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Irusta Y, Morón-Navarrete G, González C. Adsorption and dissociation of hydrogen molecules over S-vacancies in a Nb-doped MoS 2monolayer. NANOTECHNOLOGY 2024; 35:355703. [PMID: 38806004 DOI: 10.1088/1361-6528/ad50dd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/28/2024] [Indexed: 05/30/2024]
Abstract
Motivated by the recent interest in the hydrogen energy, we have carried out a complete study of the catalytic activity of a defective molybdenum disulfide monolayer (MoS2) by means of density functional theory (DFT) calculations. The MoS2monolayer is characterized by a nonreactive basal plane. In principle, its catalytic activity is concentrated at the edges, but an alternative way to increase such activity is obtained by creating active sites where the molecules can dissociate. These defects can be easily produced experimentally by different techniques. In our study, we have performed an atomic, energetic and electronic analysis of a hydrogen molecule adsorbed on a MoS2monolayer. In a first step, we have found that the H2molecule remains physisorbed over both doped-free and Nb-doped MoS2monolayers, showing that the Nb atom does not increase the poor reactivity of the clean MoS2layer. Interestingly, our energetic results suggest that the vacancies will prefer to be formed close to the Nb atoms in the doped monolayer, but the small energy difference would allow the formation in non-doped like sites. Theoretically, we found out the conditions for the molecular dissociation on a S vacancy. In both cases, with and without Nb, the molecule should rotate from the original perpendicular position to an almost parallel orientation jumping an energetic barrier. After that, the atoms are separated binding to the Mo atoms around the missing S atom. Ourab initiomolecular dynamics simulations show that for low pressure conditions (using one single molecule in the system) the H2prefers to desorb from the vacancy, while for larger pressures (when additional H2molecules are added to the system) the molecule is finally dissociated on the vacancy. Our long simulations confirm the great stability of the structure with the two H atoms binding to the Mo atoms close to the vacancy. Finally, the inclusion of a third (or a fourth) H atom in the vacancy leads to the formation and desorption of a H2molecule, leaving one (or two) atoms in the vacancy.
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Affiliation(s)
- Yako Irusta
- Departamento de Física de Materiales, Universidad Complutense de Madrid, E-28040 Madrid, Spain
- Instituto de Magnetismo Aplicado, UCM-ADIF, E-28230 Las Rozas de Madrid, Spain
| | | | - César González
- Departamento de Física de Materiales, Universidad Complutense de Madrid, E-28040 Madrid, Spain
- Instituto de Magnetismo Aplicado, UCM-ADIF, E-28230 Las Rozas de Madrid, Spain
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2
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Ren Z, Li Y, Ren Q, Zhang X, Fan X, Liu X, Fan J, Shen S, Tang Z, Xue Y. Unveiling the Role of Sulfur Vacancies in Enhanced Photocatalytic Activity of Hybrids Photocatalysts. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1009. [PMID: 38921884 PMCID: PMC11207092 DOI: 10.3390/nano14121009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/26/2024] [Accepted: 05/30/2024] [Indexed: 06/27/2024]
Abstract
Photocatalysis represents a sustainable strategy for addressing energy shortages and global warming. The main challenges in the photocatalytic process include limited light absorption, rapid recombination of photo-induced carriers, and poor surface catalytic activity for reactant molecules. Defect engineering in photocatalysts has been proven to be an efficient approach for improving solar-to-chemical energy conversion. Sulfur vacancies can adjust the electron structure, act as electron reservoirs, and provide abundant adsorption and activate sites, leading to enhanced photocatalytic activity. In this work, we aim to elucidate the role of sulfur vacancies in photocatalytic reactions and provide valuable insights for engineering high-efficiency photocatalysts with abundant sulfur vacancies in the future. First, we delve into the fundamental understanding of photocatalysis. Subsequently, various strategies for fabricating sulfur vacancies in photocatalysts are summarized, along with the corresponding characterization techniques. More importantly, the enhanced photocatalytic mechanism, focusing on three key factors, including electron structure, charge transfer, and the surface catalytic reaction, is discussed in detail. Finally, the future opportunities and challenges in sulfur vacancy engineering for photocatalysis are identified.
