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Aggarwal R, Saini D, Mitra R, Sonkar SK, Sonker AK, Westman G. From Bulk Molybdenum Disulfide (MoS 2) to Suspensions of Exfoliated MoS 2 in an Aqueous Medium and Their Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9855-9872. [PMID: 38687994 DOI: 10.1021/acs.langmuir.3c03116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Two-dimensional (2D) layered materials like graphene, transition-metal dichalcogenides (TMDs), boron nitrides, etc., exhibit unique and fascinating properties, such as high surface-to-volume ratio, inherent mechanical flexibility and robustness, tunable bandgap, and high carrier mobility, which makes them an apt candidate for flexible electronics with low consumption of power. Because of these properties, they are in tremendous demand for advancement in energy, environmental, and biomedical sectors developed through various technologies. The production and scalability of these materials must be sustainable and ecofriendly to utilize these unique properties in the real world. Here, in this current review, we review molybdenum disulfide (MoS2 nanosheets) in detail, focusing on exfoliated MoS2 in water and the applicability of aqueous MoS2 suspensions in various fields. The exfoliation of MoS2 results in the formation of single or few-layered MoS2. Therefore, this Review focuses on the few layers of exfoliated MoS2 that have the additional properties of 2D layered materials and higher excellent compatibility for integration than existing conventional Si tools. Hence, a few layers of exfoliated MoS2 are widely explored in biosensing, gas sensing, catalysis, photodetectors, energy storage devices, a light-emitting diode (LED), adsorption, etc. This review covers the numerous methodologies to exfoliate MoS2, focusing on the various published methodologies to obtain nanosheets of MoS2 from water solutions and their use.
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Affiliation(s)
- Ruchi Aggarwal
- Department of Chemistry, Malaviya National Institute of Technology, Jaipur 302017, India
| | - Deepika Saini
- Department of Chemistry, Malaviya National Institute of Technology, Jaipur 302017, India
| | - Richa Mitra
- Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
- Low Temperature Laboratory, Department of Applied Physics, Aalto University, Espoo 02150, Finland
| | - Sumit Kumar Sonkar
- Department of Chemistry, Malaviya National Institute of Technology, Jaipur 302017, India
| | - Amit Kumar Sonker
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
- Wallenberg Wood Science Centre (WWSC), Chalmers University of Technology, Gothenburg, 41296, Sweden
- BA5409 cellulose films and coatings, VTT Technical Research Center of Finland, Tietotie 4E, Espoo 02150, Finland
| | - Gunnar Westman
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, 41296, Sweden
- Wallenberg Wood Science Centre (WWSC), Chalmers University of Technology, Gothenburg, 41296, Sweden
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2
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Lin YH, Tsai CN, Chen PF, Lin YT, Darvishi S, Girault HH, Lin TY, Liao MY, Lin TE. AI-Assisted Fusion of Scanning Electrochemical Microscopy Images Using Novel Soft Probe. ACS MEASUREMENT SCIENCE AU 2022; 2:576-583. [PMID: 36785775 PMCID: PMC9885998 DOI: 10.1021/acsmeasuresciau.2c00032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 06/18/2023]
Abstract
Scanning electrochemical microscopy (SECM) is one of the scanning probe techniques that has attracted considerable attention because of its ability to interrogate surface morphology or electrochemical reactivity. However, the quality of SECM images generally depends on the sizes of the electrodes and many uncontrollable factors. Furthermore, manipulating fragile glass ultramicroelectrodes and blurred images sometimes frustrate researchers. To overcome the challenges of modern SECM, we developed novel soft gold probes and then established the AI-assisted methodology for image fusion. A novel gold microelectrode probe with high softness was developed to scan fragile samples. The distribution of EGFR (protein biomarker) in oral cancer was investigated. Then, we fused the optical microscopic and SECM images to enhance the image quality using Matlab software. However, thousands of fused images were generated by changing the parameters for image fusion, which is annoying for researchers. Thus, a deep learning model was built to select the best-fused images according to the contrast and clarity of the fused images. Therefore, the quality of the SECM images was improved using a novel soft probe and combining the image fusion technique. In the future, a new scanning probe with AI-assisted fused SECM image processing may be interpreted more preciously and contribute to the early detection of cancers.
