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Yang F, Hu P, Yang FF, Chen B, Yin F, Hao K, Sun R, Gao L, Sun Z, Wang K, Yin Z. CNTs Bridged Basal-Plane-Active 2H-MoS 2 Nanosheets for Efficient Robust Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301468. [PMID: 37140080 DOI: 10.1002/smll.202301468] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/10/2023] [Indexed: 05/05/2023]
Abstract
2D 2H-phase MoS2 is promising for electrocatalytic applications because of its stable phase, rich edge sites, and large surface area. However, the pristine low-conductive 2H-MoS2 suffers from limited electron transfer and surface activity, which become worse after their highly likely aggregation/stacking and self-curling during applications. In this work, these issues are overcome by conformally attaching the intercalation-detonation-exfoliated, surface S-vacancy-rich 2H-MoS2 onto robust conductive carbon nanotubes (CNTs), which electrically bridge bulk electrode and local MoS2 catalysts. The optimized MoS2 /CNTs nanojunctions exhibit outstanding stable electroactivity (close to commercial Pt/C): a polarization overpotential of 79 mV at the current density of 10 mA cm-2 and the Tafel slope of 33.5 mV dec-1 . Theoretical calculations unveil the metalized interfacial electronic structure of MoS2 /CNTs nanojunctions, enhancing defective-MoS2 surface activity and local conductivity. This work provides guidance on rational design for advanced multifaceted 2D catalysts combined with robust bridging conductors to accelerate energy technology development.
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Affiliation(s)
- Fan Yang
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Ping Hu
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Fairy Fan Yang
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Bo Chen
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Fei Yin
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Ke Hao
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Ruiyan Sun
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Lili Gao
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Zhehao Sun
- Research School of Chemistry, The Australian National University, Canberra, ACT, 2601, Australia
| | - Kuaishe Wang
- State Local Joint Engineering Research Center for Functional Materials Processing, School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, P. R. China
| | - Zongyou Yin
- Research School of Chemistry, The Australian National University, Canberra, ACT, 2601, Australia
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2
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Cao Q, Cheng Z, Dai J, Sun T, Li G, Zhao L, Yu J, Zhou W, Lin J. Enhanced Hydrogen Evolution Reaction over Co Nanoparticles Embedded N-Doped Carbon Nanotubes Electrocatalyst with Zn as an Accelerant. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204827. [PMID: 36148861 DOI: 10.1002/smll.202204827] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Indexed: 06/16/2023]
Abstract
The rational design for transition metals-based carbon nano-materials as efficient electrocatalysts still remains a crucial challenge for economical electrochemical hydrogen production. Carbon nanotubes (CNTs) as attractive electrocatalysts are typically activated by non-metal dopant to promote catalytic performance. Metals doping or metal/non-metal co-doping of CNTs, however, are rarely explored. Herein, this work rationally designs bimetal oxide templates of ZnCo2 O4 for heterogeneously doping Zn and N into Co nanoparticles embedded carbon nanotubes (Co@Zn-N-CNTs). During the formation of CNTs, Zn atoms volatilize from ZnCo2 O4 and in situ dope into the carbon skeleton. In particular, owing to the low electronegativity of Zn, the electrons aptly transfer from Zn to carbon atoms, which generate a high electron density for the carbon layers and offer more preponderant catalytic sites for hydrogen reduction. The Co@Zn-N-CNTs catalyst exhibits enhanced hydrogen evolution reaction activity in 0.5 m H2 SO4 electrolyte, with a low onset potential of -20 mV versus RHE at 1 mA cm-2 , an overpotential of 67 mV at 10 mA cm-2 , a small Tafel slope of 52.1 mV dec-1 , and persistent long-term stability. This study provides brand-new insights into the utilization of Zn as electronic regulator and activity promoter toward the design of high-efficiency electrocatalysts.
