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Surface Modification of NaCl Particles with Metal Films Using the Polygonal Barrel-Sputtering Method

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Materials Sciences and Applications 2013年第7期4卷 29-34页

作者： Satoshi Akamaru Mitsuhiro Inoue Takayuki Abe Hydrogen Isotope Research Center University of Toyama Toyama Japan

In this study, the surfaces of NaCl particles were modified with metal films using the polygonal barrel-sputtering method. When Pt was sputtered on NaCl particles, the individual particles changed from white to metallic. Characterization of the treated samples indicated that thin Pt metal films were uniformly deposited on the NaCl particles. Immersion of the treated NaCl particles in water revealed that they floated to the surface of the water with the increase in the immersion time, although their original cubic shapes remained unchanged. The floating phenomenon of the Pt-coated NaCl particles, as mentioned above, suggests that NaCl was dissolved by the permeation of water through invisible defects such as grain boundaries in the Pt films, leading to the formation of hollow particle-like materials. It should be noted that uniform film deposition on the NaCl particles could also be achieved by sputtering with Au or Cu. Based on the obtained results, our sputtering method allows uniform surface modification of water-soluble and water-reactive powders that cannot be treated by conventional wet process using water.

关键词： Particle Surface Modification Ionic Crystal Dry Process Sputtering Technique NaCl

In situ revealing the reconstruction behavior of monolayer rocksalt CoO nanosheet as water oxidation catalyst

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Journal of Energy Chemistry 2022年第7期31卷 373-381,I0010页

作者： Weiqi Guo Haolin Luo Dongxu Fang Zhi Jiang Jiasheng Chi Wenfeng Shangguan research center for Combustion and Environment Technology Shanghai Jiao Tong UniversityShanghai 200240China center of hydrogen Science Shanghai Jiao Tong UniversityShanghai 200240China

The reconstruction during oxygen evolution reaction (OER) significantly affects the electronic and local geometry structure of metal sites in electrocatalyst.Compared with well-investigated cobalt-based materials,the reconstruction of rocksalt CoO with purely Co^(2+) in octahedral (Oh) coordination has not been revealed in detail.Herein,monolayer Co O supported on reduced graphene oxide (r GO) was synthesized via a one-pot hydrothermal strategy with calcinating in Ar atmosphere.The structure evolution of twodimension (2D) Co O/r GO during OER was revealed by in situ X-ray absorption spectroscopy (XAS).The transition from Co O toward Co3O_(4) already occurred at open circuit potential,further enhanced at 1.23 V (vs.RHE).The Co Ox(OH)ywas determined as the active phase at 1.53 V,displaying a tetrahedral Co coordination defective spinel Co_(3)O_(4) with the Co-O shell that featured the (oxy)hydroxide,not the standard Co OOH.After OER,the irreversible transition from CoO to Co_(3)O_(4) was observed.In contrast,in situ Raman spectra revealed a reversible amorphization process on Co_(3)O_(4)/r GO under operation conditions.Furthermore,this study indicated that the reconstruction behavior could be more effectively revealed by XAS using 2D materials.

关键词： Oxygen evolution reaction Two-dimension materials Rocksalt CoO X-ray absorption spectroscopy In situ experiments

吩嗪类衍生物用于快速充放电和长寿命的水系钾离子全电池负极（英文）

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Science China Materials 2024年第5期67卷 1464-1470页

作者：郑易帆于丹丹王健晨杨杰罗稳戈天奇秦来顺黄岳翔陈达 College of Materials and Chemistry China Jiliang University hydrogen Energy research center PetroChina Petrochemical research Institute

有机电极材料因具有结构多样性和可持续性,在水系钾离子电池研究领域展示出广阔的前景,但它们大多数存在导电性差、易溶于电解液的问题,导致电极活性物质利用率低、循环稳定性差.本文通过含氮苯环的共轭延申、引入氰基活性中心,获得了3C... 详细信息

有机电极材料因具有结构多样性和可持续性,在水系钾离子电池研究领域展示出广阔的前景,但它们大多数存在导电性差、易溶于电解液的问题,导致电极活性物质利用率低、循环稳定性差.本文通过含氮苯环的共轭延申、引入氰基活性中心,获得了3CN-HATN.与经#吩嗪负极相比,3CN-HATN的最低未占据分子轨道能级更低,更容易被还原,且其能带隙较窄,改善了导电性,其共轭结构可有效抑制循环过程中3CN-HATN的溶解.3CN-HATN负极在80 C (1 C=350 mA g-1)下比容量高达233.8 mA h g-1,将其与Ni(OH)2正极匹配,构建的水系钾离子全电池具备优异的循环稳定性和快充性能,30 C下循环10,000圈后容量保持率达81.5%.

