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Sun C, Zhou X, Liu C, Deng S, Song Y, Yang J, Dai J, Ju Y. An Integrated Therapeutic and Preventive Nanozyme-Based Microneedle for Biofilm-Infected Diabetic Wound Healing. Adv Healthc Mater 2023; 12:e2301474. [PMID: 37479531 DOI: 10.1002/adhm.202301474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/28/2023] [Indexed: 07/23/2023]
Abstract
The healing of biofilm-infected diabetic wounds characterized by a deteriorative tissue microenvironment represents a substantial clinical challenge. Current treatments remain unsatisfactory due to the limited antibiofilm efficacy caused by weak tissue and biofilm permeability of drugs and the risk of reinfection during the healing process. To address these issues, an integrated therapeutic and preventive nanozyme-based microneedle (denoted as Fe2 C/GOx@MNs) is engineered. The dissolvable tips with enough mechanical strength can deliver and rapidly release Fe2 C nanoparticles (NPs)/glucose oxidase (GOx) in the biofilm active regions, enhancing tissue and biofilm permeability of Fe2 C NPs/GOx, ultimately achieving highly efficient biofilm elimination. Meanwhile, the chitosan backing layer can not only act as an excellent physical barrier between the wound bed and the external environment, but also prevent the bacterial reinvasion during wound healing with its superior antibacterial property. Significantly, the biofilm elimination and reinfection prevention abilities of Fe2 C/GOx@MNs on wound healing are proved on methicillin-resistant Staphylococcus aureus-biofilm-infected diabetic mouse model with full-thickness wound. Together, these results demonstrate the promising clinical application of Fe2 C/GOx@MNs in biofilm-infected wound healing.
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Affiliation(s)
- Caixia Sun
- College of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xinyu Zhou
- College of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Cong Liu
- College of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Shuyue Deng
- College of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Yuhan Song
- Nanjing Institute for Food and Drug Control, Nanjing, 210038, China
| | - Jun Yang
- Nanjing Institute for Food and Drug Control, Nanjing, 210038, China
| | - Jianjun Dai
- College of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Bacteriology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yanmin Ju
- College of Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
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2
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Ge M, Li H, Zhu X, Feng Y, Wang M, Cui D, Yang H, Li S, Zheng J, Ju J, Chen X, Yuan X. Confinement Effects in Carbonized ZIF-Confined Hollow PtCo Nanospheres Enable the Methanol Oxidation Reaction. Inorg Chem 2023; 62:16582-16588. [PMID: 37751364 DOI: 10.1021/acs.inorgchem.3c02519] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Confinement effects in highly porous nanostructures can effectively adjust the selectivity and kinetics of electrochemical reactions, which can boost the methanol oxidation reaction (MOR). In this work, carbonized ZIF-8-confined hollow PtCo nanospheres (PtCo@carbonized ZIF-8) were fabricated using a facile strategy. A monodisperse confined region was successfully prepared, and the dispersion of the PtCo nanoparticles (NPs) could be precisely regulated, allowing for the effective tuning of the confined region. Thus, the precise regulation of the catalytic reaction was achieved. Importantly, hollow PtCo NPs were prepared using a method based on the Kirkendall effect, and their forming mechanism was systematically investigated. Because of the confinement effects of carbonized zeolitic imidazolate framework-8 (ZIF-8), the crystal and electronic structures of the PtCo NPs were able to be effectively tuned. Our electrochemical results show that PtCo@carbonized ZIF-8 composites manifest a higher mass activity (1.4 A mgPt-1) and better stability compared to commercial Pt/C.
