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Wang Y, Wang Y, Hu B, Qiu M, Gao G, Wei P. Catalyst-free contact-electro-catalytic H 2O 2 synthesis via simple combination of a poly(tetrafluoroethylene) stir bar and ultrasound. Chem Commun (Camb) 2024. [PMID: 38913438 DOI: 10.1039/d4cc01576b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Herein, we present a catalyst-free contact-electro-catalytic method for synthesizing hydrogen peroxide (H2O2) by combining continuous agitation with a poly(tetrafluoroethylene) (PTFE) stir bar and ultrasonication. A high H2O2 production rate of 256.6 μM h-1 is achieved under ambient conditions without adding particle catalysts and sacrificial agents, which is competitive with recent advancements in redox technology. Eco-friendliness, convenience and efficiency make this process a promising alternative method for H2O2 synthesis.
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Affiliation(s)
- Yao Wang
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China.
| | - Yanfeng Wang
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China.
- Department of Environmental Science, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
| | - Baowei Hu
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China.
| | - Muqing Qiu
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China.
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Peiyun Wei
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China.
- Department of Environmental Science, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China
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2
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Deng M, Wang D, Li Y. General Design Concept of High-Performance Single-Atom-Site Catalysts for H 2O 2 Electrosynthesis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2314340. [PMID: 38439595 DOI: 10.1002/adma.202314340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/25/2024] [Indexed: 03/06/2024]
Abstract
Hydrogen peroxide (H2O2) as a green oxidizing agent is widely used in various fields. Electrosynthesis of H2O2 has gradually become a hotspot due to its convenient and environment-friendly features. Single-atom-site catalysts (SASCs) with uniform active sites are the ideal catalysts for the in-depth study of the reaction mechanism and structure-performance relationship. In this review, the outstanding achievements of SASCs in the electrosynthesis of H2O2 through 2e- oxygen reduction reaction (ORR) and 2e- water oxygen reaction (WOR) in recent years, are summarized. First, the elementary steps of the two pathways and the roles of key intermediates (*OOH and *OH) in the reactions are systematically discussed. Next, the influence of the size effect, electronic structure regulation, the support/interfacial effect, the optimization of coordination microenvironments, and the SASCs-derived catalysts applied in 2e- ORR are systematically analyzed. Besides, the developments of SASCs in 2e- WOR are also overviewed. Finally, the research progress of H2O2 electrosynthesis on SASCs is concluded, and an outlook on the rational design of SASCs is presented in conjunction with the design strategies and characterization techniques.
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Affiliation(s)
- Mingyang Deng
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
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3
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Wang T, Li W, Wu G. Bioinspired Tetranuclear Manganese Cubane Complex as an Efficient Molecular Electrocatalyst for Two-Electron Water Oxidation Towards Hydrogen Peroxide. Angew Chem Int Ed Engl 2024:e202406701. [PMID: 38740950 DOI: 10.1002/anie.202406701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 05/16/2024]
Abstract
Stable homogeneous two-electron water oxidation electrocatalysts are highly demanded to understand the precise mechanism and reaction intermediates of electrochemical H2O2 production. Here we report a tetranuclear manganese complex with a cubane structure which can electrocatalyze water oxidation to hydrogen peroxide under alkaline and neutral conditions. Such a complex demonstrates an optimal Faradaic efficiency (FE) of 87 %, which is amongst (if not) the highest FE(H2O2) of reported homogeneous and heterogeneous electrocatalysts. In addition, active species were identified and co-catalysts were excluded through ESI-MS characterization. Furthermore, we identified water binding sites and isolated one-electron oxidation intermediate by chemical oxidation of the catalyst in the presence of water substrates. It is evident that efficient proton-accepting electrolytes avoid rapid proton building-up at electrode and substantially improve reaction rate and selectivity. Accordingly, we propose a two-electron catalytic cycle model for water oxidation to hydrogen peroxide with the bioinspired molecular electrocatalyst. The present work is expected to provide an ideal platform to elucidate the two-electron WOR mechanism at the atomic level.
