1
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Salek S, Byers JC. Influence of Particle Size on Mass Transport during the Oxygen Reduction Reaction at Single Silver Particles Using Scanning Electrochemical Cell Microscopy. J Phys Chem Lett 2024; 15:8494-8500. [PMID: 39133521 DOI: 10.1021/acs.jpclett.4c01832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Single entity electrochemical measurements enable insight into the electrocatalytic activity of individual particles based on composition, shape, and crystallographic orientation. In addition to structural effects, particle size can further influence electrocatalytic activity and reaction mechanisms through mass transport effects. In this work, electrodeposition was used to grow well-separated silver particles of varying sizes from 100 to 500 nm in radius. Using a multimicroscopy approach of scanning electrochemical cell microscopy combined with scanning electron microscopy, the electrocatalytic current of individual silver particles toward the oxygen reduction reaction was evaluated as a function of their size. It was found that the current density increased with decreasing particle radius, which was correlated to the mass transport of oxygen to the silver particle, demonstrating the importance of size dependent mass transport effects that can occur at the single particle level using scanning electrochemical cell microscopy and opening new opportunities for quantitative electrocatalysis measurements.
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Affiliation(s)
- Samaneh Salek
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, succursale Centre-Ville, Montréal, Québec H3C 3P8, Canada
| | - Joshua C Byers
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, succursale Centre-Ville, Montréal, Québec H3C 3P8, Canada
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2
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Kasuk KA, Nerut J, Grozovski V, Lust E, Kucernak A. Design and Impact: Navigating the Electrochemical Characterization Methods for Supported Catalysts. ACS Catal 2024; 14:11949-11966. [PMID: 39169910 PMCID: PMC11334114 DOI: 10.1021/acscatal.4c03271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 07/16/2024] [Accepted: 07/16/2024] [Indexed: 08/23/2024]
Abstract
This review will investigate the impact of electrochemical characterization method design choices on intrinsic catalyst activity measurements by predominantly using the oxygen reduction reaction (ORR) on supported catalysts as a model reaction. The wider use of hydrogen for transportation or electrical grid stabilization requires improvements in proton exchange membrane fuel cell (PEMFC) performance. One of the areas for improvement is the (ORR) catalyst efficiency and durability. Research and development of the traditional platinum-based catalysts have commonly been performed using rotating disk electrodes (RDE), rotating ring disk electrodes (RRDE), and membrane electrode assemblies (MEAs). However, the mass transport conditions of RDE and RRDE limit their usefulness in characterizing supported catalysts at high current densities, and MEA characterizations can be complex, lengthy, and costly. Ultramicroelectrode with a catalyst-filled cavity addresses some of these problems, but with limited success. Due to the properties discussed in this review, the recent floating electrode (FE) and the gas diffusion electrode (GDE) methods offer additional capabilities in the electrochemical characterization process. With the FE technique, the intrinsic activity of catalysts for ORR can be investigated, leading to a better understanding of the ORR mechanism through more reliable experimental data from application-relevant high-mass transport conditions. The GDEs are helpful bridging tools between RDE and MEA experiments, simplifying the fuel cell and electrolyzer manufacturing and operating optimization process.
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Affiliation(s)
- Karl-Ander Kasuk
- Institute
of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Jaak Nerut
- Institute
of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Vitali Grozovski
- Institute
of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Enn Lust
- Institute
of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Anthony Kucernak
- Department
of Chemistry, Imperial College London, 80 Wood Lane, W12 7TA London, United Kingdom
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3
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Clarke TB, Krushinski LE, Vannoy KJ, Colón-Quintana G, Roy K, Rana A, Renault C, Hill ML, Dick JE. Single Entity Electrocatalysis. Chem Rev 2024; 124:9015-9080. [PMID: 39018111 DOI: 10.1021/acs.chemrev.3c00723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
Making a measurement over millions of nanoparticles or exposed crystal facets seldom reports on reactivity of a single nanoparticle or facet, which may depart drastically from ensemble measurements. Within the past 30 years, science has moved toward studying the reactivity of single atoms, molecules, and nanoparticles, one at a time. This shift has been fueled by the realization that everything changes at the nanoscale, especially important industrially relevant properties like those important to electrocatalysis. Studying single nanoscale entities, however, is not trivial and has required the development of new measurement tools. This review explores a tale of the clever use of old and new measurement tools to study electrocatalysis at the single entity level. We explore in detail the complex interrelationship between measurement method, electrocatalytic material, and reaction of interest (e.g., carbon dioxide reduction, oxygen reduction, hydrazine oxidation, etc.). We end with our perspective on the future of single entity electrocatalysis with a key focus on what types of measurements present the greatest opportunity for fundamental discovery.
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Affiliation(s)
- Thomas B Clarke
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Lynn E Krushinski
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Kathryn J Vannoy
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | | | - Kingshuk Roy
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ashutosh Rana
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christophe Renault
- Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, Illinois 60660, United States
| | - Megan L Hill
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jeffrey E Dick
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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4
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Geng C, Jiang X, Hong S, Wang L, Zhao Y, Qi J, Shi J, Wang J, Peng L, Hu Z, Guo Y, Jin FM, Yang QH, Lv W. Unveiling the Role of Electric Double-Layer in Sulfur Catalysis for Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2407741. [PMID: 39091050 DOI: 10.1002/adma.202407741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/08/2024] [Indexed: 08/04/2024]
Abstract
The metal-catalyzed sulfur reaction in lithium-sulfur (Li-S) batteries usually suffers from the strong binding of sulfur species to the catalyst surface, which destroys the electric double layer (EDL) region there. This causes rapid catalyst deactivation because it prevents the desorption of sulfur species and mass transport through the EDL is hindered. This work introduces a competitive adsorption factor (fsulfur) as a new indicator to quantify the competitive adsorption of sulfur species in the EDL and proposes an alloying method to change it by strengthening the p-d hybridization of alloying metals with electrolyte solvents. A cobalt-zinc alloy catalyst with a moderate fsulfur lowers the activation energy of the rate-limiting step of the conversion of lithium polysulfides to lithium sulfide, giving a platform capacity proportion that is 96% of the theoretical value and has a greatly improved anti-passivation ability, especially at high sulfur loadings and lean electrolyte conditions (a low E/S ratio of 5 µL mgS -1). A pouch cell using this approach has a high energy density of up to 464 Wh kg-1. Such a competitive adsorption indicator and alloying strategy offer a new guideline for catalyst design and a practical electrocatalysis solution for Li-S batteries.
