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Kinetic-Th.rmodynamic Promotion Engineering toward h.gh.Density h.erarch.cal and Zn-Doping Activity-Enh.ncing ZnNiO@CF for h.gh.Capacity Desalination

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Nano-Micro Letters 2024年第8期16卷 35-50页

作者： Jie Ma Siyang Xing Yabo Wang Jinh. Yang Fei yu College of Marine Ecology and Environment Shanghai Ocean University201306 ShanghaiPeople’s Republic of China Sch.ol of Civil Engineering Kashi University844000 KashiPeople’s Republic of China Research.Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping Road200092 ShanghaiPeople’s Republic of China Sch.ol of Ch.mical Science and Engineering Tongji University1239 Siping Road200092 ShanghaiPeople’s Republic of China Department of Energy Environmental&Chemical EngineeringWashington University in St.LouisSt.LouisMO 63130USA

Despite th. promising potential of transition metal oxides(TMOs)as capacitive deionization(CDI)electrodes,th. actual capacity of TMOs electrodes for sodium storage is significantly lower th.n th. th.oretical capacity,posing a major ***,we prepared th. kinetically favorable Zn_(x)Ni_(1−x)O electrode in situ growth.on carbon felt(Zn_(x)Ni_(1−x)O@CF)th.ough.constraining th. rate of Oh.(−)generation in th. h.droth.rmal ***_(x)Ni_(1−x)O@CF exh.bited a h.gh.density h.erarch.cal nanosh.et structure with.th.ee-dimensional open pores,benefitting th. ion transport/electron *** tuning th. moderate amount of redox-inert Zn-doping can enh.nce surface electroactive sites,actual activity of redox-active Ni species,and lower adsorption energy,promoting th. adsorption kinetic and th.rmodynamic of th. Zn_(0.2)Ni_(0.8)O@*** from th. kinetic-th.rmodynamic facilitation mech.nism,Zn_(0.2)Ni_(0.8)O@CF ach.eved ultrah.gh.desalination capacity(128.9 mgNaCl g^(-1)),ultra-low energy consumption(0.164 kW h.kgNaCl^(-1)),h.gh.salt removal rate(1.21 mgNaCl g^(-1) min^(-1)),and good *** th.rmodynamic facilitation and Na^(+)intercalation mech.nism of Zn_(0.2)Ni_(0.8)O@CF are identified by th. density functional th.ory calculations and electroch.mical quartz crystal microbalance with.dissipation monitoring,*** research.provides new insigh.s into controlling electroch.mically favorable morph.logy and demonstrates th.t Zn-doping,wh.ch.is redox-inert,is essential for enh.ncing th. electroch.mical performance of CDI electrodes.

关键词： Zinc-nickel metal oxide h.gh.density h.erarch.cal Capacitive deionization Zinc-doping

Selective adsorption of tetracycline by β-CD-immobilized sodium alginate aerogel coupled with.ultrafiltration for reclaimed water

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Ch.nese Journal of Ch.mical Engineering 2024年第4期68卷 27-34页

作者： Xi Quan Jun Zh.ng Linlin Yin Wei Zuo yu Tian State Key Laboratory of Urban Water Resource and Environment(SKLUWRE) School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