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Affiliation(s)
- Qing Cao
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195, Berlin, Germany
| | - Zhaoyang Cheng
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Jiajun Dai
- Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195, Berlin, Germany
| | - Tianxiao Sun
- Institute Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, 12489, Berlin, Germany
| | - Guixiang Li
- Department Novel Materials and Interfaces for Photovoltaic Solar Cells, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, 12489, Berlin, Germany
| | - Lili Zhao
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Jiayuan Yu
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Weijia Zhou
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, P. R. China
| | - Jianjian Lin
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
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Femtosecond Laser-Ablated Copper Surface as a Substrate for a MoS 2-Based Hydrogen Evolution Reaction Electrocatalyst. MATERIALS 2022; 15:ma15113926. [PMID: 35683217 PMCID: PMC9182345 DOI: 10.3390/ma15113926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/19/2022] [Accepted: 05/30/2022] [Indexed: 12/02/2022]
Abstract
One of the methods to improve the performance of a heterogeneous electrocatalyst is the dispersion of a catalytic material on a suitable substrate. In this study, femtosecond laser ablation was used to prepare very rough but also ordered copper surfaces consisting of vertical, parallel ridges. Then, a molybdenum sulfide coating was electrochemically deposited onto these surfaces. It was observed by profilometry that the average roughness of the surface after coating with MoS2 had decreased, but the developed surface area still remained significantly larger than the projected surface area. The electrodes were then used as an electrocatalyst for the hydrogen evolution reaction in acidic media. These were highly efficient, reaching 10 mA cm−2 of HER current at a −181 mV overpotential and a Tafel slope of ~39 mV dec−1. Additionally, scanning electrochemical microscopy was used to observe whether hydrogen evolution would preferentially occur in certain spots, for example, on the peaks, but the obtained results suggest that the entire surface is active. Finally, the electrochemical impedance spectroscopy data showed the difference in the double-layer capacitance between the ablated and non-ablated surfaces (up to five times larger) as well as the parameters that describe the improved catalytic activity of fs-Cu/MoS2 electrodes.
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4
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Chen T, Ye B, Dai H, Qin S, Zhang Y, Yang Q. Ni-doped CoP/Co2P nanospheres as highly efficient and stable hydrogen evolution catalysts in acidic and alkaline mediums. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Giuffredi G, Asset T, Liu Y, Atanassov P, Di Fonzo F. Transition Metal Chalcogenides as a Versatile and Tunable Platform for Catalytic CO 2 and N 2 Electroreduction. ACS MATERIALS AU 2021; 1:6-36. [PMID: 36855615 PMCID: PMC9888655 DOI: 10.1021/acsmaterialsau.1c00006] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Group VI transition metal chalcogenides are the subject of increasing research interest for various electrochemical applications such as low-temperature water electrolysis, batteries, and supercapacitors due to their high activity, chemical stability, and the strong correlation between structure and electrochemical properties. Particularly appealing is their utilization as electrocatalysts for the synthesis of energy vectors and value-added chemicals such as C-based chemicals from the CO2 reduction reaction (CO2R) or ammonia from the nitrogen fixation reaction (NRR). This review discusses the role of structural and electronic properties of transition metal chalcogenides in enhancing selectivity and activity toward these two key reduction reactions. First, we discuss the morphological and electronic structure of these compounds, outlining design strategies to control and fine-tune them. Then, we discuss the role of the active sites and the strategies developed to enhance the activity of transition metal chalcogenide-based catalysts in the framework of CO2R and NRR against the parasitic hydrogen evolution reaction (HER); leveraging on the design rules applied for HER applications, we discuss their future perspective for the applications in CO2R and NRR. For these two reactions, we comprehensively review recent progress in unveiling reaction mechanisms at different sites and the most effective strategies for fabricating catalysts that, by exploiting the structural and electronic peculiarities of transition metal chalcogenides, can outperform many metallic compounds. Transition metal chalcogenides outperform state-of-the-art catalysts for CO2 to CO reduction in ionic liquids due to the favorable CO2 adsorption on the metal edge sites, whereas the basal sites, due to their conformation, represent an appealing design space for reduction of CO2 to complex carbon products. For the NRR instead, the resemblance of transition metal chalcogenides to the active centers of nitrogenase enzymes represents a powerful nature-mimicking approach for the design of catalysts with enhanced performance, although strategies to hinder the HER must be integrated in the catalytic architecture.
