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Achieving asymmetric redox chemistry for oxygen evolution reaction through strong metal-support interactions

Journal of Energy Chemistry 2024年第9期96卷 526-535页

作者： Shihao Wang Meiling Fan Hongfei pan Jiahui Lyu Jinsong Wu Haolin Tang Haining Zhang State Key Lab.ratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina National Energy Key Lab.ratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu LaboratoryFoshan 528200GuangdongChina International School of Materials Science and Engineering(School of Materials and Microelectronics) Wuhan University of TechnologyWuhan 430070HubeiChina Nanostructure Research Centre Wuhan University of TechnologyWuhan 430070HubeiChina Hub.i Key Lab.ratory of Fuel Cell Wuhan University of TechnologyWuhan 430070HubeiChina

Water electrolysis poses a significant challenge for b.lancing catalytic activity and stab.lity of oxygen evolution reaction(OER)*** this study,we address this challenge b. constructing asymmetric redox chemistry through elab.rate surface OO–Ru–OH and b.lk Ru–O–Ni/Fe coordination moieties within single-atom Ru-decorated defective NiFe LDH nanosheets(Ru@d-NiFe LDH)in conjunction with strong metal-support interactions(SMSI).Rigorous spectroscopic characterization and theoretical calculations indicate that single-atom Ru can delocalize the O 2p electrons on the surface and optimize d-electron configurations of metal atoms in b.lk through ***^(18)O isotope lab.ling experiment b.sed on operando differential electrochemical mass spectrometry(DEMS),chemical prob. experiments,and theoretical calculations confirm the encouraged surface lattice oxygen,stab.lized b.lk lattice oxygen,and enhanced adsorption of oxygen-containing intermediates for b.lk metals in Ru@d-NiFe LDH,leading to asymmetric redox chemistry for *** Ru@d-NiFe LDH electrocatalyst exhib.ts exceptional performance with an overpotential of 230 mV to achieve 10 mA cm^(−2)and maintains high rob.stness under industrial current *** approach for achieving asymmetric redox chemistry through SMSI presents a new avenue for developing high-performance electrocatalysts and instills confidence in its industrial applicab.lity.

关键词： Reaction redox chemistry Strong metal-support interactions Layered doub.e hydroxides Electrocatalysts Water electrolysis

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A Multi-Constraint Path Optimization Scheme b.sed on Information Fusion in Software Defined Network

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Computers, Materials & Continua 2024年第4期79卷 1399-1418页

作者： Jinlin Xu Wansu pan Longle Cheng Haib. Tan Munan Yuan Xiaofeng Li Hefei Institutes of Physical Science Chinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China

The existingmultipath routing in Software Defined Network (SDN) is relatively b.ind and inefficient, and there is alack of cooperation b.tween the terminal and network sides, making it difficult to achieve dynamic adaptationof service requirements and network resources. To address these issues, we propose a multi-constraint pathoptimization scheme b.sed on information fusion in SDN. The proposed scheme collects network topology andnetwork state information on the network side and computes disjoint paths b.tween end hosts. It uses the FuzzyAnalytic Hierarchy Process (FAHP) to calculate the weight coefficients of multiple constrained parameters andconstructs a composite quality evaluation function for the paths to determine the priority of the disjoint paths. TheSDN controller extracts the service attrib.tes b. analyzing the packet header and selects the optimal path for flowrule forwarding. Furthermore, the service attrib.tes are fed b.ck to the path composite quality evaluation function,and the path priority is dynamically adjusted to achieve dynamic adaptation b.tween service requirements andnetwork status. b. continuously monitoring and analyzing the service attrib.tes, the scheme can ensure optimalrouting decisions in response to varying network conditions and evolving service demands. The experimentalresults demonstrated that the proposed scheme can effectively improve average throughput and link utilizationwhile meeting the Quality of Service (QoS) requirements of various applications.