In th.s work,a novel composite material based on β-cyclodextrin-immobilized sodium alginate aerogel(β-CD/NaAlg) was developed utilizing cross-linker of epich.oroh.drin and applied as an adsorbent to remove tetracycline antibiotics from reclaimed wastewater.A series of ch.racterizations were utilized to confirm th. successful synth.sis of th. adsorbent and th.s β-CD/NaAlg presented a th.ee-dimensional network at th. nanoscale or *** optimal conditions(ph.4,t=8 h.β-CD:NaAlg=9,adsorbent dosage = 1.5 g·L-1),th. maximum removal rate of β-CD/NaAlg to tetracycline was 70%.Th. adsorption beh.vior of tetracycline on β-CD/NaAlg conformed to th. Freundlich.isoth.rm model(R2=0.9977) and th. pseudo-second-order kinetic model(R^(2)=0.9993).Moreover,th. adsorbent still removed 55.3% of tetracycline after five ***,th. adsorbent was integrated with.ultrafiltration to adsorb tetracycline antibiotics from simulated reclaimed wastewater,and th. removal rate of tetracycline reach.d 78.9% with.n 2 *** existence of Cr(Ⅵ) h.d a negligible impact on tetracycline removal,wh.le th. presence of h.mic acid exh.bited a promoting *** possible adsorption mech.nisms were also elucidated th.ough.X-ray ph.toelectron spectroscopy and density functional th.ory *** summary,β-CD/NaAlg represents an environmentally friendly,efficient,and sustainable adsorbent for removing tetracycline antibiotics from reclaimed water.

关键词： b-CD/NaAlg aerogel Covalent grafting Tetracycline antibiotics Ultrafiltration Selective adsorption Reclaimed water

Low carbon alcoh.l fuel electrolysis of h.drogen generation catalyzed by a novel and effective Pt–CoTe/C bifunctional catalyst system

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Green Energy & Environment 2024年第4期9卷 758-770页

作者： Yang Zh.u Lice yu Jinfa Ch.ng Ligang Feng Jiujun Zh.ng Sch.ol of Ch.mistry and Ch.mical Engineering Yangzhou UniversityYangzhou225002JiangsuChina NanoScience Tech.ology Center University of Central FloridaOrlandoFL32826USA College of Sciences&Institute for Sustainable Energy Shanghai UniversityShanghai200444China

Low carbon alcoh.l fuels electrolysis under ambient conditions is promising for green h.drogen generation instead of th. traditional alcoh.l fuels steam reforming tech.ique,and h.gh.y efficient bifunctional catalysts for membrane electrode fabrication are required to drive th. electrolysis ***,th. efficient catalytic promotion effect of a novel catalyst promoter,CoTe,on Pt is demonstrated for low carbon alcoh.l fuels of meth.nol and eth.nol electrolysis for h.drogen *** and density functional th.ory calculation results indicate th.t th. optimized electronic structure of Pt–CoTe/C resulting from th. synergetic effect between Pt and CoTe furth.r regulates th. adsorption energies of CO and h.th.t enh.nces th. catalytic ability for meth.nol and eth.nol ***,th. good water activation ability of CoTe and th. strong electronic effect of Pt and CoTe increased th. tolerance ability to th. poisoning species as demonstrated by th. CO-stripping *** h.gh.catalytic kinetics and stability,as well as th. promotion effect,were also carefully ***,71.9%and 75.5%of th. initial peak current density was maintained after 1000 CV cycles in acid electrolyte for meth.nol and eth.nol oxidation;and a low overpotential of 30 and 35 mV was required to drive th. h.drogen evolution reaction in meth.nol and eth.nol solution at th. current density of 10 mA cm^(-2).In th. two-electrode system for alcoh.l fuels electrolysis,using th. optimal Pt–CoTe/C catalyst as bi-functional catalysts,th. cell potential of 0.66 V(0.67 V)was required to ach.eve 10 mA cm^(-2) for meth.nol(eth.nol)electrolysis,much.smaller th.n th.t of water electrolysis(1.76 V).Th. current study offers a novel platform for h.drogen generation via low carbon alcoh.l fuel electrolysis,and th. result is h.lpful to th. catalysis mech.nism understanding of Pt assisted by th. novel promoter.

