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Wang C, Yang F, Feng L. Recent advances in iridium-based catalysts with different dimensions for the acidic oxygen evolution reaction. NANOSCALE HORIZONS 2023; 8:1174-1193. [PMID: 37434582 DOI: 10.1039/d3nh00156c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Proton exchange membrane (PEM) water electrolysis is considered a promising technology for green hydrogen production, and iridium (Ir)-based catalysts are the best materials for anodic oxygen evolution reactions (OER) owing to their high stability and anti-corrosion ability in a strong acid electrolyte. The properties of Ir-based nanocatalysts can be tuned by rational dimension engineering, which has received intensive attention recently for catalysis ability boosting. To achieve a comprehensive understanding of the structural and catalysis performance, herein, an overview of the recent progress was provided for Ir-based catalysts with different dimensions for the acidic OER. The promotional effect was first presented in terms of the nano-size effect, synergistic effect, and electronic effect based on the dimensional effect, then the latest progress of Ir-based catalysts classified into zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) catalysts was introduced in detail; and the practical application of some typical examples in the real PEM water electrolyzers (PEMWE) was also presented. Finally, the problems and challenges faced by current dimensionally engineered Ir-based catalysts in acidic electrolytes were discussed. It is concluded that the increased surface area and catalytic active sites can be realized by dimensional engineering strategies, while the controllable synthesis of different dimensional structured catalysts is still a great challenge, and the correlation between structure and performance, especially for the structural evolution during the electrochemical operation process, should be probed in depth. Hopefully, this effort could help understand the progress of dimensional engineering of Ir-based catalysts in OER catalysis and contribute to the design and preparation of novel efficient Ir-based catalysts.
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Affiliation(s)
- Chunyan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, P. R. China.
| | - Fulin Yang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, P. R. China.
| | - Ligang Feng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, P. R. China.
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2
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Khan S, Noor T, Iqbal N, Pervaiz E, Yaqoob L. A zeolitic imidazolate framework (ZIF-67) and graphitic carbon nitride (g-C 3N 4) composite based efficient electrocatalyst for overall water-splitting reaction. RSC Adv 2023; 13:24973-24987. [PMID: 37614795 PMCID: PMC10442768 DOI: 10.1039/d3ra04783k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/16/2023] [Indexed: 08/25/2023] Open
Abstract
Designing of non-noble, cost-effective, sustainable catalysts for water splitting is essential for hydrogen production. In this research work, ZIF-67, g-C3N4, and their composite (1, 3, 5, 6, 8 wt% g-C3N4@ZIF-67) are synthesized, and various techniques, XRD, FTIR, SEM, EDX and BET are used to examine their morphological properties for electrochemical water-splitting. The linkage of ZIF-67 with g-C3N4 synergistically improves the electrochemical kinetics. An appropriate integration of g-C3N4 in ZIF-67 MOF improves the charge transfer between the electrode and electrolyte and makes it a suitable option for electrochemical applications. In alkaline media, the composite of ZIF-67 MOF with g-C3N4 over a Ni-foam exhibits a superior catalyst activity for water splitting application. Significantly, the 3 wt% g-C3N4@ZIF67 composite material reveals remarkable results with low overpotential values of -176 mV@10 mA cm-2, 152 mV@10 mA cm-2 for HER and OER. The catalyst remained stable for 24 h without distortion. The 3 wt% composite also shows a commendable performance for overall water-splitting with a voltage yield of 1.34 v@10 mA cm-2. The low contact angle (54.4°) proves the electrocatalyst's hydrophilic nature. The results of electrochemical water splitting illustrated that 3 wt% g-C3N4@ZIF-67 is an electrically conductive, stable, and hydrophilic-nature catalyst and is suggested to be a promising candidate for electrochemical water-splitting application.
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Affiliation(s)
- Sadia Khan
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan +92 51 90855121
| | - Tayyaba Noor
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan +92 51 90855121
| | - Naseem Iqbal
- U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan
| | - Erum Pervaiz
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan +92 51 90855121
| | - Lubna Yaqoob
- U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan
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3
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Sarkar DK, Selvanathan V, Mottakin M, Hasan AKM, Islam MA, Almohamadi H, Alharthi NH, Akhtaruzzaman M. Phytochemical-assisted green synthesis of CuFeO x nano-rose electrocatalysts for oxygen evolution reaction in alkaline media. RSC Adv 2023; 13:19130-19139. [PMID: 37362330 PMCID: PMC10288342 DOI: 10.1039/d3ra02512h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
This study represents a green synthesis method for fabricating an oxygen evolution reaction (OER) electrode by depositing two-dimensional CuFeOx on nickel foam (NF). Two-dimensional CuFeOx was deposited on NF using in situ hydrothermal synthesis in the presence of Aloe vera extract. This phytochemical-assisted synthesis of CuFeOx resulted in a unique nano-rose-like morphology (petal diameter 30-70 nm), which significantly improved the electrochemical surface area of the electrode. The synthesized electrode was analyzed for its OER electrocatalytic activity and it was observed that using 75% Aloe vera extract in the phytochemical-assisted synthesis of CuFeOx resulted in improved OER electrocatalytic performance by attaining an overpotential of 310 mV for 50 mA cm-2 and 410 mV for 100 mA cm-2. The electrode also sustained robust stability throughout the 50 h of chronopotentiometry studies under alkaline electrolyte conditions, demonstrating its potential as an efficient OER electrode material. This study highlights the promising use of Aloe vera extract as a green and cost-effective way to synthesize efficient OER electrode materials.
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Affiliation(s)
- D K Sarkar
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
- Department of Applied Chemistry and Chemical Engineering, Rajshahi University Rajshahi-6205 Bangladesh
| | - V Selvanathan
- Institute of Sustainable Energy, Universiti Tenaga Nasional (The Energy University) Jalan Ikram-Uniten Kajang 43000 Selangor Malaysia
| | - M Mottakin
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
- Department of Applied Chemistry and Chemical Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University Gopalganj-8100 Bangladesh
| | - A K Mahmud Hasan
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
| | - Md Ariful Islam
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
| | - Hamad Almohamadi
- Department of Chemical Engineering, Faculty of Engineering, Islamic University of Madinah Madinah Saudi Arabia
| | - Nabeel H Alharthi
- Department of Mechanical Engineering, Faculty of Engineering, Islamic University of Madinah Madinah Saudi Arabia
- Department of Mechanical Engineering, College of Engineering, King Saud University Riyadh 11421 Saudi Arabia
| | - Md Akhtaruzzaman
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan 43600 Malaysia
- Graduate School of Pure and Applied Sciences, University of Tsukuba Tsukuba Ibaraki 305-8573 Japan
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4
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Suhadolnik L, Bele M, Čekada M, Jovanovič P, Maselj N, Lončar A, Dražić G, Šala M, Hodnik N, Kovač J, Montini T, Melchionna M, Fornasiero P. Nanotubular TiO x N y -Supported Ir Single Atoms and Clusters as Thin-Film Electrocatalysts for Oxygen Evolution in Acid Media. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:2612-2623. [PMID: 37008408 PMCID: PMC10061659 DOI: 10.1021/acs.chemmater.3c00125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/22/2023] [Indexed: 06/19/2023]
Abstract
A versatile approach to the production of cluster- and single atom-based thin-film electrode composites is presented. The developed TiO x N y -Ir catalyst was prepared from sputtered Ti-Ir alloy constituted of 0.8 ± 0.2 at % Ir in α-Ti solid solution. The Ti-Ir solid solution on the Ti metal foil substrate was anodically oxidized to form amorphous TiO2-Ir and later subjected to heat treatment in air and in ammonia to prepare the final catalyst. Detailed morphological, structural, compositional, and electrochemical characterization revealed a nanoporous film with Ir single atoms and clusters that are present throughout the entire film thickness and concentrated at the Ti/TiO x N y -Ir interface as a result of the anodic oxidation mechanism. The developed TiO x N y -Ir catalyst exhibits very high oxygen evolution reaction activity in 0.1 M HClO4, reaching 1460 A g-1 Ir at 1.6 V vs reference hydrogen electrode. The new preparation concept of single atom- and cluster-based thin-film catalysts has wide potential applications in electrocatalysis and beyond. In the present paper, a detailed description of the new and unique method and a high-performance thin film catalyst are provided along with directions for the future development of high-performance cluster and single-atom catalysts prepared from solid solutions.