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Affiliation(s)
- Zhenxing Ren
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; (Z.R.)
| | - Yang Li
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; (Z.R.)
| | - Qiuyu Ren
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China; (Z.R.)
| | - Xiaojie Zhang
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian 223003, China
| | - Xiaofan Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Xinjuan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Shuling Shen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Zhihong Tang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
| | - Yuhua Xue
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China (J.F.)
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3
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An Y, Cao W, Ouyang M, Chen S, Wang G, Chen X. Substantial impact of surface charges on electrochemical reaction kinetics on S vacancies of MoS2 using grand-canonical iteration method. J Chem Phys 2023; 159:144702. [PMID: 37811830 DOI: 10.1063/5.0153358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023] Open
Abstract
The surface charges of catalysts have intricate influences on the thermodynamics and kinetics of electrochemical reactions. Herein, we develop a grand-canonical iteration method based on density functional theory calculations to explore the effect of surface charges on reaction kinetics beyond the traditional Butler-Volmer picture. Using the hydrogen evolution reaction on S vacancies of MoS2 as an example, we show how to track the change of surface charge in a reaction and to analyze its influence on the kinetics. Protons adsorb on S vacancies in a tough and charge-insensitive water splitting manner, which explains the observed large Tafel slope. Grand-canonical calculations report an unanticipated surface charge-induced change of the desorption pathway from the Heyrovsky route to a Volmer-Tafel route. During an electrochemical reaction, a net electron inflow into the catalyst may bring two effects, i.e., stabilization of the canonical energy and destabilization of the charge-dependent grand-canonical part. On the contrary, a net outflow of electrons from the catalyst can reverse the two effects. This surface charge effect has substantial impacts on the overpotential and the Tafel slope. We suggest that the surface charge effect is universal for all electrochemical reactions and significant for those involving interfacial proton transfers.
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Affiliation(s)
- Yi An
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China
| | - Wei Cao
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China
| | - Min Ouyang
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China
| | - Shiqi Chen
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China
| | - Guangjin Wang
- School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Xiaobo Chen
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong 510632, China
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4
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Zhao Y, Zheng X, Gao P, Li H. Recent advances in defect-engineered molybdenum sulfides for catalytic applications. MATERIALS HORIZONS 2023; 10:3948-3999. [PMID: 37466487 DOI: 10.1039/d3mh00462g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Electrochemical energy conversion and storage driven by renewable energy sources is drawing ever-increasing interest owing to the needs of sustainable development. Progress in the related electrochemical reactions relies on highly active and cost-effective catalysts to accelerate the sluggish kinetics. A substantial number of catalysts have been exploited recently, thanks to the advances in materials science and engineering. In particular, molybdenum sulfide (MoSx) furnishes a classic platform for studying catalytic mechanisms, improving catalytic performance and developing novel catalytic reactions. Herein, the recent theoretical and experimental progress of defective MoSx for catalytic applications is reviewed. This article begins with a brief description of the structure and basic catalytic applications of MoS2. The employment of defective two-dimensional and non-two-dimensional MoSx catalysts in the hydrogen evolution reaction (HER) is then reviewed, with a focus on the combination of theoretical and experimental tools for the rational design of defects and understanding of the reaction mechanisms. Afterward, the applications of defective MoSx as catalysts for the N2 reduction reaction, the CO2 reduction reaction, metal-sulfur batteries, metal-oxygen/air batteries, and the industrial hydrodesulfurization reaction are discussed, with a special emphasis on the synergy of multiple defects in achieving performance breakthroughs. Finally, the perspectives on the challenges and opportunities of defective MoSx for catalysis are presented.
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Affiliation(s)
- Yunxing Zhao
- School of Materials, Sun Yat-sen University, Guangzhou 510275, China.
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore.
| | - Xiaolin Zheng
- Department of Mechanical Engineering, Stanford University, California 94305, USA.
| | - Pingqi Gao
- School of Materials, Sun Yat-sen University, Guangzhou 510275, China.
| | - Hong Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore.
- CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, 637553, Singapore
- Centre for Micro-/Nano-electronics (NOVITAS), School of Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore
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5
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Mohamed MS, Gondal MA, Hassan M, Almessiere MA, Tahir AA, Roy A. Effective Hydrogen Production from Alkaline and Natural Seawater using WO 3-x@CdS 1-x Nanocomposite-Based Electrocatalysts. ACS OMEGA 2023; 8:33332-33341. [PMID: 37744852 PMCID: PMC10515405 DOI: 10.1021/acsomega.3c02516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/25/2023] [Indexed: 09/26/2023]
Abstract
Offshore hydrogen production through water electrolysis presents significant technical and economic challenges. Achieving an efficient hydrogen evolution reaction (HER) in alkaline and natural seawater environments remains daunting due to the sluggish kinetics of water dissociation. To address this issue, we synthesized electrocatalytic WO3-x@CdS1-x nanocomposites (WCSNCs) using ultrasonic-assisted laser irradiation. The synthesized WCSNCs with varying CdS contents were thoroughly characterized to investigate their structural, morphological, and electrochemical properties. Among the samples tested, the WCSNCs with 20 wt % CdS1-x in WO3-x (Wx@Sx-20%) exhibited superior electrocatalytic performance for hydrogen evolution in a 1 M KOH solution. Specifically, the Wx@Sx-20% catalyst demonstrated an overpotential of 0.191 V at a current density of -10 mA/cm2 and a Tafel slope of 61.9 mV/dec. The Wx@Sx-20% catalysts demonstrated outstanding stability and durability, maintaining their performance after 24 h and up to 1000 CV cycles. Notably, when subjected to natural seawater electrolysis, the Wx@Sx-20% catalysts outperformed in terms of electrocatalytic HER activity and stability. The remarkable performance enhancement of the prepared electrocatalyst can be attributed to the combined effect of sulfur vacancies in CdS1-x and oxygen vacancies in WO3-x. These vacancies promote the electrochemically active surface area, enhance the rate of charge separation and transfer, increase the number of electrocatalytic active sites, and accelerate the HER process in alkaline and natural seawater environments.
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Affiliation(s)
- Mohamed
Jaffer Sadiq Mohamed
- Laser
Research Group, Department of Physics & Interdisciplinary Research
Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia
| | - Mohammed Ashraf Gondal
- Laser
Research Group, Department of Physics & Interdisciplinary Research
Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia
- K.
A. CARE Energy Research and Innovation Center, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Muhammad Hassan
- Laser
Research Group, Department of Physics & Interdisciplinary Research
Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia
| | - Munirah Abdullah Almessiere
- Department
of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
- Department
of Physics, College of Science, Imam Abdulrahman
Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Asif Ali Tahir
- Solar
Energy Research Group, Environment and Sustainability Institute, Faculty
of Environment, Science and Economy, University
of Exeter, Penryn Campus, Cornwall TR10 9FE, U.K.
| | - Anurag Roy
- Solar
Energy Research Group, Environment and Sustainability Institute, Faculty
of Environment, Science and Economy, University
of Exeter, Penryn Campus, Cornwall TR10 9FE, U.K.
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6
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Jiménez-Arévalo N, Al Shuhaib JH, Pacheco RB, Marchiani D, Saad Abdelnabi MM, Frisenda R, Sbroscia M, Betti MG, Mariani C, Manzanares-Negro Y, Navarro CG, Martínez-Galera AJ, Ares JR, Ferrer IJ, Leardini F. MoS 2 Photoelectrodes for Hydrogen Production: Tuning the S-Vacancy Content in Highly Homogeneous Ultrathin Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2023; 15:33514-33524. [PMID: 37406352 PMCID: PMC10865293 DOI: 10.1021/acsami.3c02192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 06/14/2023] [Indexed: 07/07/2023]
Abstract
Tuning the electrocatalytic properties of MoS2 layers can be achieved through different paths, such as reducing their thickness, creating edges in the MoS2 flakes, and introducing S-vacancies. We combine these three approaches by growing MoS2 electrodes by using a special salt-assisted chemical vapor deposition (CVD) method. This procedure allows the growth of ultrathin MoS2 nanocrystals (1-3 layers thick and a few nanometers wide), as evidenced by atomic force microscopy and scanning tunneling microscopy. This morphology of the MoS2 layers at the nanoscale induces some specific features in the Raman and photoluminescence spectra compared to exfoliated or microcrystalline MoS2 layers. Moreover, the S-vacancy content in the layers can be tuned during CVD growth by using Ar/H2 mixtures as a carrier gas. Detailed optical microtransmittance and microreflectance spectroscopies, micro-Raman, and X-ray photoelectron spectroscopy measurements with sub-millimeter spatial resolution show that the obtained samples present an excellent homogeneity over areas in the cm2 range. The electrochemical and photoelectrochemical properties of these MoS2 layers were investigated using electrodes with relatively large areas (0.8 cm2). The prepared MoS2 cathodes show outstanding Faradaic efficiencies as well as long-term stability in acidic solutions. In addition, we demonstrate that there is an optimal number of S-vacancies to improve the electrochemical and photoelectrochemical performances of MoS2.
