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Islam F, Ahsan M, Islam N, Hossain MI, Bahadur NM, Aziz A, Al-Humaidi JY, Rahman MM, Maiyalagan T, Hasnat MA. Recent Advancements in Ascribing Several Platinum Free Electrocatalysts Pertinent to Hydrogen Evolution from Water Reduction. Chem Asian J 2024:e202400220. [PMID: 38654594 DOI: 10.1002/asia.202400220] [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: 02/29/2024] [Revised: 04/16/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
The advancement of a sustainable and scalable catalyst for hydrogen production is crucial for the future of the hydrogen economy. Electrochemical water splitting stands out as a promising pathway for sustainable hydrogen production. However, the development of Pt-free electrocatalysts that match the energy efficiency of Pt while remaining economical poses a significant challenge. This review addresses this challenge by highlighting latest breakthroughs in Pt-free catalysts for the hydrogen evolution reaction (HER). Specifically, we delve into the catalytic performance of various transition metal phosphides, metal carbides, metal sulphides, and metal nitrides toward HER. Our discussion emphasizes strategies for enhancing catalytic performance and explores the relationship between structural composition and the performance of different electrocatalysts. Through this comprehensive review, we aim to provide insights into the ongoing efforts to overcome barriers to scalable hydrogen production and pave the way for a sustainable hydrogen economy.
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Affiliation(s)
- Fahamidul Islam
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
- Department of Chemistry, Faculty of Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Mohebul Ahsan
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
- Division of Chemistry, Department of Science and Humanities, Military Institute of Science and Technology, Mirpur Cantonment-, 1216, Dhaka, Bangladesh
| | - Nurnobi Islam
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Mohammad Imran Hossain
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
| | - Newaz Mohammed Bahadur
- Department of Chemistry, Faculty of Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - Abdul Aziz
- Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management (IRC-HTCM), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - Jehan Y Al-Humaidi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. BOX 84428, Riyadh, 11671, Saudi Arabia
| | - Mohammed M Rahman
- Center of Excellence for Advanced Materials Research (CEAMR) & Chemistry department, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - T Maiyalagan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamilnadu, India
| | - Mohammad A Hasnat
- Electrochemistry & Catalysis Research Laboratory (ECRL), Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh
- International Research Organization for Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
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2
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Garcia‐Esparza AT, Qureshi M, Skoien D, Hersbach TJP, Sokaras D. A multimodal flow reactor for photocatalysis under atmospheric conditions. J Chem Phys 2023; 159:244201. [PMID: 38153150 PMCID: PMC10756709 DOI: 10.1063/5.0179259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 12/05/2023] [Indexed: 12/29/2023] Open
Abstract
Photocatalysis is a promising concept for the direct conversion of solar energy into fuels and chemicals. The design, experimental protocol, and performance of a multimodal and versatile flow reactor for the characterization of powdered and immobilized photocatalysts are herein presented. Ultimately, this instrument enables rigorous evaluation of photocatalysis performance metrics. The apparatus quantifies transient gas-phase reaction products via online real-time gas analyzer mass spectrometry (RTGA-MS). For H2, the most challenging gas, the photocatalytic system's RTGA-MS gas detection sensitivity spans over three orders of magnitude and can detect down to tens of parts per million under atmospheric conditions. Using Pt nanoparticles supported on anatase TiO2 photocatalyst via wet impregnation, the instrument's capability for the characterization of photocatalytic H2 evolution is demonstrated, resulting in an apparent quantum yield (AQY) of 48.1% ± 0.9% at 320 nm, 45.7% ± 0.3% at 340 nm and 31% ± 1% at 360 nm. The photodeposition of Pt on anatase TiO2 was employed to demonstrate the instrument's capability to track the transient behavior of photocatalysts, resulting in an improved 55% ± 2% AQY for H2 evolution at 340 nm from aqueous methanol. This photocatalytic instrument enables systematic study of a wide variety of photocatalytic reactions such as water splitting and CO2 reduction to valuable C2+ fuels and chemicals.