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Affiliation(s)
- Yi-Hong Lin
- Institute
of Biomedical Engineering, Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
| | - Chih-Ning Tsai
- Institute
of Biomedical Engineering, Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
| | - Po-Feng Chen
- Institute
of Biomedical Engineering, Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
| | - Yen-Tzu Lin
- Institute
of Biomedical Engineering, Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
| | - Sorour Darvishi
- Department
of Chemistry and Chemical Engineering, École
Polytechnique Fédérale de Lausanne (EPFL), Valais Wallis, CH-1950 Sion, Switzerland
| | - Hubert H. Girault
- Department
of Chemistry and Chemical Engineering, École
Polytechnique Fédérale de Lausanne (EPFL), Valais Wallis, CH-1950 Sion, Switzerland
| | - Tung-Yi Lin
- Institute
of Traditional Medicine, National Yang Ming
Chiao Tung University, Taipei 11221, Taiwan
- Biomedical
Industry Ph.D. Program, National Yang Ming
Chiao Tung University, Taipei 11221, Taiwan
| | - Mei-Yi Liao
- Department
of Applied Chemistry, National Pingtung
University, Pingtung 90003, Taiwan
| | - Tzu-En Lin
- Institute
of Biomedical Engineering, Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, 30010 Hsinchu, Taiwan
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Peera SG, Koutavarapu R, Chao L, Singh L, Murugadoss G, Rajeshkhanna G. 2D MXene Nanomaterials as Electrocatalysts for Hydrogen Evolution Reaction (HER): A Review. MICROMACHINES 2022; 13:mi13091499. [PMID: 36144122 PMCID: PMC9500977 DOI: 10.3390/mi13091499] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 05/27/2023]
Abstract
MXenes, a novel family of 2D transition metal carbide, nitride and carbonitride materials, have been gaining tremendous interest in recent days as potential electrocatalysts for various electrochemical reactions, including hydrogen evolution reaction (HER). MXenes are characterized by their etchable metal layers, excellent structural stability, versatility for heteroatoms doping, excellent electronic conductivity, unique surface functional groups and admirable surface area, suitable for the role of electrocatalyst/support in electrochemical reactions, such as HER. In this review article, we summarized recent developments in MXene-based electrocatalysts synthesis and HER performance in terms of the theoretical and experimental point of view. We systematically evaluated the superiority of the MXene-based catalysts over traditional Pt/C catalysts in terms of HER kinetics, Tafel slope, overpotential and stability, both in acidic and alkaline electrolytic environments. We also pointed out the motives behind the electro catalytic enhancements, the effect of synthesis conditions, heteroatom doping, the effect of surface terminations on the electrocatalytic active sites of various MXenes families. At the end, various possible approaches were recommended for a deeper understanding of the active sites and catalytic improvement of MXenes catalysts for HER.
