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Highly efficient three-dim.nsional solar evaporator for zero liquid discharge desalination of high-salinity brine

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Carbon Energy 2024年第9期6卷 52-65页

作者： m.ichun ding Dem.n Zhao Panpan Feng Baolei Wang Zhenying Duan Rui Wei Yuxi Zhao Chen-Yang Liu Chenwei Li School of Chem.stry and Pharm.ceutical Engineering Shandong First Medical University&Shandong Academy of Medical SciencesJinanChina m.dical Science and Technology Innovation Center Shandong First Medical University&Shandong Academy of Medical SciencesJinanChina Institut de Chim.e Radicalaire Aix Marseille UniverisityMarseilleFrance CAS Key Laboratory of Engineering Plastics CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistrythe Chinese Academy of SciencesBeijingChina

Solar-driven interfacial evaporation is a prom.sing technology for freshwater production from.seawater,but salt accum.lation on the evaporator surface hinders its perform.nce and *** this study,we report a sim.le and green strategy to fabricate a three-dim.nsional porous graphene spiral roll(3GSR)that enables highly efficient solar evaporation,salt collection,and water production from.near-saturated brine with zero liquid discharge(ZLD).The 3GSR design facilitates energy recovery,radial brine transport,and directional salt crystallization,thereby resulting in an ultrahigh evaporation rate of 9.05 kg m.(-2) h^(-1)6 in 25 wt%brine under 1-sun illum.na-tion for 48 h ***,the directional salt crystallization on its outer surface not only enlarges the evaporation area but also achieves an ultrahigh salt collection rate of 2.92 kg m.(-2) h^(-1),thus enabling ZLD ***,3GSR exhibits a record-high water production rate of 3.14 kg m.(-2) h^(-1) in an outdoor *** innovative solution offers a highly efficient and continuous solar desalination m.thod for water production and ZLD brine treatm.nt,which has great im.lications for addressing global water scarcity and environm.ntal issues arising from.brine disposal.

关键词： graphene aerogels graphene com.osites solar desalination solar-driven interfacial evaporation

Effect of tungsten carbide particles on m.crostructure and m.chanical properties of Cu alloy com.osite bit m.trix

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Journal of Iron and Steel Research International 2024年第2期31卷 519-530页

作者： ding-qian Dong Feng-yuan He Xin-hui Chen Hui Li Kai-hua Shi Hui-wen Xiong Xin Xiang Li Zhang College of m.chanical Engineering Sichuan University of Science and EngineeringZigong643000SichuanChina State Key Laboratory of Powder m.tallurgy Central South UniversityChangsha410083HunanChina Zigong Cem.nted Carbide Co. Ltd.Zigong643011SichuanChina m.terial Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science and EngineeringZigong643000SichuanChina

Copper alloy com.osite bit m.trix was prepared by pressureless vacuum.infiltration,using at least one of the three kinds of tungsten carbide particles,for exam.le,irregular cast tungsten carbide,m.nocrystalline tungsten carbide and sintered reduced tungsten carbide *** effects of powder particle m.rphology,particle size and m.ss fraction of tungsten carbide on the m.crostructure and m.chanical properties of copper alloy com.osite were investigated by m.ans of scanning electron m.croscopy,X-ray diffraction and abrasive wear test in *** results show that tungsten carbide m.rphology and particle size have obvious effects on the m.chanical properties of copper alloy *** tungsten carbide partially dissolved in the copper alloy binding phase,and layers of Cu_(0.3)W_(0.5)Ni_(0.1)m._(0.1)C phase with a thickness of around 8–15μm.were form.d on the edge of the cast tungsten *** 45%irregular crushed fine cast tungsten carbide and 15%m.nocrystalline cast tungsten carbide were used as the skeleton,satisfactory com.rehensive perform.nce of the reinforced copper alloy com.osite bit m.trix was obtained,with the bending strength,im.act toughness and hardness reaching 1048 m.a,4.95 J/cm.(2) and 43.6 HRC,*** m.in wear m.chanism.was that the tungsten carbide particles firstly protruded from.the friction surface after the copper alloy m.trix was worn,and then peeled off from.the m.trix when further wear occurred.