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Affiliation(s)
- Chuannan Geng
- Shenzhen Geim Graphene Center, Engineering Laboratory for Functionalized Carbon Materials, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Xin Jiang
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Shuang Hong
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Li Wang
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207, China
| | - Yufei Zhao
- Shenzhen Geim Graphene Center, Engineering Laboratory for Functionalized Carbon Materials, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207, China
| | - Jiangshan Qi
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Jiwei Shi
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207, China
| | - Junjie Wang
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Linkai Peng
- Shenzhen Geim Graphene Center, Engineering Laboratory for Functionalized Carbon Materials, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Zhonghao Hu
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Yong Guo
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Feng-Min Jin
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Quan-Hong Yang
- Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207, China
| | - Wei Lv
- Shenzhen Geim Graphene Center, Engineering Laboratory for Functionalized Carbon Materials, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
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5
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Li R, Fan W, Rao P, Luo J, Li J, Deng P, Wu D, Huang W, Jia C, Liu Z, Miao Z, Tian X. Multimetallic Single-Atom Catalysts for Bifunctional Oxygen Electrocatalysis. ACS NANO 2023; 17:18128-18138. [PMID: 37690054 DOI: 10.1021/acsnano.3c04945] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Multimetallic alloys have demonstrated promising performance for the application of metal-air batteries, while it remains a challenge to design multimetallic single-atom catalysts (MM-SACs). Herein, metal-C3N4 and nitrogen-doped carbon are employed as cornerstones to synthesize MM-SACs by a general two-step method, and the inherent features of atomic dispersion and the strong electronic reciprocity between the multimetallic sites have been verified. The trimetallic FeCoZn-SACs and quatermetallic FeCoCuZn-SACs are both found to deliver superior oxygen evolution reaction and oxygen reduction reaction activity, respectively, as well as outstanding bifunctional durability. Density functional theory calculations elucidate the crucial contribution of Co sites of FeCoCuZn-SACs to the efficient catalysis of both the ORR and the OER. More importantly, Zn-air batteries with FeCoCuZn-SACs as cathodic catalysts exhibit a high power density (252 mW cm-2), high specific capacity (817 mAh gZn-1), and considerable stability (over 225 h) for charging-discharging processes. This work provides a visual perspective for the advantages of MM-SACs toward oxygen electrocatalysis.
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Affiliation(s)
- Ruisong Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Wenjun Fan
- Dalian National Laboratory for Clean Energy, State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Peng Rao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Junming Luo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Jing Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Peilin Deng
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Daoxiong Wu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Wei Huang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Chunman Jia
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Zhongxin Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Zhengpei Miao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Xinlong Tian
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
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6
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Malik AQ, Mir TUG, Kumar D, Mir IA, Rashid A, Ayoub M, Shukla S. A review on the green synthesis of nanoparticles, their biological applications, and photocatalytic efficiency against environmental toxins. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27437-9. [PMID: 37171732 DOI: 10.1007/s11356-023-27437-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 05/01/2023] [Indexed: 05/13/2023]
Abstract
Green synthesis of nanoparticles (NPs) using plant materials and microorganisms has evolved as a sustainable alternative to conventional techniques that rely on toxic chemicals. Recently, green-synthesized eco-friendly NPs have attracted interest for their potential use in various biological applications. Several studies have demonstrated that green-synthesized NPs are beneficial in multiple medicinal applications, including cancer treatment, targeted drug delivery, and wound healing. Additionally, due to their photodegradation activity, green-synthesized NPs are a promising tool in environmental remediation. Photodegradation is a process that uses light and a photocatalyst to turn a pollutant into a harmless product. Green NPs have been found efficient in degrading pollutants such as dyes, herbicides, and heavy metals. The use of microbes and flora in green synthesis technology for nanoparticle synthesis is biologically safe, cost-effective, and eco-friendly. Plants and microbes can now use and accumulate inorganic metallic ions in the environment. Various NPs have been synthesized via the bio-reduction of biological entities or their extracts. There are several biological and environmental uses for biologically synthesized metallic NPs, such as photocatalysis, adsorption, and water purification. Since the last decade, the green synthesis of NPs has gained significant interest in the scientific community. Therefore, there is a need for a review that serves as a one-stop resource that points to relevant and recent studies on the green synthesis of NPs and their biological and photocatalytic efficiency. This review focuses on the green fabrication of NPs utilizing diverse biological systems and their applications in biological and photodegradation processes.
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Affiliation(s)
- Azad Qayoom Malik
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India, 144411.
| | - Tahir Ul Gani Mir
- School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, India, 144411
| | - Deepak Kumar
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India, 144411
| | - Irtiqa Ashraf Mir
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India, 144411
| | - Adfar Rashid
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India, 144411
| | - Mehnaz Ayoub
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India, 144411
| | - Saurabh Shukla
- School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, India, 144411
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7
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Borodaenko Y, Khairullina E, Levshakova A, Shmalko A, Tumkin I, Gurbatov S, Mironenko A, Mitsai E, Modin E, Gurevich EL, Kuchmizhak AA. Noble-Metal Nanoparticle-Embedded Silicon Nanogratings via Single-Step Laser-Induced Periodic Surface Structuring. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1300. [PMID: 37110886 PMCID: PMC10146168 DOI: 10.3390/nano13081300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/30/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
Here, we show that direct femtosecond laser nanostructuring of monocrystalline Si wafers in aqueous solutions containing noble-metal precursors (such as palladium dichloride, potassium hexachloroplatinate, and silver nitrate) allows for the creation of nanogratings decorated with mono- (Pd, Pt, and Ag) and bimetallic (Pd-Pt) nanoparticles (NPs). Multi-pulse femtosecond-laser exposure was found to drive periodically modulated ablation of the Si surface, while simultaneous thermal-induced reduction of the metal-containing acids and salts causes local surface morphology decoration with functional noble metal NPs. The orientation of the formed Si nanogratings with their nano-trenches decorated with noble-metal NPs can be controlled by the polarization direction of the incident laser beam, which was justified, for both linearly polarized Gaussian and radially (azimuthally) polarized vector beams. The produced hybrid NP-decorated Si nanogratings with a radially varying nano-trench orientation demonstrated anisotropic antireflection performance, as well as photocatalytic activity, probed by SERS tracing of the paraaminothiophenol-to-dimercaptoazobenzene transformation. The developed single-step maskless procedure of liquid-phase Si surface nanostructuring that proceeds simultaneously with the localized reduction of noble-metal precursors allows for the formation of hybrid Si nanogratings with controllable amounts of mono- and bimetallic NPs, paving the way toward applications in heterogeneous catalysis, optical detection, light harvesting, and sensing.