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Affiliation(s)
- Ming Ge
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Han Li
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Xiaorong Zhu
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Yanjun Feng
- Shanghai Institute of Satellite Engineering, 3666 Yuanjiang Road, Shanghai 201109, P.R. China
| | - Miao Wang
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Ding Cui
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Hu Yang
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Shengming Li
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Jie Zheng
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Jianfeng Ju
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Xiaolei Chen
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
| | - Xiaolei Yuan
- School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, Jiangsu 226019, P.R. China
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3
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Yang TT, Saidi WA. Simple Approach for Reconciling Cyclic Voltammetry with Hydrogen Adsorption Energy for Hydrogen Evolution Exchange Current. J Phys Chem Lett 2023; 14:4164-4171. [PMID: 37104751 DOI: 10.1021/acs.jpclett.3c00534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Cyclic voltammetry (CV) is a standard technique to analyze the current-potential characteristics of the hydrogen evolution reaction (HER). Herein, we develop a computational quantum-scaled CV model for the HER building on the Butler-Volmer relation for a one-step, one-charge transfer process. Owing to a universal and absolute rate constant verified by fitting to experimental cyclic voltammograms of elemental metals, we show that the model quantifies the exchange current─the main analytical descriptor for HER activity─solely using the hydrogen adsorption free energy obtained from density functional theory calculations. Furthermore, the model resolves controversies over analytical studies for HER kinetics.
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Affiliation(s)
- Timothy T Yang
- Department of Materials Science and Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Wissam A Saidi
- Department of Materials Science and Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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4
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Kurapati N, Janda DC, Balla RJ, Huang SH, Leonard KC, Amemiya S. Nanogap-Resolved Adsorption-Coupled Electron Transfer by Scanning Electrochemical Microscopy: Implications for Electrocatalysis. Anal Chem 2022; 94:17956-17963. [PMID: 36512745 DOI: 10.1021/acs.analchem.2c04008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Here, we demonstrate for the first time that the mechanism of adsorption-coupled electron-transfer (ACET) reactions can be identified experimentally. The electron transfer (ET) and specific adsorption of redox-active molecules are coupled in many electrode reactions with practical importance and fundamental interest. ACET reactions are often represented by a concerted mechanism. In reductive adsorption, an oxidant is simultaneously reduced and adsorbed as a reductant on the electrode surface through the ACET step. Alternatively, the non-concerted mechanism mediates outer-sphere reduction and adsorption separately when the reductant adsorption is reversible. In electrocatalysis, reversibly adsorbed reductants are ubiquitous and crucial intermediates. Moreover, electrocatalysis is complicated by the mixed mechanism based on simultaneous ACET and outer-sphere ET steps. In this work, we reveal the non-concerted mechanism for ferrocene derivatives adsorbed at highly oriented pyrolytic graphite as simple models. We enable the transient voltammetric mode of nanoscale scanning electrochemical microscopy (SECM) to kinetically control the adsorption step, which is required for the discrimination of non-concerted, concerted, and mixed mechanisms. Experimental voltammograms are compared with each mechanism by employing finite element simulation. The non-concerted mechanism is supported to indicate that the ACET step is intrinsically slower than its outer-sphere counterpart by at least four orders of magnitude. This finding implies that an ACET step is facilitated thermodynamically but may not be necessarily accelerated or catalyzed by the adsorption of the reductant. SECM-based transient voltammetry will become a powerful tool to resolve and understand electrocatalytic ACET reactions at the elementary level.
