1
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Mao L, Liu J, Lin R, Xue J, Yang Y, Xu S, Li Q, Qian J. Tailoring the Compositions and Nanostructures of Trimetallic Prussian Blue Analog-Derived Carbides for Water Oxidation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402916. [PMID: 39226210 DOI: 10.1002/advs.202402916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/01/2024] [Indexed: 09/05/2024]
Abstract
The electrochemical splitting of water for hydrogen production faces a major challenge due to its anodic oxygen evolution reaction (OER), necessitating research on the rational design and facile synthesis of OER catalysts to enhance catalytic activity and stability. This study proposes a ligand-induced MOF-on-MOF approach to fabricate various trimetallic MnFeCo-based Prussian blue analog (PBA) nanostructures. The addition of [Fe(CN)6]3- transforms them from cuboids with protruding corners (MnFeCoPBA-I) to core-shell configurations (MnFeCoPBA-II), and finally to hollow structures (MnFeCoPBA-III). After pyrolysis at 800 °C, they are converted into corresponding PBA-derived carbon nanomaterials, featuring uniformly dispersed Mn2Co2C nanoparticles. A comparative analysis demonstrates that the Fe addition enhances catalytic activity, while Mn-doped materials exhibit excellent stability. Specifically, the optimized MnFeCoNC-I-800 demonstrates outstanding OER performance in 1.0 m KOH solution, with an overpotential of 318 mV at 10 mA cm-2, maintaining stability for up to 150 h. Theoretical calculations elucidate synergistic interactions between Fe dopants and the Mn2Co2C matrix, reducing barriers for oxygen intermediates and improving intrinsic OER activity. These findings offer valuable insights into the structure-morphology relationships of MOF precursors, advancing the development of highly active and stable MOF-derived OER catalysts for practical applications.
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Affiliation(s)
- Lujiao Mao
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
| | - Jie Liu
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
| | - Rong Lin
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
| | - Jinhang Xue
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
| | - Yuandong Yang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
| | - Shaojie Xu
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
| | - Qipeng Li
- College of Chemistry and Chemical Engineering, Zhaotong University, Zhaotong, Yunnan, 657000, P. R. China
| | - Jinjie Qian
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang, 325035, P. R. China
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2
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Cao Y, Li Y, Ren C, Yang C, Hao R, Mu T. Manganese-based nanomaterials promote synergistic photo-immunotherapy: green synthesis, underlying mechanisms, and multiple applications. J Mater Chem B 2024; 12:4097-4117. [PMID: 38587869 DOI: 10.1039/d3tb02844e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Single phototherapy and immunotherapy have individually made great achievements in tumor treatment. However, monotherapy has difficulty in balancing accuracy and efficiency. Combining phototherapy with immunotherapy can realize the growth inhibition of distal metastatic tumors and enable the remote monitoring of tumor treatment. The development of nanomaterials with photo-responsiveness and anti-tumor immunity activation ability is crucial for achieving photo-immunotherapy. As immune adjuvants, photosensitizers and photothermal agents, manganese-based nanoparticles (Mn-based NPs) have become a research hotspot owing to their multiple ways of anti-tumor immunity regulation, photothermal conversion and multimodal imaging. However, systematic studies on the synergistic photo-immunotherapy applications of Mn-based NPs are still limited; especially, the green synthesis and mechanism of Mn-based NPs applied in immunotherapy are rarely comprehensively discussed. In this review, the synthesis strategies and function of Mn-based NPs in immunotherapy are first introduced. Next, the different mechanisms and leading applications of Mn-based NPs in immunotherapy are reviewed. In addition, the advantages of Mn-based NPs in synergistic photo-immunotherapy are highlighted. Finally, the challenges and research focus of Mn-based NPs in combination therapy are discussed, which might provide guidance for future personalized cancer therapy.
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Affiliation(s)
- Yuanyuan Cao
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, P. R. China.
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, P. R. China
| | - Yilin Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, P. R. China.
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, P. R. China
| | - Caixia Ren
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, P. R. China.
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, P. R. China
| | - Chengkai Yang
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, P. R. China
| | - Rongzhang Hao
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing 100069, P. R. China.
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, P. R. China
| | - Tiancheng Mu
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
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3
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Pan X, Yan M, Liu Q, Zhou X, Liao X, Sun C, Zhu J, McAleese C, Couture P, Sharpe MK, Smith R, Peng N, England J, Tsang SCE, Zhao Y, Mai L. Electric-field-assisted proton coupling enhanced oxygen evolution reaction. Nat Commun 2024; 15:3354. [PMID: 38637529 PMCID: PMC11026508 DOI: 10.1038/s41467-024-47568-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 04/03/2024] [Indexed: 04/20/2024] Open
Abstract
The discovery of Mn-Ca complex in photosystem II stimulates research of manganese-based catalysts for oxygen evolution reaction (OER). However, conventional chemical strategies face challenges in regulating the four electron-proton processes of OER. Herein, we investigate alpha-manganese dioxide (α-MnO2) with typical MnIV-O-MnIII-HxO motifs as a model for adjusting proton coupling. We reveal that pre-equilibrium proton-coupled redox transition provides an adjustable energy profile for OER, paving the way for in-situ enhancing proton coupling through a new "reagent"- external electric field. Based on the α-MnO2 single-nanowire device, gate voltage induces a 4-fold increase in OER current density at 1.7 V versus reversible hydrogen electrode. Moreover, the proof-of-principle external electric field-assisted flow cell for water splitting demonstrates a 34% increase in current density and a 44.7 mW/cm² increase in net output power. These findings indicate an in-depth understanding of the role of proton-incorporated redox transition and develop practical approach for high-efficiency electrocatalysis.
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Affiliation(s)
- Xuelei Pan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK
| | - Mengyu Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China.
| | - Qian Liu
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Xunbiao Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Xiaobin Liao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Congli Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Jiexin Zhu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China
| | - Callum McAleese
- UK National Ion Beam Centre, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Pierre Couture
- UK National Ion Beam Centre, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Matthew K Sharpe
- UK National Ion Beam Centre, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Richard Smith
- UK National Ion Beam Centre, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Nianhua Peng
- UK National Ion Beam Centre, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Jonathan England
- UK National Ion Beam Centre, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Shik Chi Edman Tsang
- Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK.
| | - Yunlong Zhao
- Dyson School of Design Engineering, Imperial College London, London, SW7 2BX, UK.
- National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK.
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P.R. China.
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4
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Zhao JW, Wang HY, Feng L, Zhu JZ, Liu JX, Li WX. Crystal-Phase Engineering in Heterogeneous Catalysis. Chem Rev 2024; 124:164-209. [PMID: 38044580 DOI: 10.1021/acs.chemrev.3c00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The performance of a chemical reaction is critically dependent on the electronic and/or geometric structures of a material in heterogeneous catalysis. Over the past century, the Sabatier principle has already provided a conceptual framework for optimal catalyst design by adjusting the electronic structure of the catalytic material via a change in composition. Beyond composition, it is essential to recognize that the geometric atomic structures of a catalyst, encompassing terraces, edges, steps, kinks, and corners, have a substantial impact on the activity and selectivity of a chemical reaction. Crystal-phase engineering has the capacity to bring about substantial alterations in the electronic and geometric configurations of a catalyst, enabling control over coordination numbers, morphological features, and the arrangement of surface atoms. Modulating the crystallographic phase is therefore an important strategy for improving the stability, activity, and selectivity of catalytic materials. Nonetheless, a complete understanding of how the performance depends on the crystal phase of a catalyst remains elusive, primarily due to the absence of a molecular-level view of active sites across various crystal phases. In this review, we primarily focus on assessing the dependence of catalytic performance on crystal phases to elucidate the challenges and complexities inherent in heterogeneous catalysis, ultimately aiming for improved catalyst design.