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Affiliation(s)
- Giorgio Giuffredi
- Center
for Nano Science and Technology, Istituto
Italiano di Tecnologia (IIT@Polimi), Via Pascoli 70/3, 20133 Milano, Italy,Department
of Energy, Politecnico di Milano, Via Lambruschini 4, 20156 Milano, Italy
| | - Tristan Asset
- Department
of Chemical & Biomolecular Engineering and National Fuel Cell
Research Center, University of California, Irvine, California 92697-2580, United States
| | - Yuanchao Liu
- Department
of Chemical & Biomolecular Engineering and National Fuel Cell
Research Center, University of California, Irvine, California 92697-2580, United States
| | - Plamen Atanassov
- Department
of Chemical & Biomolecular Engineering and National Fuel Cell
Research Center, University of California, Irvine, California 92697-2580, United States
| | - Fabio Di Fonzo
- Center
for Nano Science and Technology, Istituto
Italiano di Tecnologia (IIT@Polimi), Via Pascoli 70/3, 20133 Milano, Italy,
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6
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Liu Y, Wang H, Liu F, Kang J, Qiu F, Ke C, Huang Y, Han S, Zhang F, Zhuang X. Self-Assembly Approach Towards MoS 2 -Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution. Chemistry 2021; 27:2155-2164. [PMID: 33165980 DOI: 10.1002/chem.202004371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/29/2020] [Indexed: 11/09/2022]
Abstract
Transition metal-based nanoparticle-embedded carbon materials have received increasing attention for constructing next-generation electrochemical catalysts for energy storage and conversion. However, designing hybrid carbon materials with controllable hierarchical micro/mesoporous structures, excellent dispersion of metal nanoparticles, and multiple heteroatom-doping remains challenging. Here, a novel pyridinium-containing ionic hypercrosslinked micellar frameworks (IHMFs) prepared from the core-shell unimicelle of s-poly(tert-butyl acrylate)-b-poly(4-bromomethyl) styrene (s-PtBA-b-PBMS) and linear poly(4-vinylpyridine) were used as self-sacrificial templates for confined growth of molybdenum disulfide (MoS2 ) inside cationic IHMFs through electrostatic interaction. After pyrolysis, MoS2 -anchored nitrogen-doped porous carbons possessing tunable hierarchical micro/mesoporous structures and favorable distributions of MoS2 nanoparticles exhibited excellent electrocatalytic activity for hydrogen evolution reaction as well as small Tafel slope of 66.7 mV dec-1 , low onset potential, and excellent cycling stability under acidic condition. Crucially, hierarchical micro/mesoporous structure and high surface area could boost their catalytic hydrogen evolution performance. This approach provides a novel route for preparation of micro/mesoporous hybrid carbon materials with confined transition metal nanoparticles for electrochemical energy conversion.
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Affiliation(s)
- Yuping Liu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
| | - Hongxing Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
| | - Fengru Liu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
| | - Jialing Kang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
| | - Feng Qiu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
| | - Changchun Ke
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yu Huang
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Sheng Han
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
| | - Fan Zhang
- Themeso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites &, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xiaodong Zhuang
- Themeso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites &, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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7
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Amorphous CoMoSx/N-Doped Carbon Hybrid with 3D Networks as Electrocatalysts for Hydrogen Evolution. Catal Letters 2020. [DOI: 10.1007/s10562-020-03428-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Giuffredi G, Mezzetti A, Perego A, Mazzolini P, Prato M, Fumagalli F, Lin YC, Liu C, Ivanov IN, Belianinov A, Colombo M, Divitini G, Ducati C, Duscher G, Puretzky AA, Geohegan DB, Di Fonzo F. Non-Equilibrium Synthesis of Highly Active Nanostructured, Oxygen-Incorporated Amorphous Molybdenum Sulfide HER Electrocatalyst. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004047. [PMID: 33090682 DOI: 10.1002/smll.202004047] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/08/2020] [Indexed: 06/11/2023]
Abstract
Molybdenum sulfide emerged as promising hydrogen evolution reaction (HER) electrocatalyst thanks to its high intrinsic activity, however its limited active sites exposure and low conductivity hamper its performance. To address these drawbacks, the non-equilibrium nature of pulsed laser deposition (PLD) is exploited to synthesize self-supported hierarchical nanoarchitectures by gas phase nucleation and sequential attachment of defective molybdenum sulfide clusters. The physics of the process are studied by in situ diagnostics and correlated to the properties of the resulting electrocatalyst. The as-synthesized architectures have a disordered nanocrystalline structure, with nanodomains of bent, defective S-Mo-S layers embedded in an amorphous matrix, with excess sulfur and segregated molybdenum particles. Oxygen incorporation in this structure fosters the creation of amorphous oxide/oxysulfide nanophases with high electrical conductivity, enabling fast electron transfer to the active sites. The combined effect of the nanocrystalline pristine structure and the surface oxidation enhances the performance leading to small overpotentials, very fast kinetics (35.1 mV dec-1 Tafel slope) and remarkable long-term stability for continuous operation up to -1 A cm-2. This work shows possible new avenues in catalytic design arising from a non-equilibrium technique as PLD and the importance of structural and chemical control to improve the HER performance of MoS-based catalysts.
