber and bottle gourd, respectively. However, when coinfected with CMV-Fny and ZYMV-SD, the maximal accumulation levels of all viral ORFs were delayed. CMV-Fny ORFs reached their maxima at 21 dpi on both hosts, and ZYMV-SD CP ORF reached maximal accumulation at 21 and 28 dpi on cucumber and bottle gourd, respectively. Generally, the accumulation levels of CMV-Fny ORFs in the co-infection were higher than those in the single infection, whereas the accumulation of ZYMV-SD CP ORF showed a reverse result.

关键词： cucumber mosaic virus genornic RNA real-time RT-PCR relative quantification synergy zucchini yellow mosaic virus

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synergy between the Convention on Biological Diversity and the UNFCCC in China

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Advances in Climate Change Research 2021年第2期12卷 287-295页

作者： HU Yue CHEN Ye WU Shu-Hong School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing100083China Asia Pacific School of Business Administration Jilin University of Finance and EconomicsJilin130117China

The Convention on Biological Diversity and the United Nations Framework Convention on Climate Change are the two most important environmental conventions for biodiversity conservation and climate change *** conventions have carried out a variety of work and established a joint working group to promote *** study reviews the cooperation process between both conventions,and identifies the gaps in the synergistic mechanism by analyzing the status of implementation in *** following problems in China were found to be associated with convention implementation:1)shortage of coordination among implementing organization;2)the existing strategic plans lack planning for synergistic implementation;3)the monitoring system lacks coordination management,thus making the sharing of monitoring results among each unit challenging;and 4)information sharing from partner ministries is *** the status of China's implementation and the experience of other contracting parties,the following strategies are proposed:1)a synergistic implementation mechanism should be established at the national level;2)a national strategic plan should be developed for synergistic implementation;3)a monitoring system and management mechanism should be developed that comprehensively consider the monitoring indicators of each convention;and 4)an implementation information-sharing platform should be built.

关键词： synergy CBD UNFCCC Climate change Biodiversity conservation

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synergy methodology for multi-objective operational control of reservoirs in Yellow River basin

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Science China(Technological Sciences) 2004年第Z1期47卷 212-223页

作者： HUANG Qiang CHANG Jianxia WANG Yimin PENG Shaoming Hydraulic and Hydrauelectric Institute Xi'an University of Technology Xi'an 710048 China Hydraulic and Hydrauelectric Institute Xi'an University of Technology Xi'an 710048 China Hydraulic and Hydrauelectric Institute Xi'an University of Technology Xi'an 710048 China Hydraulic and Hydrauelectric Institute Xi'an University of Technology Xi'an 710048 China

This paper presents an application of synergy methodology to a multi- objective operational control of reservoirs. This methodology enables a comprehensive consideration of multi-objectives which may be conflicting and non commensurate such as municipal and industrial water supply, flood protection, and hydroelectric power generation etc. On the basis of the synergy theory, a harmony degree model of sub- system was established to describe the coordination magnitude. Combined with information entropy, a harmony degree entropy was proposed to determine the water resources evolvement direction. While implementing the control, an initial scheme for reservoir operation was obtained from simulation first, then control was carried out according to the harmony degree and harmony degree entropy by applying synergy theory. The application of the methodology to reservoir system in the Yellow River was reported in this paper through a case study.

关键词： reservoir system, operational control, synergy theory, harmony degree, harmony degree entropy.

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A strategy for designing stable nanocrystalline alloys by thermo-kinetic synergy

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Journal of Materials Science & Technology 2020年第8期36卷 21-31页

作者： H.R.Peng B.S Liu F.Liu State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072China School of Materials and Chemical Engineering Xi’an Technological UniversityXi’an710021China Analytical and Testing Center Northwestern Polytechnical UniversityXi’an710072China