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Affiliation(s)
- Jian-Wen Zhao
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hong-Yue Wang
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Li Feng
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jin-Ze Zhu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jin-Xun Liu
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
| | - Wei-Xue Li
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, iChem, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
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5
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Wang K, Wang J, Chen P, Qin M, Yang C, Zhang W, Zhang Z, Zhen Y, Fu F, Xu B. Structural Transformation by Crystal Engineering Endows Aqueous Zinc-Ion Batteries with Ultra-long Cyclability. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300585. [PMID: 37029580 DOI: 10.1002/smll.202300585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/13/2023] [Indexed: 06/19/2023]
Abstract
Manganese oxide is a promising cathode material for aqueous zinc batteries. However, its weak structural stability, low electrical conductivity, and sluggish reaction kinetics lead to rapid capacity fading. Herein, a crystal engineering strategy is proposed to construct a novel MnO2 cathode material. Both experimental results and theoretical calculations demonstrate that Al-doping plays a crucial role in phase transition and doping-superlattice structure construction, which stabilizes the structure of MnO2 cathode materials, improves conductivity, and accelerates ion diffusion dynamics. As a result, 1.98% Al-doping MnO2 (AlMO) cathode shows an incredible 15 000 cycle stability with a low capacity decay rate of 0.0014% per cycle at 4 A g-1 . Additionally, it provides superior specific capacity of 311.2 mAh g-1 at 0.1 A g-1 and excellent rate performance (145.2 mAh g-1 at 5.0 A g-1 ). To illustrate the potential of 1.98%AlMO to be applied in actual practice, flexible energy storage devices are fabricated and measured. These discoveries provide a new insight for structural transformation via crystal engineering, as well as a new avenue for the rational design of electrode material in other battery systems.
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Affiliation(s)
- Kangning Wang
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Jianwei Wang
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Peiming Chen
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Mengran Qin
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Chunming Yang
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Wenlin Zhang
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Zhuangzhuang Zhang
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Yanzhong Zhen
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Feng Fu
- School of Chemistry & Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P. R. China
| | - Bin Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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6
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Zhang H, Bai Y, Lu X, Wang L, Zou Y, Tang Y, Zhu D. Ni-Doped MnO 2 Nanosheet Arrays for Efficient Urea Oxidation. Inorg Chem 2023; 62:5023-5031. [PMID: 36898358 DOI: 10.1021/acs.inorgchem.3c00234] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Urea oxidation reaction (UOR), with a low thermodynamic potential, offers great promise for replacing anodic oxygen evolution reaction of electrolysis systems such as water splitting, carbon dioxide reduction, etc., thus reducing the overall energy consumption. To promote the sluggish kinetics of UOR, highly efficient electrocatalysts are required, and Ni-based materials have been widely investigated. However, most of these reported Ni-based catalysts suffer from large overpotentials, as they generally undergo self-oxidation to form NiOOH species at high potentials, which act as catalytically active sites for UOR. Herein, Ni-doped MnO2 (Ni-MnO2) nanosheet arrays were successfully prepared on nickel foam. The as-fabricated Ni-MnO2 shows distinct UOR behavior with most of the previously reported Ni-based catalysts, as urea oxidation on Ni-MnO2 proceeds before the formation of NiOOH. Notably, a low potential of 1.388 V vs reversible hydrogen electrode was required to achieve a high current density of 100 mA cm-2 on Ni-MnO2. It is suggested that both Ni doping and nanosheet array configuration are responsible for the high UOR activities on Ni-MnO2. The introduction of Ni modifies the electronic structure of Mn atoms, and more Mn3+ species are generated in Ni-MnO2, contributing to its outstanding UOR performance.
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Affiliation(s)
- Huaiyu Zhang
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China
| | - Yu Bai
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China
| | - Xue Lu
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Liang Wang
- Centre for Catalysis and Clean Energy, Griffith University, Gold Coast Campus, Gold Coast, Queensland 4222, Australia
| | - Yan Zou
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China
| | - Yujia Tang
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China
| | - Dongdong Zhu
- School of Chemistry and Materials Science, Institute of Advanced Materials and Flexible Electronics (IAMFE), Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China
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7
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Yang S, Li X, Li Y, Wang Y, Jin X, Qin L, Zhang W, Cao R. Effect of Proton Transfer on Electrocatalytic Water Oxidation by Manganese Phosphates. Angew Chem Int Ed Engl 2023; 62:e202215594. [PMID: 36342503 DOI: 10.1002/anie.202215594] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Indexed: 11/09/2022]
Abstract
The effect of proton transfer on water oxidation has hardly been measurably established in heterogeneous electrocatalysts. Herein, two isomorphous manganese phosphates (NH4 MnPO4 ⋅ H2 O and KMnPO4 ⋅ H2 O) were designed to form an ideal platform to study the effect of proton transfer on water oxidation. The hydrogen-bonding network in NH4 MnPO4 ⋅ H2 O has been proven to be solely responsible for its better activity. The differences of the proton transfer kinetics in the two materials indicate a fast proton hopping transfer process with a low activation energy in NH4 MnPO4 ⋅ H2 O. In addition, the hydrogen-bonding network can effectively promote the proton transfer between adjacent Mn sites and further stabilize the MnIII -OH intermediates. The faster proton transfer results in a higher proportion of zeroth-order in [H+ ] for OER. Thus, proton transfer-affected electrocatalytic water oxidation has been measurably observed to bring detailed insights into the mechanism of water oxidation.
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Affiliation(s)
- Shujiao Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Yifan Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Yabo Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Xiaotong Jin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Lingshuang Qin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, 710119, Xi'an, China
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8
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Tan B, Huo Z, Sun L, Ren L, Zhao P, Feng N, Wan H, Guan G. Ionic liquid-modulated synthesis of MnO2 nanowires for promoting propane combustion: Microstructure engineering and regulation mechanism. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Dinh VP, Luu TA, Siemek K, Kozlenko DP, Le KH, Dang NT, Nguyen TV, Le Phuc N, Tran TD, Phan PT, Lo ST, Hoang KAT, Dinh TK, Luong NT, Le NC, Nguyen NT, Ho TH, Tran XD, Tran PD, Nguyen HQ. Crystallization Pathways and Evolution of Morphologies and Structural Defects of α-MnO 2 under Air Annealing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15604-15613. [PMID: 36507853 DOI: 10.1021/acs.langmuir.2c02237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Manganese dioxide nanomaterials have wide applications in many areas from catalysis and Li-ion batteries to gas sensing. Understanding the crystallization pathways, morphologies, and formation of defects in their structure is particularly important but still a challenging issue. Herein, we employed an arsenal of X-ray diffraction (XRD), scanning electron microscopy (SEM), neutron diffraction, positron annihilation spectroscopies, and ab initio calculations to investigate the evolution of the morphology and structure of α-MnO2 nanomaterials prepared via reduction of KMnO4 solution with C2H5OH prior to being annealed in air at 200-600 °C. We explored a novel evolution that α-MnO2 nucleation can be formed even at room temperature and gradually developed to α-MnO2 nanorods at above 500 °C. We also found the existence of H+ or K+ ions in the [1 × 1] tunnels of α-MnO2 and observed the simultaneous presence of Mn and O vacancies in α-MnO2 crystals at low temperatures. Increasing the temperature removed these O vacancies, leaving only the Mn vacancies in the samples.