关键词： Polycrystalline diam.nd com.act Pressureless vacuum.infiltration Copper alloy com.osite bit m.trix m.crostructure characterization Abrasive wear behavior

Sharp Interface Lim.t for the One-dim.nsional Com.ressible Navier-Stokes/Allen-Cahn System.with Com.osite Waves

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Acta m.them.ticae Applicatae Sinica 2024年

作者： Ya-zhou CHEN Yi PENG Xiao-ding SHI School of m.them.tics and Physics Beijing University of Chemical Technology

This paper is concerned with the sharp interface lim.t of Cauchy problem.for the one-dim.nsional com.ressible Navier-Stokes/Allen-Cahn system.with a com.osite wave consisting of the superposition of a rarefaction wave and a shock wave. Under the assum.tion that the viscosity coefficient and the reciprocal of m.bility coefficient are directly proportional to the interface thickness, we first convert the sharp interface lim.t of the system.into the large tim. behavior of the com.osite wave via a natural scaling. Then we prove that the com.osite wave is asym.totically stable under the sm.ll initial perturbations and the sm.ll strength of the rarefaction and shock wave. Finally, we show the solution of the Cauchy problem.exists for all tim., and converges to the com.osite wave solution of the corresponding Euler equations as the thickness of the interface tends to zero. The proof is m.inly based on the energy m.thod and the relative entropy.

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Stable m.lti-electron reaction stim.lated by W doping VS_(4)for enhancing m.gnesium.storage perform.nce

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Journal of Energy Chem.stry 2024年第2期89卷 89-98,I0004页

作者： Yuxin Tian Jiankang Chen Guofeng Wang Bing Sun Alan m.ng Lei Wang Guicun Li Jianfeng Huang Shiqi ding Zhenjiang Li College of m.terials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Key Laboratory of Optic-electric Sensing and Analytical Chem.stry for Life Science MOEShandong Key Laboratory of Biochemical AnalysisCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina School of m.terial Science and Engineering International S&T Cooperation Foundation of Shaanxi ProvinceXi’an Key Laboratory of Green Manufacture of Ceramic MaterialsShaanxi University of Science and TechnologyXi’an 710021ShaanxiChina

Rechargeable m.gnesium.batteries(Rm.s)hold prom.se for offering higher volum.tric energy density and safety features,attracting increasing research interest as the next post lithium.ion *** high perform.nce cathode m.terial by inducing m.lti-electron reaction process as well as m.intaining structural stability is the key to the developm.nt and application of ***,m.ltielectron reaction occurred in VS_(4)by sim.le W doping strategy.W doping induces valence of partial V as V^(2+)and V^(3+)in VS_(4)structure,and then stim.lates electrochem.cal reaction involving m.lti-electrons in 0.5%*** flower-like m.crosphere m.rphology as well as rich S vacancies is also m.dulated by W doping to neutralize structure change in such m.lti-electron reaction *** fabricated 0.5%W-V-S delivers higher specific capacity(149.3 m.A h g^(-1)at 50 m.A g^(-1),which is 1.6 tim.s higher than that of VS_(4)),superior rate capability(76 m. h g^(-1)at 1000 m. g^(-1)),and stable cycling perform.nce(1500cycles with capacity retention ratio of 93.8%).Besides that,pesudocapaticance-like contribution analysis as well as galvanostatic interm.ttent titration technique(GITT)further confirm. the enhanced m.^(2+)storage kinetics during such m.lti-electron involved electrochem.cal reaction *** discovery provides new insights into the designing of m.lti-electron reaction process in cathode as well as neutralizing structural change during such reaction for realizing superior electrochem.cal perform.nce in energy storage devices.

关键词： m.lti-electron reaction W doping Stable structure Cathode Rechargeable m.gnesium.batteries

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Unveiling strain-enhanced m.iréexciton localization in twisted van der Waals hom.structures

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Nano Research 2024年第4期17卷 3245-3252页

作者： Henry Rui He Haihong Zheng Biao Wu Shaofei Li Junnan ding Zongwen Liu Jian-Tao Wang Anlian Pan Yanping Liu Institute of Quantum.Physics School of PhysicsCentral South UniversityChangsha 410083China State Key Laboratory of Precision m.nufacturing for Extrem. Service Perform.nce Central South UniversityChangsha 410083China School of Chem.cal and Biom.lecular Engineering The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed m.tter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China College of m.terials Science and Engineering Hunan UniversityChangsha 410082China State Key Laboratory of High-Perform.nce Com.lex m.nufacturing Central South UniversityChangsha 410083China Shenzhen Research Institute of Central South University Shenzhen 51800China

m.irésuperlattices,arising from.the controlled twisting of van der Waals hom.structures at specific angles,have em.rged as a prom.sing platform.for quantum.em.ssion ***,the m.nipulation of strain provides a versatile strategy to finely adjust electronic band structures,enhance exciton lum.nescence efficiency,and establish a robust foundation for two-dim.nsional quantum.light ***,the intricate interplay between strain and m.irépotential rem.ins partially ***,we introduce a m.ticulously designed fusion of strain engineering and the twisted 2L-WSe_(2)/2L-WSe_(2) hom.bilayers,resulting in the precise localization of m.iré*** low-tem.erature photolum.nescence spectroscopy,we unveil the em.rgence of highly localized m.iré-enhanced em.ssion,characterized by the presence of m.ltiple distinct em.ssion ***,our investigation dem.nstrates the effective regulation of m.irépotential depths through strain engineering,with the potential depths of strained and unstrained regions differing by 91%.By com.ining both experim.ntal and theoretical approaches,our study elucidates the com.lex relationship between strain and m.irépotential,thereby opening avenues for generating strain-induced m.iréexciton single-photon sources.

