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galvanic replacement reaction for in situ fabrication of litchi-shaped heterogeneous liquid metal-Au nano-composite for radio-photothermal cancer therapy

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Bioactive Materials 2021年第3期6卷 602-612页

作者： Zhenhu Guo Jingsong Lu Dan Wang Wensheng Xie Yongjie Chi Jianzhong Xu Nonaka Takuya Junxin Zhang Wanling Xu Fei Gao Hong Wu Lingyun Zhao State Key Laboratory of Powder Metallurgy Powder Metallurgy Research InstituteCentral South UniversityChangshaHunan410083China Key Laboratory of Advanced Materials Ministry of Education of ChinaSchool of Materials Science and EngineeringTsinghua UniversityBeijing100084China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Research Center of Magnetic and Electronic Materials College of Materials Science and EngineeringZhejiang University of TechnologyHangzhouZhejiang310014China Department of Nanoengineering Chemical Engineering Programand Moores Cancer CenterUniversity of California San DiegoLa JollaCA92093United States The Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing100084China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing100083China Shaanxi University of Chinese Medicine Xi'anShanxi712046China

With tremendous research advances in biomedical application,liquid metals(LM)also offer fantastic chemistry for synthesis of novel ***,as a pioneering trial,litchi-shaped heterogeneous eutectic gallium indium-Au nanoparticles(EGaIn-Au NPs),served as effective radiosensitizer and photothermal agent for radio-photothermal cancer therapy,have been successfully prepared using in situ interfacial galvanic replacement *** enhanced photothermal conversion efficiency and boosted radio-sensitization effect could be achieved with the reduction of Au nanodots onto the eutectic gallium indium(EGaIn)NPs *** importantly,the growth of tumor could be effectively inhibited under the combined radio-photothermal therapy mediated by EGaIn-Au *** by this approach,in situ interfacial galvanic replacement reaction may open a novel strategy to fabricate LM-based nano-composite with advanced multi-functionalities.

关键词： Au nanodots Gallium galvanic replacement reaction Indium Radio-photothermal therapy

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Synthesis of Au-Ag alloy nanoparticles supported on silica gel via galvanic replacement reaction

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Progress in Natural Science:Materials International 2013年第3期23卷 317-325页

作者： Xiaoyan Liu Aiqin Wang Lin Li Tao Zhang Chung-Yuan Mou Jyh-Fu Lee Dalian Institute of Chemical Physics Chinese Academy of Sciences Department of Chemistry National Taiwan University National Synchrotron Radiation Research Center

Synthesis of supported Au-Ag bimetallic has attracted much attention since we found for the first time that Au and Ag had synergistic effect on CO oxidation and preferential CO oxidation in rich *** this work,the formation of Au-Ag alloy nanoparticles supported on silica gel by galvanic replacement reaction has been *** applied various characterizations including X-ray diffraction(XRD),transmission electronic microscopy(TEM),ultraviolet-visible spectroscopy(UV-vis),X-ray absorption spectroscopy(XAS) to characterize the formation process of Au-Ag *** the average particle sizes of the Au-Ag alloy nanoparticles obtained by the galvanic replacement reaction are relatively large comparing with that of loading Au first,the catalytic activity of the catalyst in preferential CO oxidation is almost the *** result manifested that the particle size effect of Au-Ag nanoparticles was not as tremendous as that of monometallic *** formation of Au-Ag alloy made it less sensitive to the particle size.

关键词： Gold Silver Alloy XAS galvanic replacement reaction

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Morphology-dependent structures and catalytic performances of Au nanostructures on Cu_2O nanocrystals synthesized by galvanic replacement reaction

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Journal of Energy Chemistry 2016年第6期25卷 1086-1091页

作者： Zhenhua Zhang Rui Song Tian Cao Weixin Huang Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics University of Science and Technology of China

Au nanostructures were prepared on uniform Cu2O octahedra and rhombic dodecahedra via the galvanic replacement reaction between HAuCl 4 and Cu2O. The compositions and structures were studied by Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), High-Resolution Transmission Electron Microscope (HRTEM), X-Ray Diffraction (XRD), X-Ray Absorption Spectroscopy (XAS), X-ray Photoelectron Spectroscopy (XPS) and in-situ DRIFTS spectroscopy of CO adsorption. Different from the formation of Au-Cu alloys on Cu2O cubes by the galvanic replacement reaction (ChemNanoMat 2 (2016) 861-865), metallic Au particles and positively-charged Au clusters form on Cu2O octahedra and rhombic dodecahedra at very small Au loadings and only metallic Au particles form at large Au loadings. Metallic Au particles on Cu2O octahedra and rhombic dodecahedra are more active in catalyzing the liquid phase aerobic oxidation reaction of benzyl alcohol than positively-charged Au clusters. These results demonstrate an obvious morphology effect of Cu2O nanocrystals on the liquid-solid interfacial reactions and prove oxide morphology as an effective strategy to tune the surface reactivity and catalytic performance. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