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Affiliation(s)
- Niraja Kurapati
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Donald C Janda
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Ryan J Balla
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Siao-Han Huang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Kevin C Leonard
- Center for Environmentally Beneficial Catalysis, Department of Chemical and Petroleum Engineering, University of Kansas, 1501 Wakarusa Drive, Lawrence, Kansas 66047, United States
| | - Shigeru Amemiya
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
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5
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Ge R, Huo J, Sun M, Zhu M, Li Y, Chou S, Li W. Surface and Interface Engineering: Molybdenum Carbide-Based Nanomaterials for Electrochemical Energy Conversion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e1903380. [PMID: 31532899 DOI: 10.1002/smll.201903380] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/31/2019] [Indexed: 06/10/2023]
Abstract
Molybdenum carbide (Mox C)-based nanomaterials have shown competitive performances for energy conversion applications based on their unique physicochemical properties. A large surface area and proper surface atomic configuration are essential to explore potentiality of Mox C in electrochemical applications. Although considerable efforts are made on the development of advanced Mox C-based catalysts for energy conversion with high efficiency and stability, some urgent issues, such as low electronic conductivity, low catalytic efficiency, and structural instability, have to be resolved in accordance with their application environments. Surface and interface engineering have shown bright prospects to construct highly efficient Mox C-based electrocatalysts for energy conversion including the hydrogen evolution reaction, oxygen evolution reaction, nitrogen reduction reaction, and carbon dioxide reduction reaction. In this Review, the recent progresses in terms of surface and interface engineering of Mox C-based electrocatalytic materials are summarized, including the increased number of active sites by decreasing the particle size or introducing porous or hierarchical structures and surface modification by introducing heteroatom(s), defects, carbon materials, and others electronic conductive species. Finally, the challenges and prospects for energy conversion on Mox C-based nanomaterials are discussed in terms of key performance parameters for the catalytic performance.
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Affiliation(s)
- Riyue Ge
- Institute of Materials, School of Materials Science and Engineering/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China
| | - Juanjuan Huo
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Mingjie Sun
- Institute of Materials, School of Materials Science and Engineering/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China
| | - Mingyuan Zhu
- Institute of Materials, School of Materials Science and Engineering/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China
| | - Ying Li
- Institute of Materials, School of Materials Science and Engineering/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China
| | - Shulei Chou
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, North Wollongong, New South Wales, 2522, Australia
| | - Wenxian Li
- Institute of Materials, School of Materials Science and Engineering/Institute for Sustainable Energy, Shanghai University, Shanghai, 200444, China
- Shanghai Key Laboratory of High Temperature Superconductors, Shanghai, 200444, China
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6
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Yang AN, Lin JT, Li CT. Electroactive and Sustainable Cu-MOF/PEDOT Composite Electrocatalysts for Multiple Redox Mediators and for High-Performance Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8435-8444. [PMID: 33570924 DOI: 10.1021/acsami.0c21542] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An electrically conductive Cu-MOF, {[Cu2(6-mercaptonicotinic acid)(6-mercaptonicotinate)]·NH4}n, was successfully electrodeposited on the conductive substrates via using poly(3,4-ethylenedioxythiophene) (PEDOT) as the binder. Multiple functionalities of the Cu-MOF microparticle within the Cu-MOF/PEDOT composite electrode were systematically vindicated as (1) releasing the cohesive strength among the PEDOT matrix, thus enhancing the film adhesion to substrate, (2) providing excellent intrinsic heterogeneous rate constant via lowering the reaction active energy, (3) supplying numerous active sites at the center or edges on its (-Cu-S-)n honeycomb-like planes, (4) facilitating the electron transfer through its two-dimensional (-Cu-S-)n plains, and (5) benefiting the penetration of the redox mediators through its porous frameworks. In multiple redox mediators (i.e., I-/I3-, cobalt(II/III)-complex, and copper(I/II)-complex), the composite Cu-MOF/PEDOT electrode exhibited superior electrocatalyst activity and kept almost 100% of its initial redox peak currents after continuous cyclic voltammetric scanning for 300 cycles. As a high-performance electrocatalyst for the counter electrode in dye-sensitized solar cells (DSSCs), the composite Cu-MOF/PEDOT electrode rendered its cell a decent solar-to-electricity conversion efficiency of up to 9.45% at 1 sun and 22.80% at room light illumination. Compared to the traditional platinum electrode (7.67%), the low-cost Cu-MOF/PEDOT composite electrode has great possibility to be used for various electrochemical devices and the Internet-of-things applications.