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Affiliation(s)
- Nuria Jiménez-Arévalo
- Departamento
de Física de Materiales, Universidad
Autónoma de Madrid, 28049, Madrid, Spain
| | - Jinan H. Al Shuhaib
- Departamento
de Física de Materiales, Universidad
Autónoma de Madrid, 28049, Madrid, Spain
| | | | - Dario Marchiani
- Dipartimento
di Física, Sapienza Università
di Roma, 00185 Roma, Italy
| | - Mahmoud M. Saad Abdelnabi
- Dipartimento
di Física, Sapienza Università
di Roma, 00185 Roma, Italy
- Physics
Department, Faculty of Science, Ain Shams
University, 11566 Cairo, Egypt
| | - Riccardo Frisenda
- Dipartimento
di Física, Sapienza Università
di Roma, 00185 Roma, Italy
| | - Marco Sbroscia
- Dipartimento
di Física, Sapienza Università
di Roma, 00185 Roma, Italy
| | | | - Carlo Mariani
- Dipartimento
di Física, Sapienza Università
di Roma, 00185 Roma, Italy
| | - Yolanda Manzanares-Negro
- Departamento
de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Cristina Gómez Navarro
- Departamento
de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto
Nicolás Cabrera, Universidad Autónoma
de Madrid, 28049 Madrid, Spain
| | - Antonio J. Martínez-Galera
- Departamento
de Física de Materiales, Universidad
Autónoma de Madrid, 28049, Madrid, Spain
- Instituto
Nicolás Cabrera, Universidad Autónoma
de Madrid, 28049 Madrid, Spain
| | - José Ramón Ares
- Departamento
de Física de Materiales, Universidad
Autónoma de Madrid, 28049, Madrid, Spain
| | - Isabel J. Ferrer
- Departamento
de Física de Materiales, Universidad
Autónoma de Madrid, 28049, Madrid, Spain
- Instituto
Nicolás Cabrera, Universidad Autónoma
de Madrid, 28049 Madrid, Spain
| | - Fabrice Leardini
- Departamento
de Física de Materiales, Universidad
Autónoma de Madrid, 28049, Madrid, Spain
- Instituto
Nicolás Cabrera, Universidad Autónoma
de Madrid, 28049 Madrid, Spain
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7
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Wang T, Chang P, Sun Z, Wang X, Tao J, Guan L. Interface prompted highly efficient hydrogen evolution of MoS 2/CoS 2 heterostructures in a wide pH range. Phys Chem Chem Phys 2023; 25:13966-13977. [PMID: 37191141 DOI: 10.1039/d3cp01011b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Interfacial electronic characteristics are crucial for the hydrogen evolution reaction (HER), especially in nanoscale heterogeneous catalysts. In this work, we found that the synergistic activation of CoS2 and MoS2 (2H-MoS2 and 1T-MoS2) greatly enhances the HER activity in a wide pH range compared to those of each component. The Gibbs free energies for hydrogen adsorption at interfacial Co sites are as low as -0.08 (-0.25) eV and -0.20 (0.01) eV for 2H-MoS2/CoS2 and 1T-MoS2/CoS2 heterostructures in acidic (alkaline) media, respectively, which are even superior to that of Pt(111) (-0.09 eV). Moreover, the theoretical exchange current density of MoS2/CoS2 can reach ∼1.98 × 10-18 A site-1 (∼8.43 A mg-1). Experimentally, MoS2/CoS2 exhibits a greatly reduced overpotential of 54 (46) mV and a Tafel slope of 42 (50) mV dec-1 under acidic (alkaline) conditions. The improved performance mainly originates from the synergistically activated interfacial Co atoms with better electron localization and local bonding. The interfacial effect enhances the electron conductivity and improves the H adsorption characteristics, making MoS2/CoS2 highly valuable as efficient HER electrocatalysts.