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Affiliation(s)
- Van-Phuc Dinh
- Institute of Fundamental and Applied Sciences, Duy Tan University, 06 Tran Nhat Duat, Ho Chi Minh City700000, Viet Nam
- Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang City550000, Viet Nam
| | - Tuyen Anh Luu
- Center for Nuclear Technologies, Vietnam Atomic Energy Institute, Ho Chi Minh City700000, Viet Nam
- Dzhelepov Laboratory of Nuclear Problems, JINR, Dubna141980, Moscow Region, Russia
| | - Krzysztof Siemek
- Dzhelepov Laboratory of Nuclear Problems, JINR, Dubna141980, Moscow Region, Russia
- Institute of Nuclear Physics, Polish Academy of Sciences, KrakowPL-31342, Poland
| | - Denis P Kozlenko
- Frank Laboratory of Neutron Physics, JINR, Dubna141980, Moscow Region, Russia
| | - Khiem Hong Le
- Institute of Physics, Viet Nam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Ha Noi City100000, Viet Nam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi City100000, Viet Nam
| | - Ngoc Toan Dang
- Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang City550000, Viet Nam
- Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang City550000, Viet Nam
| | - Tiep Van Nguyen
- Institute of Physics, Viet Nam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Ha Noi City100000, Viet Nam
- Flerov Laboratory of Nuclear Reactions, JINR, Dubna141980, Moscow Region, Russia
| | - Nguyen Le Phuc
- Vietnam Petroleum Institute, Ho Chi Minh City700000, Viet Nam
| | - Tap Duy Tran
- Faculty of Materials Science and Technology, University of Science, VNU-HCMC, 227 Nguyen Van Cu, Ho Chi Minh City700000, Viet Nam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City700000, Viet Nam
| | - Phuc T Phan
- Center for Nuclear Technologies, Vietnam Atomic Energy Institute, Ho Chi Minh City700000, Viet Nam
| | - Son T Lo
- Center for Nuclear Technologies, Vietnam Atomic Energy Institute, Ho Chi Minh City700000, Viet Nam
| | - Kiet Anh Tuan Hoang
- Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang City550000, Viet Nam
- Graduate School of Education, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
| | - Thanh Khan Dinh
- University of Science and Education, The University of Da Nang, Da Nang City550000, Viet Nam
| | - Ngoc Thuy Luong
- Vietnam Petroleum Institute, Ho Chi Minh City700000, Viet Nam
| | - Ngoc Chung Le
- DaLat University, Dalat University, 01 Phu Dong Thien Vuong, Da Lat City670000, Viet Nam
| | - Ngoc-Tuan Nguyen
- Dalat Nuclear Research Institute, 01 Nguyen Tu Luc, Da Lat City670000, Viet Nam
| | - Thien-Hoang Ho
- Dong Nai University, Le Quy Don Street, Bien Hoa City, Dong Nai810000, Viet Nam
| | - Xuan Dong Tran
- Institute of Fundamental and Applied Sciences, Duy Tan University, 06 Tran Nhat Duat, Ho Chi Minh City700000, Viet Nam
- Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang City550000, Viet Nam
| | - Phong D Tran
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi City100000, Viet Nam
| | - Hung Q Nguyen
- Institute of Fundamental and Applied Sciences, Duy Tan University, 06 Tran Nhat Duat, Ho Chi Minh City700000, Viet Nam
- Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang City550000, Viet Nam
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10
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Qin Y, Liu Y, Zhang Y, Gu Y, Lian Y, Su Y, Hu J, Zhao X, Peng Y, Feng K, Zhong J, Rummeli MH, Deng Z. Ru-Substituted MnO 2 for Accelerated Water Oxidation: The Feedback of Strain-Induced and Polymorph-Dependent Structural Changes to the Catalytic Activity and Mechanism. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yongze Qin
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
- Jiangsu Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Yu Liu
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Yanzhi Zhang
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
- Jiangsu Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Yindong Gu
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
- Jiangsu Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Yuebin Lian
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Yanhui Su
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
- Jiangsu Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Jiapeng Hu
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Xiaohui Zhao
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Yang Peng
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Kun Feng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Jun Zhong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Mark H. Rummeli
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Zhao Deng
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
- Jiangsu Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
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11
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Oz E, Altin S, Avci S. Investigating of physical and electrochemical properties of Ni-doped Tunnel/P2 hybrid Na0.44MnO2 cathode material for sodium-ion batteries. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Yang J, Xu Q, Zheng Y, Tian Z, Shi Y, Ma C, Liu G, Peng B, Wang Z, Zheng W. Phase Engineering of Metastable Transition Metal Dichalcogenides via Ionic Liquid Assisted Synthesis. ACS NANO 2022; 16:15215-15225. [PMID: 36048506 DOI: 10.1021/acsnano.2c06549] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Metallic group VIB transition metal dichalcogenides (1T-TMDs) have attracted great interest because of their outstanding performance in electrocatalysis, supercapacitors, batteries, and so on, whereas the strict fabrication conditions and thermodynamical metastability of 1T-TMDs greatly restrict their extensive applications. Therefore, it is significant to obtain stable and high-concentration 1T-TMDs in a simple and large-scale strategy. Herein, we report a facile and large-scale synthesis of high-concentration 1T-TMDs via an ionic liquid (IL) assisted hydrothermal strategy, including 1T-MoS2 (the obtained MoS2 sample was denoted as MoS2-IL), 1T-WS2, 1T-MoSe2, and 1T-WSe2. More importantly, we found that IL can adsorb on the surface of 1T-MoS2, where the steric hindrance, π-π stacking, and hydrogen bonds of ionic liquid collectively induce the formation of the 1T-MoS2. In addition, DFT calculation reveals that electrons are transferred from [BMIM]SCN (1-butyl-3-methylimidazolium thiocyanate) to 1T-MoS2 layers by hydrogen bonds, which enhances the stability of 1T-MoS2, so the MoS2-IL performs with high stability for 180 days at room temperature without obvious change. Furthermore, the MoS2-IL exhibits excellent HER performance with an overpotential of 196 mV at 10 mA cm-2 in acid conditions.