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Affiliation(s)
- Ai-Nin Yang
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Jiann T Lin
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Chun-Ting Li
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
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7
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Moradi M, Azizi‐Lalabadi M, Motamedi P, Sadeghi E. Electrochemical determination of T 2 toxin by graphite/polyacrylonitrile nanofiber electrode. Food Sci Nutr 2021; 9:1171-1179. [PMID: 33598201 PMCID: PMC7866594 DOI: 10.1002/fsn3.2097] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/26/2020] [Accepted: 12/18/2020] [Indexed: 01/20/2023] Open
Abstract
Fabricating graphite electrode corrected with nanofiber by electrospinning as a considerable procedure for utilization in the fluid materials, milk, and syrup for detection of T2 mycotoxin is a significant technique. The modern biosensor was fabricated at normal degrees of room and utilized via buffer Britton-Robinson (B-R) in pH = 5 to refine the chemico-mechanical specifications. The electrochemical manner of the modified surface was surveyed using the scanning electron microscopy (SEM), cyclic voltammetry (CV), square wave voltammetry (SQWV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). The corrected electrode displayed a linear reply to T2 toxin in two distinct concentration ranges of 30-100 nM with correlation coefficients of 0.99. The greatest signals in the square wave spectrums for the B-R buffer created on the uttermost signals of the obtained streams were pH = 5 and 0.5 M of KNO3 for T2 toxin. The modified electrode has a big signal, broad dynamic concentration and high sensitivity and selectivity.
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Affiliation(s)
- Mona Moradi
- Department of Chemical Engineering‐ Food SciencesKermanshah Science and Research BranchIslamic Azad UniversityKermanshahIran
| | - Maryam Azizi‐Lalabadi
- Research Center for Environmental Determinants of Health (RCEDH)Kermanshah University of Medical SciencesKermanshahIran
| | - Parisa Motamedi
- Research Center for Environmental Determinants of Health (RCEDH)Kermanshah University of Medical SciencesKermanshahIran
| | - Ehsan Sadeghi
- Research Center for Environmental Determinants of Health (RCEDH)Kermanshah University of Medical SciencesKermanshahIran
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8
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Shi T, Hou X, Guo S, Zhang L, Wei C, Peng T, Hu X. Nanohole-boosted electron transport between nanomaterials and bacteria as a concept for nano-bio interactions. Nat Commun 2021; 12:493. [PMID: 33479209 PMCID: PMC7820612 DOI: 10.1038/s41467-020-20547-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/30/2020] [Indexed: 12/30/2022] Open
Abstract
Biofilms contribute to bacterial infection and drug resistance and are a serious threat to global human health. Antibacterial nanomaterials have attracted considerable attention, but the inhibition of biofilms remains a major challenge. Herein, we propose a nanohole-boosted electron transport (NBET) antibiofilm concept. Unlike known antibacterial mechanisms (e.g., reactive oxygen species production and cell membrane damage), nanoholes with atomic vacancies and biofilms serve as electronic donors and receptors, respectively, and thus boost the high electron transport capacity between nanomaterials and biofilms. Electron transport effectively destroys the critical components (proteins, intercellularly adhered polysaccharides and extracellular DNA) of biofilms, and the nanoholes also significantly downregulate the expression of genes related to biofilm formation. The anti-infection capacity is thoroughly verified both in vitro (human cells) and in vivo (rat ocular and mouse intestinal infection models), and the nanohole-enabled nanomaterials are found to be highly biocompatible. Importantly, compared with typical antibiotics, nanomaterials are nonresistant and thereby exhibit high potential for use in various applications. As a proof-of-principle demonstration, these findings hold promise for the use of NBET in treatments for pathogenic bacterial infection and antibiotic drug resistance.
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Affiliation(s)
- Tonglei Shi
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China
| | - Xuan Hou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China
| | - Shuqing Guo
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China
| | - Lei Zhang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China
| | - Changhong Wei
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China
| | - Ting Peng
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350, Tianjin, China.