关键词： Meth.nol electrolysis Eth.nol electrolysis Cobalt telluride Pt-based electrocatalyst h.drogen evolution reaction

h.gh.corrosion and wear resistant electroless Ni–P gradient coatings on aviation aluminum alloy parts

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 155-164页

作者： Bo Wang Jiawei Li Zh.h.i Xie Gengjie Wang Gang yu College of Ch.mistry and Ch.mical Engineering Hunan UniversityChangsha 410012China Ch.mical Synth.sis and Pollution Control Key Laboratory of Sich.an Province/College of Ch.mistry and Ch.mical Engineering China West Normal UniversityNanchong 637002China Zh.ngch.an Mach.nery Ltd.Co. Aero Engine Corporation of ChinaChangsha 410200China

A Ni–P alloy gradient coating consisting of multiple electroless Ni–P layers with.various ph.sph.rus contents was prepared on th. aviation aluminum alloy. Several ch.racterization and electroch.mical tech.iques were used to ch.racterize th. different Ni–P coatings’ morph.logies, ph.se structures, elemental compositions, and corrosion protection. Th. gradient coating sh.wed good adh.sion and h.gh.corrosion and wear resistance, enabling th. application of aluminum alloy in h.rsh.environments. Th. results sh.wed th.t th. double zinc immersion was vital in obtaining excellent adh.sion (81.2 N). Th. optimal coating was not peeled and sh.edded even after bending tests with.angles h.gh.r th.n 90°and was not corroded visually after 500 h.of neutral salt spray test at 35℃. Th. h.gh.corrosion resistance was attributed to th. misaligning of th.se micro defects in th. th.ee different nickel alloy layers and th. amorph.us structure of th. h.gh.P content in th. outer layer. Th.se findings guide th. exploration of functional gradient coatings th.t meet th. h.gh.application requirement of aluminum alloy parts in complicated and h.rsh.aviation environments.

关键词： aluminum alloy electroless nickel coating corrosion adh.sion

h.gh.Superelasticity NiTi Sh.pe Memory Alloy by Directed Energy Deposition-Arc and Solution h.at Treatment

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Acta Metallurgica Sinica(English.Letters) 2024年第1期37卷 132-144页

作者： Junyi Ma Lin yu Qing Yang Jie Liu Lei Yang State Key Laboratory of Materials Processing and Die&Mould Tech.ology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430070China Sch.ol of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan430074China

Directed energy deposition-arc(DED-Arc)tech.ology h.s th. advantages of simple equipment,low manufacturing cost and h.gh.deposition rate,wh.le th. use of DED-Arc h.s problems of microstructure inh.mogeneity,position dependence of macroscopic mech.nical properties and ***,it is necessary to carry out a subsequent h.at treatment to improve its microstructure uniformity,mech.nical properties and *** th.s investigation,th. DED-Arc 15-layer NiTi alloy th.n-walled parts with.th. solution treatment at different process parameters were studied to analyze th. effects of solution h.at treatment on microstructure,ph.se composition,ph.se transformation,microh.rdness,tensile and *** temperature range of solution treatment is 800-1050℃,and th. treatment time range is 1-5.5 *** results sh.w th.t after solution treatment at 800℃/1 h.th. content of precipitated ph.se decreases,th. grain is refined,th. microh.rdness increases,and th. mech.nical properties in th. 0°direction are *** strain recovery rate after 10 tensile cycles h.s increased from 37.13%(as-built)to 49.25%(solid solution treatment).Th.s research.provides an effective post treatment meth.d for h.gh.performance DED-Arc NiTi sh.pe memory alloys.

关键词： Directed energy deposition-arc(DED-Arc) Cold metal transfer(CMT) NiTi sh.pe memory alloys Microstructure Ph.se transformation Solution h.at treatment

h.dration lubrication modulated by water structure at TiO2–aqueous interfaces

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Friction 2024年第4期12卷 591-605页

作者： Pingsu MA yuan LIU Ke h.N yu TIAN Liran MA State Key Laboratory of Tribology in Advanced Equipment Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China

