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Steering spatially separated dual sites on nano-TiO_(2)through SMSI and lattice matching for robust photocatalytic hydrogen evolution

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Chinese Chemical Letters 2021年第11期32卷 3613-3618页

作者： Mingjun Ma Haiqing Wang Hong Liu Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJi'nan 250022China State Key Laboratory of Crystal Materials Shandong UniversityJi'nan 250100China

Spatial isolation of different functional sites at the nanoscale in multifunctional catalysts for steering reaction sequence and paths remains a major ***,we reported the spatial separation of dual-site Au and RuO_(2)on the nanosurface of TiO_(2)(Au/TiO_(2)/RuO_(2))through the strong metal-support interaction(SMSI)and the lattice matching(LM)for robust photocatalytic hydrogen *** SMSI between Au and TiO_(2)induced the encapsulation of Au nanoparticles by an impermeable TiO_(x)overlayer,which can function as a physical separation barrier to the permeation of the second *** LM between RuO_(2)and rutile-TiO_(2)can increase the stability of RuO_(2)/TiO_(2)interface and thus prevent the aggregation of dual-site Au and RuO_(2)in the calcination process of removing TiO_(x)overlayer of *** photocatalytic hydrogen production is used as a model reaction to evaluate the performance of spatially separated dual-site Au/TiO_(2)/RuO_(2)*** rate of hydrogen production of the Au/TiO_(2)/RuO_(2)is as high as 84μmol h^(−1)g^(−1)under solar light irradiation without sacrificial agents,which is 2.5 times higher than the reference Au/TiO_(2)and non-separated Au/RuO_(2)/TiO_(2)*** characterizations verify that the spatially separated dual-site Au and RuO_(2)on the nanosurface of TiO_(2)can effectively separate the photo-generated carriers and lower the height of the Schottky barrier,respectively,under UV and visible light *** study provides new inspiration for the precise construction of different sites in multifunctional catalysts.

关键词： Photocatalysis Hydrogen evolution Spatial separation SMSI lattice matching

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Oriented assembly of metal-organic frameworks and deficient TiO_(2) nanowires directed by lattice matching for efficient photoreversible color switching

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Science China Materials 2022年第4期65卷 992-999页

作者： Mingxiong Lin Weishan Jiang Chengkai Yang Zanyong Zhuang Yan Yu College of Materials Science and Engineering Fuzhou UniversityFuzhou350108China Key Laboratory of Advanced Materials Technologies Fuzhou UniversityFuzhou350108China

The photoreversible color switching system(PCSS)is attracting increasing attention for use in alleviating energy crisis and environmental *** report a robust PCSS in which lattice matching enables bottom-up oriented assembly between metal-organic frameworks(MOFs)and inorganic nanocrystals(INCs),two distinct entities that differ drastically in structure and ***,cubic-phase Prussian blue(PB)of a framework backbone is spontaneously attached to rutile TiO_(2)nanowires in a defined orientation triggered by the lattice matching between the(001)plane of TiO_(2)and the(222)plane of *** light irradiation accelerates the photoelectron transport within the oriented TiO_(2)/PB system and enables fast photo *** derived TiO_(2)/PB paper can be ranked as one of the best light-printing papers in literature because of its high resolution(∼µm)and capability to be repeatedly written for>100 times without significant loss of *** ultrathin TiO_(2)nanowires are rich in oxygen and Ti vacancies,which allow visible-and sunlight-light *** functional theory calculations suggest that the[Fe(CN)_(6)]^(4−) ligand from the PB attaches preferentially to the(110)surface of TiO_(2)to give the ordered TiO_(2)/PB *** findings demonstrate the strong versatility of particles-mediated assembly in advanced materials design.