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9
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Lyons ME. Understanding the kinetics of catalysed reactions in microheterogeneous thin film electrodes. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Moradi S, Azizi-Lalabadi M, Bagheri V, Sadeghi E. Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant. SENSING AND BIO-SENSING RESEARCH 2020. [DOI: 10.1016/j.sbsr.2020.100321] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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11
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Transport and kinetics in electrocatalytic thin film biosensors: bounded diffusion with non-Michaelis-Menten reaction kinetics. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04576-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Singh B, Indra A. Designing Self‐Supported Metal‐Organic Framework Derived Catalysts for Electrochemical Water Splitting. Chem Asian J 2020; 15:607-623. [DOI: 10.1002/asia.201901810] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/30/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Baghendra Singh
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi Uttar Pradesh 221005 India
| | - Arindam Indra
- Department of ChemistryIndian Institute of Technology (BHU) Varanasi Uttar Pradesh 221005 India
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13
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Vaddi K, Wodo O. Metric Learning for High-Throughput Combinatorial Data Sets. ACS COMBINATORIAL SCIENCE 2019; 21:726-735. [PMID: 31626531 DOI: 10.1021/acscombsci.9b00086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Materials design and discovery through the high-throughput exploration of materials space has been recognized as a new paradigm in materials science. However, typical high-throughput exploration methods deliver high-dimensional and very diverse data sets that pose the challenge of extracting the key features and patterns that could guide the discovery process. Unraveling patterns is a nontrivial task as quite often the underlying physical phenomena are uncertain and latent variables governing the performance are mainly unknown. In this paper, we discuss challenges related to designing a data analytics tool for clustering high-throughput measurements performed on the compositional library of materials. The critical aspects of our methodology are (i) learning the similarity measures, as opposed to using fixed similarity measures (e.g., Euclidean distance, dynamic time warping), while (ii) imposing the similarity in the composition space. Our methodology is based on the multitask learning approach that is formulated to account for the composition neighborhoods that are specific to the compositional libraries. We demonstrate the advantages of our methodology for the library of cyclic voltammetry curves generated for model multimetal catalysts, as well as X-ray diffraction patterns from experimental studies. We also compare our approach with the current state-of-the-art methods used in similar problems. This work has important implications for designing high-throughput exploration including catalysts for electrochemical systems, such as fuel cells and metal-air batteries.
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Affiliation(s)
- Kiran Vaddi
- Department of Materials Design and Innovation, University at Buffalo, Buffalo, New York, United States
| | - Olga Wodo
- Department of Materials Design and Innovation, University at Buffalo, Buffalo, New York, United States
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14
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Zhang B, Ozel T, Elias JS, Costentin C, Nocera DG. Interplay of Homogeneous Reactions, Mass Transport, and Kinetics in Determining Selectivity of the Reduction of CO 2 on Gold Electrodes. ACS CENTRAL SCIENCE 2019; 5:1097-1105. [PMID: 31263769 PMCID: PMC6598161 DOI: 10.1021/acscentsci.9b00302] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Indexed: 05/13/2023]
Abstract
Gold electrocatalysts have been a research focus due to their ability to reduce CO2 into CO, a feedstock for further conversion. Many methods have been employed to modulate CO2 reduction (CDR) vs hydrogen evolution reaction (HER) selectivity on gold electrodes such as nano-/mesostructuring and crystal faceting control. Herein we show that gold surfaces with very different morphologies (planar, leaves, and wires) lead to similar bell-shaped CO faradaic efficiency as a function of applied potential. At low overpotential (E > -0.85 V vs standard hydrogen electrode (SHE)), HER is dominant via a potential quasi-independent rate that we attribute to a rate limiting process of surface dissociation of competent proton donors. As overpotential is increased, CO faradaic efficiency reaches a maximal value (near 90%) because CO production is controlled by an electron transfer rate that increases with potential, whereas HER remains almost potential independent. At high overpotential (E < -1.2 V vs SHE), CO faradaic efficiency decreases due to the concurrent rise of HER via bicarbonate direct reduction and leveling off of CDR as CO2 replenishment at the catalyst surface is limited by mass transport and homogeneous coupled reactions. Importantly, the analysis shows that recent attempts to overcome mass transport limitations with gas diffusion electrodes confront low carbon mass balance owing to the prominence of homogeneous reactions coupled to CDR. The comprehensive kinetics analysis of the factors defining CDR vs HER on gold electrodes developed here provides an activation-driving force relationship over a large potential window and informs on the design of conditions to achieve desirable high current densities for CO2 to CO conversion while maintaining high selectivity.