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Affiliation(s)
- Jianing Yang
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Qiuchen Xu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Yiteng Zheng
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Zhangmin Tian
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Yingying Shi
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Chenxu Ma
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Guiying Liu
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Bin Peng
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Zhen Wang
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou 450002, PR China
| | - Wenjun Zheng
- Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), TKL of Metal and Molecule-Based Material Chemistry, College of Chemistry, Nankai University, Tianjin 300071, PR China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, PR China
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13
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Gu M, Jiang L, Zhao S, Wang H, Lin M, Deng X, Huang X, Gao A, Liu X, Sun P, Zhang X. Deciphering the Space Charge Effect of the p-n Junction between Copper Sulfides and Molybdenum Selenides for Efficient Water Electrolysis in a Wide pH Range. ACS NANO 2022; 16:15425-15439. [PMID: 36037404 DOI: 10.1021/acsnano.2c07255] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Space charge transfer is crucial for an efficient electrocatalytic process, especially for narrow-band-gap metal sulfides/selenides. Herein, we designed and synthesized a core-shell structure which is an ultrathin MoSe2 nanosheet coated CuS hollow nanoboxes (CuS@MoSe2) to form an open p-n junction structure. The space charge effect in the p-n junction region will greatly improve electron mass transfer and conduction, and also have abundant active interfaces. It was used as a bifunctional electrocatalyst for water oxidation at a wide pH range. It exhibits a low overpotential of 49 mV for the HER and 236 mV for the OER at a current density of 10 mA·cm-2 in acidic pH, 72 mV for the HER and 219 mV at 10 mA·cm-2 for the OER in alkaline pH, and 62 mV for the HER and 230 mV at 10 mA·cm-2 for the OER under neutral conditions. The experimental results and density functional theory calculations testify that the p-n junction in CuS@MoSe2 designed and synthesized has a strong space charge region with a synergistic effect. The built-in field can boost the electron transport during the electrocatalytic process and can stabilize the charged active center of the p-n junction. This will be beneficial to improve the electrocatalytic performance. This work provides the understanding of semiconductor heterojunction applications and regulating the electronic structure of active sites.
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Affiliation(s)
- Mingzheng Gu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Ling Jiang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Shengrong Zhao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Hao Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Man Lin
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Xueya Deng
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Xiaomin Huang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - An Gao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Xudong Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Ping Sun
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
| | - Xiaojun Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, Anhui Provincial Engineering Laboratory of New-Energy Vehicle Battery Energy-Storage Materials, Anhui Engineering Research Center of Carbon Neutrality, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China
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14
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Zheng X, Mohammadi N, Moreno Zuria A, Mohamedi M. Advanced Zinc-Air Batteries with Free-Standing Hierarchical Nanostructures of the Air Cathode for Portable Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:61374-61385. [PMID: 34927435 DOI: 10.1021/acsami.1c22371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
It is today advanced that the development of a free-standing (binderless) air cathode via direct growth of nonprecious metal electrocatalysts onto the surface of the conductive collector would be a cutting-edge strategy to reduce the interfacial resistance, improve the mechanical stability, and reduce the final weight and the cost of manufacturing. Here, for Zn-air batteries (ZABs), we propose an innovative binderless noble-metal-free hierarchical nanostructured bifunctional air cathode in which high-density MnOx nanorods (NRs) are directly grown on carbon nanotubes (CNTs) themselves synthesized on a microfibrous carbon paper (CP) substrate. All carbon/MnOx air cathodes achieved specific capacities very close to the theoretical value of 820 mAh gZn-1. A very stable voltage gap between the charge and discharge processes along hundred cycles was obtained, demonstrating the stability and good bifunctional electrocatalytic activities of these cathodes toward the oxygen reduction reaction/oxygen evolution reaction in a real ZAB device. As a proof-of-concept for handheld electronic applications, a ZAB assembled with CP/MnOx NRs as the air electrode and a Zn plate anode operated a timer for 14 days successfully, whereas two ZAB-based CNTs/MnOx cathodes connected in series powered a 2 V light-emitting diode (LED) bulb and a 3 V multimeter. The proposed strategy and results may pave the way for the rational design of hierarchical free-standing bifunctional electrocatalysts for ZABs, other metal-air batteries, and fuel cells.
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Affiliation(s)
- Xiaoying Zheng
- Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650, Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Naser Mohammadi
- Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650, Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Alonso Moreno Zuria
- Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650, Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Mohamed Mohamedi
- Institut National de la Recherche Scientifique (INRS), Énergie Matériaux Télécommunications (EMT), 1650, Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
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15
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Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions. Catalysts 2021. [DOI: 10.3390/catal11111394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), namely, so-called oxygen electrode reactions, are two fundamental half-cell reactions in the energy storage and conversion devices, e.g., zinc–air batteries and fuel cells. However, the oxygen electrode reactions suffer from sluggish kinetics, large overpotential and complicated reaction paths, and thus require efficient and stable electrocatalysts. Transition-metal-based layered double hydroxides (LDHs) and their derivatives have displayed excellent catalytic performance, suggesting a major contribution to accelerate electrochemical reactions. The rational regulation of electronic structure, defects, and coordination environment of active sites via various functionalized strategies, including tuning the chemical composition, structural architecture, and topotactic transformation process of LDHs precursors, has a great influence on the resulting electrocatalytic behavior. In addition, an in-depth understanding of the structural performance and chemical-composition-performance relationships of LDHs-based electrocatalysts can promote further rational design and optimization of high-performance electrocatalysts. Finally, prospects for the design of efficient and stable LDHs-based materials, for mass-production and large-scale application in practice, are discussed.
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16
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Chen Y, Yang S, Liu H, Zhang W, Cao R. An unusual network of α-MnO2 nanowires with structure-induced hydrophilicity and conductivity for improved electrocatalysis. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(21)63793-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Jia J, Li L, Lian X, Wu M, Zheng F, Song L, Hu G, Niu H. A mild reduction of Co-doped MnO 2 to create abundant oxygen vacancies and active sites for enhanced oxygen evolution reaction. NANOSCALE 2021; 13:11120-11127. [PMID: 34132721 DOI: 10.1039/d1nr02324a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Efficient and non-precious-metal-based catalysts (e.g., manganese-based oxides) for the oxygen evolution reaction (OER) remain a substantial challenge. Creation of oxygen vacancies of manganese-based oxides with the aim to enhance their intrinsic activities is rarely reported, and there is a critical requirement for a mild and facile synthesis strategy to create abundant oxygen vacancies on manganese-based oxides. Herein, Co-doped MnO2 nanowires were reduced by NaBH4 solution at room temperature; then, MnCo2O4.5 nanosheets with abundant oxygen vacancies and active sites were formed on the surface of Co-doped MnO2 nanowires. Benefiting from the reduction strategy, the fabricated hierarchical Co-doped-MnO2@MnCo2O4.5 nanowire/nanosheet nanocomposites exhibit higher catalytic activity (an overpotential of 250 mV at a current density of 10 mA cm-2 in 1.0 M KOH solution) than pristine Co-doped MnO2 nanowires. The calculated TOF of Co-doped-MnO2@MnCo2O4.5 is 0.034 s-1 at the overpotential of 300 mV, which is 136-fold higher than that of Co-doped-MnO2. The excellent OER performance was attributed to the synergistic advantages of abundant oxygen vacancies and active sites over the hierarchical nanowire-nanosheet architectures.
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Affiliation(s)
- Jincan Jia
- AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Functional Inorganic Materials of Anhui Province, Department of Chemistry, Anhui University, Hefei 230601, PR China.