关键词： photoreversible color switching metal-organic framework oriented assembly lattice matching defects

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Facilely constructing ultrahigh lattice-matched CuZn_(5) epitaxial interface for dendrite-free Zn metal anode

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Journal of Energy Chemistry 2024年第12期99卷 671-680页

作者： Jin Cao Haiyang Wu Yilei Yue Dongdong Zhang Biaoyang Li Ding Luo Lulu Zhang Jiaqian Qin Xinyu Zhang Xuelin Yang College of Hydraulic&Environmental Engineering China Three Gorges UniversityYichang 443002HubeiChina Hubei Provincial Collaborative Innovation Center for New Energy Microgrid College of Electrical Engineering&New EnergyChina Three Gorges UniversityYichang 443002HubeiChina State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004HebeiChina College of Materials Engineering North China Institute of Aerospace EngineeringLangfang 065000HebeiChina School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina Center of Excellence on Advanced Materials for Energy Storage Metallurgy and Materials Science Research InstituteChulalongkorn UniversityBangkok 10330Thailand

Constructing a protective layer on Zn anode surface with high lattice matching to Zn(002)can facilitate preferential growth along the(002)crystal plane and suppress dendritic growth as well as interface side *** most of protective layers are complex and costly,making commercial applications ***,we introduce a facile method involving the addition of CuCl_(2) electrolyte additives to conventional electrolyte systems,which,through rapid displacement reactions and controlled electrochemical cycling,forms a CuZn_(5) alloy layer with 97.2%lattice matching to the(002)plane(CuZn_(5)@Zn),thus regulating the(002)plane epitaxial *** a result,the symmetric cells with CuZn_(5)@Zn demonstrate an ultra-long cycle life of 3600 h at 1 mA cm^(-2).Under extreme conditions of high current density(20 m A cm^(-2))and high zinc utilization(DOD_(Zn)=50%),stable cycling performance is maintained for 220 and 350 h,***,the CuZn_(5)@Zn||NH_(4)V_(4)O_(10)full cell maintains a capacity of 120 m A h g^(-1)even after 10,000 cycles at a high current density of 10 A g^(-1).This work presents a facile and efficient strategy for constructing stable metal anode materials,with implications for the development of next-generation rechargeable batteries.

关键词： Zn anode CuZn_(5)alloy lattice matching Dendrites Side reactions

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Interface characteristics between TiN and matrix and their effect on solidification structure

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Journal of Iron and Steel Research International 2021年第9期28卷 1149-1158页

作者： Tian-peng Qu De-yong Wang Hui-hua Wang Dong Hou Jun Tian Shao-yan Hu Li-juan Su Shagang School of Iron and Steel Soochow UniversitySuzhou215021JiangsuChina

Heterogeneous nucleation is an effective way to promote the dispersion and precipitation of second-phase particles in steel and refine the grain size of the solidification *** only refining as-cast structure grain size,but TiN in ferritic stainless steel can also pin grain boundaries and restrain the overgrowth of grains during *** interface characteristics between TiN and heterogeneous phases(high-melting inclusions and ferrite phase)were studied based on the wetting angles between molten steel with different compositions and TiN substrate,and on the matching degree between TiN and ferrite *** was found that,for the molten steel with the same composition,the wetting angle with the TiN substrate was significantly smaller than the contact angles with the other three substrates,while the wetting angle between ferrite phase and TiN was the *** lattice matching was compared among MgAl_(2)O_(4),TiN andδmatrix by means of a high-resolution transmission electron microscope,which revealed that a coherent or semi-coherent interface was formed between the crystal plane(400)of MgAl_(2)O_(4)and the crystal plane(200)of TiN,as well as between the crystal plane(200)of TiN and the crystal plane(110)ofδmatrix,with a lattice misfit of 5.1%and 3.4%,***,these two characteristics between TiN and ferrite phase were both explained from the perspective of interfacial *** microstructure refinement mechanism from high temperature to room temperature can be better reflected by the proposed wetting–lattice misfit theory.

关键词： TiN Heterogeneous nucleation Interfacial wetting lattice matching Grain refinement

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Investigation on interface of NiFeCr/NiFe/Ta films with high magnetic field sensitivity

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Rare Metals 2012年第1期31卷 22-26页

作者： Sheng, Shu Li, Wei Li, Minghua Yu, Guanghua Department of Materials Physics and Chemistry University of Science and Technology Beijing Beijing 100083 China

