1
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Wang L, Huang J, Gan Q, Huang J, Hu X, Liu D, Taylor Isimjan T, Yang X. Fine-tuning nanoflower-like Fe/Co hybrids with high content oxyhydroxide accelerating oxygen evolution kinetics. J Colloid Interface Sci 2024; 670:124-131. [PMID: 38759267 DOI: 10.1016/j.jcis.2024.05.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/01/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
Iron hydroxide (FeOOH) is a potential active component in iron-based electrocatalysts for water electrolysis. However, its catalytic performance is constrained by its slow oxygen evolution reaction (OER) kinetics. Herein, we synthesized a nanoflower-like FeCo-hydro(oxy)oxides composite with tunable Fe/Co ratios (Fex-Coy) on nickel foam (NF) via a one-step electrodeposition technique. This method allows for precise control over the morphology and composition of the hybrid nanoflowers. The optimized Fe9-Co1 discloses favorable OER performance with a low overpotential of 222 mV at 50 mA cm-2 and demonstrates good stability exceeding 60 h at 10 mA cm-2. Further, an assembled Fe9-Co1(+)||Pt/C(-) dual-electrode configuration achieves a low cell voltage of 1.73 V at the current density of 100 mA cm-2 for water splitting, with long-term stability for 70 h and minimal degradation. Studies indicate that the distinctive nanoflower morphology of Fe9-Co1 enhances active site exposure, while both FeOOH and reconstructed CoOOH serve as catalytic centers, contributing to the observed OER performance. This work introduces a facile approach for synthesizing OER electrocatalysts, underscoring the role of the high-valence state of Fe/Co as active sites in the OER process.
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Affiliation(s)
- Lixia Wang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jia Huang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Qiuping Gan
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jiasui Huang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xinran Hu
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Dongcheng Liu
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Tayirjan Taylor Isimjan
- Saudi Arabia Basic Industries Corporation (SABIC) at King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
| | - Xiulin Yang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
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2
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Zhang X, Xu H, Shi Q, Sun W, Han X, Jiang D, Cao Y, He D, Cui X. Interfacial engineering layered bimetallic oxyhydroxides for efficient oxygen evolution reaction. J Colloid Interface Sci 2024; 670:142-151. [PMID: 38761567 DOI: 10.1016/j.jcis.2024.05.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/06/2024] [Accepted: 05/14/2024] [Indexed: 05/20/2024]
Abstract
Transition metal-based oxyhydroxides (MOOH) have garnered significant attention as promising catalyst for the Oxygen Evolution Reaction (OER). However, the direct synthesis of MOOH poses challenges due to the instability of trivalent cobalt and nickel salts, attrivuted to their high oxidation states. In this study, theoretical computations predicted that Co(OH)2 nanosheets are exclusively formed on carbon structures, owing to the stronger binding energy between CoOOH and CC compared to Co(OH)2. Furthermore, the presence of FeOOH interface reduces the binding energy between CoOOH and carbon structure. Experiment evidence confirms that CoOOH can be directly synthesized through controlled epitaxial growth on an FeOOH interface using a hydrothermal method. Moreover, the in-situ doping of iron leads to the formation of high-quality Fe0.35Co0.65OOH with exceptional OER performance, displaying a low overpotential of 240 mV at 10 mA cm-2 and a small Tafel slope of 43 mV dec-1. Density functional theory (DFT) calculations uncover the substantial enhancement of oxygen-containing species adsorption abilities by Fe0.35Co0.65OOH, resulting in improved OER activity. This work presents a promising strategy for the efficient preparation of layered cobalt oxyhydroxides, enabling efficient energy conversion and storage.
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Affiliation(s)
- Xiaolin Zhang
- College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China
| | - Huanjun Xu
- College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China
| | - Qiang Shi
- China Coal Energy Company Limited Hainan Branch, Haikou 570100, China
| | - Wei Sun
- Hainan Engineering Research Center of Tropical Ocean Advanced Optoelectronic Functional Materials, Hainan International Joint Research Center of Marine Advanced Photoelectric Functional Materials, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Xu Han
- College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China
| | - Dan Jiang
- College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China
| | - Yang Cao
- College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China
| | - Danfeng He
- College of Science, Laboratory of Child Cognition & Behavior Development of Hainan Province, Qiongtai Normal University, Haikou 571127, China.
| | - Xiaoqiang Cui
- State Key Laboratory of Automotive Simulation and Control, Department of Materials Science and Key Laboratory of Automobile Materials of MOE, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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3
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Wang C, Tu H, Hao Z, Li Y, Xu J, Hu X, Yu S, Tian H. Novel amorphous FeOOH-modified Co 9S 8 nanosheets with enhanced catalytic activity in oxygen evolution reaction. J Colloid Interface Sci 2024; 669:965-974. [PMID: 38759595 DOI: 10.1016/j.jcis.2024.05.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/02/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
Efficient oxygen evolution reaction (OER) is vital for water electrolysis and advanced hydrogen energy production. However, the sluggish kinetics of this reaction require significant overpotentials, leading to high energy consumption. Therefore, developing OER electrocatalysts with exceptional performance and long-term durability is crucial for enhancing the energy efficiency and cost-effectiveness of the hydrogen production process. In this research, novel FeOOH/Co9S8 catalysts were prepared through a two-step hydrothermal reaction followed by one-step electrodeposition on nickel foam for an alkaline OER. The as-obtained catalysts possessed abundant non-homogeneous interfaces between FeOOH and Co9S8 nanosheets, conducive to optimized coordination environments of Fe and Co sites by redistributing interfacial charges. This synergy strengthened the chemisorption of oxygenated intermediates, leading to accelerated reaction kinetics, abundant active sites, and enhanced OER performance. The optimized electrocatalyst FeOOH/Co9S8-15 achieved a current density of 10 mA cm-2 at an overpotential of 248 mV and good stability for over 140 h. This study presents a novel approach for producing compelling and durable alkaline dielectric OER electrocatalysts, which will be helpful in the future manufacturing of advanced energy devices.
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Affiliation(s)
- Chong Wang
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China
| | - Huanlu Tu
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China
| | - Zeyu Hao
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China
| | - Yaxin Li
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China
| | - Jian Xu
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China
| | - Xiaoying Hu
- College of Science and Laboratory of Materials Design and Quantum Simulation, Changchun University, Changchun 130022, Jilin, China
| | - Shansheng Yu
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China
| | - Hongwei Tian
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, Jilin, China.
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4
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Liu Y, Gao J, Yuan M, Li H, Chen Y, Du Y, Xiao Z, Liu K, Wang L. Sulfur-Induced Electronic Optimization of N-Doped Carbon with CoP/Co 2P Heterostructure by Precursor Design for Rechargeable Zinc-Air Batteries. Inorg Chem 2024; 63:7926-7936. [PMID: 38621361 DOI: 10.1021/acs.inorgchem.4c00859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Heteroatom doping and heterostructure construction are the key methods to improve the performance of electrocatalysts. However, developing such catalysts remains a challenging task. Herein, we designed two comparable polymers, phytic acid/thiourea polymer (PATP) and phytic acid/urea polymer (PAUP), as precursors, which contain C, N, S/O, and P by microwave heating. To pinpoint how the introduction of sulfur would affect the electronic structure and catalytic activity, these two polymers were physically blended with CoCo-Prussian blue analogue (CoCo-PBA) and further calcination, respectively. The highly dispersed CoP/Co2P-rich interfacial catalysts anchored on the N,S-codoped or N-doped carbon support were successfully prepared (CoP/Co2P@CNS and CoP/Co2P@CN). The prepared CoP/Co2P@CNS catalyst showed good ORR properties (E1/2 = 0.856 V vs RHE) and OER properties (Ej10 = 1.54 V vs RHE), which were superior to the commercial Pt/C and RuO2 catalysts. The reversible oxygen electrode index (ΔE = Ej10 - E1/2) can reach ∼0.684 V. Meanwhile, the rechargeable zinc-air battery assembled with a CoP/Co2P@CNS catalyst as the air cathode also showed excellent performance, with a charge-discharge cycle stability of up to 900 h. DFT calculations further confirm that the introduction of S atoms can affect the electronic structure and enhance the catalytic activity of C and N atoms on carbon support.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jianyang Gao
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Min Yuan
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Hongdong Li
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yuting Chen
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yunmei Du
- Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Zhenyu Xiao
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Kang Liu
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Lei Wang
- Key Laboratory of Eco-Chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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Kim NI, Lee J, Jin S, Park J, Jeong JY, Lee J, Kim Y, Kim C, Choi SM. Synergistic Effects in LaNiO 3 Perovskites between Nickel and Iron Heterostructures for Improving Durability in Oxygen Evolution Reaction for AEMWE. SMALL METHODS 2024:e2400284. [PMID: 38651527 DOI: 10.1002/smtd.202400284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/09/2024] [Indexed: 04/25/2024]
Abstract
Perovskite materials that aren't stable during the oxygen evolution reaction (OER) are unsuitable for anion-exchange membrane water electrolyzers (AEMWE). But through manipulating their electronic structures, their performance can further increase. Among the first-row transition metals, nickel and iron are widely recognized as prominent electrocatalysts; thus, the researchers are looking into how combining them can improve the OER. Recent research has actively explored the design and study of heterostructures in this field, showcasing the dynamic exploration of innovative catalyst configurations. In this study, a heterostructure is used to manipulate the electronic structure of LaNiO3 (LNO) to improve both OER properties and durability. Through adsorbing iron onto the LNO (LNO@Fe) as γ iron oxyhydroxide (γ-FeOOH), the binding energy of nickel in the LNO exhibited negative shifts, inferring nickel movement toward the metallic state. Consequently, the electrochemical properties of LNO@Fe are further improved. LNO@Fe showed excellent performance (1.98 A cm-2, 1 m KOH, 50 °C at 1.85 V) with 84.1% cell efficiency in AEMWE single cells, demonstrating great improvement relative to LNO. The degradation for the 850 h durability analysis of LNO@Fe is ≈68 mV kh-1, which is ≈58 times less than that of LNO.