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18
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Hastuti E, Subhan A, Amonpattaratkit P, Zainuri M, Suasmoro S. The effects of Fe-doping on MnO 2: phase transitions, defect structures and its influence on electrical properties. RSC Adv 2021; 11:7808-7823. [PMID: 35423298 PMCID: PMC8695119 DOI: 10.1039/d0ra10376d] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 01/28/2021] [Indexed: 01/24/2023] Open
Abstract
The composition of Mn1−xFexO2 (x = 0–0.15) was synthesized by a hydrothermal method at 140 °C for 5 hours of reaction time. Investigations were carried out including XRD, FTIR, Raman spectroscopy, FESEM, and TEM for crystallographic phase analysis. Furthermore, XPS and XAS were used to analyze the oxidation states of Mn and dopant Fe in the octahedron sites. For electrical characterizations, an impedance analyzer was used to explore the conductivity and dielectric properties. It was discovered that the undoped MnO2 possessed an α-MnO2 structure performing (2 × 2) tunnel permitting K+ insertion and had a nanorod morphology. The Fe ion that was doped into MnO2 caused a phase transformation from α-MnO2 to Ramsdellite R-MnO2 after x = 0.15 was reached and the tunnel dimension changed to (2 × 1). Furthermore, this caused increased micro-strain and oxygen vacancies. An oxidation state analysis of Mn and substituted Fe in the octahedron sites found mixed 3+ and 4+ states. Electrical characterization revealed that the conductivity of Fe-doped MnO2 is potentially electron influenced by the oxidation state of the cations in the octahedron sites, the micro-strain, the dislocation density, and the movement of K+ ions in the tunnel. Phase transformation from initially α-MnO2 to R-MnO2 due to Fe-doping cause modification of interatomic distances affects to the electrical properties.![]()
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Affiliation(s)
- E Hastuti
- Institute of Technology 'Sepuluh Nopember' Surabaya Kampus ITS Sukolilo Surabaya 60111 Indonesia +62315943351 +6282245157676.,Universitas Islam Negeri 'Maulana Malik Ibrahim' Malang Indonesia
| | - A Subhan
- Research Center for Physics, Indonesian Institute for Science (LIPI) Serpong Indonesia
| | - P Amonpattaratkit
- Synchroton Light Research Institute (Public Organisation) 111 University Avenue, Muang Nakhon Ratchasima 30000 Thailand
| | - M Zainuri
- Institute of Technology 'Sepuluh Nopember' Surabaya Kampus ITS Sukolilo Surabaya 60111 Indonesia +62315943351 +6282245157676
| | - S Suasmoro
- Institute of Technology 'Sepuluh Nopember' Surabaya Kampus ITS Sukolilo Surabaya 60111 Indonesia +62315943351 +6282245157676
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19
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Zhang S, Chen M, Zhao X, Cai J, Yan W, Yen JC, Chen S, Yu Y, Zhang J. Advanced Noncarbon Materials as Catalyst Supports and Non-noble Electrocatalysts for Fuel Cells and Metal–Air Batteries. ELECTROCHEM ENERGY R 2021. [DOI: 10.1007/s41918-020-00085-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Zhang Y, Dong X, Li H, Cui C, Fu C, Zeng S, Wang L. A controlled synthesis of γ-MnOOH nanorods via a facile hydrothermal method for high-performance Li-ion batteries. CrystEngComm 2021. [DOI: 10.1039/d1ce00170a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A hydrothermal reduction route was used for the controlled production of MnOOH nanostructures. The formed γ-MnOOH nanorods can be used as one of the high performance anodes for the preparation of lithium ion batteries.
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Affiliation(s)
- Yuting Zhang
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
| | - Xuelu Dong
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
| | - Haibo Li
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
| | - Chuansheng Cui
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
| | - Chonggang Fu
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
| | - Suyuan Zeng
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
| | - Lei Wang
- Department of Chemistry
- Liaocheng University
- Liaocheng
- P.R. China
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21
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Bi X, Tao L, Yao N, Gou M, Chen G, Meng X, Zhao P. Selectivity-tunable oxidation of tetrahydro-β-carboline over an OMS-2 composite catalyst: preparation and catalytic performance. Dalton Trans 2021; 50:3682-3692. [PMID: 33630988 DOI: 10.1039/d1dt00168j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Controlling the reaction selectivity of organic transformations without losing high conversion is always a challenge in catalytic processes. In this work, a H3PO4·12WO3/OMS-2 nanocomposite catalyst ([PW]-OMS-2) was prepared through the oxidation of a Mn(ii) salt with sodium phosphotungstate by KMnO4. Comprehensive characterization indicates that different Mn2+ precursors significantly affected the crystalline phase and morphology of the as-synthesized catalysts and only MnSO4·H2O as the precursor could lead to a cryptomelane phase. Moreover, [PW]-OMS-2 demonstrated excellent catalytic activity toward aerobic oxidative dehydrogenation of tetrahydro-β-carbolines due to mixed crystalline phases, enhanced surface areas, rich surface oxygen vacancies and labile lattice oxygen species. In particular, β-carbolines and 3,4-dihydro-β-carbolines could be obtained from tetrahydro-β-carbolines with very high selectivity (up to 99%) over [PW]-OMS-2 via tuning the reaction solvent and temperature. Under the present catalytic system, scalable synthesis of a β-carboline was achieved and the composite catalyst showed good stability and recyclability. This work not only clarified the structure-activity relationship of the catalyst, but also provided a practical pathway to achieve flexible, controllable synthesis of functional N-heterocycles.
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Affiliation(s)
- Xiuru Bi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Luyao Tao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nan Yao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Mingxia Gou
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Gexin Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Xu Meng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Peiqing Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.
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22
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Zhang HM, Hu C, Ji M, Wang M, Yu J, Liu H, Zhu C, Xu J. Co/Co9S8@carbon nanotubes on a carbon sheet: facile controlled synthesis, and application to electrocatalysis in oxygen reduction/oxygen evolution reactions, and to a rechargeable Zn-air battery. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01155j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A facile strategy to fabricate Co/Co9S8 nanoparticles-encapsulated in carbon nanotubes, on an N-doped porous graphene sheet (Co/Co9S8@CNTs) via pyrolysis of a mixture of Co(NO3)2, melamine and l-cysteine is reported.
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Affiliation(s)
- Han-Ming Zhang
- Hebei Key Laboratory of Material Near-Net Forming Technology
- School of Materials Science and Engineering
- Hebei University of Science and Technology
- Shijiazhuang
- P. R. China
| | - Chunyan Hu
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Muwei Ji
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Minjie Wang
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Jiali Yu
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Huichao Liu
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Caizhen Zhu
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Jian Xu
- Institute of Low-dimensional Materials Genome Initiative
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
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23
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Zhong Y, Dai J, Xu X, Su C, Shao Z. Facilitating Oxygen Redox on Manganese Oxide Nanosheets by Tuning Active Species and Oxygen Defects for Zinc‐Air Batteries. ChemElectroChem 2020. [DOI: 10.1002/celc.202001419] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yijun Zhong
- Western Australian School of Mines: Minerals Energy and Chemical Engineering (WASM-MECE) Curtin University Perth Western Australia 6102 Australia
| | - Jie Dai
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Nanjing 211816 P. R. China
| | - Xiaomin Xu
- Western Australian School of Mines: Minerals Energy and Chemical Engineering (WASM-MECE) Curtin University Perth Western Australia 6102 Australia
| | - Chao Su
- Western Australian School of Mines: Minerals Energy and Chemical Engineering (WASM-MECE) Curtin University Perth Western Australia 6102 Australia
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212100 P. R. China
| | - Zongping Shao
- Western Australian School of Mines: Minerals Energy and Chemical Engineering (WASM-MECE) Curtin University Perth Western Australia 6102 Australia
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Nanjing 211816 P. R. China
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Cavalcante Lima C, Silva Fonseca W, Colmati F, Ribeiro LK, Carvalho França M, Longo E, Suller Garcia MA, Atsushi Tanaka A. Enhancing the methanol tolerance of ultrasmall platinum nanoparticles and manganese oxide onto carbon for direct methanol fuel cell: The importance of the synthesis procedure. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Wu P, Zhao S, Yu J, Jin X, Ye D, Yang S, Qiu Y. Effect of Absorbed Sulfate Poisoning on the Performance of Catalytic Oxidation of VOCs over MnO 2. ACS APPLIED MATERIALS & INTERFACES 2020; 12:50566-50572. [PMID: 33125220 DOI: 10.1021/acsami.0c17042] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Manganese oxides have displayed vast potential for future development in the field of catalytic abatement of volatile organic compounds (VOCs) because of their low cost, high stability, and enhanced catalytic activity. Manganese sulfate and manganese chloride are widely used as reaction sources to prepare manganese oxides. As reported, absorbed chloride usually affects the performance of catalysts. However, the effect of absorbed sulfate on catalysts has been overlooked at present. Herein, the poisoning effect of absorbed sulfate on MnO2 catalyst in the catalytic oxidation of VOCs has been uncovered. Manganese sulfate-derived MnO2 catalyst exhibits a significantly enhanced performance after repeated washing by water, which indicates that absorbed sulfate has an adverse effect on MnO2 catalyst for removal of VOCs. The blocking of the surface oxygen species and active sites is considered as the reason for sulfate poisoning. Hence, elimination of absorbed sulfate by thorough washing or other effective method is essential for preparing high-performance manganese sulfate-derived manganese oxide catalysts.