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Affiliation(s)
- Yulia Borodaenko
- Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia
| | - Evgeniia Khairullina
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Aleksandra Levshakova
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Alexander Shmalko
- Interdisciplinary Resource Center for Nanotechnology of Research Park of SPbSU, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Ilya Tumkin
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 St. Petersburg, Russia
| | - Stanislav Gurbatov
- Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia
| | | | - Eugeny Mitsai
- Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia
| | - Evgeny Modin
- CIC nanoGUNE BRTA, E-20018 Donostia-San Sebastian, Spain
| | - Evgeny L. Gurevich
- Laser Center (LFM), University of Applied Sciences Munster, Stegerwaldstraße 39, 48565 Steinfurt, Germany
| | - Aleksandr A. Kuchmizhak
- Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia
- Far Eastern Federal University, 690090 Vladivostok, Russia
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8
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Santana Santos C, Jaato BN, Sanjuán I, Schuhmann W, Andronescu C. Operando Scanning Electrochemical Probe Microscopy during Electrocatalysis. Chem Rev 2023; 123:4972-5019. [PMID: 36972701 PMCID: PMC10168669 DOI: 10.1021/acs.chemrev.2c00766] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Scanning electrochemical probe microscopy (SEPM) techniques can disclose the local electrochemical reactivity of interfaces in single-entity and sub-entity studies. Operando SEPM measurements consist of using a SEPM tip to investigate the performance of electrocatalysts, while the reactivity of the interface is simultaneously modulated. This powerful combination can correlate electrochemical activity with changes in surface properties, e.g., topography and structure, as well as provide insight into reaction mechanisms. The focus of this review is to reveal the recent progress in local SEPM measurements of the catalytic activity of a surface toward the reduction and evolution of O2 and H2 and electrochemical conversion of CO2. The capabilities of SEPMs are showcased, and the possibility of coupling other techniques to SEPMs is presented. Emphasis is given to scanning electrochemical microscopy (SECM), scanning ion conductance microscopy (SICM), electrochemical scanning tunneling microscopy (EC-STM), and scanning electrochemical cell microscopy (SECCM).
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Affiliation(s)
- Carla Santana Santos
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Bright Nsolebna Jaato
- Technical Chemistry III, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Carl-Benz-Straße 199, 47057 Duisburg, Germany
| | - Ignacio Sanjuán
- Technical Chemistry III, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Carl-Benz-Straße 199, 47057 Duisburg, Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Corina Andronescu
- Technical Chemistry III, Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Carl-Benz-Straße 199, 47057 Duisburg, Germany
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9
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Rahman MM, Tolbert CL, Saha P, Halpern JM, Hill CM. On-Demand Electrochemical Fabrication of Ordered Nanoparticle Arrays using Scanning Electrochemical Cell Microscopy. ACS NANO 2022; 16:21275-21282. [PMID: 36399100 DOI: 10.1021/acsnano.2c09336] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Well-ordered nanoparticle arrays are attractive platforms for a variety of analytical applications, but the fabrication of such arrays is generally challenging. Here, it is demonstrated that scanning electrochemical cell microscopy (SECCM) can be used as a powerful, instantly reconfigurable tool for the fabrication of ordered nanoparticle arrays. Using SECCM, Ag nanoparticle arrays were straightforwardly fabricated via electrodeposition at the interface between a substrate electrode and an electrolyte-filled pipet. By dynamically monitoring the currents flowing in an SECCM cell, individual nucleation and growth events could be detected and controlled to yield individual nanoparticles of controlled size. Characterization of the resulting arrays demonstrate that this SECCM-based approach enables spatial control of nanoparticle location comparable with the terminal diameter of the pipet employed and straightforward control over the volume of material deposited at each site within an array. These results provide further evidence for the utility of probe-based electrochemical techniques such as SECCM as tools for surface modification in addition to analysis.
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Affiliation(s)
- Md Maksudur Rahman
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming82071, United States
| | - Chloe L Tolbert
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming82071, United States
| | - Partha Saha
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming82071, United States
| | - Jeffrey M Halpern
- Department of Chemical Engineering and the Materials Science and Engineering Program, University of New Hampshire, 33 Academic Way, Durham, New Hampshire03824, United States
| | - Caleb M Hill
- Department of Chemistry, University of Wyoming, 1000 East University Avenue, Laramie, Wyoming82071, United States
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10
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Qi J, Wang W, Li Y, Sun Y, Wu Z, Bao K, Wang L, Ye R, Ding M, He Q. On-Chip Investigation of Electrocatalytic Oxygen Reduction Reaction of 2D Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204010. [PMID: 36251777 DOI: 10.1002/smll.202204010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/22/2022] [Indexed: 06/16/2023]
Abstract
The on-chip electrocatalytic microdevice (OCEM) is an emerging platform specialized in the electrochemical investigation of single-entity nanomaterials, which is ideal for probing the intrinsic catalytic properties, optimizing performance, and exploring exotic mechanisms. However, the current catalytic applications of OCEMs are almost exclusively in electrocatalytic hydrogen/oxygen evolution reactions with minimized influence from the mass transfer. Here, an OCEM platform specially tailored to investigate the electrocatalytic oxygen reduction reaction (ORR) at a microscopic level by introducing electrolyte convection through a microfluidic flow cell is reported. The setup is established on gold microelectrodes and later successfully applied to investigate how Ar-plasma treatment affects the ORR activities of 2H MoS2 . This study finds that Ar-plasma treatment significantly enhances the ORR performance of MoS2 nanosheets owing to the introduction of surface defects. This study paves the way for highly efficient microscopic investigation of diffusion-controlled electrocatalytic reactions.
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Affiliation(s)
- Junlei Qi
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Wenbin Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Yihan Li
- School of Energy and Power Engineering, Beihang University, 37 Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Yamei Sun
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zongxiao Wu
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Kai Bao
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Lingzhi Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Ruquan Ye
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Mengning Ding
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Qiyuan He
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
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11
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Yang X, Zeng Y, Alnoush W, Hou Y, Higgins D, Wu G. Tuning Two-Electron Oxygen-Reduction Pathways for H 2 O 2 Electrosynthesis via Engineering Atomically Dispersed Single Metal Site Catalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107954. [PMID: 35133688 DOI: 10.1002/adma.202107954] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/03/2022] [Indexed: 06/14/2023]
Abstract
The hydrogen peroxide (H2 O2 ) generation via the electrochemical oxygen reduction reaction (ORR) under ambient conditions is emerging as an alternative and green strategy to the traditional energy-intensive anthraquinone process and unsafe direct synthesis using H2 and O2 . It enables on-site and decentralized H2 O2 production using air and renewable electricity for various applications. Currently, atomically dispersed single metal site catalysts have emerged as the most promising platinum group metal (PGM)-free electrocatalysts for the ORR. Further tuning their central metal sites, coordination environments, and local structures can be highly active and selective for H2 O2 production via the 2e- ORR. Herein, recent methodologies and achievements on developing single metal site catalysts for selective O2 to H2 O2 reduction are summarized. Combined with theoretical computation and advanced characterization, a structure-property correlation to guide rational catalyst design with a favorable 2e- ORR process is aimed to provide. Due to the oxidative nature of H2 O2 and the derived free radicals, catalyst stability and effective solutions to improve catalyst tolerance to H2 O2 are emphasized. Transferring intrinsic catalyst properties to electrode performance for viable applications always remains a grand challenge. The key performance metrics and knowledge during the electrolyzer development are, therefore, highlighted.