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Affiliation(s)
- Angel T. Garcia‐Esparza
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Muhammad Qureshi
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Dean Skoien
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Thomas J. P. Hersbach
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Dimosthenis Sokaras
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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3
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Zhong G, Cheng T, Shah AH, Wan C, Huang Z, Wang S, Leng T, Huang Y, Goddard WA, Duan X. Determining the hydronium pK[Formula: see text] at platinum surfaces and the effect on pH-dependent hydrogen evolution reaction kinetics. Proc Natl Acad Sci U S A 2022; 119:e2208187119. [PMID: 36122216 PMCID: PMC9522355 DOI: 10.1073/pnas.2208187119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 08/15/2022] [Indexed: 11/18/2022] Open
Abstract
Electrocatalytic hydrogen evolution reaction (HER) is critical for green hydrogen generation and exhibits distinct pH-dependent kinetics that have been elusive to understand. A molecular-level understanding of the electrochemical interfaces is essential for developing more efficient electrochemical processes. Here we exploit an exclusively surface-specific electrical transport spectroscopy (ETS) approach to probe the Pt-surface water protonation status and experimentally determine the surface hydronium pKa [Formula: see text] 4.3. Quantum mechanics (QM) and reactive dynamics using a reactive force field (ReaxFF) molecular dynamics (RMD) calculations confirm the enrichment of hydroniums (H3O[Formula: see text]) near Pt surface and predict a surface hydronium pKa of 2.5 to 4.4, corroborating the experimental results. Importantly, the observed Pt-surface hydronium pKa correlates well with the pH-dependent HER kinetics, with the protonated surface state at lower pH favoring fast Tafel kinetics with a Tafel slope of 30 mV per decade and the deprotonated surface state at higher pH following Volmer-step limited kinetics with a much higher Tafel slope of 120 mV per decade, offering a robust and precise interpretation of the pH-dependent HER kinetics. These insights may help design improved electrocatalysts for renewable energy conversion.
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Affiliation(s)
- Guangyan Zhong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Tao Cheng
- Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA 91125
| | - Aamir Hassan Shah
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Chengzhang Wan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Zhihong Huang
- Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095
| | - Sibo Wang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Tianle Leng
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA 91125
| | - Yu Huang
- Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095
- California NanoSystems Institute, University of California, Los Angeles, CA 90095
| | - William A. Goddard
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA 91125
- Liquid Sunlight Alliance, California Institute of Technology, Pasadena, CA 91125
| | - Xiangfeng Duan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
- California NanoSystems Institute, University of California, Los Angeles, CA 90095
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4
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Sun F, Tang Q, Jiang DE. Theoretical Advances in Understanding and Designing the Active Sites for Hydrogen Evolution Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02081] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fang Sun
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - Qing Tang
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - De-en Jiang
- Department of Chemistry, University of California, Riverside, California 92521, United States
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5
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Naito T, Shinagawa T, Nishimoto T, Takanabe K. Gas Crossover Regulation by Porosity-Controlled Glass Sheet Achieves Pure Hydrogen Production by Buffered Water Electrolysis at Neutral pH. CHEMSUSCHEM 2022; 15:e202102294. [PMID: 34907667 PMCID: PMC9306655 DOI: 10.1002/cssc.202102294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Near-neutral pH water electrolysis driven by renewable electricity can reduce the costs of clean hydrogen generation, but its low efficiency and gas crossover in industrially relevant conditions remain a challenge. Here, it was shown that electrolyte engineering could suppress the crossover of dissolved gases such as O2 by regulating their diffusion flux. In addition, a hydrophilized mechanically stable glass sheet was found to block the permeation of gas bubbles, further enhancing the purity of evolved gas from water electrolysis. This sheet had a lower resistance than conventional diaphragms such as Zirfon due to its high porosity and small thickness. A saturated K-phosphate solution at pH 7.2 was used as an electrolyte together with the hydrophilized glass sheet as a gas-separator. This led to a near-neutral pH water electrolysis with 100 mA cm-2 at a total cell voltage of 1.56 V with 99.9 % purity of produced H2 .