关键词： Au/Cu2O nanocomposites galvanic replacement reaction Liquid-solid interfacial reaction Crystal plane effect Aerobic oxidation of benzyl alcohol

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Chiral AuCu heterostructures with site-specific geometric control and tailored plasmonic chirality

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Science China Chemistry 2023年第11期66卷 3280-3289页

作者： Guizeng Yang Lichao Sun Yunlong Tao Qingqing Cheng Xuehao Sun Chuang Liu Qingfeng Zhang College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China

Rational design and construction of chiral-achiral hybrid structures are of great importance to realize the multifunctional complex chiral structures toward emerging technological applications. However, significant challenges remain due to the lack of fine control over the heterostructure. Here, we have developed a general bottom-up synthetic strategy for the site-selective growth of Cu nanodomains on intrinsically chiral Au nanocrystals. Chiral AuCu heterostructures with three distinct architectures were achieved by controlling the overgrowth of Cu nanodomains in a site-specific manner. The geometry-dependent plasmonic chirality of the heterostructures was demonstrated experimentally by circular dichroism spectroscopy and theoretically through finite-difference time-domain simulations. The site-specific geometric control of chiral AuCu heterostructures was also extended to employ anisotropic chiral Au nanoplates and nanorods as the building blocks. By virtue of the galvanic replacement reactions between metal ions and Cu atoms, chiral heterostructures with increasing architectural complexity and compositional diversity can be further achieved. The current work not only opens up a promising strategy to synthesize complex chiral hybrid nanostructures but also provides an important knowledge framework that guides the rational design of multifunctional chiral hybrid nanostructures toward chiroptical applications.

关键词： chiral nanomaterials AuCu heterostructures site-selective growth plasmonic chirality galvanic replacement reaction

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Deep eutectic solvent-induced synthesis of Ni-Fe catalyst with excellent mass activity and stability for water oxidation

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Green Energy & Environment 2023年第3期8卷 852-863页

作者： Ruichang Xue Mengwei Guo Zhuoming Wei Qibo Zhang Key Laboratory of Ionic Liquids Metallurgy Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming650093China State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province Kunming650093China

Ni-Fe bimetallic electrodes are currently recognized as a kind of benchmark transition metal-based oxygen evolution reaction(OER)*** synthesis of Ni-Fe bimetallic electrode materials with excellent catalytic activity and satisfied stability by a simple and low-cost route is still a big ***,well-defined Ni-Fe nanoparticles in-situ developed on a planar Fe substrate(Ni-Fe NPs/Fe)is fabricated via a facile one-step galvanic replacement reaction(GRR)carried out in an Ethaline-based deep eutectic solvent(DES).The prepared Ni-Fe NPs/Fe exhibits outstanding OER performance,which needs an overpotential of only 319 mV to drive a current density of 10 mA cm^(-2),with a small Tafel slope of 41.2 mV dec^(-1) in 1.0 mol L^(-1) KOH,high mass activity(up to 319.78 A g^(-1) at an overpotential of 300 mV)and robust durability for 200 ***,the Ni-Fe bimetallic oxygen-evolution electrode obtained from the Ethaline-based DES is catalytically more active and durable than that of its counterpart derived from the 4.2 mol L^(-1) NaCl aqueous *** reason for this is mainly related to the different morphology and surface state of the Ni-Fe catalysts obtained from these different solvent environments,particularly for the differences in phy-chemical properties,active species formed and deposition kinetics,offered by the Ethaline-based DES.