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Affiliation(s)
- Xiaoxuan Yang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Yachao Zeng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Wajdi Alnoush
- Department of Chemical Engineering, McMaster University, Hamilton, ON, L8S 4L7, Canada
| | - Yang Hou
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
- Institute of Zhejiang University - Quzhou, Quzhou, Zhejiang, 324000, China
| | - Drew Higgins
- Department of Chemical Engineering, McMaster University, Hamilton, ON, L8S 4L7, Canada
| | - Gang Wu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
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12
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Capabilities and limitations of rotating disk electrodes versus membrane electrode assemblies in the investigation of electrocatalysts. Nat Catal 2022. [DOI: 10.1038/s41929-022-00776-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Tang M, Zhang S, Chen S. Pt utilization in proton exchange membrane fuel cells: structure impacting factors and mechanistic insights. Chem Soc Rev 2022; 51:1529-1546. [PMID: 35138316 DOI: 10.1039/d1cs00981h] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It is essential to realize an expected low usage of platinum (Pt) in proton exchange membrane fuel cells (PEMFCs) for the large-scale market penetration of PEMFC-powered vehicles. As well as seeking Pt-based catalysts with a high specific activity, improving Pt utilization through structure optimization of the catalyst layer (CL) has been the main route and apparently a more practical way so far to develop high-performance low-Pt PEMFCs. Despite the significant progress achieved in the past 2-3 decades, a visible gap remains between the current Pt demand of automobile PEMFCs and the target value. To further increase Pt utilization, insights from previous studies are necessary. This review analyzes the structural factors that impact the current-generation efficiency of Pt in PEMFC electrodes in great detail, with emphasis particularly put on the mechanistic and molecule-level insights into the structural effects. The contents include the so-called local transport resistance associated with the permeation and diffusion of oxygen molecules in the ionomer film covering the Pt surface, regulation of ionomer aggregation through molecular interactions between ink components, modulation of ionomer distribution through pore size exclusion and surface electrostatic interaction of the carbon support, optimization of the coupling between the reaction and transport processes through graded composition, and the formation of highways of protons, electrons, and gas molecules through component alignment. We provide a critical analysis of the measurement methods and theoretical models assessing the local transport resistance, which is considered as a crucial issue in the current-generation efficiency of Pt in ultralow-Pt CL. Finally, new opportunities toward the further promotion of Pt utilization are proposed. These subjects and discussions should be of great significance in the rational design and precise fabrication of PEMFC electrodes, and may also inspire similar subjects in other electrochemical energy technologies such as water electrolysis, CO2 reduction, and batteries.
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Affiliation(s)
- Meihua Tang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
| | - Shiming Zhang
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai 200444, China
| | - Shengli Chen
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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14
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Wang H, Jusys Z, Behm RJ, Abruña HD. A channel flow cell with double disk electrodes for oxygen electroreduction study at elevated temperatures and pressures: Theory. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Gwon HJ, Lim D, Ahn HS. Bioanalytical chemistry with scanning electrochemical microscopy. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hyo Jin Gwon
- Department of Chemistry Institution: Yonsei University Seoul South Korea
| | - Donghoon Lim
- Department of Chemistry Institution: Yonsei University Seoul South Korea
| | - Hyun S. Ahn
- Department of Chemistry Institution: Yonsei University Seoul South Korea
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16
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Hou S, Kluge RM, Haid RW, Gubanova EL, Watzele SA, Bandarenka AS, Garlyyev B. A Review on Experimental Identification of Active Sites in Model Bifunctional Electrocatalytic Systems for Oxygen Reduction and Evolution Reactions. ChemElectroChem 2021. [DOI: 10.1002/celc.202100584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shujin Hou
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
- Catalysis Research Center TUM Ernst-Otto-Fischer-Str. 1 85748 Garching bei München Germany
| | - Regina M. Kluge
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Richard W. Haid
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Elena L. Gubanova
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Sebastian A. Watzele
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
- Catalysis Research Center TUM Ernst-Otto-Fischer-Str. 1 85748 Garching bei München Germany
| | - Batyr Garlyyev
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
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17
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Observing, tracking and analysing electrochemically induced atomic-scale structural changes of an individual Pt-Co nanoparticle as a fuel cell electrocatalyst by combining modified floating electrode and identical location electron microscopy. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138513] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Ohma A, Furuya Y, Mashio T, Ito M, Nomura K, Nagao T, Nishihara H, Jinnai H, Kyotani T. Elucidation of oxygen reduction reaction and nanostructure of platinum-loaded graphene mesosponge for polymer electrolyte fuel cell electrocatalyst. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137705] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Masa J, Andronescu C, Schuhmann W. Electrocatalysis as the Nexus for Sustainable Renewable Energy: The Gordian Knot of Activity, Stability, and Selectivity. Angew Chem Int Ed Engl 2020; 59:15298-15312. [PMID: 32608122 PMCID: PMC7496542 DOI: 10.1002/anie.202007672] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Indexed: 01/11/2023]
Abstract
The use of renewable energy by means of electrochemical techniques by converting H2 O, CO2 and N2 into chemical energy sources and raw materials, is the basis for securing a future sustainable "green" energy supply. Some weaknesses and inconsistencies in the practice of determining the electrocatalytic performance, which prevents a rational bottom-up catalyst design, are discussed. Large discrepancies in material properties as well as in electrocatalytic activity and stability become obvious when materials are tested under the conditions of their intended use as opposed to the usual laboratory conditions. They advocate for uniform activity/stability correlations under application-relevant conditions, and the need for a clear representation of electrocatalytic performance by contextualization in terms of functional investigation or progress towards application is emphasized.