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Affiliation(s)
- Giorgio Giuffredi
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
- Department of Energy, Politecnico di Milano, Via Lambruschini 4, Milano, 20156, Italy
| | - Alessandro Mezzetti
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
| | - Andrea Perego
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
- Department of Energy, Politecnico di Milano, Via Lambruschini 4, Milano, 20156, Italy
| | - Piero Mazzolini
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16163, Italy
| | - Francesco Fumagalli
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
| | - Yu-Chuan Lin
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Chenze Liu
- Department of Material Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA
| | - Ilia N Ivanov
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Alex Belianinov
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Massimo Colombo
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16130, Italy
| | - Giorgio Divitini
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Caterina Ducati
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Gerd Duscher
- Department of Material Science and Engineering, University of Tennessee, Knoxville, TN, 37996, USA
| | - Alexander A Puretzky
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - David B Geohegan
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Fabio Di Fonzo
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
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9
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Structure of Nanocrystalline, Partially Disordered MoS2+δ Derived from HRTEM—An Abundant Material for Efficient HER Catalysis. Catalysts 2020. [DOI: 10.3390/catal10080856] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Molybdenum sulfides (MoSx, x > 2) are promising catalysts for the hydrogen evolution reaction (HER) that show high hydrogen evolution rates and potentially represent an abundant alternative to platinum. However, a complete understanding of the structure of the most active variants is still lacking. Nanocrystalline MoS2+δ was prepared by a solvothermal method and immobilized on graphene. The obtained electrodes exhibit stable HER current densities of 3 mA cm−2 at an overpotential of ~200 mV for at least 7 h. A structural analysis of the material by high-resolution transmission electron microscopy (HRTEM) show partially disordered nanocrystals of a size between 5–10 nm. Both X-ray and electron diffraction reveal large fluctuations in lattice spacing, where the average c-axis stacking is increased and the in-plane lattice parameter is locally reduced in comparison to the layered structure of crystalline MoS2. A three-dimensional structural model of MoS2+δ could be derived from the experiments, in which [Mo2S12]2− and [Mo3S13]2− clusters as well as disclinations represent the typical defects in the ideal MoS2 structure. It is suggested that the partially disordered nanostructure leads to a high density of coordinatively modified Mo sites with lower Mo–Mo distances representing the active sites for HER catalysis, and, that these structural features are more important than the S:Mo ratio for the activity.
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10
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Juan P, Liang J, Chen T, Zhang Q, Peng W, Li Y, Zhang F, Fan X. Sulfur-Rich Molybdenum Sulfide Grown on Porous N-Doped Graphene for Efficient Hydrogen Evolution. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00388] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Peng Juan
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Junmei Liang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Tao Chen
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Qicheng Zhang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Wenchao Peng
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yang Li
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Fengbao Zhang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Xiaobin Fan
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
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11
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Phan-Quang GC, Yang Z, Koh CSL, Sim HYF, Leong SX, Ling XY. Plasmonic-induced overgrowth of amorphous molybdenum sulfide on nanoporous gold: An ambient synthesis method of hybrid nanoparticles with enhanced electrocatalytic activity. J Chem Phys 2019; 151:244709. [PMID: 31893908 DOI: 10.1063/1.5130649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Hybrid materials of earth abundant transition metal dichalcogenides and noble metal nanoparticles, such as molybdenum sulfide (MoSx) and gold nanoparticles, exhibit synergistic effects that can enhance electrocatalytic reactions. However, most current hybrid MoSx-gold synthesis requires an energy intensive heat source of >500 °C or chemical plating to achieve deposition of MoSx on the gold surface. Herein, we demonstrate the direct overgrowth of MoSx over colloidal nanoporous gold (NPG), conducted feasibly under ambient conditions, to form hybrid particles with enhanced electrocatalytic performance toward hydrogen evolution reaction. Our strategy exploits the localized surface plasmon resonance-mediated photothermal heating of NPG to achieve >230 °C surface temperature, which induces the decomposition of the (NH4)2MoS4 precursor and direct overgrowth of MoSx over NPG. By tuning the concentration ratio between the precursor and NPG, the amount of MoSx particles deposited can be systematically controlled from 0.5% to 2% of the Mo/(Au + Mo) ratio. Importantly, we find that the hybrid particles exhibit higher bridging and an apical S to terminal S atomic ratio than pure molybdenum sulfide, which gives rise to their enhanced electrocatalytic performance for hydrogen evolution reaction. We demonstrate that hybrid MoSx-NPG exhibits >30 mV lower onset potential and a 1.7-fold lower Tafel slope as compared to pure MoSx. Our methodology provides an energy- and cost-efficient synthesis pathway, which can be extended to the synthesis of various functional hybrid structures with unique properties for catalysis and sensing applications.