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Affiliation(s)
- Peng Wu
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Shuaiqi Zhao
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Jiawen Yu
- Guangzhou International Economics College, No.28 Dayuanbei, Baiyun District, Guangzhou, Guangdong 510540, China
| | - Xiaojing Jin
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, China
| | - Daiqi Ye
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Shihe Yang
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yongcai Qiu
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, China
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26
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Wang P, Yan Y, Cao J, Feng J, Qi J. Surface activation towards manganese dioxide nanosheet arrays via plasma engineering as cathode and anode for efficient water splitting. J Colloid Interface Sci 2020; 586:95-102. [PMID: 33162037 DOI: 10.1016/j.jcis.2020.10.073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/17/2020] [Accepted: 10/19/2020] [Indexed: 10/23/2022]
Abstract
Developing high-efficiency, low-cost electrocatalysts for water splitting is important but challenging. Two-dimensional nanosheet manganese dioxide (MnO2) arrays are promising candidates for the design and development of advanced catalysts because of their large surface area. Here, a feasible solution to improve the catalytic activity of MnO2 materials via decorating the active sites on the surface is proposed. With the help of plasma engineering, we successfully enabled surface activity of the MnO2 nanosheets by decorating P or Fe species together with rich vacancies on the surface. The decorated P (P-MnO2) or Fe (Fe-MnO2) species were highly beneficial for the absorption of protons and OH- respectively, and rich oxygen vacancies induced the formation of stable Mn3+, which contributed to electron and charge transfer. Thus, increased electrochemically active specific areas, accelerated charge transfer, and a proper surface electronic structure could be achieved. On the basis of this activation strategy, the fabricated P-MnO2 and Fe-MnO2 showed excellent catalytic performance for the hydrogen evolution and oxygen evolution reactions. To our knowledge, the performance of P-MnO2 and Fe-MnO2 outperformed most MnO2-based electrocatalysts in the field of electrocatalytic water splitting. Surface activation of two-dimensional MnO2 materials by decorating active species via plasma treatment can provide a feasible route for modulating the performance of earth-abundant electrocatalysts for practical applications.
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Affiliation(s)
- Pengcheng Wang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Yaotian Yan
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Jian Cao
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China
| | - Jicai Feng
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - Junlei Qi
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China.
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Zhou J, Dou Y, Wu XQ, Zhou A, Shu L, Li JR. Alkali-Etched Ni(II)-Based Metal-Organic Framework Nanosheet Arrays for Electrocatalytic Overall Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1906564. [PMID: 32964611 DOI: 10.1002/smll.201906564] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 07/12/2020] [Indexed: 06/11/2023]
Abstract
The exploration of efficient electrocatalysts is the central issue for boosting the overall efficiency of water splitting. Herein, pertinently creating active sites and improving conductivity for metal-organic frameworks (MOFs) is proposed to tailor electrocatalytic properties for overall water splitting. An Ni(II)-MOF nanosheet array is presented as an ideal material model and a facile alkali-etched strategy is developed to break its NiO bonds accompanied with the introduction of extra-framework K cations, which contribute to creating highly active open metal sites and largely improving the electrical conductivity. As a result, the assembled defect-Ni-MOF||defect-Ni-MOF electrolyte cell delivers a lower and stable voltage of 1.50 V at 10 mA cm-2 in alkaline medium for overall water splitting, comparable to the combination of iridium and platinum as benchmark catalysts.
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Affiliation(s)
- Jian Zhou
- Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yibo Dou
- Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Xue-Qian Wu
- Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Awu Zhou
- Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Lun Shu
- Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Jian-Rong Li
- Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
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28
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Qi P, Gu Y, Sun H, Lian Y, Yuan X, Hu J, Deng Z, Yao HC, Guo J, Peng Y. Active nickel derived from coordination complex with weak inter/intra-molecular interactions for efficient hydrogen evolution via a tandem mechanism. J Catal 2020. [DOI: 10.1016/j.jcat.2020.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Li R, Zang J, Li W, Li J, Zou Q, Zhou S, Su J, Wang Y. Three-Dimensional Transition Metal Phosphide Heteronanorods for Efficient Overall Water Splitting. CHEMSUSCHEM 2020; 13:3718-3725. [PMID: 32363782 DOI: 10.1002/cssc.202000104] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/18/2020] [Indexed: 06/11/2023]
Abstract
The development of low-cost electrocatalysts with excellent activity and durability for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) poses a huge challenge in water splitting. In this study, a simple and scalable strategy is proposed to fabricate 3 D heteronanorods on nickel foam, in which nickel molybdenum phosphide nanorods are covered with cobalt iron phosphide (P-NM-CF HNRs). As a result of the rational design, the P-NM-CF HNRs have a large surface area, tightly connected interfaces, optimized electronic structures, and synergy between the metal atoms. Accordingly, the P-NM-CF HNRs exhibit a remarkably high catalytic activity for the OER under alkaline conditions and wide-pH HER. For overall water splitting, the catalyst only requires a voltage of 1.53 V to reach a current density of 10 mA cm-2 in 1 m KOH with prominent stability, and the activity is not degraded after stability testing for 36 h. This new strategy can inspire the design of durable nonprecious-metal catalysts for large-scale industrial water splitting.
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Affiliation(s)
- Rushuo Li
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Jianbing Zang
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Wei Li
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Jilong Li
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Qi Zou
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Shuyu Zhou
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Jinquan Su
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
| | - Yanhui Wang
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P. R. China
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Hu J, Yuan X, Wang C, Shao X, Yang B, Abdul Razzaq A, Zhao X, Lian Y, Deng Z, Chen M, Peng Y. Self-Phosphorization of MOF-Armored Microbes for Advanced Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000755. [PMID: 32374506 DOI: 10.1002/smll.202000755] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Utilization of microbes as the carbon source and structural template to fabricate porous carbon has incentivized great interests owing to their diverse micromorphology and intricate intracellular structure, apart from the obvious benefit of "turning waste into wealth." Challenges remain to preserve the biological structure through the harsh and laborious post-synthetic treatments, and tailor the functionality as desired. Herein, Escherichia coli is directly coated with metal-organic frameworks (MOFs) through in situ assembly to fabricate N, P co-doped porous carbon capsules expressing self-phosphorized metal phosphides. While the MOF coating serves as an armoring layer for facilitating the morphology inheritance from the bio-templates and provides metal sources for generating extra porosity and electrochemically active sites, the P-rich phospholipids and N-rich proteins from the plasma membrane enable carbon matrix doping and further yield metal phosphides. These unique structural and compositional features endow the carbon capsules with great capabilities in suppressing polysulfide shuttling and catalyzing reversible oxygen conversion, ultimately leading to the superb performance of lithium-sulfur batteries and zinc-air batteries. Combining the bio-templating strategy with hierarchical MOF assembly, this work opens a new avenue for the fabrication of highly porous and functional carbon for advanced energy applications.