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Affiliation(s)
- Nam In Kim
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
- Department of Materials Science and Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Jaehun Lee
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Song Jin
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Junyoung Park
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Jae-Yeop Jeong
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Jooyoung Lee
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Yangdo Kim
- Department of Materials Science and Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Chiho Kim
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
| | - Sung Mook Choi
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
- Advanced Materials Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
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6
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Zhang Y, Wang M, Shao C, Liu T, Sun M, Wu C, Su G, Wang Y, Ye J, Hu H, Li Y, Rao H, Lu Z. Nanozyme-induced deep learning-assisted smartphone integrated colorimetric and fluorometric dual-mode for detection of tetracycline analogs. Anal Chim Acta 2024; 1297:342373. [PMID: 38438242 DOI: 10.1016/j.aca.2024.342373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 03/06/2024]
Abstract
In this work, a colorimetric and fluorescent dual-mode probe controlled by NH2-MIL-88 B (Fe, Ni) nanozymes was developed to visually detect tetracycline antibiotics (TCs) residues quantitatively, as well as accurately distinguish the four most widely used tetracycline analogs (tetracycline (TC), chrycline (CTC), oxytetracycline (OTC), and doxycycline (DC)). Colorless substrate 3,3',5,5'-tetramethylbenzidine (TMB) may be oxidized to blue oxidized TMB by the Fe Fenton reaction, which was catalyzed by the NH2-MIL-88 B (Fe, Ni) nanozyme with POD-like activity. The colorimetric detection system allows TCs to interact with NH2-MIL-88 B (Fe, Ni). This inhibits the production of ·OH, weakens the oxidation process of TMB, and ultimately lightens the blue color in the system by blocking the electron transfer between NH2-MIL-88 B (Fe, Ni) and H2O2. Furthermore, TCs can interact with NH2-MIL-88 B (Fe, Ni) as a result of the internal filtering effect, which causes the fluorescence intensity to decrease as TCs concentration increases. Additionally, a portable instrument that combines a smartphone sensing platform with colorimetric and fluorescent signals was created for the quick, visual quantitative detection of TCs. The colorimetric and fluorescent dual-mode nano platform enables color change, with detection limits (LODs) of 0.182 μM and 0.0668 μM for the spectrometer and smartphone sensor, respectively, based on the inhibition of fluorescence and enzyme-like activities by TCs. Overall, the colorimetric and fluorescence dual-mode sensor has good stability, high specificity, and an efficient way to eliminate false-positive issues associated with a single detection mode.
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Affiliation(s)
- Yi Zhang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Mingyang Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Chunfeng Shao
- Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Department of Materials Science and Engineering, Huaibei Normal University, Huaibei, 235000, PR China
| | - Tao Liu
- College of Information Engineering, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Mengmeng Sun
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Chun Wu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Gehong Su
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Yanying Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Jianshan Ye
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, PR China
| | - Haipeng Hu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Yanbin Li
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China
| | - Hanbing Rao
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China.
| | - Zhiwei Lu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, PR China; Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Department of Materials Science and Engineering, Huaibei Normal University, Huaibei, 235000, PR China.
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7
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Shao B, Meng L, Chen F, Wang J, Zhai W, Li L. Ultrasound Induces Local Disorder of FeOOH on CdIn 2S 4 Photoanode for High Efficiency Photoelectrochemical Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401143. [PMID: 38534196 DOI: 10.1002/smll.202401143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/09/2024] [Indexed: 03/28/2024]
Abstract
The regulation of the crystal structure of oxygen evolution cocatalyst (OEC) is a promising strategy for enhancing the photoelectrochemical efficiency of photoanodes. However, the prevailing regulating approach typically requires a multistep procedure, presenting a significant challenge for maintaining the structural integrity and performance of the photoanode. Herein, FeOOH with a local disordered structure is directly grown on a CdIn2S4 (CIS) photoanode via a simple and mild sonochemical approach. By modulating the localized supersaturation of Ni ions, ultrasonic cavitation induces Ni ions to participate in the nucleation and growth of FeOOH clusters to cause local disorder of FeOOH. Consequently, the local disordered FeOOH facilitates the exposure of additional active sites, boosting OER kinetics and extending charge carrier lifetimes. Finally, the optimal photoanode reaches 4.52 mA cm-2 at 1.23 VRHE, and the onset potential shifts negatively by 330 mV, exhibiting excellent performance compared with that of other metal sulfide-based photoelectrodes reported thus far. This work provides a mild and controllable sonochemical method for regulating the phase structure of OECs to construct high-performance photoanodes.
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Affiliation(s)
- Bo Shao
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Linxing Meng
- Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
- Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Fang Chen
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jianyuan Wang
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Wei Zhai
- MOE Key Laboratory of Materials Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Liang Li
- Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), School of Physical Science and Technology, Soochow University, Suzhou, 215006, P. R. China
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Zhang C, Wang L, Cao Z, Li R, Ye S. Electronic structure modulation of Mo sites in anion and cation co-doped MoO 2 nanospheres for electrocatalytic water oxidation. Chem Commun (Camb) 2024; 60:2744-2747. [PMID: 38196399 DOI: 10.1039/d3cc06039j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Herein, we synthesized a type of anion/cation co-doped MoO2 nanosphere as an efficient OER catalyst. The optimized Ni/N-MoO2 exhibited a lower overpotential of 270 mV at 10 mA cm-2 in 24 h. This work provides a unique direction for the synthesis of efficient and stable MoO2-based electrocatalysts for water splitting.
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Affiliation(s)
- Chunyan Zhang
- School of Materials and Chemistry & School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Ling Wang
- School of Materials and Chemistry & School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Zhuwei Cao
- School of Materials and Chemistry & School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Rui Li
- School of Materials and Chemistry & School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
| | - Sheng Ye
- School of Materials and Chemistry & School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
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9
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Chen C, Jin H, Wang P, Sun X, Jaroniec M, Zheng Y, Qiao SZ. Local reaction environment in electrocatalysis. Chem Soc Rev 2024; 53:2022-2055. [PMID: 38204405 DOI: 10.1039/d3cs00669g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Beyond conventional electrocatalyst engineering, recent studies have unveiled the effectiveness of manipulating the local reaction environment in enhancing the performance of electrocatalytic reactions. The general principles and strategies of local environmental engineering for different electrocatalytic processes have been extensively investigated. This review provides a critical appraisal of the recent advancements in local reaction environment engineering, aiming to comprehensively assess this emerging field. It presents the interactions among surface structure, ions distribution and local electric field in relation to the local reaction environment. Useful protocols such as the interfacial reactant concentration, mass transport rate, adsorption/desorption behaviors, and binding energy are in-depth discussed toward modifying the local reaction environment. Meanwhile, electrode physical structures and reaction cell configurations are viable optimization methods in engineering local reaction environments. In combination with operando investigation techniques, we conclude that rational modifications of the local reaction environment can significantly enhance various electrocatalytic processes by optimizing the thermodynamic and kinetic properties of the reaction interface. We also outline future research directions to attain a comprehensive understanding and effective modulation of the local reaction environment.
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Affiliation(s)
- Chaojie Chen
- School of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
| | - Huanyu Jin
- School of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
| | - Pengtang Wang
- School of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
| | - Xiaogang Sun
- School of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry & Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA
| | - Yao Zheng
- School of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
| | - Shi-Zhang Qiao
- School of Chemical Engineering, University of Adelaide, Adelaide, SA 5005, Australia.
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10
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Li D, Xiang R, Yu F, Zeng J, Zhang Y, Zhou W, Liao L, Zhang Y, Tang D, Zhou H. In Situ Regulating Cobalt/Iron Oxide-Oxyhydroxide Exchange by Dynamic Iron Incorporation for Robust Oxygen Evolution at Large Current Density. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305685. [PMID: 37747155 DOI: 10.1002/adma.202305685] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/19/2023] [Indexed: 09/26/2023]
Abstract
The key dilemma for green hydrogen production via electrocatalytic water splitting is the high overpotential required for anodic oxygen evolution reaction (OER). Co/Fe-based materials show superior catalytic OER activity to noble metal-based catalysts, but still lag far behind the state-of-the-art Ni/Fe-based catalysts probably due to undesirable side segregation of FeOOH with poor conductivity and unsatisfied structural durability under large current density. Here, a robust and durable OER catalyst affording current densities of 500 and 1000 mA cm-2 at extremely low overpotentials of 290 and 304 mV in base is reported. This catalyst evolves from amorphous bimetallic FeOOH/Co(OH)2 heterostructure microsheet arrays fabricated by a facile mechanical stirring strategy. Especially, in situ X-ray photoelectron spectroscopy (XPS) and Raman analysis decipher the rapid reconstruction of FeOOH/Co(OH)2 into dynamically stable Co1-x Fex OOH active phase through in situ iron incorporation into CoOOH, which perform as the real active sites accelerating the rate-determining step supported by density functional theory calculations. By coupling with MoNi4 /MoO2 cathode, the self-assembled alkaline electrolyzer can deliver 500 mA cm-2 at a low cell voltage of 1.613 V, better than commercial IrO2 (+) ||Pt/C(-) and most of reported transition metal-based electrolyzers. This work provides a feasible strategy for the exploration and design of industrial water-splitting catalysts for large-scale green hydrogen production.
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Affiliation(s)
- Dongyang Li
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Rong Xiang
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Fang Yu
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Jinsong Zeng
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Yong Zhang
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Weichang Zhou
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Liling Liao
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Yan Zhang
- State Key Laboratory of Marine Resource Utilization in South China Sea, and Department of Materials Science and Engineering, Hainan University, Haikou, 570228, China
| | - Dongsheng Tang
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
| | - Haiqing Zhou
- Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Matter Microstructure and Function of Hunan Province, Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, 410081, China
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11
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Li L, Wang Z, She X, Pan L, Xi C, Wang D, Yi J, Yang J. Ni-modified FeOOH integrated electrode by self-source corrosion of nickel foam for high-efficiency electrochemical water oxidation. J Colloid Interface Sci 2023; 652:789-797. [PMID: 37619258 DOI: 10.1016/j.jcis.2023.08.112] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/06/2023] [Accepted: 08/18/2023] [Indexed: 08/26/2023]
Abstract
The construction and application of efficient iron oxyhydroxide (FeOOH) is still a challenge in the field of energy conversion. Here, a facile preparation method is developed by directly utilizing commercialized nickel foams (NF) as the nickel source and the supporting framework, as well as the ingenious use of etching effect originating from acidic medium in the process of iron salt hydrolysis. As a result, a Ni-modulated FeOOH integrated electrode (Ni-FeOOH/NF) is obtained. Unexpectedly, the implementation of our scheme effectively activates the catalytic intrinsic activity of FeOOH, successfully transforming the inert NF into an integrated electrode with high oxygen evolution reaction (OER) performance. Specifically, the Ni-FeOOH/NF exhibits the overpotential of 277 mV (@100 mA cm-2) and superior stability for OER. Additionally, the as-prepared Ni-FeOOH/NF electrode could also operate steadily for OER in alkaline adjusted saline water. Our research provides a new idea for the preparation of satisfactory Fe-based metal materials as OER electrocatalysts.