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Affiliation(s)
- Shaik Gouse Peera
- Department of Environmental Science, Keimyung University, Dalseo-gu, Daegu 42601, Korea
| | - Ravindranadh Koutavarapu
- Department of Robotics Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan 38541, Korea
| | - Liu Chao
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Lakhveer Singh
- Department of Chemistry, Sardar Patel University, Mandi 175001, Himachal Pradesh, India
- Department of Civil Engineering, Center for Research & Development, Chandigarh University, Mohali 140413, Punjab, India
| | - Govindhasamy Murugadoss
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600119, Tamilnadu, India
| | - Gaddam Rajeshkhanna
- Department of Chemistry, National Institute of Technology Warangal, Warangal 506004, Telangana, India
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4
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Patil DR, Sarode KM, Nerkar DM, Patil UD, Bachhav SG, Sonawane US, Paliwal N. Sonocatalytic Degradation of Methylene Blue by MoS2-RGO Nanocomposites. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421120153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Gopi S, Selvamani V, Yun K. MoS 2 Decoration Followed by P Inclusion over Ni-Co Bimetallic Metal-Organic Framework-Derived Heterostructures for Water Splitting. Inorg Chem 2021; 60:10772-10780. [PMID: 34196173 DOI: 10.1021/acs.inorgchem.1c01478] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Demonstrating a highly efficient non-noble bifunctional catalyst for complete water electrolysis remains challenging because of kinetic limitations and crucial importance for future energy harvesting. Herein, a low-cost, integrated composite of a Ni-Co metal-organic framework decorated with thin MoS2 nanosheets was synthesized by a simple hydrothermal method followed by carbonization and phosphorization for electrochemical oxygen and hydrogen evolution reactions. Such a composite heterostructure exhibits outstanding performance in the electrocatalysis process with a lower overpotential of 184 mV for the oxygen evolution reaction (OER) and 84 mV for the hydrogen evolution reaction (HER) in 1.0 M KOH and 0.5 M H2SO4 electrolytes to reach a current density of 10 mA cm-2, with a slight Tafel slope of 63 mV dec-1 for the OER and 96 mV dec-1 for the HER. The obtained results are far better than those of the commercial benchmark catalyst. Furthermore, online gas chromatography quantifies the amount of hydrogen generation in a symmetric cell as equal to 0.002121 moles with an energy efficiency of about 2.237 mg/kWh. Thus, the composite electrode's remarkable performance is further demonstrated as a potentially viable alternative non-noble electrocatalyst for energy conversion reactions.
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Affiliation(s)
- Sivalingam Gopi
- Department of BioNano Technology, Gachon University, GyeongGi -Do 13120, Republic of Korea
| | - Vadivel Selvamani
- Centre of Excellence for Energy Storage Technology (CEST), Vidyasirimedhi Institute of Science and technology, Rayong 21210, Thailand
| | - Kyusik Yun
- Department of BioNano Technology, Gachon University, GyeongGi -Do 13120, Republic of Korea
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6
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2D-Layered Non-Precious Electrocatalysts for Hydrogen Evolution Reaction: Fundamentals to Applications. Catalysts 2021. [DOI: 10.3390/catal11060689] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The production of hydrogen via the water splitting process is one of the most promising technologies for future clean energy requirements, and one of the best related challenges is the choice of the most highly efficient and cost effective electrocatalyst. Conventional electrocatalysts based on precious metals are rare and very-expensive for large-scale production of hydrogen, demanding the exploration for low-cost earth abundant alternatives. In this context, extensive works from both theoretical and experimental investigations have shown that two-dimensional (2D) layered materials have gained considerable attention as highly effective electrocatalytic materials for electrical-driven hydrogen production because of their unique layered structure and exciting electrical properties. This review highlights recent advancements on 2D layered materials, including graphene, transitional metal dichalcogenides (TMDs), layered double hydroxides (LDHs), MXene, and graphitic carbon nitride (g-C3N4) as cost-effective and highly efficient electrocatalysts for hydrogen production. In addition, some fundamental aspects of the hydrogen evolution reaction (HER) process and a wide ranging overview on several strategies to design and synthesize 2D layered material as HER electrocatalysts for commercial applications are introduced. Finally, the conclusion and futuristic prospects and challenges of the advancement of 2D layered materials as non-precious HER electrocatalysts are briefly discussed.