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Affiliation(s)
- Luka Suhadolnik
- Department
of Chemical and Pharmaceutical Sciences, CNR-ICCOM Trieste and INSTM
Trieste Research Units, University of Trieste, via L. Giorgieri 1, 34127 Trieste, Italy
| | - Marjan Bele
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Miha Čekada
- Department
of Thin Films and Surfaces, Jožef
Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Primož Jovanovič
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Nik Maselj
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- Faculty
of Chemistry and Chemical Technology, University
of Ljubljana, Večna
pot 113, SI-1000 Ljubljana, Slovenia
| | - Anja Lončar
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- University
of Nova Gorica, Vipavska
13, SI-5000 Nova
Gorica, Slovenia
| | - Goran Dražić
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Martin Šala
- Department
of Analytical Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Nejc Hodnik
- Department
of Materials Chemistry, National Institute
of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- University
of Nova Gorica, Vipavska
13, SI-5000 Nova
Gorica, Slovenia
- Jožef
Stefan International Postgraduate School, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Janez Kovač
- Department
of Surface Engineering, Jožef Stefan
Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Tiziano Montini
- Department
of Chemical and Pharmaceutical Sciences, CNR-ICCOM Trieste and INSTM
Trieste Research Units, University of Trieste, via L. Giorgieri 1, 34127 Trieste, Italy
| | - Michele Melchionna
- Department
of Chemical and Pharmaceutical Sciences, CNR-ICCOM Trieste and INSTM
Trieste Research Units, University of Trieste, via L. Giorgieri 1, 34127 Trieste, Italy
| | - Paolo Fornasiero
- Department
of Chemical and Pharmaceutical Sciences, CNR-ICCOM Trieste and INSTM
Trieste Research Units, University of Trieste, via L. Giorgieri 1, 34127 Trieste, Italy
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5
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Efficient electrochemical water oxidation mediated by different substituted manganese-salophen complexes. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Tian H, Zhang K, Feng X, Chen J, Lou Y. Self-supported CoMoO 4/NiFe-LDH core-shell nanorods grown on nickel foam for enhanced electrocatalysis of oxygen evolution. Dalton Trans 2022; 51:13762-13770. [PMID: 36018311 DOI: 10.1039/d2dt02167f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Developing high-performance catalysts is an effective strategy for speeding up the oxygen evolution reaction (OER) and increasing production efficiency. Here, a core-shell electrocatalyst consisting of CoMoO4 nanorods grown in situ on nickel foam substrate covered by nickel-iron layered double hydroxide (NiFe-LDH) via electrodeposition was demonstrated (CoMoO4/NiFe-LDH@NF). Experimental investigations revealed that self-supporting and binder-free electrodes ensured that the catalysts exposed an abundance of active sites, faster electron transfer, and excellent long-cycle stability. The NiFe-LDH shell with a crystalline-amorphous dual structure served as an accurate active material, lowering the energy barrier and contributing more catalytic sites for water oxidation. Furthermore, the core CoMoO4 nanorods not only effectively avoided the accumulation of NiFe-LDH to increase the electrochemically active area but also acted as a highway for electrons from the active site to the substrate to promote the OER kinetics. Specifically, CoMoO4/NiFe-LDH@NF exhibited lower overpotential (180 mV at 10 mA cm-2) and smaller Tafel slope (34 mV dec-1) than pure CoMoO4@NF and NiFe-LDH@NF, revealing its excellent catalytic performance and fast intrinsic reaction kinetics. In addition, CoMoO4/NiFe-LDH@NF exhibited long-term stability of more than 20 h at 50 mA cm-2, further demonstrating its potential for practical applications. These findings pointed to a potential option for building innovative OER catalysts.
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Affiliation(s)
- Haoze Tian
- School of Chemistry and Chemical Engineering, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and device, Southeast University, Nanjing 211189, PR China.
| | - Ke Zhang
- School of Chemistry and Chemical Engineering, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and device, Southeast University, Nanjing 211189, PR China.
| | - Xiaoan Feng
- School of Chemistry and Chemical Engineering, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and device, Southeast University, Nanjing 211189, PR China.
| | - Jinxi Chen
- School of Chemistry and Chemical Engineering, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and device, Southeast University, Nanjing 211189, PR China.
| | - Yongbing Lou
- School of Chemistry and Chemical Engineering, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and device, Southeast University, Nanjing 211189, PR China.
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7
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Effect of synthesis route on electrocatalytic water-splitting activity of MoS2/UiO-66 hybrid. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Huang Y, Wang Z, Shen S, Huang L, Zhong W, Pan J, Li C. Double-wall carbon nanotube assisted phase engineering in CoO xS y complex for efficient oxygen evolution reaction. CrystEngComm 2022. [DOI: 10.1039/d2ce00660j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sluggish electron kinetics in oxygen evolution reaction (OER) is one of the main factors restricting the development of hydrogen production technology from electrical water splitting, while the key to break...
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9
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Covalently Bonded Ir(IV) on Conducted Blue TiO2 for Efficient Electrocatalytic Oxygen Evolution Reaction in Acid Media. Catalysts 2021. [DOI: 10.3390/catal11101176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The stability of anode electrode has been a primary obstacle for the oxygen evolution reaction (OER) in acid media. We design Ir-oxygen of hydroxyl-rich blue TiO2 through covalent bonds (Ir–O2–2Ti) and investigate the outcome of favored exposure of different amounts of covalent Ir–oxygen linked to the conductive blue TiO2 in the acidic OER. The Ir-oxygen-blue TiO2 nanoclusters show a strong synergy in terms of improved conductivity and tiny amount usage of Ir by using blue TiO2 supporter, and enhanced stability using covalent Ir-oxygen-linking (i.e., Ir oxide) in acid media, leading to high acidic OER performance with a current density of 10 mA cm−2 at an overpotential of 342 mV, which is much higher than that of IrO2 at 438 mV in 0.1 M HClO4 electrolyte. Notably, the Ir–O2–2Ti has a great mass activity of 1.38 A/mgIr at an overpotential 350 mV, which is almost 27 times higher than the mass activity of IrO2 at the same overpotential. Therefore, our work provides some insight into non-costly, highly enhanced, and stable electrocatalysts for the OER in acid media.
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10
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Xu Y, Ren K, Xu R. In situ formation of amorphous Fe-based bimetallic hydroxides from metal-organic frameworks as efficient oxygen evolution catalysts. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63741-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Abstract
The synthesis of nanomaterials, with characteristic dimensions of 1 to 100 nm, is a key component of nanotechnology. Vapor-phase synthesis of nanomaterials has numerous advantages such as high product purity, high-throughput continuous operation, and scalability that have made it the dominant approach for the commercial synthesis of nanomaterials. At the same time, this class of methods has great potential for expanded use in research and development. Here, we present a broad review of progress in vapor-phase nanomaterial synthesis. We describe physically-based vapor-phase synthesis methods including inert gas condensation, spark discharge generation, and pulsed laser ablation; plasma processing methods including thermal- and non-thermal plasma processing; and chemically-based vapor-phase synthesis methods including chemical vapor condensation, flame-based aerosol synthesis, spray pyrolysis, and laser pyrolysis. In addition, we summarize the nanomaterials produced by each method, along with representative applications, and describe the synthesis of the most important materials produced by each method in greater detail.
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Affiliation(s)
- Mohammad Malekzadeh
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and RENEW Institute, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
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12
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Xue F, Guo X, Min B, Si Y, Huang H, Shi J, Liu M. Unconventional High-Index Facet of Iridium Boosts Oxygen Evolution Reaction: How the Facet Matters. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01867] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fei Xue
- International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
| | - Xinyang Guo
- International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
| | - Boya Min
- International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
| | - Yitao Si
- International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
| | - Hongwen Huang
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Jinwen Shi
- International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
| | - Maochang Liu
- International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P. R. China
- Suzhou Academy of Xi’an Jiaotong University, Suzhou, Jiangsu 215123, P. R. China
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13
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Lin Z, Shen S, Wang Z, Zhong W. Laser ablation in air and its application in catalytic water splitting and Li-ion battery. iScience 2021; 24:102469. [PMID: 34027323 PMCID: PMC8121973 DOI: 10.1016/j.isci.2021.102469] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Pulse laser has been widely used in both fundamental science and practical technologies. In this perspective, we highlight the employment of pulse laser ablation in air (LAA) in energy-related catalytic reactions. With LAA, samples are directly ablated in ambient air, which makes this technology facile to conduct. Materials can be modified by LAA in multiple aspects, such as morphology modulation, heterojunction fabrication, or defects engineering, which are desired features for energy-related catalytic reactions. We begin this perspective with a brief introduction of this technology, including the mechanism, the experimental setup, and the characteristic of laser-ablated materials. The recent works utilizing LAA are then summarized to prove the promising prospects of LAA in the energy field. Finally, several opportunities about the future usage of LAA are proposed and discussed.