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Affiliation(s)
- Justus Masa
- Max Planck Institute for Chemical Energy ConversionStiftstrasse 34–3645470Mülheim an der RuhrGermany
| | - Corina Andronescu
- Faculty of ChemistryTechnical Chemistry IIIUniversity of Duisburg-EssenCarl-Benz-Str. 201, ZBT 24147057DuisburgGermany
| | - Wolfgang Schuhmann
- Analytical Chemistry—Center for Electrochemical Sciences (CES)Faculty of Chemistry and BiochemistryRuhr University BochumUniversitätstr. 15044780BochumGermany
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20
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Masa J, Andronescu C, Schuhmann W. Elektrokatalyse als Nexus für nachhaltige erneuerbare Energien – der gordische Knoten aus Aktivität, Stabilität und Selektivität. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007672] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Justus Masa
- Max Planck Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
| | - Corina Andronescu
- Fakultät für Chemie Technische Chemie III Universität Duisburg-Essen Carl-Benz-Straße 201, ZBT 241 47057 Duisburg Deutschland
| | - Wolfgang Schuhmann
- Analytische Chemie – Zentrum für Elektrochemie (CES) Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätstraße 150 44780 Bochum Deutschland
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21
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Zhang J, Zhang H, Cheng MJ, Lu Q. Tailoring the Electrochemical Production of H 2 O 2 : Strategies for the Rational Design of High-Performance Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1902845. [PMID: 31539208 DOI: 10.1002/smll.201902845] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/30/2019] [Indexed: 06/10/2023]
Abstract
The production of H2 O2 via the electrochemical oxygen reduction reaction (ORR) presents an attractive decentralized alternative to the current industry-dominant anthraquinone process. However, in order to achieve viable commercialization of this process, a state-of-the-art electrocatalyst exhibiting high activity, selectivity, and long-term stability is imperative for industrial applications. Herein, an in-depth discussion on the current frontiers in electrocatalyst design is provided, emphasizing the influences of electronic and geometric effects, surface structure, and the effects of heteroatom functionalization on the catalytic performance of commonly studied materials (metals, alloys, carbons). The limitations on the performance of the current catalyst materials are also discussed, together with alternative strategies to overcome the impediments. Finally, directions of future research efforts for the discovery of next-generation ORR electrocatalysts are highlighted.
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Affiliation(s)
- Jiayi Zhang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Haochen Zhang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Qi Lu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
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22
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Zalitis C, Kucernak A, Lin X, Sharman J. Electrochemical Measurement of Intrinsic Oxygen Reduction Reaction Activity at High Current Densities as a Function of Particle Size for Pt4–xCox/C (x = 0, 1, 3) Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04750] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Christopher Zalitis
- Johnson Matthey Technical Centre, Blounts Court, Sonning Common, Reading RG4 9NH, United Kingdom
| | - Anthony Kucernak
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Xiaoqian Lin
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Jonathan Sharman
- Johnson Matthey Technical Centre, Blounts Court, Sonning Common, Reading RG4 9NH, United Kingdom
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23
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Moriau LJ, Bele M, Vižintin A, Ruiz-Zepeda F, Petek U, Jovanovič P, Šala M, Gaberšček M, Hodnik N. Synthesis and Advanced Electrochemical Characterization of Multifunctional Electrocatalytic Composite for Unitized Regenerative Fuel Cell. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03385] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Léonard Jean Moriau
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- Jozef Stefan International Postgraduate School, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Marjan Bele
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Alen Vižintin
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Francisco Ruiz-Zepeda
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- Department of Physics and Chemistry of Materials, Institute of Metals and Technology, Lepi pot 11, SI-1000 Ljubljana, Slovenia
| | - Urša Petek
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Primož Jovanovič
- Department of Catalysis and Chemical Reaction Engineering, 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
| | - Miran Gaberšček
- Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Nejc Hodnik
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
- Jozef Stefan International Postgraduate School, Jamova 39, SI-1000, Ljubljana, Slovenia
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24
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25
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Tiwari C, Sharma V, Jha PK, Pratap A. Effect of aqueous medium on low -frequency dynamics, chemical activity and physical properties of a spherical virus. J Biomol Struct Dyn 2019; 38:2207-2214. [PMID: 31179877 DOI: 10.1080/07391102.2019.1626286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this work, we have studied the effect of size and aqueous medium on the low-frequency dynamics, physical properties like melting temperature and glass transition temperature and chemical properties like catalytic activation energy of spherical virus using Lindemann's criteria and Arrhenius relation under their dynamic limit. The melting temperature and catalytic activation energy decrease with decreasing size of spherical virus. The glass transition temperature which increases with decreasing size of the virus is analyzed through the size dependent melting temperature. The melting temperature and catalytic activation energy of spherical virus of particular size increases when it is embedded in glycerol or water due to mismatch of the physical properties at the interface of virus and surrounding medium. In addition, the glass transition temperature of free and glycerol/water embedded virus using low-frequency vibrational modes has been calculated under the framework of elastic continuum approximation model. The glass transition temperature of spherical virus decreases with size when embedded in glycerol or water. A correlation between [Formula: see text] and [Formula: see text] is also drawn for spherical viruses. The study can be useful for spherical virus borne therapy i.e. in detecting and killing of the spherical viruses using a principle based on acoustic phonons (sound waves) resonance.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Chetna Tiwari
- Department of Applied Physics, Faculty of Technology and Engineering, The M. S. University of Baroda, Vadodara, India.,Department of Physics, Faculty of Science, The M.S. University of Baroda, Vadodara, India
| | - Vaishali Sharma
- Department of Physics, Faculty of Science, The M.S. University of Baroda, Vadodara, India
| | - Prafulla K Jha
- Department of Physics, Faculty of Science, The M.S. University of Baroda, Vadodara, India
| | - Arun Pratap
- Department of Applied Physics, Faculty of Technology and Engineering, The M. S. University of Baroda, Vadodara, India
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26
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Xu M, Zhang Y, Wang K, Mao J, Ji W, Qiu W, Feng T, Zhang M, Mao L. Nanoskiving fabrication of size-controlled Au nanowire electrodes for electroanalysis. Analyst 2019; 144:2914-2921. [PMID: 30912775 DOI: 10.1039/c9an00122k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nanoskiving, benefiting from its simple operation and high reproducibility, is a promising method to fabricate nanometer-size electrodes. In this work, we report the fabrication of Au nanowire electrodes with different shapes and well-controlled sizes through nanoskiving. Au nanowire block electrodes, membrane electrodes and tip electrodes are prepared with good reproducibility. Steady-state cyclic voltammograms (CVs) demonstrate that all these electrodes behave well as nanoband ultramicroelectrodes. A fast heterogeneous electron transfer rate constant can be extracted reliably from steady-state CVs at various size Au nanowire block electrodes by the Koutecký-Levich (K-L) method. The Au nanowire membrane electrodes demonstrate good sensitivity toward the oxidation of catecholamine and could monitor catecholamine released from rat adrenal chromaffin cells stimulated by high K+.