关键词： Ni-Fe catalysts galvanic replacement reaction Deep eutectic solvent Oxygen evolution reaction

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Pt-Te alloy nanowires towards formic acid electrooxidation reaction

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Journal of Energy Chemistry 2023年第10期85卷 481-489,I0013页

作者： Bin Sun Yu-Chuan Jiang Qing-Ling Hong Xue Liu Fu-Min Li Dong-Sheng Li Yun Yang Yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province School of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710062ShaanxiChina Nanomaterials and Chemistry Key Laboratory Wenzhou UniversityWenzhou 325035ZhejiangChina School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074HubeiChina College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002HubeiChina

The high-performance anodic electrocatalysts is pivotal for realizing the commercial application of the direct formic acid fuel *** this work,a simple polyethyleneimine-assisted galvanic replacement reaction is applied to synthesize the high-quality PtTe alloy nanowires(PtTe NW)by using Te NW as an efficient sacrificial *** existence of Te atoms separates the continuous Pt atoms,triggering a direct reaction pathway of formic acid electrooxidation reaction(FAEOR)at PtTe *** one-dimensional architecture and highly active sites have enabled PtTe NW to reveal outstanding electrocatalytic activity towards FAEOR with the mass/specific activities of 1091.25 mA mg^(-1)/45.34 A m^(-2)at 0.643 V potential,which are 44.72/23.16 and 20.26/11.75 times bigger than those of the commercial Pt and Pd nanoparticles,*** functional theory calculations reveal that Te atoms optimize the electronic structure of Pt atoms,which decreases the adsorption capacity of CO intermediate and simultaneously improves the durability of PtTe NW towards *** work provides the valuable insights into the synthesis and design of efficient Pt-based alloy FAEOR electrocatalysts.

关键词： Formic acid electrooxidation PtTe alloy nanowires galvanic replacement reaction reaction pathway Fuel cells

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Matryoshka-caged gold nanorods： Synthesis, plasmonic properties, and catalytic activity

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Nano Research 2016年第2期9卷 415-423页

作者： Wei Xiong Debabrata Sikdar Lim Wei Yap Pengzhen Guo Malin Premaratne Xinyong Li Wenlong Cheng Department of Chemical Engineering Monash University Clayton VIC 3800 Australia The Melbourne Centre for Nanofabrication 151 Wellington Road Clayton VIC 3168 Australia Key Laboratory of Industrial Ecology and Environmental Engineering and State Key Laboratory of Fine Chemicals School of Environmental Sciences and Technology Dalian University of Technology Dalian 116024 China Advanced Computing and Simulation Laboratory (AχL) Department of Electrical and Computer Systems Engineering Monash University Clayton VIC 3800 Australia

Matryoshka-caged gold nanorods （mCGNRs） were successfully synthesized by alternating between a seed-mediated silver-coating method and galvanic replacement reactions （GRRs）. As the number of matryoshka layers of the mCGNRs increased, the plasmon resonance peak broadened and was red-shifted, and the catalytic activity towards the reduction of 4-nitrophenol （4-NTP） increased. When mCGNRs with 6 layers were used as nanocatalysts in the reduction of 4-nitrophenol, the reaction rate coefficient was 5.2- and 3.7-times higher than that of the gold-nanorod- and caged-gold-nanorod-catalyzed reductions of 4-nitrophenol, respectively. In addition, the surface-plasmon-resonance-based absorption of light enhanced the catalytic performance of the mCGNRs. With the support of a polyurethane foam, the mCGNRs synthesized in this study can be applied as recydable heterogeneous catalysts for the reduction of 4-nitrophenol.

关键词： matryoshka-caged gold nanorods galvanic replacement reaction 4-nitrophenol catalysis surface plasmon resonance

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Preparation of a Pt-Ni_(2)P/NF catalyst for highly efficient hydrogen evolution using a magnetic field to promote Ni-Pt galvanic replacement

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Journal of Materials Science & Technology 2023年第11期142卷 144-151页

作者： Zhong Wang Shuang Yuan Tuo Zang Tengxiao Li Yudi Zhou Jiaqi Liu Tie Liu Kai Wang Qiang Wang School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang 110819China Institute for Frontier Technologies of Low-Carbon Steelmaking and Liaoning Province Engineering Research Center for Technologies of Low-Carbon Steelmaking Northeastern UniversityShenyang 110819China The State Key Lab of Rolling and Automation Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education)(Ministry of Education) Northeastern UniversityShenyang 110819China