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Affiliation(s)
- Takahiro Naito
- Department of Chemical System EngineeringSchool of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyo113-8656Japan
| | - Tatsuya Shinagawa
- Department of Chemical System EngineeringSchool of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyo113-8656Japan
| | - Takeshi Nishimoto
- Department of Chemical System EngineeringSchool of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyo113-8656Japan
| | - Kazuhiro Takanabe
- Department of Chemical System EngineeringSchool of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyo113-8656Japan
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6
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Abdul Nasir J, Munir A, Ahmad N, Haq TU, Khan Z, Rehman Z. Photocatalytic Z-Scheme Overall Water Splitting: Recent Advances in Theory and Experiments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2105195. [PMID: 34617345 DOI: 10.1002/adma.202105195] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic water splitting is considered one of the most important and appealing approaches for the production of green H2 to address the global energy demand. The utmost possible form of artificial photosynthesis is a two-step photoexcitation known as "Z-scheme", which mimics the natural photosystem. This process solely relies on the effective coupling and suitable band positions of semiconductors (SCs) and redox mediators for the purpose to catalyze the surface chemical reactions and significantly deter the backward reaction. In recent years, the Z-scheme strategies and their key role have been studied progressively through experimental approaches. In addition, theoretical studies based on density functional theory have provided detailed insight into the mechanistic aspects of some breathtakingly complex problems associated with hydrogen evolution reaction and oxygen evolution reaction. In this context, this critical review gives an overview of the fundamentals of Z-scheme photocatalysis, including both theoretical and experimental advancements in the field of photocatalytic water splitting, and suggests future perspectives.
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Affiliation(s)
- Jamal Abdul Nasir
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Akhtar Munir
- Department of Chemistry, University of Sialkot, 1 Km, main Daska road, Sialkot, Punjab, 51310, Pakistan
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS), DHA, Lahore, 54792, Pakistan
| | - Naveed Ahmad
- Institute of Pharmaceutical Science, Faculty of Life Science and Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
- University of Swat. Charbagh, Swat, Khyber Pakhtunkhwa, Pakistan
| | - Tanveer Ul Haq
- Sustainable Energy Engineering, Frank H. Dotterweich College of Engineering, Texas A&M University, Kingsville, TX, 78363-8202, USA
| | - Zaibunisa Khan
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Ziaur Rehman
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
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7
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Zhang T, Debow S, Song F, Qian Y, Creasy WR, DeLacy BG, Rao Y. Interface Catalysis of Nickel Molybdenum (NiMo) Alloys on Two-Dimensional (2D) MXene for Enhanced Hydrogen Electrochemistry. J Phys Chem Lett 2021; 12:11361-11370. [PMID: 34784226 DOI: 10.1021/acs.jpclett.1c02676] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Development of efficient bifunctional nonprecious metallic electrocatalysts for hydrogen electrochemistry in alkaline solution is of importance to enable commercialization of a low-cost alkaline hydrogen fuel cell and water electrolyzer, but it is very challenging. Two-dimensional (2D) MXene-based electrocatalysts hold tremendous potential for the applications of hydrogen fuel cell and water electrolyzer. Here, we successfully immobilized transition-metal-based NiMo nanoparticles (NPs) on 2D Ti3C2Tx (Tx: surface terminations, such as O, OH, or F) surfaces by a wet chemical method. Our results demonstrate that the NiMo NPs are monodispersed on Ti3C2Tx with surface functionalization. These monodisperse NPs resulted in superior hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR) activities in an alkaline media. The NiMo NPs/Ti3C2Tx in 1.0 M KOH yielded an HER current of -10 mA cm-2 at -0.044 V vs reversible hydrogen electrode (RHE), nearly 232 mV smaller than that of the parent NiMo NPs. The NiMo NPs/Ti3C2Tx produced an HOR current density of 1.5 mA cm-2 at 0.1 V vs RHE. Density functional theory (DFT) results further reveal that Ti3C2Tx support can facilitate the charge transfer to metallic NPs and tailor the electronic structure of catalytic sites, resulting in optimized adsorption free energies of H* species for hydrogen electrochemistry. This work provides a facile and universal strategy in the development of 2D Ti3C2Tx with nonprecious metals for low-cost bifunctional hydrogen electrocatalysts.