关键词： aqueous rechargeable batteries π-conjugated structure organic electrodes K + storage phenazine derivatives

A Newly Developed Non-destructive Tritium Measurement Technique and Its Application to a V-4Cr-4Ti Alloy

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Southwestern Institute of Physics Annual Report 2006年第1期 154-155页

作者： LIU Xiang CHEN Xue Homma H. Hatano Y. Matsuyama M. 不详 Sichuan General Fire Brigade Chengdu 610041 China Hydrogen Isotope Research Center Toyama University Gofuku 3190 Toyama 930-8555 Japan

Microstructure,hardening and deuterium retention in CVD tungsten irradiated with neutrons at temperatures of defect recovery stagesⅡandⅢ

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Tungsten 2022年第3期4卷 248-260页

作者： Xiao-Ou Yi Tatsuya Kuwabara Vladimir KhAlimov Yu-Feng Du Wen-Tuo Han Ping-Ping Liu Bin-You Yan Jiu-Peng Song Kenta Yoshida Takeshi Toyama Fa-Rong Wan Somei Ohnuki Yuji Hatano Yasuyoshi Nagai School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China Graduate School of Engineering Nagoya UniversityFuro-choChikusa-kuNagoya464-8063Japan Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of SciencesMoscow119071Russia Institute for Materials research Tohoku UniversityNarita-cho 2145-2OaraiIbaraki311-1313Japan Xiamen Tungsten Co.Ltd. Xiamen361021China School of Materials Science and Engineering Xihua UniversityChengdu610039China Hydrogen Isotope Research Center University of ToyamaToyama930-8555Japan

Samples of ultra-high-purity tungsten prepared using chemical vapour deposition(CVD)technique were irradiated with neutrons at temperatures T_(irr)=373-483 K(stage Ⅱ of defect recovery)and T_(irr)=573-673 K(stage Ⅲ)up to 0.15 displacements per atom(dpa)in the Belgian reactor(BR2).The study of the microstructure of neutron-damaged samples using transmission electron microscopy(TEM)revealed visible defects with a predominance of dislocation loops.With an increase in the neutron irradiation temperature,the spatial distribution of the loops acquired pronounced inhomogeneity,and their average size moderately increased.Cavities and voids were not observed.Irradiation-induced hardening was found and a linear correlation was obtained between Vickers microhardness and nanohardness for undamaged and neutron-irradiated CVD-W samples.Irradiation of tungsten with neutrons led to a significant increase in the retention of deuterium,which accumulated mainly in vacancy-type traps.Furthermore,the influence of the columnar grain structure in low-dose neutron-irradiated tungsten seemed to be non-trivial upon deuterium retention.

关键词： CVD-W Neutron irradiation Microstructure Hardening Deuterium retention

Sputtered nano-cobalt on H-USY zeolite for selectively converting syngas to gasoline

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Journal of Energy Chemistry 2015年第5期24卷 637-641页

作者： Peng Lu Jian Sun Pengfei Zhu Takayuki Abe Ruiqin Yang Akira Taguchi Tharapong Vitidsant Noritatsu Tsubaki Zhejiang Provincial Key Lab for Chem. & Bio. Processing Technology of Farm Product School of Biological and Chemical Engineering Zhejiang University of Science and Technology Department of Applied Chemistry School of Engineering University of Toyama Dalian National Laboratory for Clean Energy (DNL) Dalian Institute of Chemical Physics Chinese Academy of Sciences Hydrogen Isotope Research Center University of Toyama Department of Chemical Technology Faculty of Science Chulalongkorn University

Selectively converting CO and H2 to gasoline product （isoparaffin and olefin） in one step still remains a great challenge. We demonstrate effective H-USY zeolite supported nano-cobalt bifunctional catalysts for this catalytic reaction, which are prepared by the novel physical sputtering process. Particles of the sputtered cobalt exist in nano-level and are well-dispersed on acid USY zeolite. Easy activation of the loaded nano-cobalt is also achieved in a low-temperature hydrogen reduction atmosphere. In the tandem catalytic reaction, the sputtered bifunctional Co/USY catalyst exhibits a much higher CO conversion and higher isoparaffin selectiv- ity than the conventional impregnated one. Compared with H-Mor, H-Beta and other zeolites supported catalysts, H-USY zeolite supported cobalt catalyst shows the clearest promotional effect on the activity of FischerTropsch synthesis. The described synthesis herein provides a new pathway to solve the problem caused by the strong metal-support interaction （MSI） in heterogeneous catalysis.