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Affiliation(s)
- Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Zhe Yang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Charlynn Sher Lin Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Howard Yi Fan Sim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Shi Xuan Leong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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12
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Tan J, Mei Y, Shen H, Liu H, Azhagan T, Song W, Thomas T, Liu J, Yang M, Gao M. Experimental and Theoretical Insights of MoS
2
/Mo
3
N
2
Nanoribbon‐Electrocatalysts for Efficient Hydrogen Evolution Reaction. ChemCatChem 2019. [DOI: 10.1002/cctc.201901874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Junbin Tan
- State Key Laboratory of Heavy Oil Processing and Beijing Key Lab of Oil & Gas Pollution ControlChina University of Petroleum Beijing 102249 P. R. China
- Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Ningbo 315201 P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yahui Mei
- State Key Laboratory of Heavy Oil Processing and Beijing Key Lab of Oil & Gas Pollution ControlChina University of Petroleum Beijing 102249 P. R. China
| | - Hangjia Shen
- Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Ningbo 315201 P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Honghong Liu
- Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Ningbo 315201 P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Tamil Azhagan
- Department of Metallurgical and Materials Engineering, and DST Solar Energy Harnessing Center (An Energy Consortium)Indian Institute of Technology Madras Tamil Nadu 600036 India
| | - Weiyu Song
- State Key Laboratory of Heavy Oil Processing and Beijing Key Lab of Oil & Gas Pollution ControlChina University of Petroleum Beijing 102249 P. R. China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, and DST Solar Energy Harnessing Center (An Energy Consortium)Indian Institute of Technology Madras Tamil Nadu 600036 India
| | - Jian Liu
- State Key Laboratory of Heavy Oil Processing and Beijing Key Lab of Oil & Gas Pollution ControlChina University of Petroleum Beijing 102249 P. R. China
| | - Minghui Yang
- Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Ningbo 315201 P. R. China
- Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Manglai Gao
- State Key Laboratory of Heavy Oil Processing and Beijing Key Lab of Oil & Gas Pollution ControlChina University of Petroleum Beijing 102249 P. R. China
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13
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Park JS, Kim JK, Hong JH, Cho JS, Park SK, Kang YC. Advances in the synthesis and design of nanostructured materials by aerosol spray processes for efficient energy storage. NANOSCALE 2019; 11:19012-19057. [PMID: 31410433 DOI: 10.1039/c9nr05575d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The increasing demand for energy storage has motivated the search for highly efficient electrode materials for use in rechargeable batteries with enhanced energy density and longer cycle life. One of the most promising strategies for achieving improved battery performance is altering the architecture of nanostructured materials employed as electrode materials in the energy storage field. Among numerous synthetic methods suggested for the fabrication of nanostructured materials, aerosol spray techniques such as spray pyrolysis, spray drying, and flame spray pyrolysis are reliable, as they are facile, cost-effective, and continuous processes that enable the synthesis of nanostructured electrode materials with desired morphologies and compositions with controlled stoichiometry. The post-treatment of spray-processed powders enables the fabrication of oxide, sulfide, and selenide nanostructures hybridized with carbonaceous materials including amorphous carbon, reduced graphene oxide, carbon nanotubes, etc. In this article, recent progress in the synthesis of nanostructured electrode materials by spray processes and their general formation mechanisms are discussed in detail. A brief introduction to the working principles of each spray process is given first, and synthetic strategies for the design of electrode materials for lithium-ion, sodium-ion, lithium-sulfur, lithium-selenium, and lithium-oxygen batteries are discussed along with some examples. This analysis sheds light on the synthesis of nanostructured materials by spray processes and paves the way toward the design of other novel and advanced nanostructured materials for high performance electrodes in rechargeable batteries of the future.
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Affiliation(s)
- Jin-Sung Park
- Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea.
| | - Jin Koo Kim
- Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea.
| | - Jeong Hoo Hong
- Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea.
| | - Jung Sang Cho
- Department of Engineering Chemistry, Chungbuk National University, Chungdae-ro 1, Seowon-gu, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Seung-Keun Park
- Department of Chemical Engineering, Kongju National University, Budae-dong 275, Cheonan, Chungnam 314-701, Republic of Korea
| | - Yun Chan Kang
- Department of Materials Science and Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea.
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14
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Ding R, Wang M, Wang X, Wang H, Wang L, Mu Y, Lv B. N-Doped amorphous MoS x for the hydrogen evolution reaction. NANOSCALE 2019; 11:11217-11226. [PMID: 31157804 DOI: 10.1039/c9nr02717c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, the functions of a N dopant in crystalline MoS2 catalysts during the electrochemical hydrogen evolution reaction (HER) were reported via a combined experimental and first-principles approach. However, studies on the N doping of amorphous MoSx, which is a more active catalyst, have not been reported to date. In this study, via a simple method, we fabricated N-doped amorphous MoSx for the first time and studied the correlations between the N dopant and the HER performance. Via X-ray photoelectron spectroscopy and theoretical formation energy calculations, we have found that a N dopant in basal plane S2- plays a very important role in the improvement of the HER performance and remains stable during this dynamic transformation process. A N dopant in basal plane S2- can increase the number of active sites toward the HER and enhance the conductivity of the catalysts as well as a N dopant in c-MoS2. In addition to this, the first-principles calculations further suggested that a N dopant in basal plane S2- could improve the activity of unsaturated MoV active sites by bringing its hydrogen adsorption free energy closer to zero. As a result, N-doped amorphous MoSx possesses an overpotential of 143 mV at 10 mA cm-2 and a Tafel slope of 57 mV dec-1, much better than those of a-MoSx. These results provide useful insights for the future development of nonmetal-doped MoSx catalysts in the HER.