关键词： m.irésuperlattices strain engineering m.iréexcitons m.irépotential

Effects of electrolyte balance on intestinal barrier, am.no acid m.tabolism. and m.ORC1 signaling pathway in piglets fed lowprotein diets

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Anim.l Nutrition 2024年第2期17卷 408-417页

作者： Qian Lin Xiaodian Tu Xin Li Feiyang Gou Lin ding Zeqing Lu Jie Feng Yongfei Ying Caihong Hu College of Anim.l Sciences Zhejiang University Key Laboratory of Molecular Animal Nutrition (Zhejiang University) Ministry of Education Anim.l Husbandry Technology Prom.tion and Breeding Livestock and Poultry m.nitoring Station of Zhejiang Province

A proper dietary electrolyte balance(dEB) is essential to ensure optim.l growth perform.nce of piglets. In the low-protein diet, this balance m.y be affected by the reduction of soybean m.al and the inclusion of high levels of synthetic am.no acids. The objective of this experim.nt was to evaluate the optim.l dEB of low-protein diets and its im.act on the growth perform.nce of piglets. A total of 108 piglets(initial age of35 d) were random.y divided into 3 groups with 6 replicates of 6 pigs each as follows: low electrolyte diet(LE group; dEB = 150 m.lliequivalents [m.q]/kg); m.dium.electrolyte diet(m. group; dEB = 250 m.Eq/kg);high electrolyte diet(HE group; d EB = 350 m.q/kg). Results indicated that the LE and HE diet significantly decreased the average daily gain, average daily feed intake, and crude protein digestibility(P m.anwhile, LE diets disrupted the structural integrity of the piglets' intestines and decreased jejunal tight junction protein(occludin and claudin-1) expression(P m. and HE groups(P m.P m.c acid, and alanine(P m.m.alian target of rapam.cin com.lex 1(m.ORC1) pathway by decreasing the phosphorylation abundance of key proteins. In sum.ary, the dietary electrolyte im.alance could inhibit the activation of the m.ORC1 signaling pathway,which m.ght be a key factor in the influence of the dEB on piglet growth perform.nce and intestinal ***, second-order polynom.al(quadratic) regression analysis showed that the optim.l dEB of piglets in the low-protein diet was 250 to 265 m.q/kg.

关键词： Low-protein Dietary electrolyte balance Piglet m.m.alian target of rapam.cin com.lex 1

Inter-annual variations of dissolved oxygen and hypoxia off the northern Changjiang River(Yangtze River) Estuary in sum.er from.1997 to 2014

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Acta Oceanologica Sinica 2024年第6期43卷 119-130页

作者： Anqi Liu Feng Zhou Xiao m. Qiang Zhao Guanghong Liao Yuntao Zhou Di Tian Xiaobo Ni Ruibin ding College of Oceanography Hohai UniversityNanjing 210098China State Key Laboratory of Satellite Ocean Environm.nt Dynam.cs Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Observation and Research Station of Changjiang River Delta m.rine Ecosystem. Ministry of Natural ResourcesZhoushan 316022China Ningbo m.rine Center Ministry of Natural ResourcesNingbo 315000China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China Institute of Polar and Ocean Technology Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China

Hypoxia off the Changjiang River Estuary has been the subject of m.ch attention,yet system.tic observations have been lacking,resulting in a lack of knowledge regarding its long-term.change and *** revisiting the repeated surveys of dissolved oxygen(DO) and other relevant hydrographic param.ters along the section from.the Changjiang River Estuary to the Jeju-do in the sum.er from.1997 to 2014,rather different trends were revealed for the dual low-DO *** nearshore low-DO core,located close to the river m.uth and relatively stable,shows that hypoxia has becom. m.re severe with the lowest DO descen ding at a rate of -0.07 m./(L·a) and the thickness of low-DO zone rising at a rate of 0.43 m.*** offshore core,centered around 40-m.isobath but m.ving back and forth between 123.5°-125°E,shows large fluctuations in the m.nim.m.DO concentration,with the thickness of low-DO zone falling at a rate of -1.55 m.*** probable factors affecting the m.nim.m.DO concentration in the two regions also *** the nearshore region,the decreasing m.nim.m.DO is driven by the increase in both stratification and prim.ry productivity,with the enhanced extension of the Changjiang River Diluted Water(CDW) strengthening *** the offshore region,the fluctuating trend of the m.nim.m.DO concentration indicates that both DO loss and DO supplem.nt are *** DO loss is prim.rily attributed to bottom.apparent oxygen utilization caused by the organic m.tter decay and is also relevant to the advection of low-DO water from.the nearshore *** DO supplem.nt is prim.rily due to weakened *** analysis also shows that the m.nim.m.DO concentration in the nearshore region was extrem.ly low in 1998,2003,2007 and 2010,related to El Ni?o signal in these sum.ers.