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Affiliation(s)
- Tong Zhang
- Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Shaun Debow
- U.S. Army Combat Capabilities Development Command Chemical Biological Center, Research & Technology Directorate, Aberdeen Proving Ground, Maryland 21010, United States
| | - Fuzhan Song
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yuqin Qian
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - William R Creasy
- Leidos Corp. supporting U.S. Army CCDC CBC, Aberdeen Proving Ground, Maryland 21010, United States
| | - Brendan G DeLacy
- Leidos Corp. supporting U.S. Army CCDC CBC, Aberdeen Proving Ground, Maryland 21010, United States
| | - Yi Rao
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
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8
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Hersbach TJP, Garcia AC, Kroll T, Sokaras D, Koper MTM, Garcia-Esparza AT. Base-Accelerated Degradation of Nanosized Platinum Electrocatalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02468] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thomas J. P. Hersbach
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States of America
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Amanda C. Garcia
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Thomas Kroll
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States of America
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States of America
| | - Marc T. M. Koper
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Angel T. Garcia-Esparza
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States of America
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9
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Kageshima Y, Kawanishi T, Saeki D, Teshima K, Domen K, Nishikiori H. Boosted Hydrogen‐Evolution Kinetics Over Particulate Lanthanum and Rhodium‐Doped Strontium Titanate Photocatalysts Modified with Phosphonate Groups. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yosuke Kageshima
- Department of Materials Chemistry Faculty of Engineering Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Toshiki Kawanishi
- Department of Materials Chemistry Faculty of Engineering Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Daisuke Saeki
- Department of Materials Chemistry Faculty of Engineering Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Katsuya Teshima
- Department of Materials Chemistry Faculty of Engineering Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Kazunari Domen
- Research Initiative for Supra-Materials (RISM) Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Office of University Professors The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Hiromasa Nishikiori
- Department of Materials Chemistry Faculty of Engineering Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM) Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
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10
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Kageshima Y, Kawanishi T, Saeki D, Teshima K, Domen K, Nishikiori H. Boosted Hydrogen-Evolution Kinetics Over Particulate Lanthanum and Rhodium-Doped Strontium Titanate Photocatalysts Modified with Phosphonate Groups. Angew Chem Int Ed Engl 2021; 60:3654-3660. [PMID: 33166019 DOI: 10.1002/anie.202011705] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/21/2020] [Indexed: 11/10/2022]
Abstract
Phosphonate groups loaded on the surface of the visible-light-responsive photocatalyst Ru-loaded La,Rh-doped SrTiO3 (Ru/La,Rh:STO) via a silane-coupling treatment enhance the photocatalytic activity of this material during the hydrogen evolution reaction. Surface modification with an alkylsilane phosphonate accelerates the supply of reactants to active sites and is much more effective at improving the photocatalytic activity than the utilization of a phosphate-buffered electrolyte as a reaction solution. In contrast, the incorporation of amine, sulfonate, and propyl groups does not improve the activity. The effects of these functional groups introduced via silane coupling on the reaction kinetics of hydrogen evolution are evaluated separately from the oxidative reaction using electrochemical methods. It was also demonstrated that the present alkylsilane phosphonate modification increases the photocatalytic activity even under a low photon flux.
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Affiliation(s)
- Yosuke Kageshima
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan
| | - Toshiki Kawanishi
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan
| | - Daisuke Saeki
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan
| | - Katsuya Teshima
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan
| | - Kazunari Domen
- Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan.,Office of University Professors, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Hiromasa Nishikiori
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan
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11
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Li X, Du X, Huang S, Xiong L. A hydrogen evolution catalyst lowering energy consumption in aluminum anodization. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00377a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aluminum anodization process requires a lot of electrical energy for the migration of ions in a barrier-type oxide film, in which electrode polarization leads to massive energy consumption.
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Affiliation(s)
- Xiang Li
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Xianfeng Du
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Shan Huang
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
| | - Lilong Xiong
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- School of Chemistry
- Xi'an Jiaotong University
- Xi'an 710049
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12
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Clary KE, Karayilan M, McCleary-Petersen KC, Petersen HA, Glass RS, Pyun J, Lichtenberger DL. Increasing the rate of the hydrogen evolution reaction in neutral water with protic buffer electrolytes. Proc Natl Acad Sci U S A 2020; 117:32947-32953. [PMID: 33310905 PMCID: PMC7777250 DOI: 10.1073/pnas.2012085117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Electrocatalytic generation of H2 is challenging in neutral pH water, where high catalytic currents for the hydrogen evolution reaction (HER) are particularly sensitive to the proton source and solution characteristics. A tris(hydroxymethyl)aminomethane (TRIS) solution at pH 7 with a [2Fe-2S]-metallopolymer electrocatalyst gave catalytic current densities around two orders of magnitude greater than either a more conventional sodium phosphate solution or a potassium chloride (KCl) electrolyte solution. For a planar polycrystalline Pt disk electrode, a TRIS solution at pH 7 increased the catalytic current densities for H2 generation by 50 mA/cm2 at current densities over 100 mA/cm2 compared to a sodium phosphate solution. As a special feature of this study, TRIS is acting not only as the primary source of protons and the buffer of the pH, but the protonated TRIS ([TRIS-H]+) is also the sole cation of the electrolyte. A species that is simultaneously the proton source, buffer, and sole electrolyte is termed a protic buffer electrolyte (PBE). The structure-activity relationships of the TRIS PBE that increase the HER rate of the metallopolymer and platinum catalysts are discussed. These results suggest that appropriately designed PBEs can improve HER rates of any homogeneous or heterogeneous electrocatalyst system. General guidelines for selecting a PBE to improve the catalytic current density of HER systems are offered.
