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Lin J, Kilani M, Baharfar M, Wang R, Mao G. Understanding the nanoscale phenomena of nucleation and crystal growth in electrodeposition. NANOSCALE 2024. [PMID: 39380552 DOI: 10.1039/d4nr02389g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
Electrodeposition is used at the industrial scale to make coatings, membranes, and composites. With better understanding of the nanoscale phenomena associated with the early stage of the process, electrodeposition has potential to be adopted by manufacturers of energy storage devices, advanced electrode materials, fuel cells, carbon dioxide capturing technologies, and advanced sensing electronics. The ability to conduct precise electrochemical measurements using cyclic voltammetry, chronoamperometry, and chronopotentiometry in addition to control of precursor composition and concentration makes electrocrystallization an attractive method to investigate nucleation and early-stage crystal growth. In this article, we review recent findings of nucleation and crystal growth behaviors at the nanoscale, paying close attention to those that deviate from the classical theories in various electrodeposition systems. The review affirms electrodeposition as a valuable method both for gaining new insights into nucleation and crystallization on surfaces and as a low-cost scalable technology for the manufacturing of advanced materials and devices.
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Affiliation(s)
- Jiancheng Lin
- School of Chemical Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, 2052, Australia.
| | - Mohamed Kilani
- School of Chemical Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, 2052, Australia.
| | - Mahroo Baharfar
- School of Chemical Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, 2052, Australia.
| | - Ren Wang
- School of Chemical Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, 2052, Australia.
| | - Guangzhao Mao
- School of Chemical Engineering, University of New South Wales (UNSW Sydney), Sydney, New South Wales, 2052, Australia.
- School of Engineering, Institute for Materials and Processes, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, UK
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2
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Wang Y, Wei M, Ding Q, Li H, Ma W. Identification of Intersite Distance Effects in Au-Ag Single-Atom Alloy Catalysts Using Single Nanoparticle Collision Electrochemistry. NANO LETTERS 2024. [PMID: 38620010 DOI: 10.1021/acs.nanolett.3c04006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Regulating the atomic density of single-atom alloys (SAAs) promotes the potential to significantly enhance the electrocatalytic activity. However, conventional methods for study on the electrocatalytic performance of SAAs versus the intersite distance demand exhaustive experiments and characterization. Herein, we present a combinatorial synthesis and analysis method to investigate the intersite distance effect of SAA electrocatalysts. We employ single-nanoparticle collision electrochemistry to realize in situ electrodeposition of a precisely tunable Au atomic density onto individual parent Ag nanoparticles, followed by instantaneous electrocatalytic measurement of the newborn Au-Ag SAAs. In this work, the utility of our method is confirmed by the identification of intersite distance effects of Au-Ag SAAs toward the oxygen reduction reaction. When the site distance between two neighboring Au atoms is 1.9 nm, Au-Ag SAAs exhibit optimal activity. This work provides a simple and efficient method for screening other SAA electrocatalysts with ideal intersite distance at the single-nanoparticle level.
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Affiliation(s)
- Yixiao Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Mengdan Wei
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Qingdan Ding
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Huimin Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
| | - Wei Ma
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People's Republic of China
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3
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Sun X, Cheng H, Li M, Chen J, Li D, Liu B, Jiang Y, Duan X, Hu J. Collision Electrochemical Synthesis of Metal Nanoparticles Using Electrons as Green Reducing Agent. ACS APPLIED MATERIALS & INTERFACES 2022; 14:57189-57196. [PMID: 36516981 DOI: 10.1021/acsami.2c18114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Synthesis of high-quality metal nanoparticles (NPs) is the premise toward their downstream diverse applications. Although some electrochemical synthesis strategies have been developed, the necessary use of high-concentration electrolyte solution as current pathway and reaction medium severely limits the colloidal stability of the growing NPs in the solution and their tunability in size and shape. Herein, we report a collision electrochemical method for the synthesis of metal NPs without the use of electrolyte solution. To this end, we designed an asymmetrical electrochemical cell to control the potential (i.e., to supply electrons) in the reaction system via a separated electrochemical cell, thereby enabling the electrochemical reaction occurring in an electrolyte-free growth solution. Consequently, this collision electrochemical method, using seed-mediated growth of NPs as examples, allows the synthesis of monodisperse homogeneous Au NPs and heterogeneous Pd- and Pt-coated Au NPs at a yield comparable to that achieved in common chemical synthesis. Furthermore, this method allows readily tailoring the morphology of the resultant metal NPs just by changing the concentration of the growth solution. Therefore, our green synthesis method is important for a variety of nanomaterials beyond metal NPs.