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Affiliation(s)
- Zhiping Lin
- School of Advanced Study, Taizhou University, Taizhou, Zhejiang 318000, China
| | - Shijie Shen
- School of Advanced Study, Taizhou University, Taizhou, Zhejiang 318000, China
| | - Zongpeng Wang
- School of Advanced Study, Taizhou University, Taizhou, Zhejiang 318000, China
| | - Wenwu Zhong
- School of Advanced Study, Taizhou University, Taizhou, Zhejiang 318000, China
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14
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Guo F, Xu Z, Zhang W, Wang T, Di X, Zhang Q, Zhu Z. Facile synthesis of catalase@ZIF-8 composite by biomimetic mineralization for efficient biocatalysis. Bioprocess Biosyst Eng 2021; 44:1309-1319. [PMID: 33640996 DOI: 10.1007/s00449-021-02540-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 02/15/2021] [Indexed: 10/22/2022]
Abstract
Enzymes immobilized in metal-organic frameworks (MOFs) have attracted great attention as a promising hybrid material. In the study, a novel biomimetic mineralization encapsulation process for a highly stable and easily reusable catalase (CAT)@ZIF-8 composite has been designed. This immobilization process provides a high enzyme loading of 70 wt %. The CAT@ZIF-8 composites exhibited a much lower Km value and better enzyme activity than those of free CAT, exhibiting good stability against enzymatic hydrolysis and protein denaturation under harsh conditions. The inhibitory effects of pesticides such as pH, temperature, solvent (i.e., methanol, dimethyl sulfoxide and tetrahydrofuran) and storage at room temperature (6 months) on the activity of free and immobilized catalase enzyme were investigated. The CAT@MOF composites also exhibited excellent reusability, an obvious advantage for treating a wastewater from food processing. The CAT@MOF developed is promising for the efficient removal of H2O2 under harsh conditions.
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Affiliation(s)
- Feng Guo
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China.
| | - Zhonghao Xu
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China
| | - Wendong Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China
| | - Tongxin Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China
| | - Xiaoxuan Di
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China
| | - Qian Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China
| | - Zihan Zhu
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Ocean Science and Technology, Dalian University of Technology, Ministry of Education, Panjin, 124221, China
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15
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Kashif M, Fiaz M, Athar M. One-step hydrothermal synthesis of ZnO nanorods as efficient oxygen evolution reaction catalyst. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2020.1862223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Muhammad Kashif
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Fiaz
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Athar
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
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16
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Shaghaghi Z, Kouhsangini PS, Mohammad‐Rezaei R. Water oxidation activity of azo‐azomethine‐based Ni (II), Co (II), and Cu (II) complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zohreh Shaghaghi
- Coordination Chemistry Research Laboratory, Department of Chemistry, Faculty of Basic Science Azarbaijan Shahid Madani University Tabriz 5375171379 Iran
| | - Parya Sallakh Kouhsangini
- Coordination Chemistry Research Laboratory, Department of Chemistry, Faculty of Basic Science Azarbaijan Shahid Madani University Tabriz 5375171379 Iran
| | - Rahim Mohammad‐Rezaei
- Electrochemistry Research Laboratory, Department of Chemistry, Faculty of Basic Science Azarbaijan Shahid Madani University Tabriz 5375171379 Iran
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17
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Huang Y, Huang J, Xu K, Geng R. Constructing NiSe2@MoS2 nano-heterostructures on a carbon fiber paper for electrocatalytic oxygen evolution. RSC Adv 2021; 11:26928-26936. [PMID: 35479997 PMCID: PMC9037618 DOI: 10.1039/d1ra05509g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 07/24/2021] [Indexed: 01/10/2023] Open
Abstract
Although MoS2 has shown its potential as an electro-catalyst for the oxygen evolution reaction (OER), its research is still insufficient. In this study, as a novel MoS2-based heterostructure electro-catalyst for OER, namely NiSe2@MoS2 nano-heterostructure, was constructed on a carbon fiber paper (CFP) substrate by a simple approach, which includes electrochemical deposition of NiSe2 film and hydrothermal processing of MoS2 film. In addition to a series of observations on the material structure, electrocatalytic OER performance of NiSe2@MoS2 was fully evaluated and further compared with other MoS2-based OER electro-catalysts. It exhibits an outstanding catalytic performance with an overpotential η10 of 267 mV and a Tafel slope of 85 mV dec−1. Only 6% loss of current density before and after 10 h indicates its excellent durability. The results indicate that the obtained NiSe2@MoS2 is an excellent OER electro-catalyst and worth exploring as a substitute for noble metal-based materials. Although MoS2 has shown its potential as an electro-catalyst for the oxygen evolution reaction (OER), its research is still insufficient.![]()
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Affiliation(s)
- Yazhou Huang
- Industrial Center, Nanjing Institute of Technology, Nanjing 211167, People's Republic of China
| | - Jiacai Huang
- Industrial Center, Nanjing Institute of Technology, Nanjing 211167, People's Republic of China
| | - Kunshan Xu
- Industrial Center, Nanjing Institute of Technology, Nanjing 211167, People's Republic of China
| | - Ranran Geng
- Industrial Center, Nanjing Institute of Technology, Nanjing 211167, People's Republic of China
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18
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Wang X, Liu Y, Wei T, Sun J, Song X, Chen P, He J, Shen X, Zhu G. A Wet Impregnation Strategy for Advanced FeNi‐Based Electrocatalysts towards Oxygen Evolution. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xueyang Wang
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
| | - Yuanjun Liu
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang 202018 China
| | - Tiange Wei
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
| | - Jinyong Sun
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
| | - Xuefeng Song
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
| | - Peng Chen
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
| | - Jinghui He
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 P. R. China
| | - Xiaoping Shen
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
| | - Guoxing Zhu
- School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China
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19
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Nandan R, Goswami GK, Nanda KK. Energy-Efficient Rational Designing of Multifunctional Nanocomposites by Preferential Anchoring of Metal Ions via Fermi Level Positioning of Carbon Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53749-53759. [PMID: 33207878 DOI: 10.1021/acsami.0c14858] [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
Despite the availability and dedicated studies on a variety of carbon nanostructures, amorphous carbon is still a preferred support for a wide range of commercially available metal catalysts. In order to shed some light on this, we carried out electroless deposition of metal nanoparticles on various carbon nanostructures such as amorphous carbon (a-C), carbon nanotubes (CNTs), and nitrogen-doped CNTs (NCNTs) under similar experimental conditions. The main objective is to elucidate the preferable deposition on a particular carbon nanostructure, if any, and understand the underlying mechanism. Experimental results unveil preferred electroless deposition of metal nanoparticles on a-C over CNTs and NCNTs. Notably, the deposition is nicely correlated with the position of the Fermi level (EF) with respect to the Mn+ ↔ M0 redox level (E0). Remarkably, EF is found to be in the following order NCNT > CNT > a-C and the smaller gap (E0-EF) favors the faster electron transfer, resulting in the preferential reduction of Mn+, yielding finer nanoparticles on a-C. We believe that this approach can pave the way for designing noble metal-based carbon nanocomposites for a variety of applications, ranging from environmental redemption to electrochemical energy harvesting. As case studies, we have explored the nanocomposites for various catalytic activities and found them to be very competent with recently reported various state-of-the-art electrocatalysts and their commercial counterparts.