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Affiliation(s)
- Kayla E. Clary
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | - Metin Karayilan
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | | | - Haley A. Petersen
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | - Richard S. Glass
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | - Jeffrey Pyun
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
- Department of Chemical and Biological Engineering, Program for Chemical Convergence for Energy and Environment and the Center for Intelligent Hybrids, Seoul National University, 151-744 Seoul, Korea
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13
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Naito T, Shinagawa T, Nishimoto T, Takanabe K. Water Electrolysis in Saturated Phosphate Buffer at Neutral pH. CHEMSUSCHEM 2020; 13:5921-5933. [PMID: 32875653 PMCID: PMC7756658 DOI: 10.1002/cssc.202001886] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/31/2020] [Indexed: 05/22/2023]
Abstract
Hydrogen production from renewable energy and ubiquitous water has a potential to achieve sustainability, although current water electrolyzers cannot compete economically with the fossil fuel-based technology. Here, we evaluate water electrolysis at pH 7 that is milder than acidic and alkaline pH counterparts and may overcome this issue. The physicochemical properties of concentrated buffer electrolytes were assessed at various temperatures and molalities for quantitative determination of losses associated with mass-transport during the water electrolysis. Subsequently, in saturated K-phosphate solutions at 80 °C and 100 °C that were found to be optimal to minimize the losses originating from mass-transport at the neutral pH, the water electrolysis performance over model electrodes of IrOx and Pt as an anode and a cathode, respectively, was reasonably comparable with those of the extreme pH. Remarkably, this concentrated buffer solution also achieved enhanced stability, adding another merit of this electrolyte for water electrolysis.
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Affiliation(s)
- Takahiro Naito
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Tatsuya Shinagawa
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Takeshi Nishimoto
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
| | - Kazuhiro Takanabe
- Department of ChemicalSystem Engineering, School of EngineeringThe University of Tokyo7-3-1 Hongo, Bunkyo-kuTokyoJapan
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14
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Electrochemical Recycling of Platinum Group Metals from Spent Catalytic Converters. METALS 2020. [DOI: 10.3390/met10060822] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Platinum group metals (PGMs: Pt, Pd, and Rh) are used extensively by the industry, while the natural resources are limited. The PGM concentration in spent catalytic converters is 100 times larger than in natural occurring ores. Traditional PGM methods use high temperature furnaces and strong oxidants, thus polluting the environment. Electrochemical studies showed that platinum can be converted to their chloride form. The amount of dissolved PGM was monitored by inductively coupled plasma-optical emission spectroscopy and the structure was identified by ultraviolet-visible spectroscopy. An electrochemistry protocol was designed to maximize platinum dissolution, which was then used for a spent catalytic converter. A key finding is the use of potential step that enhances the dissolution rate by a factor of 4. Recycling rates as high as 50% were achieved in 24 h without any pretreatment of the catalyst. The method developed herein is part of a current need to make the PGM recycling process more sustainable.