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Affiliation(s)
- Xuguang Sun
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Huan Cheng
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Moxia Li
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jiamei Chen
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Dong Li
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Bingwu Liu
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yuxiong Jiang
- School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Xidong Duan
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jiawen Hu
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, and College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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4
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Liu C, Ma Y, Xu Z, You Y, Bai S, Nan J, Wang L. Galvani Potential-Dependent Single Collision/Fusion Impacts at Liquid/Liquid Interface: Faradic or Capacitive? J Phys Chem B 2022; 126:9705-9714. [PMID: 36356196 DOI: 10.1021/acs.jpcb.2c05741] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A new subtype of nano-impacts by emulsion droplets via reorganization of the electric double layer (EDL) at the liquid/liquid interface (LLI) is reported. This subtype shows anodic, bipolar, and cathodic transient currents with a potential of zero charge (PZC) dependence, revealing the non-faradic characteristic of single fusion impacts. In addition, the absolute integrated mean charge is proportional to the Galvani potential at the ITIES, indicating that the EDL at the LLI may obey the discrete Helmholtz model. The exact PZC point is interpolated from the fitting curve, and the droplet size distribution is estimated from the integrated charge distribution. Moreover, the different values of Epzc between single fusion impacts of MgCl2 droplets and pure water droplets is due to the specific absorption between Mg2+ and antagonistic anion in the organic phase. The influence of the concentration of the supporting electrolyte is also investigated. The above work gives physicochemical insights into the EDL at the micropipette-supported LLI and provides potential application to measure micro/nanoscale heterogeneous media without catalytic, reactive, or charge-transfer activity via impact experiments at LLI.
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Affiliation(s)
- Cheng Liu
- School of Chemistry, South China Normal University, Guangzhou510006, China
| | - Yamin Ma
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510641, China
| | - Zhidan Xu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510641, China
| | - Yongtao You
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510641, China
| | - Silan Bai
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510641, China
| | - Junmin Nan
- School of Chemistry, South China Normal University, Guangzhou510006, China
| | - Lishi Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510641, China
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5
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Li H, Zhang X, Sun Z, Ma W. Rapid Screening of Bimetallic Electrocatalysts Using Single Nanoparticle Collision Electrochemistry. J Am Chem Soc 2022; 144:16480-16489. [PMID: 36037266 DOI: 10.1021/jacs.2c05299] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The pace of nanomaterial discovery for high-performance electrocatalysts could be accelerated by the development of efficient screening methods. However, conventional electrochemical characterization via drop-casting is inherently inaccurate and time-consuming, as such ensemble measurements are serially performed through nanocatalyst synthesis, morphological characterization, and performance testing. Herein, we propose a rapid electrochemical screening method for bimetallic electrocatalysts that combines nanoparticle (NP) preparation and performance testing at the single NP level, thus avoiding any inhomogeneous averaging contribution. We employed single NP collision electrochemistry to realize in situ electrodeposition of a precisely tunable Pt shell onto individual parent NPs, followed by instantaneous electrocatalytic measurement of the newborn bimetallic core-shell NPs. We demonstrated the utility of this approach by screening bimetallic Au-Pt NPs and Ag-Pt NPs, thereby exhibiting promising electrocatalytic activity at optimal atomic ratios for methanol oxidation and oxygen reduction reactions, respectively. This work provides a new insight for the rapid screening of other bimetallic electrocatalysts.
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Affiliation(s)
- Huimin Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xuanxuan Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zehui Sun
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Ma
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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6
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Park JH, Ahn H, Ahn HS. Single Entity Electrochemistry and Its Application to Nanomaterial Synthesis. Isr J Chem 2022. [DOI: 10.1002/ijch.202200026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joon Ho Park
- Department of Chemistry Yonsei University 50 Yonsei-ro, Seodaemun-gu Seoul 03722 Republic of Korea
| | - Hyokyum Ahn
- Department of Chemistry Yonsei University 50 Yonsei-ro, Seodaemun-gu Seoul 03722 Republic of Korea
| | - Hyun S. Ahn
- Department of Chemistry Yonsei University 50 Yonsei-ro, Seodaemun-gu Seoul 03722 Republic of Korea
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7
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Park JH, Jin SM, Lee E, Ahn HS. Electrochemical synthesis of core-shell nanoparticles by seed-mediated selective deposition. Chem Sci 2021; 12:13557-13563. [PMID: 34777775 PMCID: PMC8528034 DOI: 10.1039/d1sc03625d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 08/22/2021] [Indexed: 11/21/2022] Open
Abstract
Conventional solvothermal synthesis of core-shell nanoparticles results in them being covered with surfactant molecules for size control and stabilization, undermining their practicality as electrocatalysts. Here, we report an electrochemical method for the synthesis of core-shell nanoparticles directly on electrodes, free of surfactants. By implementation of selective electrodeposition on gold cores, 1st-row transition metal shells were constructed with facile and precise thickness control. This type of metal-on-metal core-shell synthesis by purely electrochemical means is the first of its kind. The applicability of the nanoparticle decorated electrodes was demonstrated by alkaline oxygen evolution catalysis, during which the Au-Ni example displayed stable catalysis with low overpotential.