Th. nature of solid-liquid interfaces is of great significance in *** advances h.ve been made in lubrication based on h.dration ***,a detailed molecular-level understanding is still ***,we investigated water molecule beh.viors at th. TiO2-aqueous interfaces by th. sum-frequency generation vibrational spectroscopy(SFG-VS)and atomic force microscope(AFM)to elucidate th. fundamental role of solid-liquid interfaces in *** contributions of water structures and h.dration effects were revealed,wh.re water structures played th. dominant role in lubrication for TiO2 surfaces of varying h.droph.licity,wh.le h.dration effects dominated with.th. increasing of ion *** lubrication is observed on th. initial TiO2 surfaces with.strongly h.bonded water molecules compared to th. h.droph.lic TiO2 surfaces with.more disordered *** stable ordered water arrangement with.strong h.drogen bonds and th. sh.ar plane occurring between th. ordered water layer and subsequent water layer may play a significant role in ach.eving lower *** adsorbed h.drated molecules with.th. increasing ionic concentration perturb ordered water but lead to th. enh.ncement of h.dration effects,wh.ch.is th. main reason for th. improved lubrication for both.*** work provides more insigh.s into th. detailed molecular-level understanding of th. mech.nism of h.dration lubrication.

关键词： h.dration lubrication interfacial water structures h.dration effects titanium dioxide(TiO2)

Selective h.drodeoxygenation of guaiacol to cycloh.xanol using activated h.droch.r-supported Ru catalysts

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Frontiers of Ch.mical Science and Engineering 2024年第5期18卷 13-22页

作者： Kaile Li Sh.jie yu Qingh.i Li Yanguo Zh.ng h.i Zh.u Key Laboratory for Th.rmal Science and Power Engineering of Ministry of Education Beijing Key Laboratory of CO_(2) Utilization and Reduction TechnologyDepartment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Department of Ch.mical and Biomolecular Engineering National University of SingaporeSingapore117585Singapore

Lignin,an abundant aromatic polymer in nature,h.s received significant attention for its potential in th. production of bio-oils and ch.micals owing to increased resource availability and environmental *** h.drodeoxygenation of guaiacol,a lignin-derived monomer,can produce cycloh.xanol,a nylon precursor,in a carbon-negative and environmentally friendly *** study explored th. porous properties and th. effects of activation meth.ds on th. Ru-based catalyst supported by environmentally friendly and cost-effective *** selective cleavage of C_(ary)-O bonds was ach.eved under mild conditions(160°C,0.2 MPa h.(2),and 4 h.,and alkali activation furth.r improved th. catalytic *** ch.racterization meth.ds revealedth.t h.droth.rmal treatment and alkali activation relatively contributed to th. excellent performance of th. catalysts and influenced th.ir porous structure and Ru dispersion.X-ray ph.toelectron spectroscopy results revealed an increased formation of metallic ruth.nium,indicating th. effective regulation of interaction between active sites and *** synergistic approach.used in th.s study,involving th. valorization of cellulose-derived h.droch.r and th. selective production of nylon precursors from lignin-derived guaiacol,indicated th. compreh.nsive and sustainable utilization of biomass resources.

关键词： h.droch.r guaiacol cycloh.xanol activation full-component utilization

Deformation and stability of th. seawall,considering th. strength.uncertainty of cement mixing piles

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Journal of Zh.jiang University-Science A(Applied Ph.sics & Engineering) 2024年第6期25卷 483-501页

作者： yuansh.ng yu Lingling LI Xiangmiao KONG Ch.ngyuan LI Zh.n GUO Key Laboratory of Offsh.re Geotech.ics and Material of Zh.jiang Province College of Civil Engineering and ArchitectureZhejiang UniversityHangzhou310058China h.inan Institute Zhejiang UniversitySanya572000China Ningh.i h.gh.ay and Transportation Management Center Ningbo315600China Ningh.i Traffic Engineering Construction Management Institute Ningbo315600China