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Affiliation(s)
- Tongshuai Wang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Wenxiu Li
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Gang Wu
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
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4
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Bemana H, Kornienko N. Combined electrochemical and spectroscopic investigations of carbonate-mediated water oxidation to peroxide. iScience 2024; 27:109482. [PMID: 38558937 PMCID: PMC10981096 DOI: 10.1016/j.isci.2024.109482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/03/2024] [Accepted: 03/08/2024] [Indexed: 04/04/2024] Open
Abstract
The development of electrosynthetic technologies for H2O2 production is appealing from a sustainability perspective. The use of carbonate species as mediators in water oxidation to peroxide has emerged as a viable route to do so but still many questions remain about the mechanism that must be addressed. To this end, this work combines electrochemical and spectroscopic methods to investigate reaction pathways and factors influencing the efficiency of this reaction. Our results indicate that CO32- is the key species that undergoes electrochemical oxidation, prior to reacting with water away from the catalyst. Through spectroelectrochemical experiments, we noted that CO32- depletion is a factor that limits the selectivity of the process. In turn, we showed how the application of pulsed electrolysis can augment this, with an initial set of optimized parameters increasing the selectivity from 20% to 27%. In all, this work helps pave the way for future development of practical H2O2 electrosynthetic systems.
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Affiliation(s)
- Hossein Bemana
- Department of Chemistry, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
- Institute of Inorganic Chemistry, University of Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Nikolay Kornienko
- Department of Chemistry, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
- Institute of Inorganic Chemistry, University of Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
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5
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Chen CH, Liu SB, Chang SP. Performance Improvement of a ZnGa 2O 4 Extended-Gate Field-Effect Transistor pH Sensor. ACS OMEGA 2024; 9:15304-15310. [PMID: 38585084 PMCID: PMC10993268 DOI: 10.1021/acsomega.3c09965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/03/2024] [Accepted: 03/06/2024] [Indexed: 04/09/2024]
Abstract
ZnGa2O4 sensing films were prepared using an RF magnetron sputtering system and connected to a commercial metal oxide semiconductor field-effect transistor (MOSFET) as the extended-gate field-effect transistor (EGFET) to detect pH values. Experimental parameters were adjusted by varying the oxygen flow rate in the process chamber to produce ZnGa2O4 sensing films with different oxygen ratios. These films were then treated in a furnace tube at an annealing temperature of 700 °C. The sensitivity and linearity of the constant current mode and the constant voltage mode were measured and analyzed in the pH range of 2-12. Under the deposition conditions with an oxygen ratio of 6%, the sensitivity reached 23.14 mV/pH and 33.49 μA/pH, with corresponding linearity values of 92.1 and 96.15%, respectively. Finally, the sensing performance of the ZnGa2O4 EGFET pH sensor with and without annealing processes was analyzed and compared.
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Affiliation(s)
- Chia-Hsun Chen
- Institute
of Electro-Optical and Material Science, National Formosa University, Yunlin 632301, Taiwan
| | - Shu-Bai Liu
- Department
of Electronic Engineering, National Kaohsiung
University of Science and Technology, Kaohsiung City 80778, Taiwan
| | - Sheng-Po Chang
- Department
of Microelectronics Engineering, National
Kaohsiung University of Science and Technology, Kaohsiung City 88157, Taiwan
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Magdaleno AL, Cerrón-Calle GA, Dos Santos AJ, Lanza MRV, Apul OG, Garcia-Segura S. Unlocking the Potential of Nanobubbles: Achieving Exceptional Gas Efficiency in Electrogeneration of Hydrogen Peroxide. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304547. [PMID: 37621039 DOI: 10.1002/smll.202304547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/22/2023] [Indexed: 08/26/2023]
Abstract
The electrogeneration of hydrogen peroxide (H2 O2 ) via the oxygen reduction reaction is a crucial process for advanced water treatment technologies. While significant effort is being devoted to developing highly reactive materials, gas provision systems used in these processes are receiving less attention. Here, using oxygen nanobubbles to improve the gas efficiency of the electrogeneration of H2 O2 is proposed. Aeration with nanobubbles is compared to aeration with macrobubbles under an identical experimental set-up, with nanobubbles showing a much higher gas-liquid volumetric mass transfer coefficient (KL a) of 2.6 × 10-2 min-1 compared to 2.7 × 10-4 min-1 for macrobubbles. Consequently, nanobubbles exhibit a much higher gas efficiency using 60% of O2 delivered to the system compared to 0.19% for macrobubbles. Further, it is observed that the electrogeneration of H2 O2 using carbon felt electrodes is enhanced using nanobubbles. Under the same dissolved oxygen levels, nanobubbles boost the reaction yield to 84%, while macrobubbles yield only 53.8%. To the authors' knowledge, this is the first study to investigate the use of nanobubbles in electrochemical reactions and demonstrate their ability to enhance gas efficiency and electrocatalytic response. These findings have important implications for developing more efficient chemical and electrochemical processes operating under gas-starving systems.