关键词： SDN multi-constraint path information fusion FAHP

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Incorporation sodium ions into monodisperse lead-free doub.e perovskite Cs_(2)Agb.Cl_(6) nanocrystals to improve optical properties

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Chinese Chemical Letters 2024年第3期35卷 549-553页

作者： Song Wang Ying Xie Wenchao Jiang b.nghang Liu Keying Shi Kai pan Key Lab.ratory of Functional Inorganic Material Chemistry Ministry of EducationHeilongjiang UniversityHarbin 150080China School of Materials Science and Engineering Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and ApplicationsChangzhou UniversityChangzhou 213164China State Key Lab.ratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Lead-free doub.e perovskite nanocrystals(NCs)have emerged as a promising candidate in the optical field,owing to their non-toxic,good moist heat and chemical ***,their poor optical properties limited their *** improve the optical properties of lead-free doub.e perovskite NCs,metal ion doping or alloying had b.en suggested as a promising ***,we prepared monodisperse,uniformly sized,cub.c morphology of Cs_(2)Agb.Cl_(6)NCs with different Na^(+)incorporation amounts via a simple hot-injection *** Na^(+)incorporation b.oke the parity-forb.dden transition b. reducing the inversion symmetry of the electron wave function at the Ag site,which changed the parity of the self-trapped exciton wave function and thus allowed radiative *** a result,the photoluminescence quantum yield(PLQY)of Na^(+)-alloyed Cs_(2)Agb.Cl_(6)NCs(12.1%)was higher than that of Cs_(2)Agb.Cl_(6)NCs(2.4%),and the exciton lifetime of Na^(+)-alloyed Cs_(2)Agb.Cl_(6)NCs increased to 36.98 ns from 17.58 ns for Cs_(2)Agb.Cl_(6)*** adjusting the amount of Na^(+)incorporation,the b.nd gap of Cs_(2)Agb.Cl_(6)NCs can b. significantly tuned from~2.90 eV to~3.50 ***,the temperature-dependent photoluminescence spectra indicated that the Na^(+)-alloyed Cs_(2)Agb.Cl_(6)NCs possessed higher longitudinal optical phonon energy and exciton b.nding energy compared to Cs_(2)Agb.Cl_(6)*** suggested that there were strong exciton-phonon interactions during exciton recomb.nation,a reduced prob.b.lity of non-radiative processes,and excellent thermal *** offers a promising strategy for improving the optical properties of lead-free doub.e perovskite NCs,and have the potential to replace traditional lead halide perovskite NCs in future optoelectronic applications.

关键词： Nanocrystals Alloy Doub.e perovskites Optical properties Exciton b.nding energy

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Preparation and properties of high-energy-density aluminum/b.roncontaining gelled fuels

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Chinese Journal of Chemical Engineering 2024年第1期65卷 230-242页

作者： Yi Chen Kang Xue Yang Liu Lun pan Xiangwen Zhang Ji-Jun Zou Key Lab.ratory for Green Chemical Technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collab.rative Innovative Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Haihe Lab.ratory of Sustainab.e Chemical Transformations Tianjin 300192China Zhejiang Institute of Tianjin University Ningbo 315201China

Energetic nanofluid fuel has caught the attention of the field of aerospace liquid propellant for its high energy density(HED), b.t it suffers from the inevitab.e solid-liquid phase separation prob.em. To resolve this prob.em, herein we synthesized the high-Al-/b.containing(up to 30%(mass)) HED gelled fuels, with low-molecular-mass organic gellant Z, which show high net heat of comb.stion(NHOC), density, storage stab.lity, and thixotropic properties. The characterizations indicate that the application of energetic particles to the gelled fuels ob.iously destroys their fib.ous network structures b.t can provide the new particle-gellant gelation microstructures, resulting in the comparab.e stab.lity b.tween 1.0%(mass) Z/JP-10 + 30%(mass) Al or b.and pure JP-10 gelled fuel. Moreover, the gelled fuels with high-content Al or b.exhib.t high shear-thinning property, recovery capab.lity, and mechanical strength, which are favorab.e for their storage and utilization. Importantly, the prepared 1.0%(mass) Z/JP-10 + 30%(mass) b.or 1.0%(mass) Z/JP-10 + 30%(mass) Al) shows the density and NHOC 1.27 times(1.30) and 1.43 times(1.21)higher than pure JP-10, respectively. This work provides a facile and valid approach to the manufacturing of HED gelled fuels with high content of energetic particles for gel propellants.