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Affiliation(s)
- Ravi Nandan
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | | | - Karuna Kar Nanda
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
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20
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MnO2/multi-walled carbon nanotubes based nanocomposite with enhanced electrocatalytic activity for sensitive amperometric glucose biosensing. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114602] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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21
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Karajagi I, Ramya K, Ghosh PC, Sarkar A, Rajalakshmi N. Co-doped carbon materials synthesized with polymeric precursors as bifunctional electrocatalysts. RSC Adv 2020; 10:35966-35978. [PMID: 35517101 PMCID: PMC9056983 DOI: 10.1039/d0ra07100e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/19/2020] [Indexed: 12/28/2022] Open
Abstract
The design of stable and high performance metal free bifunctional electrocatalysts is a necessity in alkaline zinc–air batteries for oxygen reduction and evolution reaction. In the present work co-doped carbon materials have been developed from polymeric precursors with abundant active sites to achieve bifunctional activity. A 3-dimensional microporous nitrogen–carbon (NC) and co-doped nitrogen–sulfur–carbon (NSC) and nitrogen–phosphorus–carbon (NPC) were synthesized using poly(2,5-benzimidazole) as an N containing precursor. The obtained sheet like structure shows outstanding ORR and OER performance in alkaline systems with excellent stability compared to Pt/C catalyst. The doped heteroatom in the carbon is expected to have redistributed the charge around heteroatom dopants lowering the ORR potential and modifying the oxygen chemisorption mode thereby weakening the O–O bonding and improving the ORR activity and overall catalytic performance. The bifunctional activity (ΔE = Ej=10 − E1/2) of an air electrode for NPC, NSC, NC and Pt/C is 0.82 V, 0.87 V, 1.06 V and 1.03 V respectively, and the NPC value is smaller than most of the reported metal and non-metal based electrocatalysts. The ORR (from onset potential) and OER (10 mA cm−2) overpotential for NPC, NSC, and NC is (290 mV, 410 mV), (310 mV, 450 mV) and (340 mV, 600 mV) respectively. In the prepared catalyst the NPC exhibited higher ORR and OER activity (NPC > NSC > NC). The doping of P in NPC is found to have a great influence on the microstructure and therefore on the ORR and OER activity. Metal free bifunctional catalysts based on co-doped carbon materials synthesized from polymeric precursors via a simple pyrolysis route with high cyclic stability and low polarization for Zn–air batteries.![]()
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Affiliation(s)
- Imran Karajagi
- Centre for Fuel Cell Technology (CFCT), International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) 2nd Floor, IIT-M Research Park, Block E, 6 Kanagam Road, Taramani Chennai - 600113 India .,Centre for Research in Nanotechnology and Science (CRNTS), Indian Institute of Technology Bombay Powai Mumbai - 400076 India
| | - K Ramya
- Centre for Fuel Cell Technology (CFCT), International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) 2nd Floor, IIT-M Research Park, Block E, 6 Kanagam Road, Taramani Chennai - 600113 India
| | - P C Ghosh
- Department of Energy Science and Engineering, Indian Institute of Technology Bombay Powai Mumbai - 400076 India
| | - A Sarkar
- Department of Chemical Engineering, Indian Institute of Technology Bombay Powai Mumbai - 400076 India
| | - N Rajalakshmi
- Centre for Fuel Cell Technology (CFCT), International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) 2nd Floor, IIT-M Research Park, Block E, 6 Kanagam Road, Taramani Chennai - 600113 India
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22
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Saad A, Shen H, Cheng Z, Arbi R, Guo B, Hui LS, Liang K, Liu S, Attfield JP, Turak A, Wang J, Yang M. Mesoporous Ternary Nitrides of Earth-Abundant Metals as Oxygen Evolution Electrocatalyst. NANO-MICRO LETTERS 2020; 12:79. [PMID: 34138285 PMCID: PMC7770804 DOI: 10.1007/s40820-020-0412-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 02/20/2020] [Indexed: 05/06/2023]
Abstract
As sustainable energy becomes a major concern for modern society, renewable and clean energy systems need highly active, stable, and low-cost catalysts for the oxygen evolution reaction (OER). Mesoporous materials offer an attractive route for generating efficient electrocatalysts with high mass transport capabilities. Herein, we report an efficient hard templating pathway to design and synthesize three-dimensional (3-D) mesoporous ternary nickel iron nitride (Ni3FeN). The as-synthesized electrocatalyst shows good OER performance in an alkaline solution with low overpotential (259 mV) and a small Tafel slope (54 mV dec-1), giving superior performance to IrO2 and RuO2 catalysts. The highly active contact area, the hierarchical porosity, and the synergistic effect of bimetal atoms contributed to the improved electrocatalytic performance toward OER. In a practical rechargeable Zn-air battery, mesoporous Ni3FeN is also shown to deliver a lower charging voltage and longer lifetime than RuO2. This work opens up a new promising approach to synthesize active OER electrocatalysts for energy-related devices.
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Affiliation(s)
- Ali Saad
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Hangjia Shen
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Zhixing Cheng
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - Ramis Arbi
- Department of Engineering Physics, McMaster University, Hamilton, L8S 4L7, Canada
| | - Beibei Guo
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, People's Republic of China
| | - Lok Shu Hui
- Department of Engineering Physics, McMaster University, Hamilton, L8S 4L7, Canada
| | - Kunyu Liang
- Department of Engineering Physics, McMaster University, Hamilton, L8S 4L7, Canada
| | - Siqi Liu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang Province, People's Republic of China
| | - John Paul Attfield
- Centre for Science at Extreme Conditions and EaStCHEM School of Chemistry, University of Edinburgh, Kings Buildings, West Mains Road, Edinburgh, EH9 3JJ, UK
| | - Ayse Turak
- Department of Engineering Physics, McMaster University, Hamilton, L8S 4L7, Canada.
| | - Jiacheng Wang
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, People's Republic of China.
| | - Minghui Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang Province, People's Republic of China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
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23
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Zhu JY, Xue Q, Xue YY, Ding Y, Li FM, Jin P, Chen P, Chen Y. Iridium Nanotubes as Bifunctional Electrocatalysts for Oxygen Evolution and Nitrate Reduction Reactions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:14064-14070. [PMID: 32125818 DOI: 10.1021/acsami.0c01937] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
One-dimensionally (1D) hollow noble meal nanotubes are attracting continuous attention because of their huge potential applications in catalysis and electrocatalysis. Herein, we successfully synthesize hollow iridium nanotubes (Ir NTs) with the rough porous surface by the 1-hydroxyethylidene-1, 1-diphosphonic acid-induced self-template method under hydrothermal conditions and investigate their electrocatalytic performance for oxygen evolution (OER) and nitrate reduction reactions (NO3-RR) in an acidic electrolyte. The unique 1D and porous structure endow Ir NTs with big surface areas, high conductivity, and optimal atom utilization efficiency. Consequently, Ir NTs exhibit significantly enhanced activity and durability for acidic OERs compared with commercial Ir nanocrystals (Ir c-NCs), which only require the overpotential of 245 mV to deliver the current density of 10 mA cm-2. Meanwhile, Ir NTs also show higher electrocatalytic activity for NO3-RR than that of Ir c-NCs, such as a Faraday efficiency of 84.7% and yield rate of 921 μg h-1 mgcat-1 for ammonia generation, suggesting that Ir NTs are universally advanced Ir-based electrocatalysts.
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Affiliation(s)
- Jing-Yi Zhu
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Qi Xue
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Yuan-Yuan Xue
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Yu Ding
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Fu-Min Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Pujun Jin
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Pei Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Yu Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, PR China
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24
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Imbault AL, Gong J, Farnood R. Photocatalytic production of dihydroxyacetone from glycerol on TiO 2 in acetonitrile. RSC Adv 2020; 10:4956-4968. [PMID: 35498327 PMCID: PMC9049670 DOI: 10.1039/c9ra09434b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 01/20/2020] [Indexed: 01/24/2023] Open
Abstract
In this paper, photocatalytic production of dihydroxyacetone (DHA) from glycerol in acetonitrile on TiO2 was investigated. HPLC-MS analysis showed that glycerol was converted to DHA, glyceraldehyde (GAD), glyceric acid and several other chemicals. Using acetonitrile as the reaction medium instead of water not only provided a more selective process for production of DHA but also increased the glycerol conversion. After 300 min, with 1 g L−1 catalyst loading and 4 mM initial glycerol concentration, glycerol conversion and DHA selectivity were 96.8% and 17.8% in acetonitrile compared to 36.1% and 14.7% in water, respectively. The half-life of glycerol decreased by a factor of 6.2, from 467 min to 75 min, by changing the solvent from water to acetonitrile. Experiments using biodiesel-derived crude glycerol verified the effectiveness of the proposed process for the photocatalytic production of DHA from crude glycerol. A mechanism was proposed to explain the higher selectivity towards DHA over GAD in this process. Photocatalytic conversion of glycerol and selectivity for dihydroxyacetone production was increased by using acetonitrile as the reaction medium.![]()
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Affiliation(s)
- Alexander Luis Imbault
- Department of Chemical Engineering and Applied Chemistry, University of Toronto Toronto Ontario M5S 3E5 Canada
| | - Jianyu Gong
- School of Environmental Science and Engineering, Huazhong University of Science and Technology Wuhan China
| | - Ramin Farnood
- Department of Chemical Engineering and Applied Chemistry, University of Toronto Toronto Ontario M5S 3E5 Canada
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25
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Wang Y, Yu J, Wang Y, Chen Z, Dong L, Cai R, Hong M, Long X, Yang S. In situ templating synthesis of mesoporous Ni–Fe electrocatalyst for oxygen evolution reaction. RSC Adv 2020; 10:23321-23330. [PMID: 35520306 PMCID: PMC9059140 DOI: 10.1039/d0ra03111a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 05/26/2020] [Indexed: 01/27/2023] Open
Abstract
Low-cost and efficient electrocatalysts with high dispersion of active sites and high conductivity are of high importance for oxygen evolution reaction (OER). Herein, we use amorphous mesoporous fumed silica (MFS) as a skeleton material to disperse Ni2+ and Fe3+ through a simple impregnation strategy. The MFS is in situ etched away during the OER process in 1 M KOH to prepare a stable mesoporous Ni–Fe electrocatalyst. The high specific surface area and abundant surface silanol groups in the mesoporous fumed silica afford rich anchor sites for fixing metal atoms via strong chemical metal–oxygen interactions. Raman and XPS investigations reveal that Ni2+ formed covalent bonds with surface Si–OH groups, and Fe3+ inserted into the framework of fumed silica forming Fe–O–Si bonds. The mesoporous Ni–Fe catalysts offer high charge transfer abilities in the OER process. When loaded on nickel foam, the optimal 2Ni1Fe-MFS catalyst exhibits an overpotential of 270 mV at 10 mA cm−2 and a Tafel slope of 41 mV dec−1. Notably, 2Ni1Fe-MFS shows a turnover frequency value of 0.155 s−1 at an overpotential of 300 mV, which is 80 and 190 times higher than that of the state-of-the-art IrO2 and RuO2 catalysts. Furthermore, 2Ni1Fe-MFS exhibits 100% faradaic efficiency, large electrochemically active surface area, and good long-term durability, confirming its outstanding OER performance. Such high OER efficiency can be ascribed to the synergistic effect of high surface area, dense metal active sites and interfacial conductive path. This work provides a promising strategy to develop simple, cost-effective, and highly efficient porous Ni–Fe based catalysts for OER. A stable mesoporous Ni–Fe–O electrocatalyst with high OER efficiency is constructed using mesoporous fumed silica as a template.![]()
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Affiliation(s)
- Ya Wang
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Jun Yu
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Yanding Wang
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Zhuwen Chen
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Lei Dong
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Rongming Cai
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Mei Hong
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Xia Long
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
| | - Shihe Yang
- State Key Laboratory of Chemical Oncogenomics
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research
- School of Chemical Biology & Biotechnology
- Peking University Shenzhen Graduate School (PKUSZ)
- Shenzhen 518055
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26
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Fan Z, Liao F, Shi H, Liu Y, Shao M, Kang Z. Highly efficient water splitting over a RuO2/F-doped graphene electrocatalyst with ultra-low ruthenium content. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00095g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A RuO2/F-graphene catalyst with a low Ru content of 6.9 wt% only needs potentials of 1.56 V in alkaline medium and 1.73 V in neutral medium to reach a current density of 10 mA cm−2 for electrocatalytic water splitting.