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Affiliation(s)
- Jiapeng Hu
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Xietao Yuan
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Chonglong Wang
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou, 215006, China
| | - Xixi Shao
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou, 215006, China
| | - Baiyu Yang
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Amir Abdul Razzaq
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Xiaohui Zhao
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Yuebin Lian
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Zhao Deng
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Muzi Chen
- Analysis and Testing Center, Soochow University, Suzhou, 215123, China
| | - Yang Peng
- Soochow Institute for Energy and Materials Innovations, College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
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31
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Yang M, Li PH, Chen SH, Xiao XY, Tang XH, Lin CH, Huang XJ, Liu WQ. Nanometal Oxides with Special Surface Physicochemical Properties to Promote Electrochemical Detection of Heavy Metal Ions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001035. [PMID: 32406188 DOI: 10.1002/smll.202001035] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/26/2020] [Accepted: 04/06/2020] [Indexed: 06/11/2023]
Abstract
Heavy metal ions (HMIs) are one of the major environmental pollution problems currently faced. To monitor and control HMIs, rapid and reliable detection is required. Electrochemical analysis is one of the promising methods for on-site detection and monitoring due to high sensitivity, short response time, etc. Recently, nanometal oxides with special surface physicochemical properties have been widely used as electrode modifiers to enhance sensitivity and selectivity for HMIs detection. In this work, recent advances in the electrochemical detection of HMIs using nanometal oxides, which are attributed to specific crystal facets and phases, surficial defects and vacancies, and oxidation state cycle, are comprehensively summarized and discussed in aspects of synthesis, characterization, electroanalysis application, and mechanism. Moreover, the challenges and opportunities for the development and application of nanometal oxides with functional surface physicochemical properties in electrochemical determination of HMIs are presented.
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Affiliation(s)
- Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Xiang-Hu Tang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Chu-Hong Lin
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Wen-Qing Liu
- Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, P. R. China
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32
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Yang C, Li Y, Zhang B, Lian Y, Ma Y, Zhao X, Zeng X, Li J, Deng Z, Ye J, Wu W, Peng Y. Nitrogen-doped carbon fibers embedding CoO x nanoframes towards wearable energy storage. NANOSCALE 2020; 12:8922-8933. [PMID: 32267278 DOI: 10.1039/d0nr00582g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As continuous consumption of the world's lithium reserves is causing concern, alternative energy storage solutions based on earth-abundant elements, such as sodium-ion batteries and zinc-air batteries, have been attracting increasing attention. Herein, nanoframes of CoOx are encapsulated into carbonized microporous fibers by electrospinning zeolitic imidazolate frameworks to impart both a sodium-hosting capability and catalytic activities for reversible oxygen conversion. The ultrahigh rate performance of sodium-ion batteries up to 20 A g-1 and ultrastable cycling over 6000 cycles are attributed to a dual-buffering effect from the framework structure of CoOx and the confinement of carbon fibers that effectively accommodates cyclic volume fluctuation. Both in situ Raman and ex situ microscopic analyses unveil the reversible conversion of CoOx during the sodiation/desodiation process. The excellent ORR activity, superior to that of commercial Pt/C, is mainly ascribed to the abundant Co-N-C species and the full exposure of active sites on the microporous framework structure. Flexible and rechargeable sodium-ion full batteries and zinc-air batteries are further demonstrated with great energy efficiency and cycling stability, as well as mechanical deformability.
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Affiliation(s)
- Cheng Yang
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, China.
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33
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Leal-Rodríguez C, Rodríguez-Padrón D, Alothman ZA, Cano M, Giner-Casares JJ, Muñoz-Batista MJ, Osman SM, Luque R. Thermal and light irradiation effects on the electrocatalytic performance of hemoglobin modified Co 3O 4-g-C 3N 4 nanomaterials for the oxygen evolution reaction. NANOSCALE 2020; 12:8477-8484. [PMID: 32242199 DOI: 10.1039/d0nr00818d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The oxygen evolution reaction (OER) plays a key role in the water splitting process and a high energy conversion efficiency is essential for the definitive advance of hydrogen-based technologies. Unfortunately, the green and sustainable development of electrocatalysts for water oxidation is nowadays a real challenge. Herein, a successful mechanochemical method is proposed for the synthesis of a novel hemoglobin (Hb) modified Co3O4/g-C3N4 composite nanomaterial. The controlled incorporation of cobalt entities as well as Hb functionalization, without affecting the g-C3N4 nanoarchitecture, was evaluated using different physicochemical techniques, such as X-ray diffraction, N2-physisorption, scanning electron microscopy, UV-visible spectroscopy and X-ray photoelectron spectroscopy. The beneficial effect of the resulting ternary bioconjugate together with the influence of the temperature and light irradiation was investigated by electrochemical analysis. At 60 °C and under light exposition, this electrocatalyst requires an overpotential of 370 mV to deliver a current density of 10 mA·cm-2, showing a Tafel slope of 66 mV·dec-1 and outstanding long-term stability for 600 OER cycles. This work paves a way for the controlled fabrication of multidimensional and multifunctional bio-electrocatalysts.
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Affiliation(s)
- Carlos Leal-Rodríguez
- Departamento de Química Orgánica, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie (C-3), N. IV-A, Km 396, E14014, Córdoba, Spain.
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Wang T, Liu M. Rational phase transformation and morphology design to optimize oxygen evolution property of cobalt tungstate. NANOTECHNOLOGY 2020; 31:145603. [PMID: 31887727 DOI: 10.1088/1361-6528/ab662d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, a facile and feasible soft template method with the aid of buffer solution is successfully applied to synthesize high-order mesoporous cobalt tungstate for the first time. Attributing to the regulation of reaction solution's pH value and the existence of template, the phenomenon of phase transformation occurs, and high-order mesoporous structure is formed. Because of the variation of phase and morphology, only 448 mV can deliver a current density of 10 mA cm-2 with a small Tafel slope (61 mV dec-1) for mesoporous cobalt tungsten oxide hydroxide, while the cobalt tungstate nanoparticles cannot satisfy the basic demand of electrocatalysts. Herein, rational phase transformation and morphology design can significantly affect the property of oxygen evolution, which can provide vast opportunities to turn into candidates for the novel oxygen evolution catalyst.