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Affiliation(s)
- Joon Ho Park
- Department of Chemistry, Yonsei University 50 Yonsei-ro, Seodaemun-gu Seoul 03722 Republic of Korea
| | - Seon-Mi Jin
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST) 123 Cheomdangwagiro, Bukgu Gwangju Republic of Korea
| | - Eunji Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST) 123 Cheomdangwagiro, Bukgu Gwangju Republic of Korea
| | - Hyun S Ahn
- Department of Chemistry, Yonsei University 50 Yonsei-ro, Seodaemun-gu Seoul 03722 Republic of Korea
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8
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Defnet PA, Zhang B. Collision, Adhesion, and Oxidation of Single Ag Nanoparticles on a Polysulfide-Modified Microelectrode. J Am Chem Soc 2021; 143:16154-16162. [PMID: 34549950 DOI: 10.1021/jacs.1c07164] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the collision, adhesion, and oxidation behavior of single silver nanoparticles (Ag NPs) on a polysulfide-modified gold microelectrode. Despite its remarkable success in volume analysis for smaller Ag NPs, the method of NP-collision electrochemistry has failed to analyze particles greater than 50 nm due to uncontrollable collision behavior and incomplete NP oxidation. Herein, we describe the unique capability of an ultrathin polysulfide layer in controlling the collision behavior of Ag NPs by drastically improving their sticking probability on the electrode. The ultrathin sulfurous layer is formed on gold by sodium thiosulfate electro-oxidation and serves both as an adhesive interface for colliding NPs and as a preconcentrated reactive medium to chemically oxidize Ag to form Ag2S. Rapid particle dissolution is further promoted by the presence of bulk sodium thiosulfate serving as a Lewis base, which drastically improves the solubility of generated Ag2S by a factor of 1013. The combined use of polysulfide and sodium thiosulfate allows us to observe a 25× increase in NP detection frequency, a 3× increase in peak amplitude, and more complete oxidation for larger Ag NPs. By recognizing how volumetric analysis using transmission electron microscopy (TEM) may overestimate quasi-spherical NPs, we believe we can have full NP oxidation for particles up to 100 nm. By focusing on the electrode/solution interface for more effective NP-electrode contact, we expect that the knowledge learned from this study will greatly benefit future NP collision systems for mechanistic studies in single-entity electrochemistry as well as designing ultrasensitive biochemical sensors.
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Affiliation(s)
- Peter A Defnet
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Bo Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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9
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Komkova MA, Vetoshev KR, Andreev EA, Karyakin AA. Flow-electrochemical synthesis of Prussian Blue based nanozyme 'artificial peroxidase'. Dalton Trans 2021; 50:11385-11389. [PMID: 34612266 DOI: 10.1039/d1dt02107a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on fully electrochemical flow-through synthesis of Prussian Blue based nanozymes defeating peroxidase in terms of more than 200 times higher catalytic rate constant (k = 6 × 104 s-1). Being reagentless, reproducible, simple and scalable, the proposed approach blazes new trails for the electrosynthesis of functional conductive and electroactive nanomaterials.
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Affiliation(s)
- Maria A Komkova
- Chemistry faculty of M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia.