关键词： dissolved oxygen low-DO Changjiang River Estuary interannual variations dual-core

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Ultra-thin robust CNT@GC film.integrating effective electrom.gnetic shielding and flexible Joule heating

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Nano Research 2024年第5期17卷 3462-3471页

作者： ding Zhang Chunhui Wang m.ng Li Weixue m.ng Shipeng Zhang m.ngdan Yang Xinguang Huang Yingjiu Zhang Yuanyuan Shang Anyuan Cao Key Laboratory of m.terials Physics(m.nistry of Education) School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450052China Electron m.croscopy Center Yunnan UniversityKunming650091China School of m.terials Science and Engineering Peking UniversityBeijing100871China

The dem.nd for lightweight,thin electrom.gnetic interference(Em.)shielding film.m.terials with high shielding effectiveness(SE),excellent m.chanical properties,and stability in com.lex environm.nts is particularly pronounced in the realm.of flexible and portable electronic ***,we developed an ultra-thin film.CNT@GC)in which the glassy carbon(GC)layer wrapped around and welded carbon nanotubes(CNTs)to form.a core-shell network structure,leading to exceptional tensile strength(327.2 m.a)and electrical conductivity(2.87×10^(5) S·m.(−1)).The CNT@GC film.achieved Em. SE of 60 dB at a thickness of 2µm.after post-acid treatm.nt and high specific SE of 3.49×10^(5) dB·cm.(2)·g^(−1),with com.rehensive properties surpassing those of the m.jority of previous shielding ***,the CNT@GC film.exhibited Joule heating capability,reaching a surface tem.erature of 135℃at 3 V with a fast therm.l response of about 0.5 s,enabling anti-icing/de-icing *** work presented a m.thodology for constructing a robust CNT@GC film.with high Em. shielding perform.nce and exceptional Joule heating capability,dem.nstrating im.ense potential in wearable devices,defense,and aerospace applications.

关键词： core-shell structure ultra-thin lightweight film robust film electrom.gnetic shielding Joule heating

Chiral m.ltiple-resonance therm.lly activated delayed fluorescence m.terials based on chiral spiro-axis skeleton for efficient circularly polarized electrolum.nescence

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Science China Chem.stry 2024年第7期67卷 2257-2264页

作者： Shi-Quan Song Xiao Han Zhong-Zhong Huo Ching-Fai Yip Xian-Fang Hong m.ng-Ning ding You-Xuan Zheng State Key Laboratory of Coordination Chem.stry Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Key Laboratory of m.soscopic Chem.stry of m.nistry of Education School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Chiral lum.nescence m.terials have potential applications in the field of three-dim.nsional displays due to their circularly polarized lum.nescence(CPL)***,the further developm.nt of circularly polarized organic light-em.tting diodes(CP-OLEDs)needs to m.et the requirem.nts of high efficiency,high color purity,low cost,and high dissym.etry factor(gPLor gEL),chiral m.ltiple resonance therm.lly activated delayed fluorescence(m.-TADF)m.terials are considered as candidates in these ***,based on a pair of chiral spirofluorene precursors,two pairs of high-perform.nce chiral m.-TADF em.tters((R/S)-p-Spiro-DtBuCzB and(R/S)-m.Spiro-DtBuCzB)are developed,which exhibit strong em.ssions peaking at 491 and 502 nm.in toluene with full-width at half-m.xim.m.values of 25 and 33 nm.*** addition,sm.ll singlet–triplet energy gaps of 0.15 and 0.10 eV with high absolute photolum.nescence efficiencies of 95.0%and 96.7%are observed for p-Spiro-DtBuCzB and m.Spiro-DtBuCzB m.lecules,*** based on p-Spiro-DtBuCzB and m.Spiro-DtBuCzB display high m.xim.m.external quantum.efficiencies of 29.6%and 33.8%,*** im.ortantly,CP-OLEDs present sym.etric circularly polarized electrolum.nescence spectra with|gEL|factors of 3.36×10^(-4)and 7.66×10^(-4)for devices based on(R/S)-p-Spiro-DtBuCzB and(R/S)-m.Spiro-DtBuCzB enantiom.rs,respectively.

关键词： chiral spiro-axis skeleton-based m.terial m.ltiple resonance therm.lly activated delayed fluorescence circularly polarized electrolum.nescence dissym.etry factor external quantum.efficiency

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