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7
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A Review: Scanning Electrochemical Microscopy (SECM) for Visualizing the Real-Time Local Catalytic Activity. Catalysts 2021. [DOI: 10.3390/catal11050594] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Scanning electrochemical microscopy (SECM) is a powerful scanning probe technique for measuring the in situ electrochemical reactions occurring at various sample interfaces, such as the liquid-liquid, solid-liquid, and liquid-gas. The tip/probe of SECM is usually an ultramicroelectrode (UME) or a nanoelectrode that can move towards or over the sample of interest controlled by a precise motor positioning system. Remarkably, electrocatalysts play a crucial role in addressing the surge in global energy consumption by providing sustainable alternative energy sources. Therefore, the precise measurement of catalytic reactions offers profound insights for designing novel catalysts as well as for enhancing their performance. SECM proves to be an excellent tool for characterization and screening catalysts as the probe can rapidly scan along one direction over the sample array containing a large number of different compositions. These features make SECM more appealing than other conventional methodologies for assessing bulk solutions. SECM can be employed for investigating numerous catalytic reactions including the oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction (HER), water oxidation, glucose oxidation reaction (GOR), and CO2 reduction reaction (CO2RR) with high spatial resolution. Moreover, for improving the catalyst design, several SECM modes can be applied based on the catalytic reactions under evaluation. This review aims to present a brief overview of the recent applications of electrocatalysts and their kinetics as well as catalytic sites in electrochemical reactions, such as oxygen reduction, water oxidation, and methanol oxidation.
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Li J, Zheng H, Xu C, Su Z, Li X, Sun J. Bimetallic Phosphides as High-Efficient Electrocatalysts for Hydrogen Generation. Inorg Chem 2021; 60:1624-1630. [PMID: 33443997 DOI: 10.1021/acs.inorgchem.0c03110] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bimetallic transition-metal phosphides are gradually evolving as efficient hydrogen evolution catalysts. In this study, graphene-coated MoP and bimetallic phosphide (MoNiP) nanoparticles (MoP/MoNiP@C) were synthesized via one-step straightforward high-temperature calcination and phosphating process. The precursor was obtained from polyaniline, Ni2+ ions, and phosphomolybdic acid hydrate (PMo12) by solvent evaporation. As expected, MoP/MoNiP@C manifests excellent hydrogen evolution activity with a low overpotential of 134 mV at 10 mA cm-2 and a small Tafel slope of 66 mV dec-1. Furthermore, MoP/MoNiP@C exhibits satisfactory stability for 24 h in the acid electrolyte. The outstanding catalytic performance can be attributed to the synergistic effect of MoP and MoNiP nanoparticles, the graphene coating protecting MoP and MoNiP from corrosion, as well as an increase in the number of active sites because of porous structures. This work can provide the experimental foundation for the simple synthesis of bimetallic phosphates with remarkable hydrogen evolution performance.
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Affiliation(s)
- Jiao Li
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Haiyan Zheng
- Northeast Normal University, Changchun, Jilin 130024, China
| | - Chunyan Xu
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Zhongmin Su
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.,Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Xiao Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.,Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
| | - Jing Sun
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.,Jilin Provincial Science and Technology Innovation Centre of Optical Materials and Chemistry, Changchun University of Science and Technology, Changchun 130022, People's Republic of China
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9
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Kumar S, Satpati AK. Investigation of interfacial charge transfer kinetics of photocharged Co-Bi modified BiVO4 using scanning electrochemical microscopy (SECM). Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137565] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Zhang Z, Meng Y, Su H, Dong G, Zhao B, Zhang W, Yin G, Liu Y. Controllable design of 3D hierarchical Co/Ni-POM nanoflower compounds supported on Ni foam for the hydrogen evolution reaction. NEW J CHEM 2021. [DOI: 10.1039/d1nj01910d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The outstanding HER activity of Co/Ni-POM/NF stems from the synergistic effect between the metallic elements of the Co/Ni-POM and its large specific surface area.
