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Seifner MS, Hu T, Snellman M, Jacobsson D, Deppert K, Messing ME, Dick KA. Insights into the Synthesis Mechanisms of Ag-Cu 3P-GaP Multicomponent Nanoparticles. ACS NANO 2023; 17:7674-7684. [PMID: 37017472 PMCID: PMC10134500 DOI: 10.1021/acsnano.3c00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
Metal-semiconductor nanoparticle heterostructures are exciting materials for photocatalytic applications. Phase and facet engineering are critical for designing highly efficient catalysts. Therefore, understanding processes occurring during the nanostructure synthesis is crucial to gain control over properties such as the surface and interface facets' orientations, morphology, and crystal structure. However, the characterization of nanostructures after the synthesis makes clarifying their formation mechanisms nontrivial and sometimes even impossible. In this study, we used an environmental transmission electron microscope with an integrated metal-organic chemical vapor deposition system to enlighten fundamental dynamic processes during the Ag-Cu3P-GaP nanoparticle synthesis using Ag-Cu3P seed particles. Our results reveal that the GaP phase nucleated at the Cu3P surface, and growth proceeded via a topotactic reaction involving counter-diffusion of Cu+ and Ga3+ cations. After the initial GaP growth steps, the Ag and Cu3P phases formed specific interfaces with the GaP growth front. GaP growth proceeded by a similar mechanism observed for the nucleation involving the diffusion of Cu atoms through/along the Ag phase toward other regions, followed by the redeposition of Cu3P at a specific Cu3P crystal facet, not in contact with the GaP phase. The Ag phase was essential for this process by acting as a medium enabling the efficient transport of Cu atoms away from and, simultaneously, Ga atoms toward the GaP-Cu3P interface. This study shows that enlightening fundamental processes is critical for progress in synthesizing phase- and facet-engineered multicomponent nanoparticles with tailored properties for specific applications, including catalysis.
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Affiliation(s)
- Michael S. Seifner
- Centre
for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
| | - Tianyi Hu
- Centre
for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
| | - Markus Snellman
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
| | - Daniel Jacobsson
- Centre
for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
- National
Center for High Resolution Electron Microscopy, Lund University, Box 124, 22100 Lund, Sweden
| | - Knut Deppert
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
| | - Maria E. Messing
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
- Solid
State Physics, Lund University, Box 118, 22100 Lund, Sweden
| | - Kimberly A. Dick
- Centre
for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden
- NanoLund, Lund University, Box
118, 22100 Lund, Sweden
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Biswas R, Ahmed I, Manna P, Mahata P, Dhayal RS, Singh A, Lahtinen J, Haldar KK. Facile Fabrication of Ni 9 S 8 /Ag 2 S Intertwined Structures for Oxygen and Hydrogen Evolution Reactions. Chempluschem 2023; 88:e202200320. [PMID: 36625467 DOI: 10.1002/cplu.202200320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/17/2022] [Indexed: 12/24/2022]
Abstract
Here, we report the fabrication of the unique intertwined Ni9 S8 /Ag2 S composite structure with hexagonal shape from their molecular precursors by one-pot thermal decomposition. Various spectroscopic and microscopic techniques were utilized to confirm the Ni9 S8 /Ag2 S intertwined structure. Powder X-ray Powder Diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis suggest that there is an enrichment of Ni9 S8 phase in Ni9 S8 /Ag2 S. The presence of Ag2 S in Ni9 S8 /Ag2 S improves the conductivity by reducing the interfacial energy and charge transfer resistance. When Ni9 S8 /Ag2 S is employed as an electrocatalyst for electrochemical oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activity, it requires a low overpotential of 152 mV for HER and 277 mV for OER to obtain the geometrical current density of 10 mA cm-2 , which is definitely superior to that of its components Ni9 S8 and Ag2 S. This work provides a simple design route to develop an efficient and durable electrocatalyst with outstanding OER and HER performance and the present catalyst (Ni9 S8 /Ag2 S) deserves as a potential candidate in the field of energy conversion systems.
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Affiliation(s)
| | - Imtiaz Ahmed
- Department of Chemistry, Central University of Punjab, Bathinda, 151401, India
| | - Priyanka Manna
- Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Partha Mahata
- Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Rajendra S Dhayal
- Department of Chemistry, Central University of Punjab, Bathinda, 151401, India
| | - Amol Singh
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Jouko Lahtinen
- Department of Applied Physics, Aalto University School of Science, 00076, Aalto, Finland
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3
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Evarestov RA, Panin AI, Tverjanovich YS. Argentophillic interactions in argentum chalcogenides: First principles calculations and topological analysis of electron density. J Comput Chem 2021; 42:242-247. [PMID: 33280142 DOI: 10.1002/jcc.26451] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 12/28/2022]
Abstract
The plasticity of Ag2 S and Ag2 Se crystals important for applications is associated mainly with AgAg metallophilic bonds, which are related to van der Waals interactions and therefore are not directed. This is demonstrated by the first principles DFT M06 LCAO calculations of Ag2 X (X = S, Se) crystals (periodic model) and hypothetical molecules Xn Ag2n (X = S, Se; n = 1, 2, 4) in gas phase (molecular model). A topological analysis of the calculated electron density, was performed both for periodic and molecular models of Ag2 X (X = S, Se). It was found that Ag-Ag interatomic distances are close in periodic and molecular models. The numerical values of electron density, its Laplacian, kinetic, and potential energy densities are also close in both models and confirm the existence of AgAg metallophilic bonds.