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10
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Operando analysis of the electrosynthesis of Ag2O nanocubes by scanning electrochemical microscopy. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.106950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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11
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Pryshchepa O, Pomastowski P, Buszewski B. Silver nanoparticles: Synthesis, investigation techniques, and properties. Adv Colloid Interface Sci 2020; 284:102246. [PMID: 32977142 DOI: 10.1016/j.cis.2020.102246] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 12/19/2022]
Abstract
The unique silver properties, especially in the form of nanoparticles (NPs), allow to utilize them in numerous applications. For instance, Ag NPs can be utilized for the production of electronic and solar energy harvesting devices, in advanced analytical techniques (NALDI, SERS), catalysis and photocatalysis. Moreover, the Ag NPs can be useful in medicine for bioimaging, biosensing as well as in antibacterial and anticancer therapies. The Ag NPs utilization requires comprehensive knowledge about their features regarding the synthesis approaches as well as exploitation conditions. Unfortunately, a large number of scientific articles provide only restricted information according to the objects under investigation. Additionally, the results could be affected by artifacts introduced with exploited equipment, the utilized technique or sample preparation stages. However, it is rather difficult to get information about problems, which may occur during the studies. Thus, the review provides information about novel trends in the Ag NPs synthesis, among which the physical, chemical, and biological approaches can be found. Basic information about approaches for the control of critical parameters of NPs, i.e. size and shape, was also revealed. It was shown, that the reducing agent, stabilizer, the synthesis environment, including trace ions, have a direct impact on the Ag NPs properties. Further, the capabilities of modern analytical techniques for Ag NPs and nanocomposites investigations were shown, among other microscopic (optical, TEM, SEM, STEM, AFM), spectroscopic (UV-Vis, IR, Raman, NMR, electron spectroscopy, XRD), spectrometric (MALDI-TOF MS, SIMS, ICP-MS), and separation (CE, FFF, gel electrophoresis) techniques were described. The limitations and possible artifacts of the techniques were mentioned. A large number of presented techniques is a distinguishing feature, which makes the review different from others. Finally, the physicochemical and biological properties of Ag NPs were demonstrated. It was shown, that Ag NPs features are dependent on their basic parameters, such as size, shape, chemical composition, etc. At the end of the review, the modern theories of the Ag NPs toxic mechanism were shown in a way that has never been presented before. The review should be helpful for scientists in their own studies, as it can help to prepare experiments more carefully.
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12
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Lee MW, Kwon DJ, Park J, Pyun JC, Kim YJ, Ahn HS. Electropolymerization in a confined nanospace: synthesis of PEDOT nanoparticles in emulsion droplet reactors. Chem Commun (Camb) 2020; 56:9624-9627. [PMID: 32815947 DOI: 10.1039/d0cc03834b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Poly(3,4-ethylenedioxythiophene) (PEDOT) is an important material widely used in electronics for its hole conducting property. A novel strategy for the synthesis of nanoparticulate PEDOT was developed by emulsion droplet electrochemistry. Taking advantage of the space confinement in emulsions, PEDOT nanoparticles were size controllable without use of a separate template. Potential applications were investigated by implementing the PEDOT nanoparticle decorated electrodes as a supercapacitor and a hole transport layer in an organic light emitting diode.
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Affiliation(s)
- Myoung Won Lee
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
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13
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Liu R, Liu B, Li QJ, Liu BB. High-Pressure Behaviors of Ag 2S Nanosheets: An in Situ High-Pressure X-Ray Diffraction Research. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1640. [PMID: 32825536 PMCID: PMC7559112 DOI: 10.3390/nano10091640] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/08/2020] [Accepted: 08/14/2020] [Indexed: 01/18/2023]
Abstract
An in situ high-pressure X-ray diffraction study was performed on Ag2S nanosheets, with an average lateral size of 29 nm and a relatively thin thickness. Based on the experimental data, we demonstrated that under high pressure, the samples experienced two different high-pressure structural phase transitions up to 29.4 GPa: from monoclinic P21/n structure (phase I, α-Ag2S) to orthorhombic P212121 structure (phase II) at 8.9 GPa and then to monoclinic P21/n structure (phase III) at 12.4 GPa. The critical phase transition pressures for phase II and phase III are approximately 2-3 GPa higher than that of 30 nm Ag2S nanoparticles and bulk materials. Additionally, phase III was stable up to the highest pressure of 29.4 GPa. Bulk moduli of Ag2S nanosheets were obtained as 73(6) GPa for phase I and 141(4) GPa for phase III, which indicate that the samples are more difficult to compress than their bulk counterparts and some other reported Ag2S nanoparticles. Further analysis suggested that the nanosize effect arising from the smaller thickness of Ag2S nanosheets restricts the relative position slip of the interlayer atoms during the compression, which leads to the enhancing of phase stabilities and the elevating of bulk moduli.
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Affiliation(s)
| | | | | | - Bing-Bing Liu
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; (R.L.); (B.L.); (Q.-J.L.)