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Affiliation(s)
- Zhenglong Fan
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
- Soochow University
- Suzhou 215123
- PR China
| | - Fan Liao
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
- Soochow University
- Suzhou 215123
- PR China
| | - Huixian Shi
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
- Soochow University
- Suzhou 215123
- PR China
| | - Yang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
- Soochow University
- Suzhou 215123
- PR China
| | - Mingwang Shao
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
- Soochow University
- Suzhou 215123
- PR China
| | - Zhenhui Kang
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
- Soochow University
- Suzhou 215123
- PR China
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27
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Cai X, Li H, Guo X, Qiu F, Liu R, Zheng X. A facile synthesis of hierarchically porous carbon derived from serum albumin by a generated-templating method for efficient oxygen reduction reaction. RSC Adv 2020; 10:39589-39595. [PMID: 35515409 PMCID: PMC9057421 DOI: 10.1039/d0ra08061f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 10/15/2020] [Indexed: 11/21/2022] Open
Abstract
Hierarchically porous carbons (HPCs), with large specific surface area, abundant porous channels and adequate anchor points, act as one type of ideal carbon supports for the preparation of single-atom electrocatalysts. In this study, the blood plasma-derived HPC with an interconnected porous framework is constructed via a generated-template method, with the formation of ZnS nanoparticles from the abundant disulfide bonds (–S–S–) in serum albumin. After the thermal activation with heme-containing molecules (also from the bovine-blood biowaste), the HPC exhibits high-exposure and low-spin-state Fe(ii)–N4 atomic active sites, and thereby presents a superior oxygen reduction reaction activity (the half wave potential of 0.87 V) and excellent stability (a 4 mV negative shift after 3000 potential cycles), even comparable with the benchmark Pt/C. This work delivers a new insight into the design and synthesis of porous carbons and carbon-based electrocatalysts to develop bio-derived materials in the field of clean energy conversion and storage. A high-performance Fe–N–HPC electrocatalyst derived from bovine blood.![]()
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Affiliation(s)
- Xiaobin Cai
- Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Kunming
- P. R. China
| | - Hanyu Li
- Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Kunming
- P. R. China
| | - Xinliang Guo
- Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Kunming
- P. R. China
| | - Fangcheng Qiu
- Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Kunming
- P. R. China
| | - Ronghai Liu
- Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Kunming
- P. R. China
| | - Xin Zheng
- Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Kunming
- P. R. China
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28
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Liu Y, Zhou Y, Tang Q, Li Q, Chen S, Sun Z, Wang H. A direct Z-scheme Bi2WO6/NH2-UiO-66 nanocomposite as an efficient visible-light-driven photocatalyst for NO removal. RSC Adv 2020; 10:1757-1768. [PMID: 35494666 PMCID: PMC9047168 DOI: 10.1039/c9ra09270f] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/23/2019] [Indexed: 11/21/2022] Open
Abstract
To explore an efficient photocatalyst for NO pollution, a direct Z-scheme photocatalytic system is successfully fabricated by coupling Bi2WO6 with NH2-UiO-66 via a simple hydrothermal synthesis technique. The Z-scheme system promotes the NO photocatalytic oxidation activity with an optimum NO removal rate of 79%, which is 2.7 and 1.2 times that obtained by using only pristine Bi2WO6 and NH2-UiO-66, respectively. Simultaneously, superior selectivity for converting NO to NO3−/NO2− is observed. The enhanced photocatalytic performance of the Bi2WO6/NH2-UiO-66 hybrids is attributed to the following two aspects: (i) large specific area of NH2-UiO-66, which exposes more active sites and is beneficial to the adsorption and activation of NO; (ii) outstanding Z-scheme structure constructed between BiWO6 and NH2-UiO-66, which can improve the efficiency of the separation of electron–hole pairs and preserves the strong oxidation ability of hybrids. ESR analysis shows that ·O2− and ·OH contribute to NO removal. A possible photocatalytic mechanism of NO oxidation on the direct Z-scheme photocatalyst (BWO/2NU) under visible light irradiation is proposed. This work displays the BWO/2NU hybrid's potential for treating low-concentration air pollutants, and the proposed Z-scheme photocatalyst design and promotion mechanism may inspire more rational synthesis of highly efficient photocatalysts for NO removal. To explore an efficient photocatalyst for NO pollution, a direct Z-scheme photocatalytic system is successfully fabricated by coupling Bi2WO6 with NH2-UiO-66 via a simple hydrothermal synthesis technique.![]()
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Affiliation(s)
- Yiqiu Liu
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Yi Zhou
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Qijun Tang
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Qian Li
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Si Chen
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Zhuxing Sun
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Haiqiang Wang
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
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Wu T, Zhang B, Wu Z, Zhang J, Liu H, Yu S, Huang Z, Cai X. Three-dimensional reduced graphene oxide aerogel stabilizes molybdenum trioxide with enhanced photocatalytic activity for dye degradation. RSC Adv 2019; 9:37573-37583. [PMID: 35542264 PMCID: PMC9075745 DOI: 10.1039/c9ra08372c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/13/2019] [Indexed: 11/21/2022] Open
Abstract
By using three-dimensional reduced graphene oxide (rGO) aerogel as a carrier for molybdenum trioxide (MoO3), a series of rGO-MoO3 aerogels were synthesized by a self-assembly process. The results indicated that the as-prepared rGO-MoO3 aerogel had very low density and good mechanical properties, and would not deform under more than 1000 times its own pressure. The rGO-MoO3 aerogel showed more than 90% degradation efficiency for MB within 120 min. After six cycles of recycling, the degradation rate of MB only decreased by 1.6%. As supported by the electron paramagnetic resonance (EPR) measurements, the presence of the rGO aerogel enhanced electron conduction, prolonged carrier lifetime and inhibited electron and hole recombination, thus improving the photocatalytic efficiency of composite aerogel. Besides, the hydroxyl radical (OH˙) and radical anion (˙O2−) played an important role in the photodegradation of the dye. The outstanding adsorption and photocatalytic degradation performance of the rGO-MoO3 aerogel was attributed to its unique physical properties, such as high porosity, simple recycling process, high hydrophobicity, low density and excellent mechanical stability. The findings presented herein indicated that the rGO-MoO3 aerogel had good application potential, and could serve as a promising photocatalyst for the degradation of dyes in wastewater. By using three-dimensional reduced graphene oxide (rGO) aerogel as a carrier for molybdenum trioxide (MoO3), a series of rGO-MoO3 aerogels were synthesized by a self-assembly process.![]()
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Affiliation(s)
- Ting Wu
- Department of Light Chemical Engineering, Guangdong Polytechnic Foshan 528041 P. R. China
| | - Bo Zhang
- School of Metallurgical and Material Engineering, Hunan University of Technology Zhuzhou 412007 P. R. China
| | - Zhimin Wu
- Human Resource Office, Guangdong Polytechnic Foshan 528041 P. R. China
| | - Jinglin Zhang
- Department of Light Chemical Engineering, Guangdong Polytechnic Foshan 528041 P. R. China
| | - Huidi Liu
- Scientific Research Office, Guangdong Polytechnic Foshan 528041 P. R. China
| | - Shaobin Yu
- The No.1 Surgery Department of No.5 People's Hospital of Foshan Foshan 528211 P. R.China
| | - Zhihao Huang
- Department of Light Chemical Engineering, Guangdong Polytechnic Foshan 528041 P. R. China
| | - Xiang Cai
- Department of Light Chemical Engineering, Guangdong Polytechnic Foshan 528041 P. R. China
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Kiai MS, Eroglu O, Kizil H. Polycarboxylate Functionalized Graphene/S Composite Cathodes and Modified Cathode-Facing Side Coated Separators for Advanced Lithium-Sulfur Batteries. NANOSCALE RESEARCH LETTERS 2019; 14:265. [PMID: 31385055 PMCID: PMC6682844 DOI: 10.1186/s11671-019-3099-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/24/2019] [Indexed: 06/10/2023]
Abstract
Sulfur-hosting novel materials as a cathode for lithium-sulfur batteries are in the focus of many research to enhance the specific capacity and cycling stability. Herein, we developed composite cathodes consisting of polycarboxylate functionalized graphene (PC-FGF) doped with TiO2 nanoparticles or poly1,5-diaminoanthraquinone (PDAAQ) and sulfur to enhance chemisorption property toward polysulfides. Additionally, PC-FGF/sulfur composite cathode functions as an efficient trapping site for polysulfides spices as well as contributes to facilitate electron and Li-ions movement toward or from the cathode. In the first experiment, the cell with sulfur incorporated TiO2/PC-FGF cathode is assembled with three different cathode-facing side-coated glass fiber separators. At the second test, PDAAQ/PC-FGF cathode is assembled with the same separator materials as before.The best electrochemical performance observed was sulfur incorporated TiO2/PC-FGF cathode with PDAAQ/PC-FGF-coated separator having a high discharge capacity of 1100 mAh g- 1 at 0.5 C after 100 cycles. It is found that the combination of TiO2/PC-FGF/sulfur cathode and PDAAQ/PC-FCF separator could serve as promising cathode and separator material due to high cycling stability and rate capability for advanced Li-S batteries.