NiFeCr/NiFe/Ta films with excellent performance were prepared by magnetron sputtering *** anisotropic magetoresistance (AMR) value (ΔR/R) and magnetic filed sensitivity (Sv,Sv=[d(ΔR/R)/dH]max.) for the 12 nm NiFe film deposited on NiFeCr buffer layer were 3.66% and 1.42×10-4%·T-1,*** higher Sv of the film is close to that of a spin valve (SV).The microstructure analysis shows that the NiFeCr buffer layer has adopted the same structure with the same interplanar distance as the NiFe layer,inducing a strong NiFe (111) texture,and that the NiFeCr/NiFe interface is quite smooth,leading to a high degree of specular reflection of conduction *** increase the ΔR and reduce the R in the film,which lead to the high ΔR/*** substrate surfaces are critical for preparation of high performance NiFeCr/NiFe/Ta films,and sputter cleaning or pre-deposition of 5 nm amorphous Al2O3 layer in the deposition chamber can provide the re-quired clean substrate surfaces for the growth of the buffer layer.

关键词： ultrathin NiFe films magnetic field sensitivity lattice matching

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Li_(2)TiO_(3) Dopant and Phosphate Coating Improve the Electrochemical Performance of LiCoO2 at 3.0-4.6 V

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Transactions of Tianjin University 2023年第1期29卷 46-61页

作者： Baozhao Shi Jiangli Feng Jing Liu Yanan Zhou Jinli Zhang Wei Li School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

A sol-gel tandem with a solid-phase modification procedure was developed to synthesize Li_(2)TiO_(3)-doped LiCoO_(2) together with phosphate coatings(denoted as LCO-Ti/P),which possesses excellent high-voltage performance in the range of 3.0-4.6 *** characterizations of X-ray diffraction,high-resolution transmission electron microscopy,and X-ray photoelectron spectroscopy illustrated that the modified sample LCO-Ti/P had the dopant of monoclinic Li_(2)TiO_(3) and amorphous Li3PO4 coating ***-Ti/P has an initial discharge capacity of 211.6 mAh/g at 0.1 C and a retention of 85.7%after 100 cycles at 1 C and 25±1°C between 3.0 and 4.6 *** plots reflect that the charge transfer resistance of LCO-Ti/P after 100 cycles at 1 C is much lower than that of the spent LCO,which benefits Li-ion *** functional theory calculations disclose the superior lattice-matching property of major crystal planes for Li_(2)TiO_(3) and LiCoO_(2),the lower energy barriers for Li-ion diffusion in Li_(2)TiO_(3),and the suppressed oxygen release performance resulting from phosphate *** work provides useful guidance on the rational design of the high-voltage performance of modified LiCoO_(2) materials in terms of lattice-matching properties aside from the phosphate coating to reduce the energy barriers of Li-ion diffusion and enhance cycling stability.

关键词： LiCoO_(2) High-voltage performance Li_(2)TiO_(3) lattice matching Li-ion diffusion Density functional theory calculation

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Precise synthesis of multilevel branched organic microwires for optical signal processing in the near infrared region

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Science China Materials 2022年第4期65卷 1020-1027页

作者： Chang-Cun Yan Jun-Jie Wu Wan-Ying Yang Song Chen Qiang Lv Xue-Dong Wang Liang-Sheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipaMacao SAR999078China

Complicated multilevel micro/nanostructures have attracted great attention as essential basic components of integrated optoelectronic ***,precise synthesis of these well-designed micro/nanostructures is still a major *** this report,a series of near-infrared emissive multilevel branched organic microwires with different integrated levels are successfully fabricated for the first time by a facile self-assembly approach based on our well designed and synthesized(2E,2′E)-1,1′-(1,5-dihydroxynaphthalene-2,6-diyl)bis(3-(4-(dimethylamino)phenyl)prop-2-en-1-one)(DHNBP).The growth mechanism is attributed to lattice matching between(100)and(010)crystal planes,with an interplanar spacing mismatch rate as low as 5.3%.Benefiting from the uniaxial oriented molecular packing mode of the crystal,the well-prepared microwires have outstanding optical *** significantly,the branched structures can work as optical logic gates and optical signal ***,this synthesis method for multilevel branched microwires will potentially facilitate the development of organic integrated optoelectronics.

关键词： organic homostructure solution self-assembly lattice matching asymmetric optical waveguide integrated photonics

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