The noble metal Pt is an ideal catalyst for promoting the hydrogen evolution reaction(HER)during the electrolysis of ***,Pt is also expensive and suffers from low utilization *** this work,a Pt-Ni_(2)P/NF nanorod catalyst with a low Pt loading was synthesized under different magnetic fields,and it was found that the application of a magnetic field can increase the rate of the galvanic replacement *** the magnetic field strength increases from 0 to 600 mT,the chemical reaction rate increases gradually,and the utilization rate of Pt increased by 2.3 times under 600 *** mechanism of the magnetic field-induced magnetohydrodynamic(MHD)effect on the galvanic replacement reaction was *** a 1 M KOH solution and at a current density of 10 mA cm^(-2),the overpotential of Pt-Ni_(2)P/NF prepared by applying a 600 mT magnetic field was as low as 15 mV and the Tafel slope was 37 mV dec^(-1),compared with values of 82 mV and 70 mV dec^(-1) for a specimen prepared without a magnetic ***,at an overpotential of 90 mV,the mass-based Pt activity of the former material was 12 times greater while its turnover frequency was 19 times *** work provides theoretical and technical knowledge expected to assist in the controllable preparation of materials in magnetic fields and the efficient utilization of metallic resources.

关键词： Magnetic field Regulation galvanic replacement reaction HER

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Nanostage Alloying of Metals in Liquid Phase

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Advances in Chemical Engineering and Science 2021年第1期11卷 105-140页

作者： Deblina Roy Tarasankar Pal Department of Chemistry National Institute of Technology Rourkela Odisha India Department of Chemical Sciences Auckland Park Kingsway Campus University of Johannesburg Johannesburg South Africa

Alloying of metals is known from antiquity. Alloy making i.e., homogenizing metals started in a “hit-or-miss” way. The 1st alloy from copper (Cu) and tin (Sn) was produced around 2500 BC and from then Bronze Age began. Subsequently iron (Fe) age started after the Bronze Age. Aluminium (Al) alloying was discovered much later because pure Al could not be recovered easily even though Al is the most abundant metal in the earth’s crust. Refining of Al is a very difficult job because of its strong affinity towards oxygen. To ease alloying, melting points (mp) of the individual constituents and reactivity of metal towards oxygen were the hurdles. Now understanding the thermodynamics of metal mixing has paved alloying. Periodic properties of elements concerning size, electronegativity, crystal structure, valency, lattice spacing, etc. are considered for alloying. In this feature article, more emphasis is given to Hume-Rothery rules in which the necessary parameters for alloying have been illustrated. Importantly standard electrode potential (E0) values, eutectic, phase diagram, size-related strain in metals, etc. have been looked into in the present discussion. One elegant example is Sn-Pb alloy, known as soft solder. Soft solder was in use for many years to connect metals and in electric circuitry. Low melting, flowability, and conductivity of soft solder had placed Sn-Pb alloy a unique position in industries, laboratories and even in cottage industries. However, toxic Pb volatilizes during soldering and hence soft solder is banned almost in all countries. We felt the need for a viable alternative to obtain soldering material and then silver (Ag) based highly conducting, an eco-friendly alloy of Sn resulted in from a high boiling liquid. The discovery engenders not only a new c

关键词： Alloy Nanoparticles Hume-Rothery Rules Oriented Attachment Ostwald Ripening Digestive Ripening galvanic replacement reaction Kirkendall Effect Silicone Oil High Entropy Alloys

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General Synthesis of 3D Metal/ZnOHeterostructureArrays on Zinc Substrate Based on galvanic replacement Principle

General Synthesis of 3D Metal/ZnOHeterostructureArrays on Zi...

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中国化学会第九届全国无机化学学术会议

作者： Kai Wang Weixin Zhang Zeheng Yang School of Chemistry and Chemical Engineering Anhui Key Laboratory of Controllable Chemical Reaction &Material Chemical EngineeringHefei University of Technology School of Chemistry and Chemical Engineering BeifangUniversityof Nationalities

Combining metal nanoparticles and semiconductor in nanoscale to form heterostructure is a powerful strategy for achieving advanced multiple functional ***,a galvanic replacement principle has been exploited to selectively fabricate 3D heterostructured M/ZnO（M =Cu,Cd,Co,Ag） nanomaterial on zinc substrate,establishing a general strategy for this kind of *** a typical example,the as-prepared 3D pine-like Cu/ZnOheterostructuredarray has been demonstrated as a promising photocatalystwithenhanced photocatalyticperformanceonthe degradation of methyl orange（MO） under visible light in contrast with *** existence of copper nanoparticleson Cu/ZnOheterostructures results in the red-shift of the surface plasmon resonance（SPR） peak,extending light absorption *** addition,the photoexcited electrons in the conduction band of ZnO can easily transfer from ZnO to copper nanoparticle due to its lower Fermi energy level,which provide an effective charge separation and promote photocatalytic activities.

关键词： Metal/ZnO Heterostructure galvanic replacement reaction Methyl orange Photocatalysis

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