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Affiliation(s)
- Benjamin
A. Zhang
- Department
of Chemistry and Chemical Biology, Harvard
University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Tuncay Ozel
- Department
of Chemistry and Chemical Biology, Harvard
University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Joseph S. Elias
- Department
of Chemistry and Chemical Biology, Harvard
University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Cyrille Costentin
- Department
of Chemistry and Chemical Biology, Harvard
University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
- Laboratoire
d’Electrochimie Moléculaire, Unité Mixte de Recherche Université, CNRS No. 7591, Bâtiment Lavoisier, Université
Paris Diderot, Sorbonne Paris Cité, 15 rue Jean de Baïf, 75205 Paris Cedex 13, France
- (C.C.) E-mail:
| | - Daniel G. Nocera
- Department
of Chemistry and Chemical Biology, Harvard
University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
- (D.G.N.) E-mail:
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15
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Indra A, Song T, Paik U. Metal Organic Framework Derived Materials: Progress and Prospects for the Energy Conversion and Storage. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1705146. [PMID: 29984451 DOI: 10.1002/adma.201705146] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/30/2017] [Indexed: 06/08/2023]
Abstract
Exploring new materials with high efficiency and durability is the major requirement in the field of sustainable energy conversion and storage systems. Numerous techniques have been developed in last three decades to enhance the efficiency of the catalyst systems, control over the composition, structure, surface area, pore size, and moreover morphology of the particles. In this respect, metal organic framework (MOF) derived catalysts are emerged as the finest materials with tunable properties and activities for the energy conversion and storage. Recently, several nano- or microstructures of metal oxides, chalcogenides, phosphides, nitrides, carbides, alloys, carbon materials, or their hybrids are explored for the electrochemical energy conversion like oxygen evolution, hydrogen evolution, oxygen reduction, or battery materials. Interest on the efficient energy storage system is also growing looking at the practical applications. Though, several reviews are available on the synthesis and application of MOF and MOF derived materials, their applications for the electrochemical energy conversion and storage is totally a new field of research and developed recently. This review focuses on the systematic design of the materials from MOF and control over their inherent properties to enhance the electrochemical performances.
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Affiliation(s)
- Arindam Indra
- Department of Energy Engineering, Hanyang University, Seoul, 133-791, Republic of Korea
| | - Taeseup Song
- Department of Energy Engineering, Hanyang University, Seoul, 133-791, Republic of Korea
| | - Ungyu Paik
- Department of Energy Engineering, Hanyang University, Seoul, 133-791, Republic of Korea
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Miner EM, Wang L, Dincă M. Modular O 2 electroreduction activity in triphenylene-based metal-organic frameworks. Chem Sci 2018; 9:6286-6291. [PMID: 30123483 PMCID: PMC6063138 DOI: 10.1039/c8sc02049c] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/24/2018] [Indexed: 12/04/2022] Open
Abstract
Electrically conductive layered metal–organic frameworks, regardless of the metal or chelating atom identity, exhibit phase-dependent catalytic activity for O2 electroreduction.
Triphenylene ligands hexasubstituted with amino or phenol groups afford two phases of electrically conductive layered two-dimensional metal–organic frameworks upon reaction with various metals. Regardless of the identity of the metal or chelating atom, π-stacking within the MOF layers is essential to achieve high electrical conductivity, redox activity, and catalytic activity.
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Affiliation(s)
- Elise M Miner
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , USA .
| | - Lu Wang
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , USA . .,Key Laboratory of Cluster Science , Ministry of Education of China , Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials , School of Chemistry , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Mircea Dincă
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , USA .
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