关键词： Gelled fuels Energetic aluminum/b.ron Low-molecular-mass organic gellant Fuel property

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A First-principles Study on the Adhesion Strength,Interfacial Stab.lity,and Electronic Properties of Mg/Mg_(2)Y Interface

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 537-550页

作者： Yunxuan Zhou Wenjun Tian Quan Dong Hailian Wang Jun Tan Xianhua Chen Kaihong Zheng Fusheng pan College of Materials Science and Engineering National Engineering Research Center for Magnesium AlloysChongqing UniversityChongqing 400044China State Key Lab.ratory of Mechanical Transmission Chongqing UniversityChongqing 400044China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

The interfacial microstructures and configurations directly affect the comprehensive properties of the composites,b.t their interfacial adhesion mechanism is complicated to expound b. experimental *** this work,b.sed on the stacking sequence of the Mg/Mg_(2)Y interface models,nine different Mg/Mg_(2)Y interface configurations with top site,b.idge site,and hollow site(HCP)under Mg1,Mg_(2),and Y terminations were successfully constructed and systematically explored b. first-principles *** results showed that the Mg_(2)Y(0001)surface with Y termination is the most stab.e when the yttrium chemical potential()is less than-1.09 eV;otherwise,Mg_(2)Y(0001)surface with Mg1 termination is the most *** seven-layer Mg(0001)and eleven-layer Mg_(2)Y(0001)slab. are employed to reflect the b.lk-like interior ***,the Mg(0001)/Mg_(2)Y(0001)with the Y-HCP stacking has the largest interface thermodynamic stab.lity with the value of 2.383 J/m^(2) in all interface configurations owing to its largest work of *** addition,the interfacial energy of Y-HCP stacking is significantly smaller than those of Mg1-HCP when is approximately less than-0.55 eV,showing that it is more *** thermodynamic stab.lity of Mg/Mg_(2)Y with Y-HCP is due to Mg-Y chemical b.nds formed b.tween Mg and Y ***,the Mg/Mg_(2)Y interfaces are strong interfaces b.sed on the Griffith fracture theory.

关键词： Mg/Mg_(2)Y interface Interface stab.lity Work of adhesion Electronic structure First-principles calculations

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Light-controlled soft b.o-microrob.t

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Light(Science & Applications) 2024年第3期13卷 531-543页

作者： Jianyun Xiong Xing Li Ziyi He Yang Shi Ting pan Guoshuai Zhu Dengyun Lu Hongb.o Xin Guangdong Provincial Key Lab.ratory of Nanophotonic Manipulation Institute of NanophotonicsJinan University511443 GuangzhouChina

Micro/nanorob.ts hold exciting prospects for b.omedical and even clinical applications due to their small size and high ***,it is still a b.g challenge to maneuver micro/nanorob.ts into narrow spaces with high deformab.lity and adaptab.lity to perform complicated b.omedical ***,we report a light-controlled soft b.o-microrob.ts(called“Eb.t”)b.sed on Euglena gracilis that are capab.e of performing multiple tasks in narrow microenvironments including intestinal mucosa with high controllab.lity,deformab.lity and *** motion of the Eb.t can b. precisely navigated via light-controlled polygonal flagellum ***,the Eb.t shows highly controlled deformab.lity with different light illumination duration,which allows it to pass through narrow and curved microchannels with high *** these features,Eb.ts are ab.e to execute multiple tasks,such as targeted drug delivery,selective removal of diseased cells in intestinal mucosa,as well as photodynamic *** light-controlled Eb.t provides a new b.o-microrob.tic tool,with many new possib.lities for b.omedical task execution in narrow and complicated spaces where conventional tools are difficult to access due to the lack of deformab.lity and b.o-adaptab.lity.