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Affiliation(s)
- Li Li
- Analysis and Testing Center, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhaolong Wang
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiaojie She
- School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Li Pan
- Analysis and Testing Center, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chunyan Xi
- Analysis and Testing Center, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Dan Wang
- Analysis and Testing Center, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jianjian Yi
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Juan Yang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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12
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Park MG, Hwang J, Deng YP, Lee DU, Fu J, Hu Y, Jang MJ, Choi SM, Feng R, Jiang G, Qian L, Ma Q, Yang L, Jun YS, Seo MH, Bai Z, Chen Z. Longevous Cycling of Rechargeable Zn-Air Battery Enabled by "Raisin-Bread" Cobalt Oxynitride/Porous Carbon Hybrid Electrocatalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2311105. [PMID: 38085968 DOI: 10.1002/adma.202311105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Indexed: 12/20/2023]
Abstract
Developing commercially viable electrocatalyst lies at the research hotspot of rechargeable Zn-air batteries, but it is still challenging to meet the requirements of energy efficiency and durability in realistic applications. Strategic material design is critical to addressing its drawbacks in terms of sluggish kinetics of oxygen reactions and limited battery lifespan. Herein, a "raisin-bread" architecture is designed for a hybrid catalyst constituting cobalt nitride as the core nanoparticle with thin oxidized coverings, which is further deposited within porous carbon aerogel. Based on synchrotron-based characterizations, this hybrid provides oxygen vacancies and Co-Nx -C sites as the active sites, resulting from a strong coupling between CoOx Ny nanoparticles and 3D conductive carbon scaffolds. Compared to the oxide reference, it performs enhanced stability in harsh electrocatalytic environments, highlighting the benefits of the oxynitride. Furthermore, the 3D conductive scaffolds improve charge/mass transportation and boost durability of these active sites. Density functional theory calculations reveal that the introduced N species into hybrid can synergistically tune the d-band center of cobalt and improve its bifunctional activity. As a result, the obtained air cathode exhibits bifunctional overpotential of 0.65 V and a battery lifetime exceeding 1350 h, which sets a new record for rechargeable Zn-air battery reported so far.
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Affiliation(s)
- Moon Gyu Park
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Henan Normal University, Xinxiang, 453007, China
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Jeemin Hwang
- Fuel Cell Research & Demonstration Center, Hydrogen Energy Research Division, Korea Institute of Energy Research (KIER), Buan-gun, 56332, Republic of Korea
| | - Ya-Ping Deng
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Dong Un Lee
- SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Jing Fu
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Yongfeng Hu
- Canadian Light Source, University of Saskatchewan, Saskatoon, SK, S7N 0×4, Canada
| | - Myeong Je Jang
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Henan Normal University, Xinxiang, 453007, China
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Sung Mook Choi
- Department of Hydrogen Energy Materials, Surface & Nano Materials Division, Korea Institute of Materials Science (KIMS), Changwon, 51508, Republic of Korea
- Advanced Materials Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Renfei Feng
- Canadian Light Source, University of Saskatchewan, Saskatoon, SK, S7N 0×4, Canada
| | - Gaopeng Jiang
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Lanting Qian
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Qianyi Ma
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Henan Normal University, Xinxiang, 453007, China
| | - Yun Seok Jun
- College of Engineering, Pukyong National University, Busan, 48547, Republic of Korea
| | - Min Ho Seo
- College of Engineering, Pukyong National University, Busan, 48547, Republic of Korea
| | - Zhengyu Bai
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Henan Normal University, Xinxiang, 453007, China
| | - Zhongwei Chen
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
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Gautam J, Meshesha MM, Chanda D, Gwon JS, Lee GS, Hong D, Yang BL. Rational Design of a Copper Cobalt Sulfide/Tungsten Disulfide Heterostructure for Excellent Overall Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2023; 15:40330-40342. [PMID: 37599432 DOI: 10.1021/acsami.3c02943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Integrating different components into a heterostructure is a novel approach that increases the number of active centers to enhance the catalytic activities of a catalyst. This study uses an efficient, facile hydrothermal strategy to synthesize a unique heterostructure of copper cobalt sulfide and tungsten disulfide (CuCo2S4-WS2) nanowires on a Ni foam (NF) substrate. The nanowire arrays (CuCo2S4-WS2/NF) with multiple integrated active sites exhibit small overpotentials of 202 (299) and 240 (320) mV for HER and OER at 20 (50) mA cm-2 and 1.54 V (10 mA cm-2) for an electrolyzer in 1.0 M KOH, surpassing commercial and previously reported catalysts. A solar electrolyzer composed of CuCo2S4-WS2 bifunctional electrodes also produced significant amounts of hydrogen through a water splitting process. The remarkable performance is accredited to the extended electroactive surface area, reasonable density of states near the Fermi level, optimal adsorption free energies, and good charge transfer ability, further validating the excellent dual function of CuCo2S4-WS2/NF in electrochemical water splitting.
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Affiliation(s)
- Jagadis Gautam
- Materials Science and Engineering Department, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
- GHS (Green H2 System) Co., Ltd. Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
| | - Mikiyas Mekete Meshesha
- Materials Science and Engineering Department, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
- GHS (Green H2 System) Co., Ltd. Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
| | - Debabrata Chanda
- Materials Science and Engineering Department, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
- GHS (Green H2 System) Co., Ltd. Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
| | - Jang Seok Gwon
- Materials Science and Engineering Department, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
- GHS (Green H2 System) Co., Ltd. Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
| | - Gi-Sung Lee
- National NanoFab Center, Yuseong-gu, Daejeon 305-338, Republic of Korea
| | - Daewon Hong
- National NanoFab Center, Yuseong-gu, Daejeon 305-338, Republic of Korea
| | - Bee Lyong Yang
- Materials Science and Engineering Department, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
- GHS (Green H2 System) Co., Ltd. Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea
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14
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Du J, Ding Y, Guo Y, Sun L, Li F. Iron atomic cluster supported on Co/NC having superior water oxidation activity over iron single atom. iScience 2023; 26:107339. [PMID: 37520718 PMCID: PMC10382919 DOI: 10.1016/j.isci.2023.107339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/06/2023] [Accepted: 07/04/2023] [Indexed: 08/01/2023] Open
Abstract
Carbon-supported iron-cobalt bimetallic electrocatalysts usually exhibit robust catalytic activity toward the oxygen evolution reaction (OER). However, the spatial isolation of Fe species at atomic level on cobalt-carbon solid remains a great challenge for practical catalytic applications in the OER. Here, we report the fabrication of CoFe bimetal porous carbon electrocatalysts by pyrolysis of molecularly defined iron complexes such as FePc (Pc = phthalocyanine) and Fe(acac)3 pre-encapsulated in the cavities of zeolitic imidazolate framework (ZIF)-67. With this unique strategy, high-loading atomic Fe nanoclusters (Fe-ACs) and Fe single atoms (Fe-SAs) were supported on Co/NC hybrids relying on the size of the molecular Fe precursors. The former exhibited superior OER performance to the single Fe atom-decorated Co/NC, as well as other ZIF-67-derived electrocatalysts. Theoretical modulation suggests Co as the OER active site for Fe-ACs@Co/NC at the in situ-formed FeOOH-ACs/Co3O4 interface, while Fe was proposed as the active site for Fe-SAs@Co/NC.
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Affiliation(s)
- Jian Du
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology, Dalian 116024, China
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Yunxuan Ding
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Yu Guo
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology, Dalian 116024, China
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science, Westlake University, Hangzhou 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Fei Li
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology, Dalian 116024, China
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15
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Liu Y, Ding M, Tian Y, Zhao G, Huang J, Xu X. In-situ growth of 3D hierarchical γ-FeOOH/Ni 3S 2 heterostructure as high performance electrocatalyst for overall water splitting. J Colloid Interface Sci 2023; 639:24-32. [PMID: 36804790 DOI: 10.1016/j.jcis.2023.02.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/01/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
Obtaining efficient, stable, and low-cost electrocatalysts is the key to realizing large-scale water splitting. In this work, three-dimensional (3D) hierarchical γ-iron oxyhydroxide (γ-FeOOH)/Ni3S2 electrocatalyst on Ni foam is constructed for electrochemical overall water splitting. The 3D γ-FeOOH/Ni3S2 heterostructure can effectively enhance active sites and charge transfer capability, also the heterostructure can benefit electronic effect at the interfaces and synergistic effect of multiple components. Therefore, the γ-FeOOH/Ni3S2 exhibits excellent electrocatalytic activity with low overpotentials of 279 mV at 50 mA⋅cm-2 for oxygen evolution reaction and 92 mV at 10 mA⋅cm-2 for hydrogen evolution reaction, respectively. In addition, only a potential of 1.66 V is needed to attain 10 mA⋅cm-2 for the overall water splitting. In particular, the γ-FeOOH/Ni3S2 exhibits long-term stability for 120 h at 10 mA⋅cm-2 without significant degradation. This work provides a valuable idea for obtaining low-cost and high performance bifunctional electrocatalysts for water splitting.
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Affiliation(s)
- Yutong Liu
- School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China
| | - Meng Ding
- School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China.
| | - Yuhang Tian
- School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China
| | - Gang Zhao
- School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China
| | - Jinzhao Huang
- School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China
| | - Xijin Xu
- School of Physics and Technology, University of Jinan, 336 West Road of Nan Xinzhuang, Jinan 250022, People's Republic of China.