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15
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Shinagawa T, Obata K, Takanabe K. Switching of Kinetically Relevant Reactants for the Aqueous Cathodic Process Determined by Mass‐transport Coupled with Protolysis. ChemCatChem 2019. [DOI: 10.1002/cctc.201901459] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tatsuya Shinagawa
- Department of Chemical System Engineering School of EngineeringThe University of Tokyo Tokyo 113-8656 Japan
| | - Keisuke Obata
- Division of Physical Sciences and Engineering KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi Arabia
- Institute for Solar FuelsHelmholtz-Zentrum Berlin für Materialien und Energie GmbH Berlin 14109 Germany
| | - Kazuhiro Takanabe
- Department of Chemical System Engineering School of EngineeringThe University of Tokyo Tokyo 113-8656 Japan
- Division of Physical Sciences and Engineering KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955 Saudi Arabia
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16
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Wang Q, Domen K. Particulate Photocatalysts for Light-Driven Water Splitting: Mechanisms, Challenges, and Design Strategies. Chem Rev 2019; 120:919-985. [PMID: 31393702 DOI: 10.1021/acs.chemrev.9b00201] [Citation(s) in RCA: 705] [Impact Index Per Article: 141.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Solar-driven water splitting provides a leading approach to store the abundant yet intermittent solar energy and produce hydrogen as a clean and sustainable energy carrier. A straightforward route to light-driven water splitting is to apply self-supported particulate photocatalysts, which is expected to allow solar hydrogen to be competitive with fossil-fuel-derived hydrogen on a levelized cost basis. More importantly, the powder-based systems can lend themselves to making functional panels on a large scale while retaining the intrinsic activity of the photocatalyst. However, all attempts to generate hydrogen via powder-based solar water-splitting systems to date have unfortunately fallen short of the efficiency values required for practical applications. Photocatalysis on photocatalyst particles involves three sequential steps: (i) absorption of photons with higher energies than the bandgap of the photocatalysts, leading to the excitation of electron-hole pairs in the particles, (ii) charge separation and migration of these photoexcited carriers, and (iii) surface chemical reactions based on these carriers. In this review, we focus on the challenges of each step and summarize material design strategies to overcome the obstacles and limitations. This review illustrates that it is possible to employ the fundamental principles underlying photosynthesis and the tools of chemical and materials science to design and prepare photocatalysts for overall water splitting.
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Affiliation(s)
- Qian Wang
- Department of Chemical System Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Kazunari Domen
- Department of Chemical System Engineering, School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Center for Energy & Environmental Science , Shinshu University , 4-17-1 Wakasato , Nagano-shi , Nagano 380-8553 , Japan
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17
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Metal-doped molybdenum nitride films for enhanced hydrogen evolution in near-neutral strongly buffered aerobic media. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.094] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Shinagawa T, Ng MTK, Takanabe K. Electrolyte Engineering towards Efficient Water Splitting at Mild pH. CHEMSUSCHEM 2017; 10:4155-4162. [PMID: 28846205 DOI: 10.1002/cssc.201701266] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/04/2017] [Indexed: 06/07/2023]
Abstract
The development of processes for the conversion of H2 O and CO2 driven by electricity generated by renewable means is essential to achieving sustainable energy and chemical cycles, in which the electrocatalytic oxygen evolution reaction (OER) is one of the bottlenecks. In this study, the influences of the electrolyte molarity and identity on the OER at alkaline to neutral pH were investigated at an appreciable current density of around 10 mA cm-2 , revealing both the clear boundary of reactant switching between H2 O/OH- , owing to the diffusion limitation of OH- , and the substantial contribution of the mass transport of the buffered species in buffered mild-pH conditions. These findings suggest a strategy of electrolyte engineering: tuning the electrolyte properties to maximize the mass-transport flux. The concept is successfully demonstrated for the OER, as well as overall water electrolysis in buffered mild-pH conditions, shedding light on the development of practical solar fuel production systems.