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Affiliation(s)
- Tian Wang
- School of Science, Hebei University of Technology, Tianjin 300401, China.
| | - Pu Chang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China.
| | - Zhipeng Sun
- School of Science, Hebei University of Technology, Tianjin 300401, China.
| | - Xiaohu Wang
- Ulanqab Key Laboratory of graphite (graphene) new materials, Rising Graphite Applied Technology Research Institute, Ulanqab, Inner Mongolia, 013650, China
| | - Junguang Tao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, China.
| | - Lixiu Guan
- School of Science, Hebei University of Technology, Tianjin 300401, China.
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8
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Gautam A, Sk S, Pal U. Recent advances in solution assisted synthesis of transition metal chalcogenides for photo-electrocatalytic hydrogen evolution. Phys Chem Chem Phys 2022; 24:20638-20673. [PMID: 36047908 DOI: 10.1039/d2cp02089k] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen evolution from water splitting is considered to be an important renewable clean energy source and alternative to fossil fuels for future energy sustainability. Photocatalytic and electrocatalytic water splitting is considered to be an effective method for the sustainable production of clean energy, H2. This perspective especially emphasizes research advances in the solution-assisted synthesis of transition metal chalcogenides for both photo and electrocatalytic hydrogen evolution applications. Transition metal chalcogenides (CdS, MoS2, WS2, TiS2, TaS2, ReS2, MoSe2, and WSe2) have received intensified research interest over the past two decades on account of their unique properties and great potential across a wide range of applications. The photocatalytic activity of transition metal chalcogenides can further be improved by elemental doping, heterojunction formation with noble metals (Au, Pt, etc.), non-chalcogenides (MoS2, In2S3, NiS1-X), morphological tuning, through various solution-assisted synthesis processes, including liquid-phase exfoliation, heat-up, hot-injection methods, hydrothermal/solvothermal routes and template-mediated synthesis processes. In this review we will discuss recent developments in transition metal chalcogenides (TMCs), the role of TMCs for hydrogen production and various strategies for surface functionalization to increase their activity, different synthesis methods, and prospects of TMCs for hydrogen evolution. We have included a brief discussion on the effect of surface hydrogen binding energy and Gibbs free energy change for HER in electrocatalytic hydrogen evolution.
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Affiliation(s)
- Amit Gautam
- Department of Energy & Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Saddam Sk
- Department of Energy & Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Ujjwal Pal
- Department of Energy & Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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9
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Cui M, Yan Z, Zhang M, Jia S, Zhang Y. Ultrasound-assisted Synthesis of nickel/nickel Phosphide on Carbon Nanotubes as Highly Effective Electrocatalysts for Hydrogen Evolution Reaction in Alkaline Solution. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Kirubasankar B, Won YS, Adofo LA, Choi SH, Kim SM, Kim KK. Atomic and structural modifications of two-dimensional transition metal dichalcogenides for various advanced applications. Chem Sci 2022; 13:7707-7738. [PMID: 35865881 PMCID: PMC9258346 DOI: 10.1039/d2sc01398c] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/18/2022] [Indexed: 12/14/2022] Open
Abstract
Two-dimensional (2D) transition metal dichalcogenides (TMDs) and their heterostructures have attracted significant interest in both academia and industry because of their unusual physical and chemical properties. They offer numerous applications, such as electronic, optoelectronic, and spintronic devices, in addition to energy storage and conversion. Atomic and structural modifications of van der Waals layered materials are required to achieve unique and versatile properties for advanced applications. This review presents a discussion on the atomic-scale and structural modifications of 2D TMDs and their heterostructures via post-treatment. Atomic-scale modifications such as vacancy generation, substitutional doping, functionalization and repair of 2D TMDs and structural modifications including phase transitions and construction of heterostructures are discussed. Such modifications on the physical and chemical properties of 2D TMDs enable the development of various advanced applications including electronic and optoelectronic devices, sensing, catalysis, nanogenerators, and memory and neuromorphic devices. Finally, the challenges and prospects of various post-treatment techniques and related future advanced applications are addressed.