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16
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Beglau THY, Rademacher L, Oestreich R, Janiak C. Synthesis of Ketjenblack Decorated Pillared Ni(Fe) Metal-Organic Frameworks as Precursor Electrocatalysts for Enhancing the Oxygen Evolution Reaction. Molecules 2023; 28:4464. [PMID: 37298940 PMCID: PMC10254712 DOI: 10.3390/molecules28114464] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/20/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023] Open
Abstract
Metal-organic frameworks (MOFs) have been investigated with regard to the oxygen evolution reaction (OER) due to their structure diversity, high specific surface area, adjustable pore size, and abundant active sites. However, the poor conductivity of most MOFs restricts this application. Herein, through a facile one-step solvothermal method, the Ni-based pillared metal-organic framework [Ni2(BDC)2DABCO] (BDC = 1,4-benzenedicarboxylate, DABCO = 1,4-diazabicyclo[2.2.2]octane), its bimetallic nickel-iron form [Ni(Fe)(BDC)2DABCO], and their modified Ketjenblack (mKB) composites were synthesized and tested toward OER in an alkaline medium (KOH 1 mol L-1). A synergistic effect of the bimetallic nickel-iron MOF and the conductive mKB additive enhanced the catalytic activity of the MOF/mKB composites. All MOF/mKB composite samples (7, 14, 22, and 34 wt.% mKB) indicated much higher OER performances than the MOFs and mKB alone. The Ni-MOF/mKB14 composite (14 wt.% of mKB) demonstrated an overpotential of 294 mV at a current density of 10 mA cm-2 and a Tafel slope of 32 mV dec-1, which is comparable with commercial RuO2, commonly used as a benchmark material for OER. The catalytic performance of Ni(Fe)MOF/mKB14 (0.57 wt.% Fe) was further improved to an overpotential of 279 mV at a current density of 10 mA cm-2. The low Tafel slope of 25 mV dec-1 as well as a low reaction resistance due to the electrochemical impedance spectroscopy (EIS) measurement confirmed the excellent OER performance of the Ni(Fe)MOF/mKB14 composite. For practical applications, the Ni(Fe)MOF/mKB14 electrocatalyst was impregnated into commercial nickel foam (NF), where overpotentials of 247 and 291 mV at current densities of 10 and 50 mA cm-2, respectively, were realized. The activity was maintained for 30 h at the applied current density of 50 mA cm-2. More importantly, this work adds to the fundamental understanding of the in situ transformation of Ni(Fe)DMOF into OER-active α/β-Ni(OH)2, β/γ-NiOOH, and FeOOH with residual porosity inherited from the MOF structure, as seen by powder X-ray diffractometry and N2 sorption analysis. Benefitting from the porosity structure of the MOF precursor, the nickel-iron catalysts outperformed the solely Ni-based catalysts due to their synergistic effects and exhibited superior catalytic activity and long-term stability in OER. In addition, by introducing mKB as a conductive carbon additive in the MOF structure, a homogeneous conductive network was constructed to improve the electronic conductivity of the MOF/mKB composites. The electrocatalytic system consisting of earth-abundant Ni and Fe metals only is attractive for the development of efficient, practical, and economical energy conversion materials for efficient OER activity.
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Affiliation(s)
| | | | | | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, 40204 Düsseldorf, Germany; (T.H.Y.B.); (L.R.); (R.O.)
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17
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Gautam J, Chanda D, Mekete Meshesha M, Jang SG, Lyong Yang B. Manganese cobalt sulfide/molybdenum disulfide nanowire heterojunction as an excellent bifunctional catalyst for electrochemical water splitting. J Colloid Interface Sci 2023; 638:658-671. [PMID: 36774879 DOI: 10.1016/j.jcis.2023.02.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/30/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023]
Abstract
Heterointerface engineering enhances catalytic active centers and charge transfer capabilities to increase oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) kinetics. In this study, a novel heterostructure of manganese cobalt sulfide-molybdenum disulfide on nickel foam (MnCo2S4-MoS2/NF) was synthesized via a two-step hydrothermal process. The nanowire-shaped MnCo2S4-MoS2 on NF displayed accelerated charge transfer ability and multiple integrated active sites. When tested in one molar (1 M) potassium hydroxide (KOH) electrolyte, it furnished low overpotentials of 105 and 171 mV for the HER and 220 and 300 mV for the OER at the current densities of 20 and 50 mA cm-2, respectively. An electrolyzer based on MnCo2S4-MoS2/NF required low operating potentials of 1.41 and 1.49 V to yield the current densities of 10 and 20 mA cm-2, respectively, surpassing commercial and previously reported catalysts. Density functional theory (DFT) analysis revealed that the MnCo2S4-MoS2 heterostructure possesses the optimal adsorption free energies for the reactants, an extended electroactive surface area, good charge transfer ability, and reasonable density of electronic states close to the Fermi level, all of which contribute to the high activity of catalyst. Thus, heterointerface engineering is a promising strategy for creating efficient catalysts for overall water splitting.
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Affiliation(s)
- Jagadis Gautam
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Debabrata Chanda
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Mikiyas Mekete Meshesha
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Seok Gwon Jang
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea
| | - Bee Lyong Yang
- School of Materials Science and Engineering, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi-si, Gyeongsangbuk-do 39177, Republic of Korea; GHS (Green H2 System) Co., Ltd., Gumi-si, Republic of Korea.
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18
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Xu Z, Jiang Y, Chen JL, Lin RYY. Heterostructured Ultrathin Two-Dimensional Co-FeOOH Nanosheets@1D Ir-Co( OH)F Nanorods for Efficient Electrocatalytic Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2023; 15:16702-16713. [PMID: 36972398 DOI: 10.1021/acsami.2c22632] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
It is highly desirable to develop high-performance and robust electrocatalysts for overall water splitting, as the existing electrocatalysts exhibit poor catalytic performance toward hydrogen and oxygen evolution reactions (HER and OER) in the same electrolytes, resulting in high cost, low energy conversion efficiency, and complicated operating procedures. Herein, a heterostructured electrocatalyst is realized by growing Co-ZIF-67-derived 2D Co-doped FeOOH on 1D Ir-doped Co(OH)F nanorods, denoted as Co-FeOOH@Ir-Co(OH)F. The Ir-doping couples with the synergy between Co-FeOOH and Ir-Co(OH)F effectively modulate the electronic structures and induce defect-enriched interfaces. This bestows Co-FeOOH@Ir-Co(OH)F with abundant exposed active sites, accelerated reaction kinetics, improved charge transfer abilities, and optimized adsorption energies of reaction intermediates, which ultimately boost the bifunctional catalytic activity. Consequently, Co-FeOOH@Ir-Co(OH)F exhibits low overpotentials of 192/231/251 and 38/83/111 mV at current densities of 10/100/250 mA cm-2 toward the OER and HER in a 1.0 M KOH electrolyte, respectively. When Co-FeOOH@Ir-Co(OH)F is used for overall water splitting, cell voltages of 1.48/1.60/1.67 V are required at current densities of 10/100/250 mA cm-2. Furthermore, it possesses outstanding long-term stability for OER, HER, and overall water splitting. Our study provides a promising way to prepare advanced heterostructured bifunctional electrocatalysts for overall alkaline water splitting.
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Affiliation(s)
- Zichen Xu
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024 Liaoning, China
| | - Yuanjuan Jiang
- State Key Laboratory of Fine Chemicals, Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024 Liaoning, China
| | - Jeng-Lung Chen
- National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan
| | - Ryan Yeh-Yung Lin
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan
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19
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Dajan FT, Sendeku MG, Wu B, Gao N, Anley EF, Tai J, Zhan X, Wang Z, Wang F, He J. Ce Site in Amorphous Iron Oxyhydroxide Nanosheet toward Enhanced Electrochemical Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2207999. [PMID: 37012608 DOI: 10.1002/smll.202207999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/26/2023] [Indexed: 06/19/2023]
Abstract
Iron oxyhydroxide has been considered an auspicious electrocatalyst for the oxygen evolution reaction (OER) in alkaline water electrolysis due to its suitable electronic structure and abundant reserves. However, Fe-based materials seriously suffer from the tradeoff between activity and stability at a high current density above 100 mA cm-2 . In this work, the Ce atom is introduced into the amorphous iron oxyhydroxide (i.e., CeFeOx Hy ) nanosheet to simultaneously improve the intrinsic electrocatalytic activity and stability for OER through regulating the redox property of iron oxyhydroxide. In particular, the Ce substitution leads to the distorted octahedral crystal structure of CeFeOx Hy , along with a regulated coordination site. The CeFeOx Hy electrode exhibits a low overpotential of 250 mV at 100 mA cm-2 with a small Tafel slope of 35.1 mVdec-1 . Moreover, the CeFeOx Hy electrode can continuously work for 300 h at 100 mA cm-2 . When applying the CeFeOx Hy nanosheet electrode as the anode and coupling it with the platinum mesh cathode, the cell voltage for overall water splitting can be lowered to 1.47 V at 10 mA cm-2 . This work offers a design strategy for highly active, low-cost, and durable material through interfacing high valent metals with earth-abundant oxides/hydroxides.
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Affiliation(s)
- Fekadu Tsegaye Dajan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Marshet Getaye Sendeku
- Ocean Hydrogen Energy R&D Center, Research Institute of Tsinghua University in Shenzhen, Shenzhen, 518057, P. R. China
| | - Binglan Wu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Ning Gao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Eyaya Fekadie Anley
- School of Physics and Micro-electronics, Hunan University, Changsha, 410082, P. R. China
| | - Jing Tai
- Testing and Analysis Center, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xueying Zhan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Zhenxing Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Fengmei Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jun He
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of physics and technology, Wuhan University, Wuhan, 430072, P. R. China
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20
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Wang J, Yuan S, Dai X, Dong B. Application, mechanism and prospects of Fe-based/ Fe-biochar catalysts in heterogenous ozonation process: A review. CHEMOSPHERE 2023; 319:138018. [PMID: 36731663 DOI: 10.1016/j.chemosphere.2023.138018] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/19/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
A growing number of novel organic contaminants have escalated the demands and challenges for water treatment technology. Advanced oxidation processes based on ozone have the advantage of strong oxidative capacity and higher efficiency, which have promising application prospects in the treatment of refractory organic contaminants. Biochar has attracted a lot of interest in recent years in wastewater treatment owing to its porous structure, portable preparation and outstanding stability. Moreover, iron species are widely used in catalytic ozonation owing to their magnetic polarization, vast abundance and low price. Despite a plethora of research on Fe-based catalysts in ozonation process, the heterogeneous catalytic ozonation with Fe-loaded biochar lacks a comprehensive compendium. This review intends to introduce the research progress on Fe-based catalysts and Fe-loaded biochar in heterogeneous catalytic ozonation progress, summarize and further explore the mechanisms and detection techniques of various active components in catalytic ozonation, as well as providing fresh insights for future research.