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Affiliation(s)
- Ruimin Ding
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
| | - Mengchao Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
| | - Xianfen Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
| | - Huixiang Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
| | - Liancheng Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
| | - Yuewen Mu
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
| | - Baoliang Lv
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
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15
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Zhou M, Sun Q, Shen Y, Ma Y, Wang Z, Zhao C. Fabrication of 3D microporous amorphous metallic phosphides for high-efficiency hydrogen evolution reaction. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.160] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Wang S, Jang H, Wang J, Wu Z, Liu X, Cho J. Cobalt-Tannin-Framework-Derived Amorphous Co-P/Co-N-C on N, P Co-Doped Porous Carbon with Abundant Active Moieties for Efficient Oxygen Reactions and Water Splitting. CHEMSUSCHEM 2019; 12:830-838. [PMID: 30614224 DOI: 10.1002/cssc.201802909] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 12/31/2018] [Indexed: 06/09/2023]
Abstract
It remains a tremendous challenge to develop a low-cost, earth-abundant, and efficient catalyst with multifunctional activities for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). Herein, a facile and scalable avenue was developed to prepare amorphous Co-P/Co-N-C supported on N, P co-doped porous carbon (Co-P/Co-N-C/NPC) with a large specific surface area (1462.9 m2 g-1 ) and abundant reactive sites including Co-P, Co-N and NPC. The prepared electrocatalyst exhibits outstanding catalytic performance for HER (η=234 mV at 10 mA cm-2 ), OER (η=374 mV at 10 mA cm-2 ), and ORR (E1/2 =0.89 V, vs. reversible hydrogen electrode). Benefiting from the excellent HER performance and outstanding OER activity, the Co-P/Co-N-C/NPC delivers a current density of 10 mA cm-2 for overall water splitting at a cell voltage of 1.59 V, which is comparable with the IrO2 -Pt/C couple electrode.
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Affiliation(s)
- Shuai Wang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, P.R. China
| | - Haeseong Jang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
| | - Jia Wang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, P.R. China
| | - Zexing Wu
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, P.R. China
| | - Xien Liu
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, P.R. China
| | - Jaephil Cho
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
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17
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Li Y, Yang P, Wang B, Liu Z. Amorphous Ni x Co y P-supported TiO 2 nanotube arrays as an efficient hydrogen evolution reaction electrocatalyst in acidic solution. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:62-70. [PMID: 30680279 PMCID: PMC6334790 DOI: 10.3762/bjnano.10.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 11/20/2018] [Indexed: 06/09/2023]
Abstract
Bimetallic phosphides have been attracting increasing attention due to their synergistic effect for improving the hydrogen evolution reaction as compared to monometallic phosphides. In this work, NiCoP modified hybrid electrodes were fabricated by a one-step electrodeposition process with TiO2 nanotube arrays (TNAs) as a carrier. X-ray diffraction, transmission electron microscopy, UV-vis diffuse reflection spectroscopy, X-ray photoelectron spectroscopy and scanning transmission electron microscopy/energy-dispersive X-ray spectroscopy were used to characterize the physiochemical properties of the samples. The electrochemical performance was investigated by cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy. We show that after incorporating Co into Ni-P, the resulting Ni x Co y P/TNAs present enhanced electrocatalytic activity due to the improved electron transfer and increased electrochemically active surface area (ECSA). In 0.5 mol L-1 H2SO4 electrolyte, the Ni x Co y P/TNAs (x = 3.84, y = 0.78) demonstrated an ECSA value of 52.1 mF cm-2, which is 3.8 times that of Ni-P/TNAs (13.7 mF cm-2). In a two-electrode system with a Pt sheet as the anode, the Ni x Co y P/TNAs presented a bath voltage of 1.92 V at 100 mA cm-2, which is an improvment of 79% over that of 1.07 V at 10 mA cm-2.
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Affiliation(s)
- Yong Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China
| | - Peng Yang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China
| | - Bin Wang
- Engineered Multifunctional Composites (EMC), Knoxville, Tennessee 37934, USA
| | - Zhongqing Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China
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18
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Leng J, Wang Z, Wang J, Wu HH, Yan G, Li X, Guo H, Liu Y, Zhang Q, Guo Z. Advances in nanostructures fabricated via spray pyrolysis and their applications in energy storage and conversion. Chem Soc Rev 2019; 48:3015-3072. [DOI: 10.1039/c8cs00904j] [Citation(s) in RCA: 195] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review provides insight into various nanostructures designed by spray pyrolysis and their applications in energy storage and conversion.