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Affiliation(s)
- Tatsuya Shinagawa
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center and Physical Sciences and Engineering Division, 4700 KAUST, Thuwal, 23955-6900, Saudi Arabia
- Present address: Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Vladmir-Prelog-Weg 1, CH-8093, Zurich, Switzerland
| | - Marcus Tze-Kiat Ng
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center and Physical Sciences and Engineering Division, 4700 KAUST, Thuwal, 23955-6900, Saudi Arabia
| | - Kazuhiro Takanabe
- King Abdullah University of Science and Technology (KAUST), KAUST Catalysis Center and Physical Sciences and Engineering Division, 4700 KAUST, Thuwal, 23955-6900, Saudi Arabia
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19
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Takanabe K. Photocatalytic Water Splitting: Quantitative Approaches toward Photocatalyst by Design. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02662] [Citation(s) in RCA: 473] [Impact Index Per Article: 67.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kazuhiro Takanabe
- King Abdullah University of Science and Technology (KAUST), KAUST
Catalysis Center (KCC) and Physical Sciences and Engineering Division
(PSE), 4700 KAUST, Thuwal 23955-6900, Saudi Arabia
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20
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Garcia-Esparza AT, Shinagawa T, Ould-Chikh S, Qureshi M, Peng X, Wei N, Anjum DH, Clo A, Weng TC, Nordlund D, Sokaras D, Kubota J, Domen K, Takanabe K. An Oxygen-Insensitive Hydrogen Evolution Catalyst Coated by a Molybdenum-Based Layer for Overall Water Splitting. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701861] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Angel T. Garcia-Esparza
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Tatsuya Shinagawa
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Samy Ould-Chikh
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Muhammad Qureshi
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Xuyuan Peng
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Nini Wei
- Advanced Nanofabrication; Imaging and Characterization Core Lab; King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Dalaver H. Anjum
- Advanced Nanofabrication; Imaging and Characterization Core Lab; King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Alain Clo
- Research Computing; King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
| | - Tsu-Chien Weng
- Center for High Pressure Science & Technology Advanced Research; 1690 Cailun Rd, Bldg. #6-408, Pudong Shanghai 201203 China
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource; 2575 Sand Hill Road Menlo Park CA 94025 USA
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource; 2575 Sand Hill Road Menlo Park CA 94025 USA
| | - Jun Kubota
- Department of Chemical Engineering; Fukuoka University; 8-19-1 Nanakuma, Jonan-ku Fukuoka 814-0180 Japan
| | - Kazunari Domen
- Department of Chemical System Engineering; School of Engineering; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Kazuhiro Takanabe
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia
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21
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Garcia-Esparza AT, Shinagawa T, Ould-Chikh S, Qureshi M, Peng X, Wei N, Anjum DH, Clo A, Weng TC, Nordlund D, Sokaras D, Kubota J, Domen K, Takanabe K. An Oxygen-Insensitive Hydrogen Evolution Catalyst Coated by a Molybdenum-Based Layer for Overall Water Splitting. Angew Chem Int Ed Engl 2017; 56:5780-5784. [PMID: 28407339 DOI: 10.1002/anie.201701861] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 03/04/2017] [Indexed: 11/07/2022]
Abstract
For overall water-splitting systems, it is essential to establish O2 -insensitive cathodes that allow cogeneration of H2 and O2 . An acid-tolerant electrocatalyst is described, which employs a Mo-coating on a metal surface to achieve selective H2 evolution in the presence of O2 . In operando X-ray absorption spectroscopy identified reduced Pt covered with an amorphous molybdenum oxyhydroxide hydrate with a local structural order composed of polyanionic trimeric units of molybdenum(IV). The Mo layer likely hinders O2 gas permeation, impeding contact with active Pt. Photocatalytic overall water splitting proceeded using MoOx /Pt/SrTiO3 with inhibited water formation from H2 and O2 , which is the prevailing back reaction on the bare Pt/SrTiO3 photocatalyst. The Mo coating was stable in acidic media for multiple hours of overall water splitting by membraneless electrolysis and photocatalysis.
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Affiliation(s)
- Angel T Garcia-Esparza
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Tatsuya Shinagawa
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Samy Ould-Chikh
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Muhammad Qureshi
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Xuyuan Peng
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Nini Wei
- Advanced Nanofabrication, Imaging and Characterization Core Lab, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Dalaver H Anjum
- Advanced Nanofabrication, Imaging and Characterization Core Lab, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Alain Clo
- Research Computing, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Tsu-Chien Weng
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Bldg. #6-408, Pudong, Shanghai, 201203, China
| | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Jun Kubota
- Department of Chemical Engineering, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Kazunari Domen
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Kazuhiro Takanabe
- KAUST Catalysis Center (KCC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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22
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Shinagawa T, Takanabe K. Towards Versatile and Sustainable Hydrogen Production through Electrocatalytic Water Splitting: Electrolyte Engineering. CHEMSUSCHEM 2017; 10:1318-1336. [PMID: 27984671 PMCID: PMC5413865 DOI: 10.1002/cssc.201601583] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/15/2016] [Indexed: 05/22/2023]
Abstract
Recent advances in power generation from renewable resources necessitate conversion of electricity to chemicals and fuels in an efficient manner. Electrocatalytic water splitting is one of the most powerful and widespread technologies. The development of highly efficient, inexpensive, flexible, and versatile water electrolysis devices is desired. This review discusses the significance and impact of the electrolyte on electrocatalytic performance. Depending on the circumstances under which the water splitting reaction is conducted, the required solution conditions, such as the identity and molarity of ions, may significantly differ. Quantitative understanding of such electrolyte properties on electrolysis performance is effective to facilitate the development of efficient electrocatalytic systems. The electrolyte can directly participate in reaction schemes (kinetics), affect electrode stability, and/or indirectly impact the performance by influencing the concentration overpotential (mass transport). This review aims to guide fine-tuning of the electrolyte properties, or electrolyte engineering, for (photo)electrochemical water splitting reactions.