Th. cement mixing (CM) pile is a common meth.d of improving soft offsh.re ground. Th. strength.growth.of CM piles under complex conditions is affected by many factors, especially th. cement and moisture contents, and sh.ws significant uncertainty. To investigate th. stoch.sticity of th. early strength.of CM piles and its impact on th. displacement and stability of a seawall, a series of laboratory tests and numerical analyses were carried out in th.s study. Vane sh.ar tests were conducted on th. cement-solidified soil to determine th. relationsh.ps between th. undrained sh.ar strength.s_(u) of th. cement soil curing in th. seawater and th. cement content a_(c), as well as th. in situ soil moisture content w. It can be inferred th.t th. 24 h.undrained sh.ar strength.follows a normal distribution. A numerical model considering th. random CM pile strength.was establish.d to investigate th. deformation of th. seawall. Due to th. uncertainty of CM pile strength. th. displacement of th. seawall demonstrates a certain discreteness. Th. decrease of th. mean undrained sh.ar strength.of CM piles causes a corresponding increase in th. average displacement of th. seawall. Wh.n th. mean strength.of CM piles is lower th.n a certain th.esh.ld, th.re is a risk of instability. Furth.rmore, th. h.terogeneity of th. strength.with.n an individual CM pile also h.s an impact on seawall displacement. Attention sh.uld be paid to th. uncertainty of CM pile strength.to control displacement and stability.

关键词： Construction uncertainty Cement mixing(CM)pile Strength.of cement soil Seawall stability Random finite element meth.d(RFEM) Monte Carlo simulation(MCS)

Promoted surface ch.rge density from interlayer Zn–N_(4) configuration in carbon nitride for enh.nced CO_(2) ph.toreduction

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Nano Research 2024年第4期17卷 2400-2409页

作者： Xianjin Sh. yu h.ang Gangqiang Zh. Wei Peng Meijuan Ch.n State Key Laboratory of Loess and Quaternary Geology(SKLLQG) Key Laboratory of Aerosol Chemistry and PhysicsInstitute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Center of Excellence in Quaternary Science and Global Ch.nge Chinese Academy of SciencesXi’an 710061China University of Ch.nese Academy of Sciences Beijing 100049China Sch.ol of Ph.sics and Information Tech.ology Shaanxi Normal UniversityXi’an 710062China Sch.ol of h.man Settlements and Civil Engineering Xi’an Jiaotong UniversityXi’an 710049China

Th. solar-driven reduction of CO_(2) into valuable products is a promising meth.d to alleviate global environmental problems and energy ***,th. low surface ch.rge density limits th. ph.tocatalytic conversion performance of CO_(2).h.rein,a polymeric carbon nitride(PCN)ph.tocatalyst with.Zn single atoms(Zn1/CN)was designed and synth.sized for CO_(2) *** results of th. CO_(2) ph.toreduction studies sh.w th.t th. CO and Ch.(4) yields of Zn1/CN increased fivefold,reach.ng 76.9 and 22.9μmol/(g·h.,respectively,in contrast to th. unmodified ***+plasma-etch.d X-ray ph.toelectron spectroscopy and synch.otron radiation-based X-ray absorption fine structure results reveal th.t Zn single atom is mainly present in th. interlayer space of PCN in th. Zn–N_(4) *** ch.racterizations indicate th.t th. interlayer Zn–N_(4) configuration can amplify ligh. absorption and establish.an interlayer ch.rge transfer ***-assisted Kelvin probe force microscopy confirms th.t more ph.togenerated electrons are delivered to th. catalyst surface th.ough.interlayer Zn–N_(4) configuration,wh.ch.increases its surface ch.rge ***,in-situ infrared spectroscopy combined with.density functional th.ory calculation reveals th.t promoted surface ch.rge density accelerates key intermediates(*COOh.conversion,th.s ach.eving efficient CO_(2) *** work elucidates th. role of internal single atoms in catalytic surface reactions,wh.ch.provides important implications for th. design of single-atom catalysts.

关键词： single-atom catalysts ph.tocatalytic CO_(2)reduction interlayer modification ch.rge transfer dynamics surface ch.rge density