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14
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Rempel SV, Kuznetsova YV, Rempel AA. Self-Assembly of Ag 2S Colloidal Nanoparticles Stabilized by MPS in Water Solution. ACS OMEGA 2020; 5:16826-16832. [PMID: 32685851 PMCID: PMC7364714 DOI: 10.1021/acsomega.0c01994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Self-assembly of colloidal Ag2S nanoparticles (NPs) was studied in the presence of (3-mercaptopropyl)trimethoxysilane (MPS). Solutions with different molar ratios of Ag2S/MPS were prepared. The appearance of nano- and microtubes was detected. Self-organized NPs were studied with optical microscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and high-resolution transmission electron microscopy (HRTEM). Silicon nuclear magnetic resonance spectroscopy (29Si NMR) was used to study polycondensation of MPS molecules. Geometrical parameters of the nano- and microtubes depended on the molar ratio of Ag2S/MPS. The scheme and mechanism of self-assembly of Ag2S NPs in nanotubes in the presence of MPS were proposed. The effect of MPS on the preservation of the initial stoichiometry of Ag2S NPs was discussed.
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Affiliation(s)
- Svetlana V. Rempel
- Institute
of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 91, Pervomaiskaya Street, 620990 Ekaterinburg, Russia
- Ural
Federal University, 19,
Mira Street, 620002 Ekaterinburg, Russia
| | - Yulia V. Kuznetsova
- Institute
of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 91, Pervomaiskaya Street, 620990 Ekaterinburg, Russia
| | - Andrey A. Rempel
- Institute
of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 91, Pervomaiskaya Street, 620990 Ekaterinburg, Russia
- Ural
Federal University, 19,
Mira Street, 620002 Ekaterinburg, Russia
- Institute
of Metallurgy, Ural Branch of the Russian Academy of Sciences, 101, Amundsena Street, 620016 Ekaterinburg, Russia
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15
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Exploring dynamic interactions of single nanoparticles at interfaces for surface-confined electrochemical behavior and size measurement. Nat Commun 2020; 11:2307. [PMID: 32385284 PMCID: PMC7210955 DOI: 10.1038/s41467-020-16149-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Accepted: 04/10/2020] [Indexed: 12/12/2022] Open
Abstract
With the development of new instruments and methodologies, the highly dynamic behaviors of nanoparticle at the liquid-solid interface have been studied. However, the dynamic nature of the electrochemical behavior of individual nanoparticles on the electrode interface is still poorly understood. Here, we generalize scaling relations to predict nanoparticle-electrode interactions by examining the adsorption energy of nanoparticles at an ultramicroelectrode interface. Based on the theoretical predictions, we investigate the interaction-modulated dynamic electrochemical behaviors for the oxidation of individual Ag nanoparticles. Typically, significantly distinct current traces are observed owing to the adsorption-mediated motion of Ag nanoparticles. Inspired by restraining the stochastic paths of particles in the vicinity of the electrode interface to produce surface-confined current traces, we successfully realize high-resolution size measurements of Ag nanoparticles in mixed-sample systems. This work offers a better understanding of dynamic interactions of nanoparticles at the electrochemical interface and displays highly valuable applications of single-entity electrochemistry. Single-entity electrochemistry has been proposed for studying properties of single nanoparticles (NPs). Here, the authors make use of adsorption-mediated motion of Ag NPs to take individual NP size measurements using electrochemical impacts with excellent agreement to standard imaging techniques.
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16
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Jin QQ, Zhang CY, Wang WN, Chen BJ, Ruan J, Qian HS. Recent Development on Controlled Synthesis of Metal Sulfides Hollow Nanostructures via Hard Template Engaged Strategy: A Mini-Review. CHEM REC 2020; 20:882-892. [PMID: 32319734 DOI: 10.1002/tcr.202000033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/29/2020] [Accepted: 04/06/2020] [Indexed: 02/01/2023]
Abstract
In this mini-review, we highlighted the recent progresses in the controlled synthesis of metal sulfides hollow nanostructures via hard template technique. After a brief introduction about the formation mechanism of the inorganic hollow nanostructures via hard template technique, the discussions primarily focused on the emerging development of metal sulfides hollow nanostructures. Various synthetic strategies were summarized concerning the use of the hard template engaged strategies to fabricate various metal sulfides hollow nanostructures, such as hydrothermal method, solvothermal method, ion-exchange, sulfidation or calcination etc. Finally, the perspectives and summaries have been presented to demonstrate that a facile synthetic technique would be widely used to fabricate metal sulfides hollow nanostructures with multi-shells and components.
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Affiliation(s)
- Qian-Qian Jin
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Chen-Yang Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Wan-Ni Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Ben-Jin Chen
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Juan Ruan
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Hai-Sheng Qian
- School of Biomedical Engineering, Anhui Medical University, Hefei, 230032, P. R. China.,Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei, 230032, P. R. China
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17
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Affiliation(s)
- Si-Min Lu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Yue-Yi Peng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Yi-Lun Ying
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Yi-Tao Long
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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