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Affiliation(s)
- Zhuanfang Zhang
- Center of Teaching Experiment Management Equipment
- Qiqihar University
- Qiqihar 161006
- China
| | - Yuanyuan Meng
- College of Chemistry and Chemical Engineering
- Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Haolun Su
- College of Chemistry and Chemical Engineering
- Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - GuoHua Dong
- College of Chemistry and Chemical Engineering
- Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Bing Zhao
- College of Chemistry and Chemical Engineering
- Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Wenzhi Zhang
- College of Chemistry and Chemical Engineering
- Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary
- Qiqihar University
- Qiqihar 161006
- P. R. China
| | - Guangming Yin
- Center of Teaching Experiment Management Equipment
- Qiqihar University
- Qiqihar 161006
- China
| | - Yongzhi Liu
- Center of Teaching Experiment Management Equipment
- Qiqihar University
- Qiqihar 161006
- China
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11
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Limani N, Boudet A, Blanchard N, Jousselme B, Cornut R. Local probe investigation of electrocatalytic activity. Chem Sci 2020; 12:71-98. [PMID: 34163583 PMCID: PMC8178752 DOI: 10.1039/d0sc04319b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/04/2020] [Indexed: 11/21/2022] Open
Abstract
As the world energy crisis remains a long-term challenge, development and access to renewable energy sources are crucial for a sustainable modern society. Electrochemical energy conversion devices are a promising option for green energy supply, although the challenge associated with electrocatalysis have caused increasing complexity in the materials and systems, demanding further research and insights. In this field, scanning probe microscopy (SPM) represents a specific source of knowledge and understanding. Thus, our aim is to present recent findings on electrocatalysts for electrolysers and fuel cells, acquired mainly through scanning electrochemical microscopy (SECM) and other related scanning probe techniques. This review begins with an introduction to the principles of several SPM techniques and then proceeds to the research done on various energy-related reactions, by emphasizing the progress on non-noble electrocatalytic materials.
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Affiliation(s)
- N Limani
- Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN Gif-sur-Yvette 91191 France
| | - A Boudet
- Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN Gif-sur-Yvette 91191 France
| | - N Blanchard
- Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN Gif-sur-Yvette 91191 France
| | - B Jousselme
- Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN Gif-sur-Yvette 91191 France
| | - R Cornut
- Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN Gif-sur-Yvette 91191 France
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12
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Henrotte O, Boudet A, Limani N, Bergonzo P, Zribi B, Scorsone E, Jousselme B, Cornut R. Steady‐State Electrocatalytic Activity Evaluation with the Redox Competition Mode of Scanning Electrochemical Microscopy: A Gold Probe and a Boron‐Doped Diamond Substrate. ChemElectroChem 2020. [DOI: 10.1002/celc.202001088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Olivier Henrotte
- Université Paris-Saclay CEA CNRS NIMBE LICSEN CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Alice Boudet
- Université Paris-Saclay CEA CNRS NIMBE LICSEN CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Ndrina Limani
- Université Paris-Saclay CEA CNRS NIMBE LICSEN CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Philippe Bergonzo
- Diamond Sensors Laboratory LIST CEA CEA Saclay 91191 Gif-sur-Yvette Cedex France
- Current address: Department of Electronic and Electrical Engineering University College London 17-19 Gordon Street London WC1H 0AH United Kingdom
| | - Bacem Zribi
- Diamond Sensors Laboratory LIST CEA CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Emmanuel Scorsone
- Diamond Sensors Laboratory LIST CEA CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Bruno Jousselme
- Université Paris-Saclay CEA CNRS NIMBE LICSEN CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Renaud Cornut
- Université Paris-Saclay CEA CNRS NIMBE LICSEN CEA Saclay 91191 Gif-sur-Yvette Cedex France
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Mishra S, Mishra AK. Hydrothermally Synthesized MoS
2
Nanoclusters for Hydrogen Evolution Reaction. ELECTROANAL 2020. [DOI: 10.1002/elan.202060065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shanu Mishra
- School of Materials Science and Technology Indian Institute of Technology (BHU) Varanasi 221005 INDIA
| | - Ashish Kumar Mishra
- School of Materials Science and Technology Indian Institute of Technology (BHU) Varanasi 221005 INDIA
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14
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Sera Y, Seto S, Isobe K, Hashimoto H. Development of highly active hydrogen evolution reaction (HER) catalysts composed of reduced graphene oxide and amorphous molybdenum sulfides derived from (NH4)2MoOmS4-m (m = 0, 1, and 2). J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Production and Properties of Molybdenum Disulfide/Graphene Oxide Hybrid Nanostructures for Catalytic Applications. NANOMATERIALS 2020; 10:nano10091865. [PMID: 32957616 PMCID: PMC7558719 DOI: 10.3390/nano10091865] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 09/09/2020] [Accepted: 09/14/2020] [Indexed: 11/24/2022]