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Affiliation(s)
- Jingjing Wang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
| | - Shijie Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
| | - Bin Dong
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; YANGTZE Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing, 100038, PR China; Shanghai Investigation Design & Research Institute Co. Ltd, Shanghai, 200335, PR China.
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21
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Sun S, Peng B, Song Y, Wang R, Song H, Lin W. Engineering Z-Scheme FeOOH/PCN with Fast Photoelectron Transfer and Surface Redox Kinetics for Efficient Solar-Driven CO 2 Reduction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:12957-12966. [PMID: 36876632 DOI: 10.1021/acsami.2c19906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Solar-driven conversion of carbon dioxide (CO2) without sacrificial agents offers an attractive alternative in sustainable energy research; nevertheless, it is often retarded by the sluggish water oxidation kinetics and severe charge recombination. To this end, a Z-scheme iron oxyhydroxide/polymeric carbon nitride (FeOOH/PCN) heterojunction, as identified by quasi in situ X-ray photoelectron spectroscopy, is constructed. In this heterostructure, the two-dimensional FeOOH nanorod provides rich coordinatively unsaturated sites and highly oxidative photoinduced holes to boost the sluggish water decomposition kinetics. Meanwhile, PCN acts as a robust agent for CO2 reduction. Consequently, FeOOH/PCN achieves efficient CO2 photoreduction with a superior selectivity of CH4 (>85%), together with an apparent quantum efficiency of 2.4% at 420 nm that outperforms most two-step photosystems to date. This work offers an innovative strategy for the construction of photocatalytic systems toward solar fuel production.
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Affiliation(s)
- Shangcong Sun
- SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
| | - Bo Peng
- SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
| | - Ye Song
- SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
| | - Ruoyu Wang
- SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
| | - Haitao Song
- SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
| | - Wei Lin
- SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
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22
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Xie Q, Pan M, Wang Z, Si W, Zhang R, Shu Y, Sun G, Jing Q, Shen Y, Uyama H. Enhancing the oxygen reduction activity by constructing nanocluster-scaled Fe 2O 3/Cu interfaces. NANOSCALE 2023; 15:4388-4396. [PMID: 36745395 DOI: 10.1039/d2nr06941e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Interface engineering is a promising strategy to enhance the catalytic performance of electrocatalysts for the oxygen reduction reaction (ORR). However, it is still a challenge to modulate the size into a suitable range (e.g., nanocluster-scale) to make the most of the interface. Moreover, the explicit mechanism of the interface for enhancing catalytic performance is still elusive. Herein, a model catalyst (FeCu@NC) loaded with nanocluster-scaled Fe2O3/Cu interfaces was prepared by modulating the metal components of the precursor to explore the enhancement of interface engineering for the ORR. Benefiting from the synergistic effect of the strong interfacial coupling effects of Fe2O3/Cu and optimized microstructure, FeCu@NC exhibited superior ORR activity and zinc-air battery performance. Experimental and theoretical calculations revealed that the presence of the Fe2O3/Cu interface breaks the traditional cognition to endow the Cu atoms (intrinsically inferior for the ORR) with a slight positive charge, which serves as the active sites for the ORR. This study provides a novel insight into the design of advanced electrocatalysts for the ORR by interface engineering.
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Affiliation(s)
- Qianjie Xie
- College of Chemistry and Materials Science, Northwest University, No. 1, Xuefu Road, 710127 Xi'an, Shaanxi, China.
| | - Meiling Pan
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology, Xinjiang University, No. 777 Huarui Road, 830046 Urumqi, China.
| | - Zheng Wang
- Xi'an Rare Metal Materials Research Institute Co., Ltd., No. 96 Weiyang Road, 710016 Xi'an, China.
| | - Wenfang Si
- College of Chemistry and Materials Science, Northwest University, No. 1, Xuefu Road, 710127 Xi'an, Shaanxi, China.
| | - Ruiyi Zhang
- College of Chemistry and Materials Science, Northwest University, No. 1, Xuefu Road, 710127 Xi'an, Shaanxi, China.
| | - Yu Shu
- College of Chemistry and Materials Science, Northwest University, No. 1, Xuefu Road, 710127 Xi'an, Shaanxi, China.
| | - Guodong Sun
- Xi'an Rare Metal Materials Research Institute Co., Ltd., No. 96 Weiyang Road, 710016 Xi'an, China.
| | - Qun Jing
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology, Xinjiang University, No. 777 Huarui Road, 830046 Urumqi, China.
| | - Yehua Shen
- College of Chemistry and Materials Science, Northwest University, No. 1, Xuefu Road, 710127 Xi'an, Shaanxi, China.
| | - Hiroshi Uyama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
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23
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Wang X, Xiang R, Li S, Song K, Huang W. Self-standing 2D/2D Co 3O 4@FeOOH nanosheet arrays as promising catalysts for the oxygen evolution reaction. Dalton Trans 2023; 52:2002-2012. [PMID: 36691954 DOI: 10.1039/d2dt03708d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The rational design of a highly efficient oxygen evolution reaction (OER) is crucial for the practical applications of water electrolysis. Herein, a hybrid Co3O4@FeOOH/NF electrode was fabricated by loading FeOOH sheets on the surface of Co3O4 nanosheet arrays via a newly developed chemical deposition protocol. The decoration of FeOOH on Co3O4 nanosheet arrays not only endows a strong electronic interaction between the two components but also offers sufficient active sites for the OER process. Benefitting from these advantages, Co3O4@FeOOH/NF exhibited outstanding OER activity in terms of a low overpotential of 209 mV at 10 mA cm-2 and a low Tafel slope of 48.9 mV dec-1. Moreover, nearly steady state operation current and negligible change in the phase and morphology of the catalyst also indicate remarkable stability. This work may provide an important guide for the design of high-performance electrocatalysts for energy conversion applications.
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Affiliation(s)
- Xingyu Wang
- College of Chemistry and Chemical Engineering, Chongqing University of Science & Technology, Chongqing, 401331, China.
| | - Rui Xiang
- College of Chemistry and Chemical Engineering, Chongqing University of Science & Technology, Chongqing, 401331, China.
| | - Su Li
- College of Chemistry and Chemical Engineering, Chongqing University of Science & Technology, Chongqing, 401331, China.
| | - Kejin Song
- College of Chemistry and Chemical Engineering, Chongqing University of Science & Technology, Chongqing, 401331, China.
| | - Wenzhang Huang
- College of Chemistry and Chemical Engineering, Chongqing University of Science & Technology, Chongqing, 401331, China.
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24
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Ouyang Q, Cheng S, Yang C, Lei Z. Ni, Co, and Yb Cation Co-doping and Defect Engineering of FeOOH Nanorods as an Electrocatalyst for the Oxygen Evolution Reaction. Inorg Chem 2023; 62:1719-1727. [PMID: 36638065 DOI: 10.1021/acs.inorgchem.2c04174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Electrocatalytic water splitting is a feasible technology that can produce hydrogen from renewable sources. The oxygen evolution reaction (OER), which has a slower kinetics and higher overpotential than the hydrogen evolution reaction, is the bottleneck that limits the overall water splitting. It is essential to develop efficient OER catalysts to reduce the anode overpotential. Herein, Ni,Co,Yb-FeOOH nanorod arrays grown directly on a carbon cloth are synthesized by a simple one-step hydrothermal method. The doped Ni2+ and Co2+ can occupy Fe2+ and Fe3+ sites in FeOOH, increasing the concentration of oxygen vacancies (VO), and the doped Yb3+ with a larger ionic radius can occupy the interstitial sites, which leads to more edge dislocations. VO and edge dislocations greatly enrich the active sites in FeOOH/CC. In addition, density functional theory calculations confirm that doping of Ni2+, Co2+, and Yb3+ modulates the electronic structure of the main active Fe sites, bringing its d-band center closer to the Fermi level and reducing the Gibbs free energy change of the rate-determining step of the OER. When the current density reaches 10 mA cm-2, the overpotential of Ni,Co,Yb-FeOOH/CC is only 230.9 mV, and the Tafel slope is 22.7 mV dec-1. In particular, a mechanism of multi-cation doping synergistic interaction with the oxygen vacancy and edge dislocation to enhance the OER catalytic activity of the material is proposed.
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Affiliation(s)
- Qi Ouyang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
| | - Shichao Cheng
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
| | - Chunhui Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
| | - Zuotao Lei
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin150001, People's Republic of China
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25
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Xie J, Miao Y, Liu B, Shao S, Zhang X, Sun Z, Xu X, Yao Y, Hu C, Zou J. CoFe Alloy-Coupled Mo 2C Wrapped by Nitrogen-Doped Carbon as Highly Active Electrocatalysts for Oxygen Reduction/Evolution Reactions. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:543. [PMID: 36770504 PMCID: PMC9920335 DOI: 10.3390/nano13030543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/19/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Molybdenum carbide (Mo2C) with a Pt-like d-band electron structure exhibits certain activities for oxygen reduction and evolution reactions (ORR/OER) in alkaline solutions, but it is questioned due to its poor OER stability. Combining Mo2C with transition metals alloy is a feasible way to stabilize its electrochemical activity. Herein, CoFe-Prussian blue analogues are used as a precursor to compound with graphitic carbon nitride and Mo6+ to synthesize FeCo alloy and Mo2C co-encapsulated N-doped carbon (NG-CoFe/Mo2C). The morphology of NG-CoFe/Mo2C (800 °C) shows that CoFe/Mo2C heterojunctions are well wrapped by N-doped graphitic carbon. Carbon coating not only inhibits growth and agglomeration of Mo2C/CoFe, but also enhances corrosion resistance of NG-CoFe/Mo2C. NG-CoFe/Mo2C (800 °C) exhibits an excellent half-wave potential (E1/2 = 0.880 V) for ORR. It also obtains a lower OER overpotential (325 mV) than RuO2 due to the formation of active species (CoOOH/β-FeOOH, as indicated by in-situ X-ray diffraction tests). E1/2 shifts only 6 mV after 5000 ORR cycles, while overpotential for OER increases only 19 mV after 1000 cycles. ORR/OER performances of NG-CoFe/Mo2C (800 °C) are close to or better than those of many recently reported catalysts. It provides an interfacial engineering strategy to enhance the intrinsic activity and stability of carbides modified by transition-metals alloy for oxygen electrocatalysis.