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Affiliation(s)
- Tianlei Wang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, People's Republic of China
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35
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Tan X, Zeng W, Fan Y, Yan J, Zhao G. Covalent organic frameworks bearing pillar[6]arene-reduced Au nanoparticles for the catalytic reduction of nitroaromatics. NANOTECHNOLOGY 2020; 31:135705. [PMID: 31816606 DOI: 10.1088/1361-6528/ab5ff5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
While tremendous advancements in 2D materials anchoring Au nanoparticles have been made, it is an urgent challenge to explore a green and facile approach for obtaining small-size Au nanoparticles. The rise of 2D covalent organic framework (COF) presents more-promising candidates for constructing excellent sites for loading metal nanoparticles. In this study, a novel 2D heterogeneous hybrid nanomaterial (P6-Au-COF) based on COF and pillar[6]arene (P6) reduced Au nanoparticles (P6-Au) is prepared by a simple and green procedure. The Au nanoparticles with an average small diameter of 2-3 nm are homogeneously dispersed on the surface of the COF. The P6-Au-COF hybrid material shows highly catalytic performance for the reduction of nitrophenol isomers when compared with commercial Pd/C catalyst and other reported materials. The P6-Au-COF hybrid material exhibits durable recyclablility and stability during the catalytic reaction. Considering the outstanding merits of the heterogeneous 2D catalyst of P6-Au-COF as well as the simple and green preparation, this research might not only present enormous opportunities for stabilized, high-performance and sustainable catalysts, but be applied in other frontier study of sustainable functionalized nanocomposites and advanced materials.
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36
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Zhang H, Su J, Zhao K, Chen L. Recent Advances in Metal‐Organic Frameworks and Their Derived Materials for Electrocatalytic Water Splitting. ChemElectroChem 2020. [DOI: 10.1002/celc.202000136] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Heng Zhang
- School of Materials Science and EngineeringKunming University of Science and Technology Kunming, Yunnan 650093 P.R. China
- Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Ningbo, Zhejiang 315201 P.R. China
| | - Jianwei Su
- Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Ningbo, Zhejiang 315201 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Kunyu Zhao
- School of Materials Science and EngineeringKunming University of Science and Technology Kunming, Yunnan 650093 P.R. China
| | - Liang Chen
- Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Ningbo, Zhejiang 315201 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
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37
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Tian L, Zhai X, Wang X, Pang X, Li J, Li Z. Morphology and phase transformation of α-MnO2/MnOOH modulated by N-CDs for efficient electrocatalytic oxygen evolution reaction in alkaline medium. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135823] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Zhou LL, Pan DS, Guo ZH, Song JL. Two-dimensional bimetallic CoFe selenite via metal-ion assisted self-assembly for enhanced oxygen evolution reaction. NEW J CHEM 2020. [DOI: 10.1039/d0nj04832a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A 2D CoFe selenite crystals was used as an efficient OER catalyst, which was obtained in a high yield via a simple metal-ion self-assembly strategy under hydrothermal condition.
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Affiliation(s)
- Ling-Li Zhou
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Dong-Sheng Pan
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Zheng-Han Guo
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
| | - Jun-Ling Song
- International Joint Research Center for Photoresponsive Molecules and Materials
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- China
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Mukai K, Suzuki TM, Uyama T, Nonaka T, Morikawa T, Yamada I. High-pressure synthesis of ε-FeOOH from β-FeOOH and its application to the water oxidation catalyst. RSC Adv 2020; 10:44756-44767. [PMID: 35516263 PMCID: PMC9058670 DOI: 10.1039/d0ra09895g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 11/25/2020] [Indexed: 01/01/2023] Open
Abstract
Research on materials under extreme conditions such as high pressures provides new insights into the evolution and dynamics of the earth and space sciences, but recently, this research has focused on applications as functional materials. In this contribution, we examined high-pressure/high-temperature phases of β-FeO1−x(OH)1+xClx with x = 0.12 (β-FeOOH) and their catalytic activities of water oxidation, i.e., oxygen evolution reaction (OER). Under pressures above 6 GPa and temperatures of 100–700 °C, β-FeOOH transformed into ε-FeOOH, as in the case of α-FeOOH. However, the established pressure–temperature phase diagram of β-FeOOH differs from that of α-FeOOH, probably owing to its open framework structure and partial occupation of Cl− ions. The OER activities of ε-FeOOH strongly depended on the FeOOH sources, synthesis conditions, and composite electrodes. Nevertheless, one of the ε-FeOOH samples exhibited a low OER overpotential compared with α-FeOOH and its parent β-FeOOH, which are widely used as OER catalysts. Hence, ε-FeOOH is a potential candidate as a next-generation earth-abundant OER catalyst. Research on materials under extreme conditions such as high pressures provides new insights into the evolution and dynamics of the earth and space sciences, but recently, this research has focused on applications as functional materials.![]()
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Affiliation(s)
- Kazuhiko Mukai
- Toyota Central Research & Development Laboratories
- Nagakute
- Japan
| | | | - Takeshi Uyama
- Toyota Central Research & Development Laboratories
- Nagakute
- Japan
| | - Takamasa Nonaka
- Toyota Central Research & Development Laboratories
- Nagakute
- Japan
| | | | - Ikuya Yamada
- Department of Materials Science
- Graduate School of Engineering
- Osaka Prefecture University
- Sakai
- Japan
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Sun H, Min Y, Yang W, Lian Y, Lin L, Feng K, Deng Z, Chen M, Zhong J, Xu L, Peng Y. Morphological and Electronic Tuning of Ni2P through Iron Doping toward Highly Efficient Water Splitting. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02264] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | | | - Wenjuan Yang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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Xu C, Li Q, Shen J, Yuan Z, Ning J, Zhong Y, Zhang Z, Hu Y. A facile sequential ion exchange strategy to synthesize CoSe 2/FeSe 2 double-shelled hollow nanocuboids for the highly active and stable oxygen evolution reaction. NANOSCALE 2019; 11:10738-10745. [PMID: 31120471 DOI: 10.1039/c9nr02599e] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Transition metal-based nanostructures have been considered as promising substitutes for rare-earth metal oxide electrocatalysts toward the oxygen evolution reaction (OER). Herein, we report for the first time on a novel multicomponent metal selenide electrocatalyst based on CoSe2/FeSe2 double-shelled hollow nanocuboids (CoSe2/FeSe2 DS-HNCs) with the highly oxidative Co3+ species, which is synthesized via a facile sequential ion exchange strategy. The solid Co-precursor nanocuboids are first converted into the intermediate Co2[Fe(CN)6] with a mesoporous and double-shelled hollow structure produced through a facile ligand exchange at room temperature, and then the final CoSe2/FeSe2 DS-HNCs are obtained by a subsequent Se ion exchange reaction. The intermediate product of Co2[Fe(CN)6] plays an important role not only in constructing a double-shelled hollow structure but also in providing the Fe source for the growth of the final multicomponent metal selenides. Benefiting from the nanosized double-shelled hollow structure and mesoporous double-metal selenide shells with the highly oxidative Co3+ species, the as-prepared CoSe2/FeSe2 DS-HNCs exhibit superior OER performance to state-of-the-art metal selenides, including a small overpotential of 240 mV at a current density of 10 mA cm-2 and the excellent electrochemical durability over 50 h. This work opens up a new avenue towards developing highly active multicomponent noble-metal-free electrocatalysts.
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Affiliation(s)
- Chunyang Xu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China.
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Cheng L, Wang J, Zhang C, Jin B, Men Y. Boosting acetone oxidation efficiency over MnO2 nanorods by tailoring crystal phases. NEW J CHEM 2019. [DOI: 10.1039/c9nj04192c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MnO2 nanorods with different crystal phases (e.g. α-, β- and γ-MnO2) exhibited distinct crystal-phase dependent catalytic performances for acetone oxidation.
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Affiliation(s)
- Li Cheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Jinguo Wang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Chi Zhang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Bei Jin
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Yong Men
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
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