Abstract
Molybdenum disulfide (MoS2) can be an excellent candidate for being combined with carbon nanomaterials to obtain new hybrid nanostructures with outstanding properties, including higher catalytic activity. The aim of the conducted research was to develop the novel production method of hybrid nanostructures formed from MoS2 and graphene oxide (GO). The nanostructures were synthesized in different weight ratios and in two types of reactors (i.e., impinging jet and semi-batch reactors). Physicochemical analysis of the obtained materials was carried out, using various analytical techniques: particle size distribution (PSD), thermogravimetric analysis (TGA), FT-IR spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Due to the potential application of materials based on MoS2 as the catalyst for hydrogen evolution reaction, linear sweep voltammetry (LSV) of the commercial MoS2, synthesized MoS2 and the obtained hybrid nanostructures was performed using a three-electrode system. The results show that the developed synthesis of hybrid MoS2/GO nanostructures in continuous reactors is a novel and facile method for obtaining products with desired properties. The hybrid nanostructures have shown better electrochemical properties and higher onset potentials compared to MoS2 nanoparticles. The results indicate that the addition of carbon nanomaterials during the synthesis improves the activity and stability of the MoS2 nanoparticles.
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16
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Chen TR, Wang YX, Lee WJ, Chen KHC, Chen JD. A reduced graphene oxide-supported iridium nanocatalyst for selective transformation of alcohols into carbonyl compounds via a green process. NANOTECHNOLOGY 2020; 31:285705. [PMID: 32191921 DOI: 10.1088/1361-6528/ab814d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A nanocatalyst constructed from reduced graphene oxide and iridium atoms (RGOIrNc) showed high selectivity (99%-100%) and reliability for the transformation of aromatic alcohols into carbonyl compounds via ultrasonication without using harmful chemicals and solvents. Experimental data including Fourier transform infrared spectroscopy, x-ray diffraction, spherical-aberration-corrected field emission transmission electron microscopy and Raman spectra confirmed the nanostructure of the RGOIrNc. Noticeably, the structural characteristics of this catalyst remained unchanged within 25 catalytic cycles and the activity and selectivity for the transformation of benzylic alcohols showed good stability. The average turnover frequency is greater than 9000 h-1, the total turnover number is more than 150 000 after 25 catalytic cycles and the productivity of carbonyl compounds reaches 376 048 [Formula: see text], indicating that RGOIrNc catalyst has good durability and stability and high 'greenness'.
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Affiliation(s)
- Tsun-Ren Chen
- Department of Applied Chemistry, National Ping Tung University, Pingtong City, Taiwan
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17
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Zhang R, Zhang T, Cai Y, Zhu X, Han Q, Li Y, Liu Y. Reduced Graphene Oxide-Doped Ag3PO4 Nanostructure as a High Efficiency Photocatalyst Under Visible Light. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-019-01214-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ye J, Liu SQ, Liu WX, Meng ZD, Luo L, Chen F, Zhou J. Photocatalytic Simultaneous Removal of Nitrite and Ammonia via a Zinc Ferrite/Activated Carbon Hybrid Catalyst under UV-Visible Irradiation. ACS OMEGA 2019; 4:6411-6420. [PMID: 31459776 PMCID: PMC6648888 DOI: 10.1021/acsomega.8b00677] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/14/2018] [Indexed: 05/25/2023]
Abstract
Nitrite and ammonia often coexist in waters. Thus, it is very significant to develop a photocatalytic process for the simultaneous removal of nitrite and ammonia. Herein, zinc ferrite/activated carbon (ZnFe2O4/AC) was synthesized and characterized by X-ray diffraction spectroscopy, transmission electron microscopy, Raman spectroscopy, and ultraviolet-visible diffuse reflectance spectroscopy. The valence band level of ZnFe2O4 was measured by X-ray photoelectron spectroscopy-valence band spectroscopy, and first-principles calculation was performed to confirm the band structure of ZnFe2O4. The as-synthesized ZnFe2O4/AC species functioned as a photocatalyst to simultaneously remove nitrite and ammonia under anaerobic conditions upon UV-visible light irradiation at the first stage. The results indicated that an average removal ratio of 92.7% with ±0.2% error for nitrite degradation for three runs was achieved in 50.0 mg/L nitrite + 100.0 mg/L ammonia solution with pH 9.5 under anaerobic conditions for 3 h at this stage; simultaneously, the removal ratio of 64.0% with ±0.2% error for ammonia was also achieved. At the second stage, oxygen gas was bubbled in the reactor to photocatalytically eliminate residual ammonia under aerobic conditions upon continuous irradiation. The results demonstrated that the removal ratios for nitrite, ammonia, and total nitrogen reached to 92.0, 90.0, and 90.2% at 12th hour, respectively, and the product released during photocatalysis is N2 gas, detected by gas chromatography, fulfilling the simultaneous removal of nitrite and ammonia. The reaction mechanism was exploited.