Aiming to design stable nanocrystalline(NC)materials,so far,it has been proposed to construct nanostructure stability maps in terms of thermodynamic parameters,while kinetic stabilization has seldom been considered,despite the synergy of thermodynamics and ***,the thermodynamically stabilized NC materials may be easily subjected to grain growth at high temperatures due to the weakly kinetic *** from the thermo-kinetic synergy,a stabilization criterion is proposed as a function of intrinsic solute parameters(*** activation energy for bulk diffusion and the segregation enthalpy),intrinsic solvent parameters(*** intrinsic activation energy for GB migration and the GB energy)and processing parameters(*** grain size,the temperature and the solute concentration).Using first-principles calculations for a series of combinations between fifty-one substitutional alloying atoms as solute atoms and Fe atom as fixed solvent atom,it is shown that the thermal stability neither simply increases with increasing the segregation enthalpy as expected by thermodynamic stabilization,nor monotonically increases with increasing the activation energy for bulk diffusion as described by kinetic *** combination of thermodynamic and kinetic contributions,the current stabilization criterion evaluates quantitatively the thermal stability,thus permitting convenient comparisons among NC materials involved by various combinations of the solute atoms,the solvent atoms,or the processing *** of this thermo-kinetic stabilization criterion has been tested by current experiment results of Fe-Y alloy and previously published data of Fe-Ni,Fe-Cr,Fe-Zr and Fe-Ag alloys,etc.,which opens a new window for designing NC materials with sufficiently high thermal stability and sufficiently small grain size.

关键词： Thermo-kinetic synergy Criterion Thermal stability Nanocrystalline materials

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Characterizing the catalyst fluidization with field synergy to improve the amine absorption for CO2 capture

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Chinese Journal of Chemical Engineering 2019年第7期27卷 1608-1617页

作者： Yunsong Yu Chen Zhang Zaoxiao Zhang Geoff Wang School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong UniversityXi’an 710049China School of Chemical Engineering The University of QueenslandSt LuciaQLD 4072Australia

There are great interests to capture the CO2 to control the greenhouse gas *** absorption of CO2 is being taken as an effective way to capture CO2 in ***,the amine absorption of CO2 is cost-ineffective due to great energy consumption and solution *** order to reduce the capture cost,catalyst fluidization is proposed here to intensify the mass transfer and heat *** fluidization with field synergy and DFT model is developed by incorporating the effects of catalyst reaction kinetics,drag force and multi-field into the mass transfer,heat transfer,fluid flow and catalyst *** with an improved distributor are performed well to validate the *** reaction kinetics is determined by the DFT simulation and *** mass transfer coefficient in the fluidized reactor is identified as 17%higher than the conventional packed *** the field synergy of catalyst fluidization,the energy consumption for CO2 desorption is reduced by 9%.Stepwise operation and inclination reactor are used to improve catalyst fluidization process.

关键词： CO2 capture Catalyst fluidization Mass transfer DFT Energy consumption Field synergy

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Combustion characteristics and synergy behaviors of biomass and coal blending in oxy-fuel conditions: A single particle co-combustion method

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Science China(Technological Sciences) 2018年第11期61卷 1723-1731页

作者： ZHANG Rui LEI Kai YE BuQing CAO Jin LIU Dong MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power Engineering Nanjing University of Science and Technology Advanced Combustion Laboratory School of Energy and Power Engineering Nanjing University of Science and Technology

Co-combustion biomass and coal can effectively reduce the emission of CO_2. O_2/H_2O combustion is regarded as the next generation of oxy-fuel combustion technology. By co-combustion biomass and coal under oxy-fuel condition, the emission of CO_2 can be minimized. This work investigates the co-combustion characteristics of single particles from pine sawdust(PS) and bituminous coal(BC) in O_2/N2, O_2/CO_2 and O_2/H_2O atmospheres at different O_2 mole fractions(21%, 30% and 40%). The experiments were carried out in a drop tube furnace(DTF), and a high speed camera was used to record the combustion process of fuel particles. The combustion temperature was measured by a two-color method. The experiments in O_2/N2 atmosphere indicate that the particles from pine sawdust and bituminous coal all ignite homogeneously. After replacing H_2O for N2, the combustion temperature of volatiles of blended fuel particles decreases, while the combustion temperature of char increases. The ignition delay time in O_2/H_2O atmosphere is shorter than that in O_2/N2 or O_2/CO_2 atmosphere. The combustion temperature of volatiles of blended fuel particles increases as the mass fraction of bituminous coal increases, while the combustion temperature of char of blended fuel particles is higher than that of biomass or bituminous coal. The ignition delay time of blended fuel particles increases with the increasing mass fraction of bituminous coal, and the experimental ignition delay time of blend fuel particles is shorter than the theoretical one. These reveal a synergy during co-combustion process of pine sawdust and bituminous coal.

关键词： co-combustion O2/H2O single particle biomass and coal synergy

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