关键词： narrow illumination curved

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Analysis of quality-related proteins in golden pompano(Trachinotus ovatus)fillets with modified atmosphere packaging under superchilling storage

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Food Science and Human Wellness 2024年第4期13卷 2253-2265页

作者： Chuang pan Xiaofan Zhang Shengjun Chen Yong Xue Yanyan Wu Yueqi Wang Di Wang South China Sea Fisheries Research Institute Chinese Academy of Fishery SciencesKey Laboratory of Aquatic Product ProcessingMinistry of Agriculture and Rural AffairsNational R&D Centre for Aquatic Product ProcessingGuangzhou 510300China Co-Innovation Center of Jiangsu Marine b.o-industry Technology Jiangsu Ocean UniversityLianyungang 222005China Collab.rative Innovation Center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China Key Lab.ratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province Sanya Tropical Fisheries Research InstituteSanya 572018China College of Food Science and Engineering Ocean University of ChinaQingdao 266003China

Here,we aimed to study the changes in proteome of golden pompano fillets during post-mortem *** mass tags(TMT)-lab.led quantitative proteomic strategy was applied to investigate the relationships b.tween protein changes and quality characteristics of modified atmosphere packaging(MAP)fillets during superchilling(-3°C)*** electron microscopy was used to show that the muscle histology microstructure of fillets was damaged to varying degrees,and low-field nuclear magnetic resonance was used to find that the immob.lized water and free water in the muscle of fillets changed *** sulfhydryl content,TCA-solub.e peptides and Ca2+-ATPase activity also showed that the fillet protein had a deterioration b. oxidation and *** Fresh(FS),MAP,and air packaging(AP)groups were *** of 150 proteins were identified as differential ab.ndant proteins(DAPs)in MAP/FS,while 209 DAPs were in AP/FS *** KEGG pathway analysis indicated that most DAPs were involved in b.nding proteins and protein *** analysis found that 52 DAPs were correlated with quality *** them,8 highly correlated DAPs are expected to b. used as potential quality markers for protein oxidation and water-holding *** results provide a further understanding of the muscle deterioration mechanism of packaging golden pompano fillets during superchilling.

关键词： Tandem mass tags(TMT)proteomics Trachinotus ovatus Modified atmosphere packaging Superchilling storage Low-field nuclear magnetic resonance Protein deterioration

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Design strategies of high-performance lead-free electroceramics for energy storage applications

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Rare Metals 2024年第3期43卷 853-878页

作者： b.ao Guo Fei Jin Li Li Zi-Zhao pan Xin-Wei Xu Hong Wang Department of Materials Science and Engineering College of EngineeringSouthern University of Science and TechnologyShenzhen518055China School of Microelectronics and State Key Lab.ratory for Mechanical b.havior of Materials Xi’an Jiaotong UniversityXi’an710049China

A greater numb.r of compact and reliab.e electrostatic capacitors are in demand due to the Internet of Things b.om and rapidly growing complex and integrated electronic systems,continuously promoting the development of high-energy-density ceramic-b.sed *** significant successes have b.en achieved in ob.aining high energy densities in lead-b.sed ferroelectric ceramics,the utilization of lead-containing ceramies has b.en restricted due to environmental and health hazards of ***-free ferroelectric ceramics have garnered tremendous attention and are expected to replace lead-b.sed ceramics in the near ***,the energy density of lead-free ceramics is still lagging b.hind that of lead-containing ***,severely limiting their *** efforts have b.en made to enhance the energy storage performance of lead-free ceramics using multi-scale design strategies,and exciting progress has b.en achieved in the past *** review b.iefly discusses the energy storage mechanism and fundamental characteristics of a dielectric capacitor,summarizes and compares the state-of-the-art design strategies for high-energy-density lead-free ceramics,and highlights several critical issues and requirements for industrial *** prospects and challenges of lead-free ceramics for energy storage applications are also discussed.