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Affiliation(s)
- Jiahao Xie
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Yu Miao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Bin Liu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Siliang Shao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xu Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Zhiyao Sun
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xiaoqin Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Yuan Yao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Chaoyue Hu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Jinlong Zou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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26
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Surface reconstruction of Fe(III)/NiS nanotubes for generating high-performance oxygen-evolution catalyst. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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27
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Cao H, Qiao P, Zhong Q, Qi R, Dang Y, Wang L, Xu Z, Zhang W. In Situ Reconstruction NiO Octahedral Active Sites for Promoting Electrocatalytic Oxygen Evolution of Nickel Phosphate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204864. [PMID: 36394082 DOI: 10.1002/smll.202204864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Electrochemical activation strategy is very effective to improve the intrinsic catalytic activity of metal phosphate toward the sluggish oxygen evolution reaction (OER) for water electrolysis. However, it is still challenging to operando trace the activated reconstruction and corresponding electrocatalytic dynamic mechanisms. Herein, a constant voltage activation strategy is adopted to in situ activate Ni2 P4 O12 , in which the break of NiONi bond and dissolution of PO4 3- groups could optimize the lattice oxygen, thus reconstructing an irreversible amorphous Ni(OH)2 layer with a thickness of 1.5-3.5 nm on the surface of Ni2 P4 O12 . The heterostructure electrocatalyst can afford an excellent OER activity in alkaline media with an overpotential of 216.5 mV at 27.0 mA cm-2 . Operando X-ray absorption fine structure spectroscopy analysis and density functional theory simulations indicate that the heterostructure follows a nonconcerted proton-electron transfer mechanism for OER. This activation strategy demonstrates universality and can be used to the surface reconstruction of other metal phosphates.
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Affiliation(s)
- Hongshuai Cao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Panzhe Qiao
- Shanghai Synchrotron Radiation Facility, Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Qilan Zhong
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Science, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, P. R. China
| | - Ruijuan Qi
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Science, School of Physics and Electronic Science, East China Normal University, Shanghai, 200241, P. R. China
| | - Yijing Dang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Lei Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China
| | - Zhiai Xu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
| | - Wen Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200241, China
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28
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Pan Y, Sanati S, Abazari R, Noveiri VN, Gao J, Kirillov AM. Pillared-MOF@NiV-LDH Composite as a Remarkable Electrocatalyst for Water Oxidation. Inorg Chem 2022; 61:20913-20922. [PMID: 36521012 DOI: 10.1021/acs.inorgchem.2c03327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Oxygen evolution reaction (OER) represents a highly important electrochemical transformation in energy storage and conversion technologies. Considering the low rate of this four-electron half-reaction, there is a demand for efficient, stable, and noble-metal-free electrocatalysts to improve the kinetic and economical parameters. In this work, a new pillared-MOF@NiV-LDH nanocomposite based on a CoII metal-organic framework (pillared-MOF) and heterometallic Ni/V-layered double hydroxide (NiV-LDH) was assembled via a simple protocol, characterized, and explored as an electrocatalyst in OER. A remarkable electrocatalytic efficiency of pillared-MOF@NiV-LDH in 1 M KOH is evidenced by a low overpotential (238 mV at 10 mA cm-2 current density) and a small value of the Tafel slope (62 mV dec-1). These parameters are very close to those of the reference IrO2 electrocatalyst and are superior to the majority of the LDH- and MOF-based systems previously applied for OER. Excellent stability of pillared-MOF@NiV-LDH was confirmed by the chronopotentiometry tests for 70 h and linear-sweep voltammetry after 7000 cycles. Features such as rich electroactive sites, porous structure, high surface area, and synergic effect between pillared-MOF and NiV-LDH are likely responsible for the remarkable electrocatalytic efficiency of this electrocatalyst in OER. Despite prior reports on the application of NiV-LDH in OER, the present study describes the first example where this type of LDH is blended with MOF to generate a nanocomposite material. The interface between the two components of the composite can improve the electronic structure and, in turn, the electrocatalytic behavior. The introduction of this composite paves the way toward the synthesis of other multicomponent materials with potential applications in different energy fields.
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Affiliation(s)
- Yangdan Pan
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Soheila Sanati
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh 55181-83111, Iran
| | - Reza Abazari
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh 55181-83111, Iran
| | - Vahid Navvar Noveiri
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh 55181-83111, Iran
| | - Junkuo Gao
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Alexander M Kirillov
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
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29
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Chen Z, Xu C, Zhao F, Xi S, Li W, Huang M, Cai B, Gu M, Wang HL, Xiang XD. High-Performance Oxygen Evolution Reaction Electrocatalysts Discovered via High-Throughput Aerogel Synthesis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhuyang Chen
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Chen Xu
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Fu Zhao
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, A*STAR (Agency for Science, Technology and Research), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Weixuan Li
- School of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Mingcheng Huang
- School of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Bijun Cai
- School of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Meng Gu
- School of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - Hsing-Lin Wang
- School of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
| | - X.-D. Xiang
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
- School of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, P. R. China
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30
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Feng X, Sun T, Feng X, Chen L, Yang Y, Zhang F. Engineering the Near-Surface Structure of WO 3 by an Amorphous Layer with Trivalent Ni and Self-Adapting Oxygen Vacancies for Efficient Photocatalytic and Photoelectrochemical Acidic Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54769-54780. [PMID: 36469043 DOI: 10.1021/acsami.2c16839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Exploiting an effective strategy to tailor the construction, composition, and local electronic structure of the photocatalyst surface is pivotal to photocatalytic activity, but remains challenging. Transition metal elements can boost the oxygen evolution reaction activity especially one like Ni in high oxidation states, whereas it is uneasy to prepare Ni3+ under mild conditions or play to their strengths in acidic conditions. In this article, we report a facile "etch and dope" synthesis of Ni3+-doped WO3 nanosheets with oxygen vacancies. Through detailed experimental and theoretical studies, it is established that the abundant oxygen vacancies and the doped Ni3+ ions in the near-surface amorphous layer can synergistically optimize the surface electronic structure of WO3 and the adsorption and desorption of intermediates. Impressively, the etched WO3 nanosheets coupled with Ni3+ offer a greatly promoted photocatalytic performance of 1.78 mmol g-1 h-1, and the photoanode achieves a photocurrent density of 2.11 mA cm-2 at 1.23 V versus reversible hydrogen electrode (VRHE). This work provides a new inspiration for rational manufacture of defects and high-valence metal ions in catalysts for photocatalytic and photoelectrochemical reactions.
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Affiliation(s)
- Xinyan Feng
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Tingting Sun
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Xuefan Feng
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Limiao Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, P. R. China
| | - Yu Yang
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Fuqin Zhang
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
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31
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Salarvand V, Abedini Mohammadi M, Ahmadian F, Rajabi Kouchi F, Saghafi Yazdi M, Mostafaei A. In-situ hydrothermal synthesis of NiCo(X)Se compound on nickel foam for efficient performance of water splitting reaction in alkaline media. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Pan Z, Tang Z, Sun D, Zhan Y. Hierarchical NiCo2S4@NiMoO4 nanotube arrays on nickel foam as an advanced bifunctional electrocatalyst for efficient overall water splitting. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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33
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Wang Q, Jia Z, Li J, He Y, Yang Y, Li Y, Sun L, Shen B. Attractive Electron Delocalization Behavior of FeCoMoPB Amorphous Nanoplates for Highly Efficient Alkaline Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204135. [PMID: 36216584 DOI: 10.1002/smll.202204135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/28/2022] [Indexed: 06/16/2023]
Abstract
The rational design of high-performance and cost-effective electrocatalysts to overcome the kinetically sluggish water oxidation reaction is a grand challenge in water electrolysis. Transitional metals with incompletely filled d orbitals are expected to have intrinsic electronic interaction to promote the reaction kinetics, however, the construction of multiple active sites is still a bottleneck problem. Here, inspired by an amorphous alloy design strategy with chemical tunability, a noble-metal-free FeCoMoPB amorphous nanoplate for superior alkaline water oxidation is developed. The achieved overpotentials at current densities of 10, 100, and 500 mA cm-2 are 239, 281, and 331 mV, respectively, while retaining a reliable stability of 48 h, outperforming most currently available electrocatalysts. Experimental and theoretical results reveal that the chemical complexity of the amorphous nanoplate leads to the formation of multiple active sites that is able to greatly lower the free energy of the rate-determining step during the water oxidation reaction. Moreover, the Mo element would result in an electron delocalization behavior to promote electron redistribution at its surrounding regions for readily donating and taking electrons. This amorphous alloy design strategy is expected to stimulate the development of more efficient electrocatalysts that is applicable in energy devices, such as metal-air batteries, fuel cells, and water electrolysis.