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Affiliation(s)
- Jin Leng
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Zhixing Wang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Jiexi Wang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
- State Key Laboratory for Powder Metallurgy
| | - Hong-Hui Wu
- Department of Chemistry
- University of Nebraska-Lincoln
- Lincoln
- USA
| | - Guochun Yan
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Xinhai Li
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Huajun Guo
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Yong Liu
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
| | - Qiaobao Zhang
- Department of Materials Science and Engineering
- College of Materials
- Xiamen University
- Xiamen
- P. R. China
| | - Zaiping Guo
- Institute for Superconducting and Electronic Materials
- Australian Institute for Innovative Materials
- University of Wollongong
- North Wollongong 2522
- Australia
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19
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Wu PR, Liu Z, Cheng ZL. Growth of MoS 2 Nanotubes Templated by Halloysite Nanotubes for the Reduction of Friction in Oil. ACS OMEGA 2018; 3:15002-15008. [PMID: 31458166 PMCID: PMC6644075 DOI: 10.1021/acsomega.8b02349] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 10/19/2018] [Indexed: 06/01/2023]
Abstract
One-dimensional MoS2 nanotubes with the specific surface area of 89.34 m2/g and the average pore size of 2.52 nm were successfully synthesized by the thermolytical approach assisted by halloysite nanotubes. The tribological properties of MoS2 nanotubes with good dispersion in oil were tested with a four-ball wear tester. The tribological testing results indicated that the average friction coefficient and the average wear scar diameter of the 0.08 wt % MoS2-based oil at 25 °C decreased about 39.2 and 35.0%, respectively, compared to those of the 150 SN base oil, indicating that the as-prepared MoS2 nanotubes as a lubricating additive can enhance the tribological performances. Finally, the lubrication mechanism of MoS2 nanotubes was put forward.
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Affiliation(s)
- Pei-Rong Wu
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zan Liu
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zhi-Lin Cheng
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou 225002, China
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20
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Gao S, Wang B, Liu X, Guo Z, Liu Z, Wang Y. PbTe quantum dots as electron transfer intermediates for the enhanced hydrogen evolution reaction of amorphous MoS x/TiO 2 nanotube arrays. NANOSCALE 2018; 10:10288-10295. [PMID: 29790559 DOI: 10.1039/c8nr02532k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Amorphous molybdenum sulfides (a-MoSx) have been demonstrated as economic and efficient hydrogen evolution catalysts for water splitting. Further improvements of their hydrogen evolution reaction (HER) activities could be achieved by coupling them with appropriate electron transfer intermediates via interfacial engineering. In this study, a novel ternary composite electrode comprising PbTe quantum dots (QDs), a-MoSx and TiO2 nanotube arrays (TNAs) was successfully fabricated by a facile combination of successive ionic layer adsorption and reaction (SILAR) and electrodeposition routes. Investigation of the microstructures and electrocatalytic properties of the a-MoSx/PbTe QD/TNA hybrid material show that PbTe QDs can work as electron temporary storage and electron transfer intermediates between the electrocatalyst a-MoSx and electrode-based material TiO2 that significantly lower the impedance of electrode process, enhance the energy band bending at the interface between the electrolyte and electrode surface, and increase the electrochemically active surface area. The electron interphase crossing from a-MoSx to electrolyte and electron transport inside the electrode are greatly strengthened. The ternary PbTe@MoSx/TNA electrode demonstrates lowered onset potential and Tafel slope and superior electrocatalytic activity and cyclic stability towards HER.
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Affiliation(s)
- Shiyuan Gao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China.
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21
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Li Z, Suslick KS. Ultrasonic Preparation of Porous Silica-Dye Microspheres: Sensors for Quantification of Urinary Trimethylamine N-Oxide. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15820-15828. [PMID: 29694015 DOI: 10.1021/acsami.8b00995] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Trimethylamine N-oxide (TMAO), the N-oxide metabolite of trimethylamine (TMA), is a key index in the determination of a wide variety of human cardiac or kidney diseases. A colorimetric sensor array comprising ultrasonically prepared silica-dye microspheres was developed for rapid, portable, and sensitive detection of urinary TMAO. To prepare the sensor array, 13 different organically modified silica (ormosil)-dye composites were synthesized from the hydrolysis/pyrolysis of ultrasonically sprayed organosiloxane precursors under optimized reaction conditions; the resulting products are uniformly sized nanoporous microspheres that are effective colorimetric sensors for various volatile analytes. The effective quantification of aqueous TMAO (which is not volatile) was based on sensing the volatile TMA produced from a simple catalytic reduction of TMAO in situ. RGB color-change patterns from digital images of the sensor array permit precise discrimination among a wide range of TMAO concentrations (10-750 μM) in simulated urine samples; both hierarchical cluster analysis and principal component analysis achieve >99% accuracy in data classification. The calculated limit of detection of urinary TMAO is ∼4 μM, which is substantially below the median level of healthy subjects (∼380 μM). The array of sensors could be simplified to only a couple of strongly responsive elements for the ease of field use, and the process could be developed as a point-of-care tool in combination with digital imaging for the early diagnosis of cardiovascular or kidney diseases from the measurement of fasting urinary level of TMAO.