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Affiliation(s)
- Tatsuya Shinagawa
- KAUST Catalysis Center and Physical Sciences and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)4700 KAUSTThuwal23955-6900Saudi Arabia
| | - Kazuhiro Takanabe
- KAUST Catalysis Center and Physical Sciences and Engineering DivisionKing Abdullah University of Science and Technology (KAUST)4700 KAUSTThuwal23955-6900Saudi Arabia
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23
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Lai F, Miao YE, Huang Y, Zhang Y, Liu T. Nitrogen-Doped Carbon Nanofiber/Molybdenum Disulfide Nanocomposites Derived from Bacterial Cellulose for High-Efficiency Electrocatalytic Hydrogen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:3558-66. [PMID: 26302501 DOI: 10.1021/acsami.5b06274] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
To remit energy crisis and environmental deterioration, non-noble metal nanocomposites have attracted extensive attention, acting as a fresh kind of cost-effective electrocatalysts for hydrogen evolution reaction (HER). In this work, hierarchically organized nitrogen-doped carbon nanofiber/molybdenum disulfide (pBC-N/MoS2) nanocomposites were successfully prepared via the combination of in situ polymerization, high-temperature carbonization process, and hydrothermal reaction. Attributing to the uniform coating of polyaniline on the surface of bacterial cellulose, the nitrogen-doped carbon nanofiber network acts as an excellent three-dimensional template for hydrothermal growth of MoS2 nanosheets. The obtained hierarchical pBC-N/MoS2 nanocomposites exhibit excellent electrocatalytic activity for HER with small overpotential of 108 mV, high current density of 8.7 mA cm(-2) at η = 200 mV, low Tafel slope of 61 mV dec(-1), and even excellent stability. The greatly improved performance is benefiting from the highly exposed active edge sites of MoS2 nanosheets, the intimate connection between MoS2 nanosheets and the highly conductive nitrogen-doped carbon nanofibers and the three-dimensional networks thus formed. Therefore, this work provides a novel strategy for design and application of bacterial cellulose and MoS2-based nanocomposites as cost-effective HER eletrocatalysts.
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Affiliation(s)
- Feili Lai
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, P. R. China
| | - Yue-E Miao
- State Key Laboratory of Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University , Shanghai 201620, P. R. China
| | - Yunpeng Huang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, P. R. China
| | - Youfang Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, P. R. China
| | - Tianxi Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, P. R. China
- State Key Laboratory of Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University , Shanghai 201620, P. R. China
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24
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Electrocatalytic Oxidation of Cellulose to Gluconate on Carbon Aerogel Supported Gold Nanoparticles Anode in Alkaline Medium. Catalysts 2015. [DOI: 10.3390/catal6010005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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25
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Shinagawa T, Takanabe K. Identification of intrinsic catalytic activity for electrochemical reduction of water molecules to generate hydrogen. Phys Chem Chem Phys 2015; 17:15111-4. [DOI: 10.1039/c5cp02330k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Addition of foreign metal onto platinum nearly doubles its reactivity toward water molecule reduction under unbuffered neutral pH conditions.
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Affiliation(s)
- Tatsuya Shinagawa
- Division of Physical Sciences and Engineering
- KAUST Catalysis Center (KCC)
- King Abdullah University of Science and Technology (KAUST)
- Thuwal
- Saudi Arabia
| | - Kazuhiro Takanabe
- Division of Physical Sciences and Engineering
- KAUST Catalysis Center (KCC)
- King Abdullah University of Science and Technology (KAUST)
- Thuwal
- Saudi Arabia
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26
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