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Affiliation(s)
- Qianqian Wang
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing, 211167, P. R. China
| | - Zhe Jia
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
| | - Jiaqi Li
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
| | - Yezeng He
- School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221116, P. R. China
| | - Yiyuan Yang
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
| | - Yongjie Li
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
| | - Ligang Sun
- School of Science, Harbin Institute of Technology, Shenzhen, 518055, P. R. China
| | - Baolong Shen
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P. R. China
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34
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Amorphous Iron-Doped Nickel Selenide Film on Nickel Foam via One-Step Electrodeposition Method for Overall Water Splitting. Electrocatalysis (N Y) 2022. [DOI: 10.1007/s12678-022-00780-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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35
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Liao Q, Liu X, Deng K, Liu P, Lv X, Tian W, Ji J. Plasma-Induced Surface Reconstruction of NiFe/Co 3O 4 Nanoarrays for High-Current and Ultrastable Oxygen Evolution and the Urea Oxidation Reaction. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qingdian Liao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xuesong Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Kuan Deng
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Peng Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xingbin Lv
- College of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, Sichuan, P. R. China
| | - Wen Tian
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Junyi Ji
- School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
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36
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Supercapacitor and oxygen evolution reaction performances based on rGO and Mn2V2O7 nanomaterials. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Electronically regulated FeOOH/c-NiMoO4 with hierarchical sandwich structure as efficient electrode for oxygen evolution and hybrid supercapacitors. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140884] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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Zhang X, Yi H, Jin M, Lian Q, Huang Y, Ai Z, Huang R, Zuo Z, Tang C, Amini A, Jia F, Song S, Cheng C. In Situ Reconstructed Zn doped Fe x Ni (1- x ) OOH Catalyst for Efficient and Ultrastable Oxygen Evolution Reaction at High Current Densities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203710. [PMID: 35961949 DOI: 10.1002/smll.202203710] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Developing FeOOH as a robust electrocatalyst for high output oxygen evolution reaction (OER) remains challenging due to its low conductivity and dissolvability in alkaline conditions. Herein, it is demonstrated that the robust and high output Zn doped NiOOH-FeOOH (Zn-Fex Ni(1-x) )OOH catalyst can be derived by electro-oxidation-induced reconstruction from the pre-electrocatalyst of Zn modified Ni metal/FeOOH film supported by nickel foam (NF). In situ Raman and ex situ characterizations elucidate that the pre-electrocatalyst undergoes dynamic reconstruction occurring on both the catalyst surface and underneath metal support during the OER process. That involves the Fe dissolution-redeposition and the merge of Zn doped FeOOH with in situ generated NiOOH from NF support and NiZn alloy nanoparticles. Benefiting from the Zn doping and the covalence interaction of FeOOH-NiOOH, the reconstructed electrode shows superior corrosion resistance, and enhanced catalytic activity as well as bonding force at the catalyst-support interface. Together with the feature of superaerophobic surface, the reconstructed electrode only requires an overpotential of 330 mV at a high-current-density of 1000 mA cm-2 and maintains 97% of its initial activity after 1000 h. This work provides an in-depth understanding of electrocatalyst reconstruction during the OER process, which facilitates the design of high-performance OER catalysts.
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Affiliation(s)
- Xian Zhang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Hao Yi
- School of Artificial Intelligence, Wuchang University of Technology, Wuhan, Hubei, 430223, China
| | - Mengtian Jin
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Qing Lian
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yu Huang
- College of Science, Hohai Univeisity, Nanjing, 210098, China
| | - Zhong Ai
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Runqing Huang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Ziteng Zuo
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chunmei Tang
- College of Science, Hohai Univeisity, Nanjing, 210098, China
| | - Abbas Amini
- Center for Infrastructure Engineering, Western Sydney University, Kingswood, NSW, 2751, Australia
| | - Feifei Jia
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Shaoxian Song
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei, 430070, China
| | - Chun Cheng
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen, 518055, China
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39
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Zhao J, Wu B, Huang X, Sun Y, Zhao Z, Ye M, Wen X. Efficient and Durable Sodium, Chloride-doped Iron Oxide-Hydroxide Nanohybrid-Promoted Capacitive Deionization of Saline Water via Synergetic Pseudocapacitive Process. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201678. [PMID: 35818682 PMCID: PMC9443451 DOI: 10.1002/advs.202201678] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/09/2022] [Indexed: 05/26/2023]
Abstract
Recently, the rational design and development of efficient faradaic deionization electrodes with high theoretical capacitance, natural abundance, and attractive conductivity have shown great promise for outstanding capacitive deionization (CDI)-based desalination applications. Herein, the construction of novel FeOOH hybrid heterostructures with Na and Cl dopants (e.g., Na-FeOOH and Cl-FeOOH) via a robust hydrothermal strategy is reported, and an asymmetric CDI cell (Na-FeOOH//Cl-FeOOH) comprising Na-FeOOH and Cl-FeOOH working as the cathode and anode, respectively, is assembled. The multiple coupling effects of the specific structural features (e.g., enriched porosity, hierarchical pore alignment, and highly open crystalline framework), enhanced electrochemical conductivity, and optimized ion-transfer property endow the FeOOH hybrid electrode with improved electrochemical performance. Impressively, the Na-FeOOH//Cl-FeOOH cell demonstrates a superior salt adsorption capacity (SACNaCl ) of 35.12 mg g-1 in a 500 mg L-1 NaCl solution, a faster removal rate, and remarkable cycling stability. Moreover, the pseudocapacitive removal mechanism from the synergetic contribution of the Na-FeOOH cathode and Cl-FeOOH anode account for the significant desalination promotion of the Na-FeOOH//Cl-FeOOH cell.
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Affiliation(s)
- Jingxuan Zhao
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
| | - Bingyao Wu
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
| | - Xinwei Huang
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
| | - Yang Sun
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
| | - Zhibo Zhao
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
- Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional Materials ResearchDepartment of PhysicsCollege of Physical Science and TechnologyXiamen UniversityXiamen361005P. R. China
| | - Meidan Ye
- Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional Materials ResearchDepartment of PhysicsCollege of Physical Science and TechnologyXiamen UniversityXiamen361005P. R. China
| | - Xiaoru Wen
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
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40
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Chen C, Long J, Shen K, Liu X, Zhang W. Monodispersed Eu 2O 3-Modified Fe 3O 4@NCG Composites as Highly Efficient and Ultra-stable Catalysts for Rechargeable Zn-Air Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:38677-38688. [PMID: 35977406 DOI: 10.1021/acsami.2c07373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Constructing highly efficient cathode catalysts for Zn-air batteries (ZABs) is an attractive research topic in sustainable energy storage area. Herein, the rare-earth metal oxide modification strategy has been proposed to construct the highly efficient and ultra-stable catalysts for ZABs. Accordingly, a graphene oxide-doped carbon-supported Eu2O3-modified Fe3O4 (Fe3O4/Eu2O3@NCG) catalyst is developed with layered Fe-Eu-MOF/GO as a precursor. Detailed characterization reveals that Fe3O4/Eu2O3@NCG possesses unique structural properties, including carbon-metal-carbon configuration, plentiful oxygen vacancies, and variable metal-active sites, which endows the catalyst with strong conductivity, high activity, and ultra-long stability. The optimal Fe3O4/Eu2O3@NCG catalyst exhibits an outstanding electrochemical performance, and the potential difference (Egap) between oxygen reduction reaction and oxygen evolution reaction is merely 0.68 V at 0.1 M KOH condition. Moreover, density functional theory calculations are employed to investigate the reaction mechanism and the synergetic effect between Fe and Eu atoms. Most importantly, the Fe3O4/Eu2O3@NCG-based aqueous ZAB delivers a high power density (218 mW/cm2), specific capacity (854 mA h/g@5 mA/cm2), and an impressive ultra-long cycle property with more than 1000 h (>6000 cycles) charge-discharge cycle life. In addition, the Fe3O4/Eu2O3@NCG-based all-solid-state ZAB also exhibits an outstanding performance, achieving >460 h cycle life (>2760 cycles) and strong practical application capability.
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Affiliation(s)
- Cheng Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, P. R. China
| | - Jilan Long
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, P. R. China
| | - Kui Shen
- Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xiaohong Liu
- National University of Singapore (Chongqing) Research Institute, Chongqing 401123, P. R. China
| | - Wei Zhang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China
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41
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Dynamic equilibrium of external Fe3+ to effectively construct catalytic surface of perovskite LaNi1-xFexO3 for water oxidation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Chen J, Xia L, Cao Q. Water-based ferrofluid with tunable stability and its significance in nuclear wastewater treatment. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128893. [PMID: 35460993 DOI: 10.1016/j.jhazmat.2022.128893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/24/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
The treatment of nuclear wastewater is one of the most urgent and arduous tasks currently, but traditional adsorption materials are significantly limited in practice due to their high demands on auxiliary operations (e.g., shaking or centrifugation) caused by poor stability or recyclability. To tackle this challenge, a water-based ferrofluid composed of magnetic nanoparticles grown in polyethylenimine branches is reported and applied to nuclear wastewater treatment. It is demonstrated that the ferrofluid can keep stable spontaneously in a wide pH range (3-11) out of their ultra-small size, strong electropositivity as well as high charge buffering capacity to achieve shaker-free adsorption, and can be magnetically separated after the neutralization of their positive charge to achieve convenient recycle. Meanwhile, it is found that the ferrofluid shows wide pH/adsorbate applicability and strong ion selectivity in radionuclides absorption. Furthermore, it is anticipated to achieve maximum adsorption capacities for U(VI), Sr(II) and Co(II) as high as 331.5, 427.8 and 759.6 mg/g, respectively. With these characteristics, this ferrofluid outperforms other reported adsorbents. In conclusion, this work provides a practical and effective radioactive wastewater treatment strategy, and enlightens the development of materials for other applications facing the dilemma of incompatible stability and recyclability.
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Affiliation(s)
- Jingge Chen
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China; State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Liangyu Xia
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China; State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Quanliang Cao
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China; State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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43
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Jing T, Zhang N, Zhang C, Mourdikoudis S, Sofer Z, Li W, Li P, Li T, Zuo Y, Rao D. Improving C–N–FeO x Oxygen Evolution Electrocatalysts through Hydroxyl-Modulated Local Coordination Environment. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Tianyun Jing
- School of Materials Science and Engineering, Jiangsu University, 212013 Zhenjiang, People’s Republic of China
| | - Ning Zhang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong, People’s Republic of China
| | - Chaonan Zhang
- School of Materials Science and Engineering, Jiangsu University, 212013 Zhenjiang, People’s Republic of China
| | - Stefanos Mourdikoudis
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Wei Li
- Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461002, People’s Republic of China
| | - Pinjiang Li
- Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461002, People’s Republic of China
| | - Tingting Li
- Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461002, People’s Republic of China
| | - Yunpeng Zuo
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 16628 Prague 6, Czech Republic
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, 77900 Olomouc, Czech Republic
| | - Dewei Rao
- School of Materials Science and Engineering, Jiangsu University, 212013 Zhenjiang, People’s Republic of China
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44
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Zhang B, Shan J, Wang X, Hu Y, Li Y. Ru/Rh Cation Doping and Oxygen-Vacancy Engineering of FeOOH Nanoarrays@Ti 3 C 2 T x MXene Heterojunction for Highly Efficient and Stable Electrocatalytic Oxygen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200173. [PMID: 35567328 DOI: 10.1002/smll.202200173] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/22/2022] [Indexed: 06/15/2023]
Abstract
Oxyhydroxides hold promise as highly-efficient non-noble electrocatalysts for the oxygen evolution reaction (OER), but their poor conductivity and structural instability greatly impede their progress. Herein, the authors develop a cation-doping and oxygenvacancy engineering strategy to fabricate Ru/Rh-doped FeOOH nanoarrays with abundant oxygen-vacancies in situ grown on Ti3 C2 Tx MXene (Ru/Rh-FeOOH@Ti3 C2 Tx ) as highly-efficient OER electrocatalysts. Benefiting from Ru/Rh-cation regulation, oxygenvacancy engineering, and heterojunction synergy between MXene and modulated FeOOH, the optimized Rh/Ru-FeOOH@Ti3 C2 Tx electrocatalysts exhibit excellent OER activities and remarkable stabilities with 100 h. Particularly, 3%Rh-FeOOH@Ti3 C2 Tx electrocatalyst only needs a 223 mV overpotential at 10 mA cm-2 and 306 mV to reach 100 mA cm-2 , which is superior to commercial IrO2 catalyst and most reported oxyhydroxide-based electrocatalysts. Further, systematically theoretical caculation, kinetics, thermodynamics, and microstructural analysis verify that the integration of Ru/Rh-cation doping and oxygen vacancy obviously enhances the intrinsic conductivity and lattice defects of FeOOH and expose more active sites, thereby decreasing the adsorption/desorption energy barrier and activation energy, and improving the specific activity and catalytic kinetics of electrocatalysts, whereas in situ hybridization with MXene strengthens the structural stability. This work clearly confirms that cationdoping and oxygen-vacancy engineering offers a joint strategy for the electronic structure modulation and design of highly-efficient inexpensive OER electrocatalysts.