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Affiliation(s)
- Muzhen Xu
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Yue Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Kai Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China
| | - Jinpeng Mao
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Wenliang Ji
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Wanling Qiu
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Taotao Feng
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Meining Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, China.
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China
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27
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Wang H, Abruña HD. Rh and Rh Alloy Nanoparticles as Highly Active H2 Oxidation Catalysts for Alkaline Fuel Cells. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00906] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hongsen Wang
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Héctor D. Abruña
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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28
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Gómez-Marín AM, Feliu JM, Ticianelli E. Oxygen Reduction on Platinum Surfaces in Acid Media: Experimental Evidence of a CECE/DISP Initial Reaction Path. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03351] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana M. Gómez-Marín
- Instituto de Química de São Carlos, Universidade de São Paulo, Caixa
Postal 780, Fisico Quimica, Av. Trabalhador Sao Carlense, São Carlos CEP 13560-970, SP, Brazil
- Department of Chemistry, Division of Fundamental Sciences (IEF), Technological Institute of Aeronautics (ITA), São José dos Campos CEP 12228-900, SP, Brazil
| | - Juan M. Feliu
- Instituto de Electroquímica, Universidad de Alicante, Apt 99, E-03080 Alicante, Spain
| | - Edson Ticianelli
- Instituto de Química de São Carlos, Universidade de São Paulo, Caixa
Postal 780, Fisico Quimica, Av. Trabalhador Sao Carlense, São Carlos CEP 13560-970, SP, Brazil
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29
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Moon S, Cho YB, Yu A, Kim MH, Lee C, Lee Y. Single-Step Electrospun Ir/IrO 2 Nanofibrous Structures Decorated with Au Nanoparticles for Highly Catalytic Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1979-1987. [PMID: 30582793 DOI: 10.1021/acsami.8b14563] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanocomposites of gold (Au) and iridium (Ir) oxide with various compositions (denoted as Au xIr1- xO y, x = 0.05, 0.10, or 0.33, Au precursor molar ratio to Ir precursor) were synthesized via electrospinning and subsequent calcination method with two different solvent composition ratios of ethanol to N, N-dimethylformamide (DMF) in the electrospinning solution (ethanol/DMF = 70:30 or 50:50% v/v). Simple single-step electrospinning successfully fabricated a hierarchical nanostructure having Au nanoparticles formed on fibrous main frames of Ir/IrO2. Different solvent composition in the electrospinning solution induced the formation of main frames with distinct nanostructures; nanoribbons (Au xIr1- xO y-70) with ethanol/DMF = 70:30; and nanofibers (Au xIr1- xO y-50) with ethanol/DMF = 50:50. The pure Ir or Au counterparts (IrO y and Au) were also prepared by the same synthetic procedure as Au xIr1- xO y. Oxygen evolution reaction (OER) activities of as-synthesized Au xIr1- xO y were investigated in 0.5 M H2SO4 and compared to those of IrO y, Au, and commercial iridium (Ir/C, 20% Ir loading on Vulcan carbon). Among them, Au0.10Ir0.90O y-50 exhibited the best OER activity, even better than previously reported catalysts containing both Ir and Au. The high OER activity of Au0.10Ir0.90O y-50 was mainly attributed to the fiber frame structure and the optimal interfacial areas between Au and Ir/IrO2, which are electrophilic OER active sites. The stability of Au0.10Ir0.90O y-50 was also evaluated to be much higher than that of Ir/C during OER. The current study suggests that the presence of Au on the Ir/IrO2 surface improves the OER activity of Ir/IrO2.
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Affiliation(s)
- Sinyoung Moon
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul , 03760 , Korea
| | - Yun-Bin Cho
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul , 03760 , Korea
| | - Areum Yu
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul , 03760 , Korea
| | - Myung Hwa Kim
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul , 03760 , Korea
| | - Chongmok Lee
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul , 03760 , Korea
| | - Youngmi Lee
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul , 03760 , Korea
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30
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Ortiz-Ledón CA, Zoski CG. Fabrication of Glass-Insulated Ultramicrometer to Submicrometer Carbon Fiber Electrodes to Support a Single Nanoparticle and Nanoparticle Ensembles in Electrocatalytic Investigations. Anal Chem 2018; 90:12616-12624. [DOI: 10.1021/acs.analchem.8b02785] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- César A. Ortiz-Ledón
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Cynthia G. Zoski
- Center for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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31
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Saha P, Hill JW, Walmsley JD, Hill CM. Probing Electrocatalysis at Individual Au Nanorods via Correlated Optical and Electrochemical Measurements. Anal Chem 2018; 90:12832-12839. [DOI: 10.1021/acs.analchem.8b03360] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Partha Saha
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Joshua W. Hill
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Joshua D. Walmsley
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States
| | - Caleb M. Hill
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States
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32
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Gómez-Marín A, Feliu J, Edson T. Reaction Mechanism for Oxygen Reduction on Platinum: Existence of a Fast Initial Chemical Step and a Soluble Species Different from H2O2. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01291] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ana Gómez-Marín
- Instituto de Química de São Carlos, Universidade de São Paulo, Caixa Postal 780, Fisico Quimica, Av. Trabalhador Sao Carlense, São Carlos CEP 13560-970, São Paulo, Brazil
- Department of Chemistry, Division of Fundamental Sciences (IEF), Technological Institute of Aeronautics (ITA), 12228-900 São Paulo, Brazil
| | - Juan Feliu
- Instituto de Electroquímica, Universidad de Alicante, Apt 99, E-03080 Alicante, Spain
| | - Ticianelli Edson
- Instituto de Química de São Carlos, Universidade de São Paulo, Caixa Postal 780, Fisico Quimica, Av. Trabalhador Sao Carlense, São Carlos CEP 13560-970, São Paulo, Brazil
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33
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Wang Y, Shan X, Tao N. Emerging tools for studying single entity electrochemistry. Faraday Discuss 2018; 193:9-39. [PMID: 27722354 DOI: 10.1039/c6fd00180g] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Electrochemistry studies charge transfer and related processes at various microscopic structures (atomic steps, islands, pits and kinks on electrodes), and mesoscopic materials (nanoparticles, nanowires, viruses, vesicles and cells) made by nature and humans, involving ions and molecules. The traditional approach measures averaged electrochemical quantities of a large ensemble of these individual entities, including the microstructures, mesoscopic materials, ions and molecules. There is a need to develop tools to study single entities because a real system is usually heterogeneous, e.g., containing nanoparticles with different sizes and shapes. Even in the case of "homogeneous" molecules, they bind to different microscopic structures of an electrode, assume different conformations and fluctuate over time, leading to heterogeneous reactions. Here we highlight some emerging tools for studying single entity electrochemistry, discuss their strengths and weaknesses, and provide personal views on the need for tools with new capabilities for further advancing single entity electrochemistry.