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Affiliation(s)
- Maryam Sadat Kiai
- Nano-Science and Nano-Engineering Program, Graduate School of Science, Engineering and Technology, Istanbul Technical University, 34469, Istanbul, Turkey
| | - Omer Eroglu
- Metallurgical and Materials Engineering Department, Istanbul Technical University, 34469, Istanbul, Turkey
| | - Huseyin Kizil
- Nano-Science and Nano-Engineering Program, Graduate School of Science, Engineering and Technology, Istanbul Technical University, 34469, Istanbul, Turkey.
- Metallurgical and Materials Engineering Department, Istanbul Technical University, 34469, Istanbul, Turkey.
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31
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Fang D, Zhang H, He L, Geng J, Song W, Sun S, Shao Z, Yi B. Facile Synthesis of Nanoporous Pt‐Encapsulated Ir Black as a Bifunctional Oxygen Catalyst via Modified Polyol Process at Room Temperature. ChemElectroChem 2019. [DOI: 10.1002/celc.201900824] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Dahui Fang
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hongjie Zhang
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
| | - Liang He
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiangtao Geng
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
| | - Wei Song
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
| | - Shucheng Sun
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
| | - Zhigang Shao
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
| | - Baolian Yi
- Fuel Cell System and Engineering LaboratoryDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian Liaoning 116023 China
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32
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Chen Q, Wang K, Qin J, Wang S, Wei W, Wang J, Shen Q, Qu P, Liu D. Ru x Se@MoS 2 hybrid as a highly efficient electrocatalyst toward hydrogen evolution reaction. RSC Adv 2019; 9:13486-13493. [PMID: 35519574 PMCID: PMC9063915 DOI: 10.1039/c9ra02873k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 04/25/2019] [Indexed: 11/21/2022] Open
Abstract
Alkaline hydrogen evolution reaction (HER) requires highly efficient and stable catalytic materials, the engineering of which needs overall consideration of the water dissociation process as well as the intermediate hydrogen adsorption process. Herein, a Ru x Se@MoS2 hybrid catalyst was synthesized by the decoration of MoS2 with Ru x Se nanoparticles through a two-step hydrothermal reaction. Due to the bifunctionality mechanism in which Ru promotes the water dissociation and the nearby Se atoms, unsaturated Mo and/or S atoms act as active sites for the intermediate hydrogen adsorption, the hybrid catalyst exhibits an exceptional HER performance in basic media with a rather low overpotential of 45 mV at a current density of 10 mA cm-2 and a small Tafel slope of 42.9 mV dec-1. The synergetic effect between Ru x Se and MoS2 not only enables more catalytically active sites, but also increases the inherent conductivity of the hybrid catalyst, leading to more favorable HER kinetics under both alkaline and acidic conditions. As a result, Ru x Se@MoS2 also demonstrates an enhanced catalytic activity toward HER in 0.5 M H2SO4 in comparison with pure Ru x Se and MoS2, which requires an overpotential of 120 mV to deliver a 10 mA cm-2 current density and gives a Tafel slope of 72.2 mV dec-1. In addition, the hybrid electrocatalyst also exhibits superior electrochemical stability during the long-term HER process in both acidic media and alkaline media.
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Affiliation(s)
- Qi Chen
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 Liaoning China
- Henan Engineering Center of New Energy Battery Materials, Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University Shangqiu 476000 Henan China
| | - Kefeng Wang
- Henan Engineering Center of New Energy Battery Materials, Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University Shangqiu 476000 Henan China
| | - Jingjing Qin
- Henan Engineering Center of New Energy Battery Materials, Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University Shangqiu 476000 Henan China
| | - Songzhu Wang
- Henan Engineering Center of New Energy Battery Materials, Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University Shangqiu 476000 Henan China
| | - Wei Wei
- Henan Engineering Center of New Energy Battery Materials, Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University Shangqiu 476000 Henan China
| | - Jingge Wang
- School of Physics and Engineering, Henan University of Science and Technology Luoyang 471023 China
| | - Qi Shen
- College of Chemistry and Molecular Engineering, Zhengzhou University Zhengzhou 450001 China
| | - Peng Qu
- Henan Engineering Center of New Energy Battery Materials, Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University Shangqiu 476000 Henan China
| | - Daosheng Liu
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University Fushun 113001 Liaoning China
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Mahanta A, Barman K, Jasimuddin S. Electrocatalytic oxidation of water at a polyoxometalate nanoparticle modified gold electrode. RSC Adv 2019; 9:38713-38717. [PMID: 35540240 PMCID: PMC9076066 DOI: 10.1039/c9ra07450c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 11/14/2019] [Indexed: 11/21/2022] Open
Abstract
Polyoxometalate nanoparticles, [H3PMo12O40]NPs, modified gold electrode showed excellent electrocatalytic activity towards water oxidation reaction at an overpotential of 350 mV with a current density of 1.7 mA cm−2 in neutral pH medium.