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Affiliation(s)
- Bing Zhang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou Higher Education Mega Center, No. 100 Waihuan Xi Road, Guangzhou, 510006, China
| | - Jiongwei Shan
- School of Materials and Energy, Guangdong University of Technology, Guangzhou Higher Education Mega Center, No. 100 Waihuan Xi Road, Guangzhou, 510006, China
| | - Xinying Wang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou Higher Education Mega Center, No. 100 Waihuan Xi Road, Guangzhou, 510006, China
| | - Yanjie Hu
- School of Materials and Energy, Guangdong University of Technology, Guangzhou Higher Education Mega Center, No. 100 Waihuan Xi Road, Guangzhou, 510006, China
| | - Yunyong Li
- School of Materials and Energy, Guangdong University of Technology, Guangzhou Higher Education Mega Center, No. 100 Waihuan Xi Road, Guangzhou, 510006, China
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45
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Abstract
Perovskite-based electrocatalysts with compositional flexibility and tunable electronic structures have emerged as one of the promising non-noble metal candidates for oxygen evolution reaction (OER). Here, we propose a heterostructure comprising perovskite oxide (LaNiO3) nanorods and iron oxide hydroxide (FeOOH) nanosheets as an effective electrochemical catalyst for OER. The optimized 0.25Fe-LNO catalyst with an interesting 1D-2D hierarchical structure shows a low overpotential of 284 mV at 10 mA cm−2 and a small Tafel slope of 69 mV dec−1. The enhanced performance can be explained by the synergistic effect between LaNiO3 and FeOOH, resulting in an improved electrochemically active surface area, facilitated charge transfer and the optimized adsorption of OH intermediates.
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46
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Amorphous Ni-P-S@FeOOH/CC Catalyst for High Oxygen Evolution Activity: Preparation, Characterization and Modeling. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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47
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Wang Y, Wang D, Dong S, Qiao J, Zeng Z, Shao S. A visible-light-driven photoelectrochemical sensing platform based on the BiVO4/FeOOH photoanode for dopamine detection. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140207] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wen Y, Wang Z, Cai Y, Song M, Qi K, Xie X. S-scheme BiVO 4/CQDs/β-FeOOH photocatalyst for efficient degradation of ofloxacin: Reactive oxygen species transformation mechanism insight. CHEMOSPHERE 2022; 295:133784. [PMID: 35114255 DOI: 10.1016/j.chemosphere.2022.133784] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/13/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Photocatalysis technology exhibited promising application for advanced treatment of wastewater. Nevertheless, the design of efficient photocatalyst and the mechanism of free radicals in pollutant degradation still remained to be further investigated. Herein, BiVO4/CQDs/β-FeOOH photocatalyst was fabricated by electrostatic self-assembly method, which exhibited the excellent photocatalytic performance. Under visible-light irradiation, the removal rate of ofloxacin by BiVO4/CQDs/β-FeOOH (0.25 min-1) was 1.93 times than pristine BiVO4, and the removal efficiency in 15 min reached 99.21%. The perfect reusability of BiVO4/CQDs/β-FeOOH was ascribed to the persistent catalytic active centers provided by the renewable surface oxygen vacancies on the β-FeOOH. As electron transfer channels, CQDs facilitated the transfer of BiVO4 photogeneration electrons. The matched band structure allowed the construction of S-scheme heterojunctions, and the higher conduction band position was retained while the carrier separation was promoted. More importantly, this work firstly reported the phenomenon that the main reactive groups in the photocatalysis process would be directionally transformed with the change of pH conditions. Based on the analysis of capture and electron paramagnetic resonance experiments, ·O2- was the main free radicals to photodegrade OFL in neutral and alkaline conditions. However, when the solution pH turned into acidic, the photodegradation of OFL was dominated by 1O2. This innovative phenomenon was due to that acidic condition accelerated the reaction kinetics of spontaneous transformation of ·O2- to 1O2 and inhibited the direct oxidation of pollutants by ·O2-. Accordingly, this research could inspire theoretical study of free radical reaction and the design of S-scheme heterojunction photocatalysts.
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Affiliation(s)
- Yuan Wen
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Zhaowei Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China.
| | - Yonghui Cai
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Mengxi Song
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Kemin Qi
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Xiaoyun Xie
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
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Hierarchical Co(OH)2 Dendrite Enriched with Oxygen Vacancies for Promoted Electrocatalytic Oxygen Evolution Reaction. Polymers (Basel) 2022; 14:polym14081510. [PMID: 35458260 PMCID: PMC9026458 DOI: 10.3390/polym14081510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/27/2022] [Accepted: 04/04/2022] [Indexed: 11/30/2022] Open
Abstract
It is critical to develop efficient oxygen evolution reaction (OER) catalysts with high catalytic properties for overall water splitting. Electrocatalysts with enriched vacancies are crucial for enhancing the catalytic activity of OER through defect engineering. We demonstrated the dealloying method in a reducing alkaline solution using the Co5Al95 alloy foil as a precursor to produce a new oxygen-vacancy-rich cobalt hydroxide (OV−Co(OH)2) hierarchical dendrite. The as-synthesised OV−Co(OH)2 showed superior electrocatalytic activities toward OER when compared to pristine cobalt hydroxide (p–Co(OH)2), which had a low onset overpotential of only 242 mV and a small Tafel slope of 64.9 mV dec−1. Additionally, for the high surface area provided by the hierarchical dendrite, both p–Co(OH)2 and OV−Co(OH)2 showed a superior activity as compared to commercial catalysts. Furthermore, they retained good catalytic properties without remarkably decaying at an overpotential of 350 mV for 12 h. The as-made OV−Co(OH)2 has prospective applications as an anode electrocatalyst in electrochemical water-splitting technologies with the advantages of superior OER performances, large surface area and ease of preparation.
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Pandit MA, Hemanth Kumar DS, Ramadoss M, Chen Y, Muralidharan K. Template free-synthesis of cobalt-iron chalcogenides [Co 0.8Fe 0.2L 2, L = S, Se] and their robust bifunctional electrocatalysis for the water splitting reaction and Cr(vi) reduction. RSC Adv 2022; 12:7762-7772. [PMID: 35424756 PMCID: PMC8982282 DOI: 10.1039/d2ra00447j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 12/01/2022] Open
Abstract
The ease of production of materials and showing multiple applications are appealing in this modern era of advanced technology. This paper reports the synthesis of a pair of novel cobalt–iron chalcogenides [Co0.8Fe0.2S2 and Co0.8Fe0.2Se2] with enhanced electro catalytic activities. These ternary metal chalcogenides were synthesized by a one-step template-free approach via a hexamethyldisilazane (HMDS)-assisted synthetic method. Transient photocurrent (TPC) studies and electrochemical impedance spectra (EIS) of these materials showed free electron mobility. Their bifunctional activities were verified in both the electrochemical oxygen evolution reaction (OER) and in the electrochemical reduction of toxic inorganic heavy metal ions [Cr(vi)] in polluted water. The materials showed robust catalytic ability in the oxygen evolution reaction with minimum possible over potential (345 and 350 mV @ η10) as determined by linear sweep voltammetry and the lower Tafel values (52.4 and 84.5 mV dec−1) for Co0.8Fe0.2Se2 and Co0.8Fe0.2S2 respectively. Surprisingly, both the materials also showed an excellent activity towards electrochemical Cr(vi) reduction to Cr(iii). Besides the maximum current achieved for Co0.8Fe0.2S2, a minimum value for the Limit of detection (LOD) was obtained for Co0.8Fe0.2S2 (0.159 μg L−1) compared to Co0.8Fe0.2Se2 (0.196 μg L−1). We tested the durability of catalysts, the critical factor for the prolonged use of catalysts, through the recyclability measurements of these materials as catalysts. Both the catalysts presented outstanding durability and balanced electro catalytic activities for up to 1500 CV cycles, and chronoamperometry studies also confirmed exceptional stability. The enhanced catalytic activities of these materials are ascribed to the free electron movement, evidenced by the increased TPC measured and EIS. Therefore, the template-free synthesis of these electro catalysts containing non-noble metal illustrates the practical approach to develop such types of catalysts for multiple functions. The ease of production of materials and showing multiple applications are appealing in this modern era of advanced technology. Cobalt–iron chalcogenides showing multiple application is reported.![]()
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Affiliation(s)
| | | | - Manigandan Ramadoss
- School of Chemistry, University of Hyderabad Hyderabad India .,School of Electronic Science and Engineering, University of Electronic Science and Technology of China Chengdu 610054 PR China
| | - Yuanfu Chen
- School of Electronic Science and Engineering, University of Electronic Science and Technology of China Chengdu 610054 PR China
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