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Affiliation(s)
- Andre L Magdaleno
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, 85287-3005, USA
| | - Gabriel A Cerrón-Calle
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, 85287-3005, USA
| | - Alexsandro J Dos Santos
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, 85287-3005, USA
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, São Paulo, 13566-590, Brazil
| | - Marcos R V Lanza
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, São Paulo, 13566-590, Brazil
| | - Onur G Apul
- Department of Civil and Environmental Engineering, University of Maine, Orono, ME, 04469, USA
| | - Sergi Garcia-Segura
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, 85287-3005, USA
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7
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Kuttassery F, Ohsaki Y, Thomas A, Kamata R, Ebato Y, Kumagai H, Nakazato R, Sebastian A, Mathew S, Tachibana H, Ishitani O, Inoue H. A Molecular Z-Scheme Artificial Photosynthetic System Under the Bias-Free Condition for CO 2 Reduction Coupled with Two-electron Water Oxidation: Photocatalytic Production of CO/HCOOH and H 2 O 2. Angew Chem Int Ed Engl 2023; 62:e202308956. [PMID: 37493175 DOI: 10.1002/anie.202308956] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 07/27/2023]
Abstract
Bio-inspired molecular-engineered systems have been extensively investigated for the half-reactions of H2 O oxidation or CO2 reduction with sacrificial electron donors/acceptors. However, there has yet to be reported a device for dye-sensitized molecular photoanodes coupled with molecular photocathodes in an aqueous solution without the use of sacrificial reagents. Herein, we will report the integration of SnIV - or AlIII -tetrapyridylporphyrin (SnTPyP or AlTPyP) decorated tin oxide particles (SnTPyP/SnO2 or AlTPyP/SnO2 ) photoanode with the dye-sensitized molecular photocathode on nickel oxide particles containing [Ru(diimine)3 ]2+ as the light-harvesting unit and [Ru(diimine)(CO)2 Cl2 ] as the catalyst unit covalently connected and fixed within poly-pyrrole layer (RuCAT-RuC2 -PolyPyr-PRu/NiO). The simultaneous irradiation of the two photoelectrodes with visible light resulted in H2 O2 on the anode and CO, HCOOH, and H2 on the cathode with high Faradaic efficiencies in purely aqueous conditions without any applied bias is the first example of artificial photosynthesis with only two-electron redox reactions.
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Affiliation(s)
| | - Yutaka Ohsaki
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Arun Thomas
- Department of Chemistry, St. Stephen's College, Uzhavoor, Kerala, 686634, India
| | - Ryutaro Kamata
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro, Tokyo, 152-8550, Japan
| | - Yosuke Ebato
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro, Tokyo, 152-8550, Japan
| | - Hiromu Kumagai
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo, 153-8904, Japan
| | - Ryosuke Nakazato
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Abin Sebastian
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Siby Mathew
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Hiroshi Tachibana
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Osamu Ishitani
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro, Tokyo, 152-8550, Japan
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Haruo Inoue
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo, 192-0397, Japan
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