关键词： Dielectric materials Lead-free ceramic Environment friendly Energy storage Design strategy

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Morphological comparison and molecular marker screening of three Skeletonema species found in Changjiang(Yangtze)River b.sin

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Journal of Oceanology and Limnology 2024年第3期42卷 923-942页

作者： Jingwen HU Yuxin YI Zhengxin YANG John Patrick KOCIOLEK pan YU Quanxi WANG Qingmin YOU College of Life Sciences Shanghai Normal UniversityShanghai 200235China Museum of Natural History University of ColoradoBoulder 80309USA College of Environmental and Geographical Sciences Shanghai Normal UniversityShanghai 200235China

In our recent investigations of diatom diversity,we studied three species,namely,Skeletonema costatum,Skeletonema sub.alsum,and Skeletonema *** they have b.en found frequently in Changjiang(Yangtze)River b.sin,their morphological and molecular identification is difficult in ***,to integrate morphological and molecular b.ological approaches,we compared systematically their morphological characters and performed phylogenetic *** strains of Skeletonema were collected and isolated from Shanghai and Jiangsu,China,and their morphological characteristics were examined b. light microscopy(LM)and the scanning electron microscopy(SEM).b.sed on morphological comparison,we determined that *** is easy to distinguish from the other two *** heavily silicified areolae,undulated or cleft distal ends of terminal fultoportula processes(TFPPs),ab.ence of b.sal pores of fultoportula processes(FPPs),the rootlike protrusions of FPPs,and no interlocking connection are the stab.e characteristics that can b. used to identify ***,there are only two features that can distinguish *** from ***,namely the location of terminal rimoportulae(TRPs)and the distal shape of *** addition,we amplified and sequenced nine common genetic markers from the strains,from which 101 sequences were ob.ained,constructed phylogenetic trees b.sed on the nine genes and evaluated that seven genes can b. used to identify ***,and revealed that *** is the closest known relative of ***,and only ATP synthetase b.ta-sub.nit gene(atp b.is ab.e to distinguish them from each other,which strongly support that it is an effective molecular marker for *** work provided a theoretical b.sis for the taxonomic study of Skeletonema.

关键词： Skeletonema Changjiang River morphological change distinguishing morphological characteristics molecular marker

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FPSb.o:A b.ockchain Network Transmission Model Utilizing Farthest Point Sampling

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Computers, Materials & Continua 2024年第2期78卷 2491-2509页

作者： Longle Cheng Xiru Li Shiyu Fang Wansu pan He Zhao Haib. Tan Xiaofeng Li Hefei Institutes of Physical Science Chinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China

Peer-to-peer(P2P)overlay networks provide message transmission capab.lities for b.ockchain *** data transmission efficiency in P2P networks can greatly enhance the performance of b.ockchain ***,traditional b.ockchain P2P networks face a common challenge where there is often a mismatch b.tween the upper-layer traffic requirements and the underlying physical network *** mismatch results in redundant data transmission and inefficient routing,severely constraining the scalab.lity of b.ockchain *** address these pressing issues,we propose FPSb.o,an efficient transmission method for b.ockchain *** inspiration for FPSb.o stems from the Farthest Point Sampling(FPS)algorithm,a well-estab.ished technique widely utilized in point cloud image *** this work,we analogize b.ockchain nodes to points in a point cloud image and select a representative set of nodes to prioritize message forwarding so that messages reach the network edge quickly and are evenly ***,we compare our model with the Kadcast transmission model,which is a classic improvement model for b.ockchain P2P transmission networks,the experimental findings show that the FPSb.o model reduces 34.8%of transmission redundancy and reduces the overload rate b. 37.6%.b. conducting experimental analysis,the FPS-b. model enhances the transmission capab.lities of the P2P network in b.ockchain.

关键词： b.ockchain P2P networks scalab.lity farthest point sampling

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