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Affiliation(s)
- Yixian Wang
- Center for Biosensors and Bioelectronics, Biodesign Institute and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA.
| | - Xiaonan Shan
- Center for Biosensors and Bioelectronics, Biodesign Institute and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA.
| | - Nongjian Tao
- Center for Biosensors and Bioelectronics, Biodesign Institute and School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA. and State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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34
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Ustarroz J, Ornelas IM, Zhang G, Perry D, Kang M, Bentley CL, Walker M, Unwin PR. Mobility and Poisoning of Mass-Selected Platinum Nanoclusters during the Oxygen Reduction Reaction. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00553] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jon Ustarroz
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- Research Group Electrochemical and Surface Engineering (SURF), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Isabel M. Ornelas
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- Nanoscale Physics, Chemistry and Engineering Research Laboratory, University of Birmingham, Birmingham B15 2TT, U.K
| | - Guohui Zhang
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - David Perry
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Minkyung Kang
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | | | - Marc Walker
- Department of Physics, University of Warwick, Coventry CV4 7AL, U.K
| | - Patrick R. Unwin
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
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35
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Davydova ES, Mukerjee S, Jaouen F, Dekel DR. Electrocatalysts for Hydrogen Oxidation Reaction in Alkaline Electrolytes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00689] [Citation(s) in RCA: 211] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Elena S. Davydova
- The Wolfson Department of Chemical Engineering and the Nancy & Stephan Grand Technion Energy Program (GTEP), Technion − Israel Institute of Technology, Haifa 3200003, Israel
| | - Sanjeev Mukerjee
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - Frédéric Jaouen
- Institut Charles
Gerhardt Montpellier, UMR 5253, CNRS, Université Montpellier,
ENSCM, 34095 Montpellier, France
| | - Dario R. Dekel
- The Wolfson Department of Chemical Engineering and the Nancy & Stephan Grand Technion Energy Program (GTEP), Technion − Israel Institute of Technology, Haifa 3200003, Israel
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36
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37
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Yang S, Verdaguer-Casadevall A, Arnarson L, Silvioli L, Čolić V, Frydendal R, Rossmeisl J, Chorkendorff I, Stephens IEL. Toward the Decentralized Electrochemical Production of H2O2: A Focus on the Catalysis. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00217] [Citation(s) in RCA: 406] [Impact Index Per Article: 67.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sungeun Yang
- Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark
| | | | - Logi Arnarson
- Nano-Science Center, Department of Chemistry, University of Copenhagen, Copenhagen Ø DK-2100, Denmark
| | - Luca Silvioli
- Nano-Science Center, Department of Chemistry, University of Copenhagen, Copenhagen Ø DK-2100, Denmark
| | - Viktor Čolić
- Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark
| | | | - Jan Rossmeisl
- Nano-Science Center, Department of Chemistry, University of Copenhagen, Copenhagen Ø DK-2100, Denmark
| | - Ib Chorkendorff
- Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark
| | - Ifan E. L. Stephens
- Section for Surface Physics and Catalysis, Department of Physics, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark
- Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom
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38
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Öhl D, Clausmeyer J, Barwe S, Botz A, Schuhmann W. Oxygen Reduction Activity and Reversible Deactivation of Single Silver Nanoparticles during Particle Adsorption Events. ChemElectroChem 2018. [DOI: 10.1002/celc.201800094] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Denis Öhl
- Analytical Chemistry - Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Jan Clausmeyer
- Analytical Chemistry - Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Stefan Barwe
- Analytical Chemistry - Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Alexander Botz
- Analytical Chemistry - Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry - Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
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39
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Huang K, Clausmeyer J, Luo L, Jarvis K, Crooks RM. Shape-controlled electrodeposition of single Pt nanocrystals onto carbon nanoelectrodes. Faraday Discuss 2018; 210:267-280. [DOI: 10.1039/c8fd00018b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we report the electrosynthesis and characterization of individual, shape-controlled Pt nanocrystals electrodeposited on carbon nanoelectrodes.
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Affiliation(s)
- Ke Huang
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Jan Clausmeyer
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Long Luo
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Karalee Jarvis
- Texas Materials Institute
- The University of Texas at Austin
- Austin
- USA
| | - Richard M. Crooks
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
- Texas Materials Institute
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40
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Zana A, Wiberg GKH, Deng YJ, Østergaard T, Rossmeisl J, Arenz M. Accessing the Inaccessible: Analyzing the Oxygen Reduction Reaction in the Diffusion Limit. ACS APPLIED MATERIALS & INTERFACES 2017; 9:38176-38180. [PMID: 29063766 DOI: 10.1021/acsami.7b13902] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The oxygen reduction reaction (ORR) is one of the key processes in electrocatalysis. In this communication, the ORR is studied using a rotating disk electrode (RDE). In conventional work, this method limits the potential region where kinetic (mass transport free) reaction rates can be determined to a narrow range. Here, we applied a new approach, which allows us to analyze the ORR rates in the diffusion-limited potential region of high mass transport. Thus, for the first time, the effect of anion adsorption on the ORR can be studied at such potentials.
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Affiliation(s)
- Alessandro Zana
- Nano-Science Center, Department of Chemistry, University of Copenhagen , Copenhagen 1165, Denmark
- Department of Chemistry and Biochemistry, University of Bern , Bern 3012, Switzerland
| | - Gustav K H Wiberg
- Nano-Science Center, Department of Chemistry, University of Copenhagen , Copenhagen 1165, Denmark
- Department of Chemistry and Biochemistry, University of Bern , Bern 3012, Switzerland
| | - Yu-Jia Deng
- Nano-Science Center, Department of Chemistry, University of Copenhagen , Copenhagen 1165, Denmark
- School of Chemistry and Chemical Engineering, Qingdao University , Qingdao 266000, China
| | - Thomas Østergaard
- Nano-Science Center, Department of Chemistry, University of Copenhagen , Copenhagen 1165, Denmark
| | - Jan Rossmeisl
- Nano-Science Center, Department of Chemistry, University of Copenhagen , Copenhagen 1165, Denmark
| | - Matthias Arenz
- Nano-Science Center, Department of Chemistry, University of Copenhagen , Copenhagen 1165, Denmark
- Department of Chemistry and Biochemistry, University of Bern , Bern 3012, Switzerland
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41
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Mohanraju K, Kirankumar P, Cindrella L, Kwon OJ. Enhanced electrocatalytic activity of Pt decorated spinals (M 3 O 4 , M = Mn, Fe, Co)/C for oxygen reduction reaction in PEM fuel cell and their evaluation by hydrodynamic techniques. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Wang H, Abruña HD. IrPdRu/C as H 2 Oxidation Catalysts for Alkaline Fuel Cells. J Am Chem Soc 2017; 139:6807-6810. [PMID: 28460520 DOI: 10.1021/jacs.7b02434] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
H2 oxidation kinetics on Pt in alkaline media are very sluggish, being over 100 times slower than in acidic media, and thus, new and more active H2 oxidation electrocatalysts must be developed in order to enable alkaline exchange membrane fuel cells (AEMFCs). In this Communication, we present a new type of catalysts-carbon-supported IrPdRu nanoparticles-as H2 oxidation catalysts in alkaline media. These catalysts exhibit higher activity than Pt/C and Ir/C catalysts and are also quite stable. In particular, Ir3Ru7/C and Ir3Pd1Ru6/C catalysts are significantly more active and less expensive than Pt/C and Ir/C, and are thus promising new anode catalysts for alkaline fuel cell applications.