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Affiliation(s)
- Balakrishnan Kirubasankar
- Department of Energy Science, Sungkyunkwan University Suwon 16419 South Korea .,Department of Chemistry, Sookmyung Women's University Seoul 14072 South Korea
| | - Yo Seob Won
- Department of Energy Science, Sungkyunkwan University Suwon 16419 South Korea .,Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University Suwon 16419 South Korea
| | - Laud Anim Adofo
- Department of Energy Science, Sungkyunkwan University Suwon 16419 South Korea .,Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University Suwon 16419 South Korea
| | - Soo Ho Choi
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University Suwon 16419 South Korea
| | - Soo Min Kim
- Department of Chemistry, Sookmyung Women's University Seoul 14072 South Korea
| | - Ki Kang Kim
- Department of Energy Science, Sungkyunkwan University Suwon 16419 South Korea .,Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University Suwon 16419 South Korea
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11
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Cho J, Seok H, Lee I, Lee J, Kim E, Sung D, Baek IK, Lee CH, Kim T. Activation of nitrogen species mixed with Ar and H 2S plasma for directly N-doped TMD films synthesis. Sci Rep 2022; 12:10335. [PMID: 35725747 PMCID: PMC9209500 DOI: 10.1038/s41598-022-14233-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022] Open
Abstract
Among the transition metal dichalcogenides (TMD), tungsten disulfide (WS2) and molybdenum disulfide (MoS2) are promising sulfides for replacing noble metals in the hydrogen evolution reaction (HER) owing to their abundance and good catalytic activity. However, the catalytic activity is derived from the edge sites of WS2 and MoS2, while their basal planes are inert. We propose a novel process for N-doped TMD synthesis for advanced HER using N2 + Ar + H2S plasma. The high ionization energy of Ar gas enabled nitrogen species activation results in efficient N-doping of TMD (named In situ-MoS2 and In situ-WS2). In situ-MoS2 and WS2 were characterized by various techniques (Raman spectroscopy, XPS, HR-TEM, TOF–SIMS, and OES), confirming nanocrystalline and N-doping. The N-doped TMD were used as electrocatalysts for the HER, with overpotentials of 294 mV (In situ-MoS2) and 298 mV (In situ-WS2) at a current density of 10 mA cm−2, which are lower than those of pristine MoS2 and WS2, respectively. Density functional theory (DFT) calculations were conducted for the hydrogen Gibbs energy (∆GH) to investigate the effect of N doping on the HER activity. Mixed gas plasma proposes a facile and novel fabrication process for direct N doping on TMD as a suitable HER electrocatalyst.
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Affiliation(s)
- Jinill Cho
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Hyunho Seok
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 16419, South Korea
| | - Inkoo Lee
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Jaewon Lee
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Eungchul Kim
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Dougyong Sung
- Samsung Electronic Co. Ltd., Mechatronics R&D Center, 1-1 Samsungjeonja-ro, Hwaseong-si, Gyeonggi-do, 18448, South Korea
| | - In-Keun Baek
- Samsung Electronic Co. Ltd., Mechatronics R&D Center, 1-1 Samsungjeonja-ro, Hwaseong-si, Gyeonggi-do, 18448, South Korea
| | - Cheol-Hun Lee
- Samsung Electronic Co. Ltd., Mechatronics R&D Center, 1-1 Samsungjeonja-ro, Hwaseong-si, Gyeonggi-do, 18448, South Korea
| | - Taesung Kim
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea. .,SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 16419, South Korea.
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12
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Chen Q, An X, Wu X, Zhang J, Yao W, Sun C, Wang Q, Kong Q. Mo‐Doped Sulfur‐Vacancy‐Rich V
1.11
S
2
Nanosheets for Efficient Hydrogen Evolution. ChemistrySelect 2022. [DOI: 10.1002/slct.202201266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qiuyue Chen
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
| | - Xuguang An
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
| | - Xiaoqiang Wu
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
| | - Jing Zhang
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
| | - Weitang Yao
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
| | - Chenghua Sun
- Department of Chemistry and Biotechnology and Center for Translational Atomaterials Swinburne University of Technology Hawthorn VIC 3122 Australia
| | - Qingyuan Wang
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
- College of Architecture and Environment Sichuan University Chengdu 610065 Sichuan PR China
| | - Qingquan Kong
- Department of Mechanical Engineering Chengdu University Chengdu 610106 Sichuan PR China
- College of Architecture and Environment Sichuan University Chengdu 610065 Sichuan PR China
- Catastrophic Mechanics and Engineering Disaster Prevention Key Laboratory of Sichuan Province Sichuan University Chengdu 610065 PR China
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13
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Sun J, Maimaiti H, Zhai P, Zhang H, Feng L, Bao J, Zhao X. Preparation of a Coal-Based MoS 2/SiO 2/GO Composite Catalyst and Its Performance in the Photocatalytic Degradation of Wastewater and Hydrogen Production. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3305-3315. [PMID: 35245063 DOI: 10.1021/acs.langmuir.2c00163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photocatalytic degradation of wastewater and the simultaneous production of hydrogen (H2) is a green and efficient method to solve energy and environmental problems. In this paper, coal-based SiO2/GO with a stable structure was prepared by a modified Hummers oxidation method, and then, a lotus-shaped composite photocatalyst, MoS2/SiO2/GO, was prepared by in situ loading of flower cluster MoS2 from sodium molybdate reduction onto SiO2/GO. Its photocatalytic degradation of wastewater and H2 production properties were investigated while characterizing the material structure. The results show that SiO2/GO as a carrier not only ensures adequate dispersion of MoS2 but also enhances the visible-light response of the composite catalyst. In addition, it can also hinder the recombination of photogenerated electrons and holes in MoS2 and act as an electron transport channel in composite catalysts. MoS2/SiO2/GO exhibits much higher photocatalytic degradation of wastewater and H2 production capacity than MoS2: after 180 min of reaction, the CODcr removal of wastewater increased from 45.6% for MoS2 to 84.2% for MoS2/SiO2/GO and the H2 yield reached 233.4 μmol. The goal of degrading wastewater while producing H2 more economically has been tentatively achieved, although not to the extent required for industrialization.