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Affiliation(s)
- Zheng Li
- Department of Chemistry , University of Illinois at Urbana-Champaign , 600 S. Mathews Avenue , Urbana , Illinois 61801 , United States
| | - Kenneth S Suslick
- Department of Chemistry , University of Illinois at Urbana-Champaign , 600 S. Mathews Avenue , Urbana , Illinois 61801 , United States
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22
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Hu C, Zhang L, Zhao ZJ, Li A, Chang X, Gong J. Synergism of Geometric Construction and Electronic Regulation: 3D Se-(NiCo)S x /(OH) x Nanosheets for Highly Efficient Overall Water Splitting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705538. [PMID: 29363189 DOI: 10.1002/adma.201705538] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 12/17/2017] [Indexed: 05/05/2023]
Abstract
The exploration of highly efficient electrocatalysts for both oxygen and hydrogen generation via water splitting is receiving considerable attention in recent decades. Up till now, Pt-based catalysts still exhibit the best hydrogen evolution reaction (HER) performance and Ir/Ru-based oxides are identified as the benchmark for oxygen evolution reaction (OER). However, the high cost and rarity of these materials extremely hinder their large-scale applications. This paper describes the construction of the ultrathin defect-enriched 3D Se-(NiCo)Sx /(OH)x nanosheets for overall water splitting through a facile Se-induced hydrothermal treatment. Via Se-induced fabrication, highly efficient Se-(NiCo)Sx /(OH)x nanosheets are successfully fabricated through morphology optimization, defect engineering, and electronic structure tailoring. The as-prepared hybrids exhibit relatively low overpotentials of 155 and 103 mV at the current density of 10 mA cm-2 for OER and HER, respectively. Moreover, an overall water-splitting device delivers a current density of 10 mA cm-2 for ≈66 h without obvious degradation.
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Affiliation(s)
- Congling Hu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Lei Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Zhi-Jian Zhao
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Ang Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Xiaoxia Chang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Jinlong Gong
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
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23
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Tang C, Zhong L, Zhang B, Wang HF, Zhang Q. 3D Mesoporous van der Waals Heterostructures for Trifunctional Energy Electrocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1705110. [PMID: 29226394 DOI: 10.1002/adma.201705110] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/05/2017] [Indexed: 06/07/2023]
Abstract
The emergence of van der Waals (vdW) heterostructures of 2D materials has opened new avenues for fundamental scientific research and technological applications. However, the current concepts and strategies of material engineering lack feasibilities to comprehensively regulate the as-obtained extrinsic physicochemical characters together with intrinsic properties and activities for optimal performances. A 3D mesoporous vdW heterostructure of graphene and nitrogen-doped MoS2 via a two-step sequential chemical vapor deposition method is constructed. Such strategy is demonstrated to offer an all-round engineering of 2D materials including the morphology, edge, defect, interface, and electronic structure, thereby leading to robustly modified properties and greatly enhanced electrochemical activities. The hydrogen evolution is substantially accelerated on MoS2 , while the oxygen reduction and evolution are significantly improved on graphene. This work provides a powerful overall engineering strategy of 2D materials for electrocatalysis, which is also enlightening for other nanomaterials and energy-related applications.
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Affiliation(s)
- Cheng Tang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Ling Zhong
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Bingsen Zhang
- Shenyang National Laboratory for Material Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China
| | - Hao-Fan Wang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Qiang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
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24
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Sun Y, Lin H, Wang C, Wu Q, Wang X, Yang M. Morphology-controlled synthesis of TiO2/MoS2 nanocomposites with enhanced visible-light photocatalytic activity. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00491e] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hollow and yolk–shell heterostructures of TiO2/MoS2 nanocomposites are synthesized via a polymer assisted targeted-etching method and show high photocatalytic activity under sunlight.
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Affiliation(s)
- Yuanqing Sun
- Institute of New Energy Technology
- Ningbo Institute of Industrial Technology
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Huihui Lin
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Chuanxi Wang
- Institute of New Energy Technology
- Ningbo Institute of Industrial Technology
- Chinese Academy of Sciences
- Ningbo
- P. R. China
| | - Qian Wu
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Xiaojie Wang
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Minghui Yang
- Institute of New Energy Technology
- Ningbo Institute of Industrial Technology
- Chinese Academy of Sciences
- Ningbo
- P. R. China
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