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Affiliation(s)
- Hongsen Wang
- Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853-1301, United States
| | - Héctor D Abruña
- Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853-1301, United States
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43
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Ying YL, Ding Z, Zhan D, Long YT. Advanced electroanalytical chemistry at nanoelectrodes. Chem Sci 2017; 8:3338-3348. [PMID: 28507703 PMCID: PMC5416909 DOI: 10.1039/c7sc00433h] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 02/16/2017] [Indexed: 01/10/2023] Open
Abstract
Nanoelectrodes, with dimensions below 100 nm, have the advantages of high sensitivity and high spatial resolution. These electrodes have attracted increasing attention in various fields such as single cell analysis, single-molecule detection, single particle characterization and high-resolution imaging. The rapid growth of novel nanoelectrodes and nanoelectrochemical methods brings enormous new opportunities in the field. In this perspective, we discuss the challenges, advances, and opportunities for nanoelectrode fabrication, real-time characterizations and high-performance electrochemical instrumentation.
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Affiliation(s)
- Yi-Lun Ying
- School of Chemistry & Molecular Engineering , East China University of Science and Technology , Shanghai , 200237 , P. R. China .
| | - Zhifeng Ding
- Department of Chemistry , University of Western Ontario , 1151 Richmond Street , London , ON N6A 5B7 , Canada
| | - Dongping Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM) , Department of Chemistry , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , 361005 , P. R. China
| | - Yi-Tao Long
- School of Chemistry & Molecular Engineering , East China University of Science and Technology , Shanghai , 200237 , P. R. China .
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44
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Zhang Y, Xu S, Xiao X, Liu Y, Qian Y, Li Y. Single gold nanowire electrodes and single Pt@Au nanowire electrodes: electrochemistry and applications. Chem Commun (Camb) 2017; 53:2850-2853. [DOI: 10.1039/c6cc09854a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Single Au nanowire electrodes and single Pt@Au nanowire electrodes have been prepared and used to investigate electrochemical properties, fabricate an E-DNA sensor and study the oxygen reduction reaction.
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Affiliation(s)
- Yaoyao Zhang
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Shen Xu
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Xiaoqing Xiao
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Yong Liu
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Yuanyuan Qian
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu
- P. R. China
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Abstract
Metal nanoparticles are key electrode materials in a variety of electrochemical applications including basic electron-transfer study, electrochemical sensing, and electrochemical surface enhanced Raman spectroscopy (SERS). Metal nanoparticles have also been extensively applied to electrocatalytic processes in recent years due to their high catalytic activity and large surface areas. Because the catalytic activity of metal nanoparticle is often highly dependent on their size, shape, surface ligands, and so forth, methods for examining and better understanding the correlation between particle structure and function are of great utility in the development of more efficient catalytic systems. Despite considerable progress in this field, the understanding of the structure-activity relationships remains challenging in nanoparticle-based electrochemistry and electrocatalysis due to limitations associated with traditional ensemble measurements. One of the major issues is the ensemble averaging of the electrocatalytic response which occurs over a very large number of nanoparticles of various sizes and shapes. Additionally, the electrochemical response can also be greatly affected by properties of the ensemble itself, such as the particle spacing. The ability to directly measure kinetics of electrochemical reactions at structurally well-characterized single nanoparticles opens up new possibilities in many important areas including nanoscale electrochemistry, electrochemical sensing, and nanoparticle electrocatalysis. When a macroscopic electrode is placed in a solution containing redox molecules and metal nanoparticles, random collision and adsorption of nanoparticles occurs at the electrode surface in addition to redox reactions when a suitable potential is present on the electrode. In a special case where particles are catalytically more active than the substrate, the faradaic signals can be greatly amplified on particle surfaces and a steady shift in the baseline current would be expected due to many particles adsorbing on the electrode. Single particle events can be temporally resolved when an ultramicroelectrode (UME) is used as the recording electrode. The use of an UME not only reduces the collision frequency, but also greatly decreases baseline noise, thereby resulting in clear resolution of single collision events. Single particle collision has quickly grown into a popular electroanalytical technique in recent years. Alternatively, one can use nanoelectrodes to immobilize single nanoparticles so that they can be individually studied in electrochemistry and electrocatalysis. Nanoparticle immobilization also allows one to obtain detailed structural information on the same particles and offers enormous potential for developing more comprehensive understanding of the structure-function relationship in nanoparticle-based electrocatalysts. This Account summarizes recent electrochemical experiments of single metal nanoparticles which have been performed by our group using both of these schemes.
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Affiliation(s)
- Todd J. Anderson
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Bo Zhang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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46
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Theoretical study of the interaction between molecular oxygen and tetraaza macrocyclic manganese complexes. J Mol Model 2016; 22:217. [DOI: 10.1007/s00894-016-3097-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/08/2016] [Indexed: 11/26/2022]
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47
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On the oxygen reduction reaction in phosphoric acid electrolyte: Evidence of significantly increased inhibition at steady state conditions. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.04.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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48
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Nanoelectrodes: Applications in electrocatalysis, single-cell analysis and high-resolution electrochemical imaging. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.01.018] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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49
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Sub-particle reaction and photocurrent mapping to optimize catalyst-modified photoanodes. Nature 2016; 530:77-80. [DOI: 10.1038/nature16534] [Citation(s) in RCA: 251] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/07/2015] [Indexed: 12/18/2022]
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50
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Kim J, Bard AJ. Application of the Koutecký-Levich Method to the Analysis of Steady State Voltammograms with Ultramicroelectrodes. Anal Chem 2016; 88:1742-7. [DOI: 10.1021/acs.analchem.5b03965] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jiyeon Kim
- Center
for Electrochemistry,
Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Allen J. Bard
- Center
for Electrochemistry,
Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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