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Affiliation(s)
- Jinyan Sun
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
| | - Halidan Maimaiti
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
| | - Peishuai Zhai
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
| | - Haizheng Zhang
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
| | - Lirong Feng
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
| | - Jianzhao Bao
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
| | - Xuwei Zhao
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China
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14
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A review of defect engineering in two-dimensional materials for electrocatalytic hydrogen evolution reaction. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63945-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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15
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Nanoribbons of 2D materials: A review on emerging trends, recent developments and future perspectives. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214335] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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16
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Tian J, Xing X, Sun Y, Zhang X, Li Z, Yang M, Zhang G. Strongly coupled Fe-doped NiS 2/MoS 2 composite for high-efficiency water splitting. Chem Commun (Camb) 2021; 58:557-560. [PMID: 34908047 DOI: 10.1039/d1cc05312d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We developed a simple method to fabricate a strongly coupled Fe-doped NiS2/MoS2 composite by introducing dual confinement effects during the vapor vulcanization of precursors, which involves the controlled release of metal species and the in situ formation of an N-doped carbon layer. The Fe-doped NiS2/MoS2 composite exhibited a much-enhanced hydrogen/oxygen evolution reaction performance.
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Affiliation(s)
- Jinrui Tian
- Al-ion Battery Research Center, Department of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China. .,School of Chemical Engineering, Northeast Electric Power University, Jilin, Jilin 132012, China.
| | - Xu Xing
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Yanhui Sun
- Al-ion Battery Research Center, Department of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China. .,School of Chemical Engineering, Northeast Electric Power University, Jilin, Jilin 132012, China.
| | - Xu Zhang
- Al-ion Battery Research Center, Department of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
| | - Zongge Li
- Al-ion Battery Research Center, Department of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China. .,State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Miaosen Yang
- School of Chemical Engineering, Northeast Electric Power University, Jilin, Jilin 132012, China.
| | - Guoxin Zhang
- Al-ion Battery Research Center, Department of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
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17
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Banik S, Loeffler TD, Batra R, Singh H, Cherukara MJ, Sankaranarayanan SKRS. Learning with Delayed Rewards-A Case Study on Inverse Defect Design in 2D Materials. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36455-36464. [PMID: 34288661 DOI: 10.1021/acsami.1c07545] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Defect dynamics in materials are of central importance to a broad range of technologies from catalysis to energy storage systems to microelectronics. Material functionality depends strongly on the nature and organization of defects-their arrangements often involve intermediate or transient states that present a high barrier for transformation. The lack of knowledge of these intermediate states and the presence of this energy barrier presents a serious challenge for inverse defect design, especially for gradient-based approaches. Here, we present a reinforcement learning (RL) [Monte Carlo Tree Search (MCTS)] based on delayed rewards that allow for efficient search of the defect configurational space and allows us to identify optimal defect arrangements in low-dimensional materials. Using a representative case of two-dimensional MoS2, we demonstrate that the use of delayed rewards allows us to efficiently sample the defect configurational space and overcome the energy barrier for a wide range of defect concentrations (from 1.5 to 8% S vacancies)-the system evolves from an initial randomly distributed S vacancies to one with extended S line defects consistent with previous experimental studies. Detailed analysis in the feature space allows us to identify the optimal pathways for this defect transformation and arrangement. Comparison with other global optimization schemes like genetic algorithms suggests that the MCTS with delayed rewards takes fewer evaluations and arrives at a better quality of the solution. The implications of the various sampled defect configurations on the 2H to 1T phase transitions in MoS2 are discussed. Overall, we introduce a RL strategy employing delayed rewards that can accelerate the inverse design of defects in materials for achieving targeted functionality.