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Affiliation(s)
| | - Koushik Barman
- Department of Chemistry
- Assam University
- Silchar
- India
- Department of Chemistry
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34
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Hu X, Tian X, Lin YW, Wang Z. Nickel foam and stainless steel mesh as electrocatalysts for hydrogen evolution reaction, oxygen evolution reaction and overall water splitting in alkaline media. RSC Adv 2019; 9:31563-31571. [PMID: 35527931 PMCID: PMC9072957 DOI: 10.1039/c9ra07258f] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 09/18/2019] [Indexed: 12/15/2022] Open
Abstract
In this work, several commonly used conductive substrates as electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under alkaline conditions were studied, including nickel foam (Ni foam), copper foam (Cu foam), nickel mesh (Ni mesh) and stainless steel mesh (SS mesh). Ni foam and SS mesh are demonstrated as high-performance and stable electrocatalysts for HER and OER, respectively. For HER, Ni foam exhibited an overpotential of 0.217 V at a current density of 10 mA cm−2 with a Tafel slope of 130 mV dec−1, which were larger than that of the commercial Pt/C catalyst, but smaller than that of the other conductive substrates. Meanwhile, the SS mesh showed the best electrocatalytic performance for OER with an overpotential of 0.277 V at a current density of 10 mA cm−2 and a Tafel slope of 51 mV dec−1. Its electrocatalytic performance not only exceeded those of the other conductive substrates but also the commercial RuO2 catalyst. Moreover, both Ni foam and SS mesh exhibited high stability during HER and OER, respectively. Furthermore, in the two-electrode system with Ni foam used as the cathode and SS mesh used as the anode, they enable a current density of 10 mA cm−2 at a small cell voltage of 1.74 V. This value is comparable to or exceeding the values of previously reported electrocatalysts for overall water splitting. In addition, NiO on the surface of Ni foam may be the real active species for HER, NiO and FeOx on the surface of SS mesh may be the active species for OER. The abundant and commercial availability, long-term stability and low-cost property of nickel foam and stainless steel mesh enable their large-scale practical application in water splitting. Efficient electrocatalytic overall water splitting is achieved with commercially-available and low-cost nickel foam and stainless steel mesh as cathode and anode electrodes.![]()
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Affiliation(s)
- Xiaoyan Hu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- P. R. China
| | - Xuemei Tian
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- P. R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang 421001
- P. R. China
| | - Zhonghua Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- P. R. China
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35
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Yang Q, Dai Y, Huang Z, Zhang J, Zeng M, Shi C. Synthesis of Bi2WO6/Na-bentonite composites for photocatalytic oxidation of arsenic(iii) under simulated sunlight. RSC Adv 2019; 9:29689-29698. [PMID: 35531526 PMCID: PMC9071977 DOI: 10.1039/c9ra06181a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 12/09/2019] [Accepted: 09/13/2019] [Indexed: 11/24/2022] Open
Abstract
Novel Bi2WO6/bentonite (denoted as BWO/BENT) composites were prepared via a typical hydrothermal process and employed for the photocatalytic oxidation of arsenic(iii) (As(iii)). The properties of the prepared samples were characterized through X-ray diffraction, transmission and scanning electron microscopy, UV-visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. Effects of the BENT ratio on the As(iii) removal were explored under simulated sunlight, and the best photocatalytic effect was observed for the composite with BWO : BENT = 7 : 3 w/w. Compared with the pure BWO, the BWO/BENT composites exhibited an improved photocatalytic ability in the removal of As(iii), which was mainly ascribed to the enlarged specific surface area and the suppressed electron–hole recombination by the incorporated BENT. Furthermore, photo-generated holes (h+) and superoxide radicals ·O2− were confirmed to be the major contributors to the oxidation of As(iii), and an associated mechanism of photocatalytic oxidation of As(iii) over BWO/BENT composites was proposed. Novel Bi2WO6/bentonite (denoted as BWO/BENT) composites were prepared via a typical hydrothermal process and employed for the photocatalytic oxidation of arsenic(iii) (As(iii)).![]()
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Affiliation(s)
- Quancheng Yang
- School of Chemical and Environmental Engineering
- China University of Mining and Technology
- Beijing 100083
- P. R. China
- Key Laboratory of Environmental Nano-Technology and Health Effect
| | - Yunxiang Dai
- School of Chemical and Environmental Engineering
- China University of Mining and Technology
- Beijing 100083
- P. R. China
- Key Laboratory of Environmental Nano-Technology and Health Effect
| | - Zijian Huang
- School of Chemical and Environmental Engineering
- China University of Mining and Technology
- Beijing 100083
- P. R. China
- Key Laboratory of Environmental Nano-Technology and Health Effect
| | - Jing Zhang
- Key Laboratory of Environmental Nano-Technology and Health Effect
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- P. R. China
| | - Ming Zeng
- School of Chemical and Environmental Engineering
- China University of Mining and Technology
- Beijing 100083
- P. R. China
| | - Changsheng Shi
- Department of Environmental Engineering
- North China Institute of Science and Technology
- Beijing 101601
- P. R. China
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N. S, L. S, Adarakatti PS, Hughes JP, Rowley-Neale SJ, Banks CE, S. A. In situ addition of graphitic carbon into a NiCo2O4/CoO composite: enhanced catalysis toward the oxygen evolution reaction. RSC Adv 2019; 9:24995-25002. [PMID: 35528657 PMCID: PMC9069886 DOI: 10.1039/c9ra05195c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 08/04/2019] [Indexed: 12/13/2022] Open
Abstract
A facile synthesis technique for the production of NiCo2O4/CoO and graphite composites that demonstrate efficient electrocatalysis towards the oxygen evolution reaction.
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Affiliation(s)
- Srinivasa N.
- Department of Chemistry
- School of Engineering
- Dayananda Sagar University
- Bangalore
- India
| | - Shreenivasa L.
- Department of Chemistry
- School of Engineering
- Dayananda Sagar University
- Bangalore
- India
| | | | - Jack P. Hughes
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester M1 5GD
- UK
- Manchester Fuel Cell Innovation Centre
| | - Samuel J. Rowley-Neale
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester M1 5GD
- UK
- Manchester Fuel Cell Innovation Centre
| | - Craig E. Banks
- Faculty of Science and Engineering
- Manchester Metropolitan University
- Manchester M1 5GD
- UK
- Manchester Fuel Cell Innovation Centre
| | - Ashoka S.
- Department of Chemistry
- School of Engineering
- Dayananda Sagar University
- Bangalore
- India
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37
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Fu C, Liu X, Wang Y, Li L, Zhang Z. Preparation and characterization of Fe3O4@SiO2@TiO2–Co/rGO magnetic visible light photocatalyst for water treatment. RSC Adv 2019; 9:20256-20265. [PMID: 35514700 PMCID: PMC9065454 DOI: 10.1039/c9ra04002a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 06/19/2019] [Indexed: 11/21/2022] Open
Abstract
With its low cost, high photocatalytic activity, high chemical stability and easy magnetic separation, Fe3O4@SiO2@TiO2–Co/rGO magnetic photocatalyst has a good application potential.
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Affiliation(s)
- Congzhi Fu
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Xijun Liu
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Yuwei Wang
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Li Li
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
| | - Zihao Zhang
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
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38
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Jiang X, Yan Z, Zhang J, Gao J, Huang W, Shi Q, Zhang H. Mesoporous hollow black TiO2 with controlled lattice disorder degrees for highly efficient visible-light-driven photocatalysis. RSC Adv 2019; 9:36907-36914. [PMID: 35539040 PMCID: PMC9075178 DOI: 10.1039/c9ra08148h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 10/29/2019] [Indexed: 01/02/2023] Open
Abstract
Black TiO2 has received tremendous attention because of its lattice disorder-induced reduction in the TiO2 bandgap, which yields excellent light absorption and photocatalytic ability. In this report, a highly efficient visible-light-driven black TiO2 photocatalyst was synthesized with a mesoporous hollow shell structure. It provided a higher specific surface area, more reaction sites and enhanced visible light absorption capability, which significantly promoted the photocatalytic reaction. Subsequently, the mesoporous hollow black TiO2 with different lattice disorder-engineering degrees were designed. The structure disorder in the black TiO2 obviously increased with reduction temperature, leading to improved visible light absorption. However, their visible-light-driven photocatalytic efficiency increased first and then decreased. The highest value can be observed for the sample reduced at 350 °C, which was 2-, 1.4- and 5-fold that of the samples reduced at 320 °C, 380 °C and 400 °C, respectively. This contradiction can be ascribed to the varied functions of the surface defects with different concentrations in the black TiO2 during the catalytic process. In particular, the defects at low concentrations boost photocatalysis but reverse photocatalysis at high concentrations when they act as charge recombination centers. This study provides significant insight for the fabrication of high-efficiency visible-light-driven catalytic black TiO2 and the understanding of its catalysis mechanism. Our work provides significant insights into the design of hollow black TiO2 spheres and the mechanism accounting for their high-efficient visible-light-driven catalysis.![]()
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Affiliation(s)
- Xiongrui Jiang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zhiyao Yan
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jing Zhang
- College of Architecture and Environment
- Sichuan University
- Chengdu 610065
- China
| | - Junzheng Gao
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Wanxia Huang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Qiwu Shi
- College of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hengzhong Zhang
- Center for High Pressure Science and Technology Advance Research
- Shanghai 201203
- China
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Aligholivand M, Shaghaghi Z, Bikas R, Kozakiewicz A. Electrocatalytic water oxidation by a Ni(ii) salophen-type complex. RSC Adv 2019; 9:40424-40436. [PMID: 35542637 PMCID: PMC9076273 DOI: 10.1039/c9ra08585h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 11/28/2019] [Indexed: 01/17/2023] Open
Abstract