关键词： Cobalt USY Zeolite Fischer-Tropsch synthesis Hydrocarbon

Sonocatalytic hydrogen/hole-combined therapy for anti-biofilm and infected diabetic wound healing

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National Science Review 2023年第5期10卷 262-271页

作者： Qingqing Xu Shengqiang Chen Lingdong Jiang Chao Xia Lingting Zeng Xiaoqing Cai Zhaokui Jin Shucun Qin Wenjiang Ding Qianjun He Taishan Institute for hydrogen Biomedical research School of Basic Medical SciencesThe Second Affiliated Hospital of Shandong First Medical University&Shandong Academy of Medical Sciences Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging School of Biomedical EngineeringMedical SchoolShenzhen University Shanghai Key Laboratory of hydrogen Science&center of hydrogen Science School of Materials Science and EngineeringShanghai Jiao Tong University

It is a great challenge to effectively eradicate biofilm and cure biofilm-infected diseases because dense extracellular polymeric substance matrix prevents routine antibacterial agents from penetrating into biofilm.H2is an emerging energy-regulating molecule possessing both high biosafety and high tissue permeability.In this work,we propose a concept of sonocatalytic hydrogen/hole-combined ’inside/outside-cooperation’anti-biofilm for promoting bacteria-infected diabetic wound healing based on two-dimensional piezoelectric nanomaterials.Proof-of-concept experiments using C3N4nanosheets as a representative piezoelectric catalyst with wide band gap and high biosafety have verified that sonocatalytically generated H2and holes rapidly penetrate into biofilm to inhibit bacterial energy metabolism and oxidatively deprive polysaccharides/NADH in biofilm to destroy the bacterial membrane/electron transport chain,respectively,inside/outside-cooperatively eradicating biofilm.A bacteria-infected diabetic wound model is used to confirm the excellent in vivo antibacterial performance of sonocatalytic hydrogen/hole-combined therapy,remarkably improving bacteria-infe cted diabetic wound healing.The proposed strategy of sonocatalytic hole/hydrogen-combined ’inside/outside-cooperation’ will make a highway for treatment of deep-seated biofilm infection.

关键词： nanocatalytic medicine hydrogen therapy biofilm diabetic foot piezoelectric catalysis

Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells

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Chinese Journal of Polymer Science 2022年第12期40卷 1604-1612,I0008页

作者： Lei Zhu Quan-Zeng Zhang Hong Ding Ming Zhang Xiao-Nan Xue Wen-Kai Zhong Zi-Chun Zhou Jin-Qiu Xu Wei Feng Ye-Cheng Zou Yong-Ming Zhang Feng Liu Frontiers Science center for Transformative Molecules In-situ Center for Physical Scienceand Center of Hydrogen ScienceSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future hydrogen Energy Materials Company Zibo 256401China

The manipulation of the morphology of the active layers is crucial for improving the performance of organic photovoltaic(OPV)devices. In particular, the development of non-fullerene acceptors(NFAs) has led to a large number of new materials with more complex interactions. Therefore, the investigation on the morphology control mechanism is the key aspect in providing guidance for material design and device optimization. In this study, the film morphology optimization using 1,8-diiodooctane(DIO) additive and a ternary fullerene acceptor strategy have been carried out based on the PCE10:ITIC blends. It is seen that suitable amount of DIO helps to increase the crystallization of the blended thin film. However, excessive DIO elevates the crystallization-induced phase separation and the domain size can exceed the exciton diffusion length, leading to efficiency drop. The addition of fullerene acceptor can improve the carrier transport of the blends, and its presence could retard the excessive phase separation induced by DIO additive. Under the joint optimization of the solvent additive and PCBM acceptor,the film morphology achieves a balance between crystallization and phase separation scales, the exciton diffusion and carrier transport are also optimized, and the short-circuit current(JSC) and fill factor(FF) of the device can be improved significantly.

关键词： Organic solar cells Morphology Solvent additive Crystallization-induced phase separation

CDK9-42 Translocation Promotes Alloresponse Predominantly via STAT1/IFN-γ Pathway

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CDK9-42 Translocation Promotes Alloresponse Predominantly vi...