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Affiliation(s)
| | | | | | | | - Li Luo
- E-mail: . Phone: +86 51268415070 (L.L.)
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Chandrasekaran S, Yao L, Deng L, Bowen C, Zhang Y, Chen S, Lin Z, Peng F, Zhang P. Recent advances in metal sulfides: from controlled fabrication to electrocatalytic, photocatalytic and photoelectrochemical water splitting and beyond. Chem Soc Rev 2019; 48:4178-4280. [DOI: 10.1039/c8cs00664d] [Citation(s) in RCA: 540] [Impact Index Per Article: 108.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review describes an in-depth overview and knowledge on the variety of synthetic strategies for forming metal sulfides and their potential use to achieve effective hydrogen generation and beyond.
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Affiliation(s)
| | - Lei Yao
- Shenzhen Key Laboratory of Special Functional Materials
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
| | - Libo Deng
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Chris Bowen
- Department of Mechanical Engineering
- University of Bath
- Bath
- UK
| | - Yan Zhang
- Department of Mechanical Engineering
- University of Bath
- Bath
- UK
| | - Sanming Chen
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Zhiqun Lin
- School of Materials Science and Engineering
- Georgia Institute of Technology
- Atlanta
- USA
| | - Feng Peng
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou
- China
| | - Peixin Zhang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- China
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Ritzert NL, Szalai VA, Moffat TP. Mapping Electron Transfer at MoS 2 Using Scanning Electrochemical Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13864-13870. [PMID: 30372618 PMCID: PMC6501596 DOI: 10.1021/acs.langmuir.8b02731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Understanding the role of macroscopic and atomic defects in the interfacial electron transfer properties of layered transition metal dichalcogenides is important in optimizing their performance in energy conversion and electronic devices. Means of determining the heterogeneous electron transfer rate constant, k, have relied on the deliberate exposure of specific electrode regions or additional surface characterization to correlate proposed active sites to voltammetric features. Few studies have investigated the electrochemical activity of surface features of layered dichalcogenides under the same experimental conditions. Herein, MoS2 flakes with well-defined features were mapped using scanning electrochemical microscopy (SECM). At visually flat areas of MoS2, k of hexacyanoferrate(III) ([Fe(CN)6]3-) and hexacyanoferrate(II) ([Fe(CN)6]4-) was typically smaller and spanned a larger range than that of hexaammineruthenium(III) ([Ru(NH3)6]3+), congruent with the current literature. However, in contrast to previous studies, the reduction of [Fe(CN)6]3- and the oxidation of [Fe(CN)6]4- exhibited similar rate constants, attributed to the dominance of charge transfer through surface states. The comparison of SECM with optical and atomic force microscopy images revealed that while most of the flake was electroactive, edge sites associated with freshly exposed areas that include macrosteps consisting of several monolayers as well as recessed areas exhibited the highest reactivity, consistent with the reported results.
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Affiliation(s)
- Nicole L Ritzert
- Theiss Research , P.O. Box 127, La Jolla , California 92038 , United States
- Maryland NanoCenter , University of Maryland , College Park , Maryland 20742 , United States
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