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Affiliation(s)
- Suvo Banik
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, Illinois 60607, United States
| | - Troy David Loeffler
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, Illinois 60607, United States
| | - Rohit Batra
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Harpal Singh
- Research and Development, Sentient Science Corporation, West Lafayette, Indiana 47906, United States
| | - Mathew J Cherukara
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Subramanian K R S Sankaranarayanan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, Illinois 60607, United States
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18
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Wang P, Dai Y, Wang X, Ren X, Luo C. Boosting Hydrogen Evolution on MoS
2
/CNT Modified by Poly(sodium‐p–styrene sulfonate)
via
Proton Concentration in Acid Solution. ChemElectroChem 2021. [DOI: 10.1002/celc.202100608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pengfei Wang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 PR China
| | - Yuxue Dai
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 PR China
| | - Xueying Wang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 PR China
| | - Xiang Ren
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 PR China
| | - Chuannan Luo
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong School of Chemistry and Chemical Engineering University of Jinan Jinan 250022 PR China
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19
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Ju J, Lu J, Shi X, Zhu H, Liang HP. Fe-Induced electronic optimization of mesoporous Co–Ni oxide nanosheets as an efficient binder-free electrode for the oxygen evolution reaction. NEW J CHEM 2021. [DOI: 10.1039/d1nj00092f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An efficient binder-free OER electrode CoNiFeOx/NF with mesoporous structure was synthesized by a facile strategy of hydrothermal method and post-annealing.
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Affiliation(s)
- Jingjing Ju
- Key laboratory of Biofuels
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Jiajia Lu
- Key laboratory of Biofuels
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Xiaoyue Shi
- Key laboratory of Biofuels
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Hongwei Zhu
- Key laboratory of Biofuels
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Han-Pu Liang
- Key laboratory of Biofuels
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
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20
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Zhan W, Zhu M, Lan J, Yuan H, Wang H, Yang X, Sui G. All-in-One MoS 2 Nanosheets Tailored by Porous Nitrogen-Doped Graphene for Fast and Highly Reversible Sodium Storage. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51488-51498. [PMID: 33147944 DOI: 10.1021/acsami.0c15169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Though being a promising anode material for sodium-ion batteries (SIBs), MoS2 with high theoretical capacity shows poor rate capability and rapid capacity decay, especially involving the conversion of MoS2 to Mo metal and Na2S. Here, we report all-in-one MoS2 nanosheets tailored by porous nitrogen-doped graphene (N-RGO) for the first time to achieve superior structural stability and high cycling reversibility of MoS2 in SIBs. The all-in-one MoS2 nanosheets possess desirable structural characteristics by admirably rolling up all good qualities into one, including vertical alignment, an ultrathin layer, vacancy defects, and expanded layer spacing. Thus, the all-in-one MoS2@N-RGO composite anode exhibits an improvement in the charge transport kinetics and availability of active materials in SIBs, resulting in outstanding cycling and rate performance. More importantly, the restricted growth of all-in-one MoS2 by the porous N-RGO via a strong coupling effect dramatically improves the cycling reversibility of conversion reaction. Consequently, the all-in-one MoS2@N-RGO composite anode demonstrates excellent reversible capacity, outstanding rate capability, and superior cycling stability. This study strongly suggests that the all-in-one MoS2@N-RGO has great potential for practical application in high-performance SIBs.
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Affiliation(s)
- Wenwei Zhan
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ming Zhu
- Shanghai Institute of Space Power-Sources, Shanghai 200245, China
| | - Jinle Lan
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haocheng Yuan
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haijun Wang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Gang Sui
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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