A new mononuclear Ni(ii) complex, NiL (1), was synthesized from the reaction of Ni(OAc)2·4H2O and salophen-type N2O2-donor ligand, H2L (where H2L = 2,2′-((1E,1′E)-((4-chloro-5-methyl-1,2-phenylene)bis(azanylylidene))bis(methanylylidene))diphenol), in ethanol. The obtained complex was characterized by elemental analysis, spectroscopic techniques and single crystal X-ray analysis. The complex was studied as a water oxidizing catalyst and its electrocatalytic activity in the water oxidation reaction was tested in 0.5 M of borate buffer at pH = 3, 7 and 11 in a typical three-electrode setup with a carbon paste electrode modified by complex 1 as a working electrode. The linear sweep voltammetry (LSV) curves indicated that complex 1 has a much superior activity and only needs 21 mV vs. Ag/AgCl overvoltage to reach a geometrical catalytic current density of 2.0 mA cm−2 at pH = 11. The onset potential decreased from 1.15 V to 0.67 V vs. Ag/AgCl with an increase of pH from 3 to 13 under a constant current density of 1.0 mA cm−2. Then, to determine the true catalyst for the water oxidation reaction in the presence of complex 1 at pH = 3, 7 and 11, cyclic voltammetry was also performed. The continuous CVs for complex 1 at neutral and alkaline solutions showed significant progress for the water oxidation reaction. In addition, the amperometry tests exhibited excellent stability and high constant current density for water oxidation by CPE-complex 1 under electrochemical conditions at pH = 11 and 7. Although X-ray powder diffraction analysis did not show a pure and crystalline structure for NiOx, the scanning electron microscopy images showed that nickel oxide at pH = 11 and nickel oxide or other Ni-based compounds at pH = 7 are true water oxidizing catalysts on the surface of a CPE electrode. Moreover at pH = 3, no clear water oxidation or NiOx formation was observed. One new Ni-salophen type complex was designed as a water oxidation electrocatalyst in neutral and basic solutions.![]()
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Affiliation(s)
- Mehri Aligholivand
- Coordination Chemistry Research Laboratory
- Department of Chemistry
- Faculty of Science
- Azarbaijan Shahid Madani University
- Tabriz
| | - Zohreh Shaghaghi
- Coordination Chemistry Research Laboratory
- Department of Chemistry
- Faculty of Science
- Azarbaijan Shahid Madani University
- Tabriz
| | - Rahman Bikas
- Department of Chemistry
- Faculty of Science
- Imam Khomeini International University
- Qazvin
- Iran
| | - Anna Kozakiewicz
- Department of Biomedical and Polymer Chemistry
- Faculty of Chemistry
- Nicolaus Copernicus University in Torun
- 87-100 Torun
- Poland
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Umar M, Mahmood N, Awan SU, Fatima S, Mahmood A, Rizwan S. Rationally designed La and Se co-doped bismuth ferrites with controlled bandgap for visible light photocatalysis. RSC Adv 2019; 9:17148-17156. [PMID: 35519847 PMCID: PMC9064475 DOI: 10.1039/c9ra03064f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 05/08/2019] [Indexed: 11/21/2022] Open
Abstract
Development of efficient visible light photocatalysts for water purification and hydrogen production by water splitting has been quite challenging. The activities of visible light photocatalysts are generally controlled by the extent of absorption of incident light, band gap, exposure of catalyst surface to incident light and adsorbing species. Here, we have synthesized nanostructured, La and Se co-doped bismuth ferrite (BLFSO) nanosheets using double solvent sol–gel and co-precipitation methods. Structural analysis revealed that the La and Se co-doped BFO i.e. Bi0.92La0.08Fe1−xSexO3 (BLFSO) transformed from perovskite rhombohedral to orthorhombic phase. As a result of co-doping and phase transition, a significant decrease in the band gap from 2.04 eV to 1.76 eV was observed for BLFSO-50% (having Se doping of 50%) which requires less energy during transfer of electrons from the valence to the conduction band and ultimately enhances the photocatalytic activity. Moreover, upon increase in Se doping, the BLFSO morphology gradually changed from particles to nanosheets. Among various products, BLFSO-50% exhibited the highest photocatalytic activities under visible light owing to homogenous phase distribution, regular sheet type morphology and larger contact with dye containing solutions. In summary, La, Se co-doping is an effective approach to tune the electronic structure of photocatalysts for visible light photocatalysis. Development of efficient visible light photocatalysts for water purification and hydrogen production by water splitting has been quite challenging.![]()
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Affiliation(s)
- M. Umar
- Physics Characterization and Simulations Lab (PCSL)
- School of Natural Sciences (SNS)
- National University of Science and Technology (NUST)
- Islamabad 44000
- Pakistan
| | - Nasir Mahmood
- School of Electrical and Computer Engineering
- RMIT University
- 3001 Melbourne
- Australia
| | - Saif Ullah Awan
- Department of Electrical Engineering
- NUST College of Electrical and Mechanical Engineering
- National University of Sciences and Technology (NUST)
- Islamabad 44000
- Pakistan
| | - Sabeen Fatima
- Physics Characterization and Simulations Lab (PCSL)
- School of Natural Sciences (SNS)
- National University of Science and Technology (NUST)
- Islamabad 44000
- Pakistan
| | - Asif Mahmood
- School of Chemical and Biomolecular Engineering
- The University of Sydney
- Sydney
- Australia
| | - Syed Rizwan
- Physics Characterization and Simulations Lab (PCSL)
- School of Natural Sciences (SNS)
- National University of Science and Technology (NUST)
- Islamabad 44000
- Pakistan
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Di X, Guo F, Zhu Z, Xu Z, Qian Z, Zhang Q. In situ synthesis of ZnO–GO/CGH composites for visible light photocatalytic degradation of methylene blue. RSC Adv 2019; 9:41209-41217. [PMID: 35540050 PMCID: PMC9076400 DOI: 10.1039/c9ra09260a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/09/2019] [Indexed: 11/21/2022] Open
Abstract
A novel ZnO–GO/CGH composite was prepared using an in situ synthesis process for photodegradation of methylene blue under visible light illumination. The chitin–graphene composite hydrogel (CGH) was used to provide uniform binding of the nano ZnO–GO composite to the hydrogel surface and prevent their agglomeration. GO provides multi-dimensional protons and electron transport channels for ZnO with a flower-like structure, which possessed improved photo-catalytic activity. SEM analysis indicates that the hydrogel has good adsorption properties with rougher surfaces and porous microstructure, which enables it to adsorb the dyes effectively. Under synergetic enhancement of adsorption and photo-catalysis, catalytic activity and nano ZnO–GO/CGH recycling improved greatly. Synthesized nano ZnO–GO/CGH showed high dye removal efficiency of 99%, about 2.2 times that of the pure chitin gel under the same condition. This suggests the potential application of the new photocatalytic composites to remove organic dyes from wastewater. A novel ZnO–GO/CGH composite was prepared using an in situ synthesis process for photodegradation of methylene blue under visible light illumination.![]()
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Affiliation(s)
- Xiaoxuan Di
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Feng Guo
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Zihan Zhu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Zhonghao Xu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Ziqi Qian
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
| | - Qian Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education)
- School of Ocean Science and Technology
- Dalian University of Technology
- Panjin 124221
- China
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Qin S, Lei J, Xiong Y, Xu X, Geng X, Wang J. Synthesis of Ni4.5Fe4.5S8/Ni3S2 film on Ni3Fe alloy foam as an excellent electrocatalyst for the oxygen evolution reaction. RSC Adv 2019; 9:10231-10236. [PMID: 35520944 PMCID: PMC9062387 DOI: 10.1039/c9ra00724e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 03/14/2019] [Indexed: 01/27/2023] Open
Abstract
Directly synthesizing bicomponent electrocatalysts in the nanostructured form from bulk alloy foam has many potential advantages: robust stability, synergistic effects and fast electron transfer. Here, Ni4.5Fe4.5S8/Ni3S2 film with micrometer thickness on bulk substrate was synthesized by a simple one-step hydrothermally assisted sulfurization of Ni3Fe alloy foam for the oxygen evolution reaction (OER) in basic media. Benefiting from the synergetic effect of the bicomponent, reduced interfacial resistance between electrocatalyst and metal substrate, and more exposed catalytic sites on the microstructured film, the as-prepared electrocatalyst (Ni4.5Fe4.5S8/Ni3S2‖Ni3Fe) behaves as a highly efficient and robust oxygen evolution electrode with felicitous current density in alkaline electrolytes (1 M KOH). It requires an overpotential of only 264 mV to drive 100 mA cm−2 with its catalytic activity being maintained for at least 20 h in 1 M KOH. In the near future, this kind of synthesis strategy can be easily extended to investigate many electrocatalysts derived from 3D alloyed foam with various ratios of the different components, opening new avenue for understanding the relationship between material properties and electrochemical performance. Ni4.5Fe4.5S8/Ni3S2‖Ni3Fe composite materials show excellent OER electrocatalytic performance in alkaline solutions.![]()
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Affiliation(s)
- Shili Qin
- Department of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006
- P. R. China
| | - Jinlong Lei
- Department of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006
- P. R. China
| | - Yun Xiong
- Wuhan Economic and Technological Development Zone
- Wuhan HydraV Fuel Cell Tech. Co., Ltd
- Wuhan 430056
- P. R. China
| | - Xiaohu Xu
- Key Laboratory of Spectral Measurement and Analysis of Shanxi Province
- Shanxi Normal University
- Linfen 041004
- P.R. China
| | - Xinhua Geng
- Department of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006
- P. R. China
| | - Jiahai Wang
- Department of Chemistry and Chemical Engineering
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology
- Guangzhou University
- Guangzhou 510006
- P. R. China
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Hou C, Xie J, Yang H, Chen S, Liu H. Preparation of Cu2O@TiOF2/TiO2and its photocatalytic degradation of tetracycline hydrochloride wastewater. RSC Adv 2019; 9:37911-37918. [PMID: 35541816 PMCID: PMC9075813 DOI: 10.1039/c9ra07999h] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/07/2019] [Indexed: 12/07/2022] Open
Abstract
Cu2O@TiOF2/TiO2composites with large surfaces were prepared by a hydrothermal method and exhibited excellent activity under simulated solar light, showing high efficiency for tetracycline hydrochloride photocatalytic degradation, and reusability.
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Affiliation(s)
- Chentao Hou
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- People's Republic of China
| | - Jianqiong Xie
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- People's Republic of China
| | - Haolan Yang
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- People's Republic of China
| | - Shumin Chen
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- People's Republic of China
| | - Hualin Liu
- College of Geology and Environment
- Xi'an University of Science and Technology
- Xi'an 710054
- People's Republic of China
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