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Affiliation(s)
- Robert A Evarestov
- Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia.,Quantum Chemistry Department, Saint-Petersburg State University, St. Petersburg, Russia
| | - Andrej I Panin
- Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia
| | - Yuri S Tverjanovich
- Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russia.,Department of Laser Chemistry, Saint-Petersburg State University, St. Petersburg, Russia
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Guo R, Zhang S, Wen H, Ni Z, He Y, Yu T, You J. In situ grown CoS on nickel foam pre-deposited with sulphur as an efficient OER electrocatalyst. NEW J CHEM 2021. [DOI: 10.1039/d0nj05156j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The NiCo-150 composite electrode on the NF was prepared via a simple two-step electrodeposition method with outstanding OER performance with an overpotential of 145 mV at 10 mA cm−2 and 337 mV at 50 mA cm−2.
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Affiliation(s)
- Rui Guo
- School of Materials Science and Engineering
- Northeastern University
- Shenyang 110819
- China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
| | - Shengqi Zhang
- School of Materials Science and Engineering
- Northeastern University
- Shenyang 110819
- China
- School of Resources and Materials
| | - Hui Wen
- School of Materials Science and Engineering
- Northeastern University
- Shenyang 110819
- China
- School of Resources and Materials
| | - Zhiyuan Ni
- School of Materials Science and Engineering
- Northeastern University
- Shenyang 110819
- China
| | - Yan He
- School of Materials Science and Engineering
- Northeastern University
- Shenyang 110819
- China
- School of Resources and Materials
| | - Tao Yu
- School of Materials Science and Engineering
- Northeastern University
- Shenyang 110819
- China
- School of Resources and Materials
| | - Junhua You
- School of Materials Science and Engineering
- Shenyang University of Technology
- Shenyang 110870
- China
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5
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Bimetallic Co-Based (CoM, M = Mo, Fe, Mn) Coatings for High-Efficiency Water Splitting. MATERIALS 2020; 14:ma14010092. [PMID: 33379230 PMCID: PMC7795325 DOI: 10.3390/ma14010092] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/16/2022]
Abstract
Bimetallic cobalt (Co)-based coatings were prepared by a facile, fast, and low-cost electroless deposition on a copper substrate (CoFe, CoMn, CoMo) and characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy and X-ray diffraction analysis. Prepared coatings were thoroughly examined for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline solution (1 M potassium hydroxide, KOH) and their activity compared to that of Co and Ni coatings. All five coatings showed activity for both reactions, where CoMo and Co showed the highest activity for HER and OER, respectively. Namely, the highest HER current density was recorded at CoMo coating with low overpotential (61 mV) to reach a current density of 10 mA·cm−2. The highest OER current density was recorded at Co coating with a low Tafel slope of 60 mV·dec−1. Furthermore, these coatings proved to be stable under HER and OER polarization conditions.
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Zhang R, Esposito AM, Thornburg ES, Chen X, Zhang X, Philip MA, Magana A, Gewirth AA. Conversion of Co Nanoparticles to CoS in Metal-Organic Framework-Derived Porous Carbon during Cycling Facilitates Na 2S Reactivity in a Na-S Battery. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29285-29295. [PMID: 32490653 DOI: 10.1021/acsami.0c05370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Room-temperature sodium-sulfur batteries have attracted wide interest due to their high energy density and high natural abundance. Polysulfide dissolution and irreversible Na2S conversion are challenges to achieving high battery performance. Herein, we utilize a metal-organic framework-derived Co-containing nitrogen-doped porous carbon (CoNC) as a catalytic sulfur cathode host. A concentrated sodium electrolyte based on sodium bis(fluorosulfonyl)imide, dimethoxyethane, and bis(2,2,2-trifluoroethyl) ether is used to mitigate polysulfide dissolution. We tune the amount of Co present in the CoNC carbon host by acid washing. Significant improvement in reversible sulfur conversion and capacity retention is observed with a higher Co content in CoNC, with 600 mAh g-1 and 77% capacity retention for CoNC and 261 mAh g-1 and 56% capacity retention for acid-washed CoNC at cycle 50 at 80 mAh g-1. Post-mortem X-ray photoelectron spectroscopy, transmission electron microscopy, and selected area electron diffraction suggest that CoS is formed during cycling in place of Co nanoparticles and CoN4 sites. Raman spectroscopy suggests that CoS exhibits a catalytic effect on the oxidation of Na2S. Our findings provide insights into understanding the role Co-based catalysts play in sulfur batteries.
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Affiliation(s)
- Ruixian Zhang
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Anne Marie Esposito
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Eric S Thornburg
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Xinyi Chen
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Xueyong Zhang
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Maria A Philip
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Alexis Magana
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Andrew A Gewirth
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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