1
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Lv L, Liu Y, Huang Y, Li T, Feng H, Wang Y. Robust construction of CeNi quantum dots/Ni-MOL nanosheets for superior photocatalytic CO 2 reduction. J Colloid Interface Sci 2024; 677:909-917. [PMID: 39126809 DOI: 10.1016/j.jcis.2024.08.016] [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: 07/02/2024] [Revised: 07/30/2024] [Accepted: 08/03/2024] [Indexed: 08/12/2024]
Abstract
Since the intensification of global environmental pollution and energy shortages, photocatalytic CO2 reduction reaction (CO2RR) has emerged as a promising strategy to convert solar energy into clean chemical energy. Herein, we construct a robust and efficient heterojunction construction photocatalyst for CO2RR, composed of the highly reactive CeNi quantum dots (CeNi QDs) and nickel metal-organic layer (Ni-MOL) ultrathin nanosheets. This design facilitates the rapid separation of photogenerated charge carriers, as confirmed by X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL) and other characterizations. Mechanistic studies with in situ diffuse reflectance Fourier transform infrared spectroscopy (in situ DRIFTS) and the d-band center calculation indicate that the propensity of photocatalyst for CO2 absorption and CO desorption, leading to high performance and selectivity. The optimized loading amount of CeNi quantum dots and modified structure result in a CO yield of 30.53 mmol·g-1 within 6 h under irradiation. This work not only paves a new and convenient way for developing high-activity quantum dot materials for CO2RR but also exploits novel avenues to fabricate more heterojunction composites for solar energy conversion.
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Affiliation(s)
- Luotian Lv
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yao Liu
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yankai Huang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Tong Li
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Han Feng
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China.
| | - Yongqing Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China.
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2
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Cui JY, Li TT, Chen L, Wang JJ. Advancing BiVO 4 Photoanode Activity for Ethylene Glycol Oxidation via Strategic pH Control. Molecules 2024; 29:2783. [PMID: 38930848 PMCID: PMC11206287 DOI: 10.3390/molecules29122783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/07/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
The photoelectrochemical (PEC) conversion of organic small molecules offers a dual benefit of synthesizing value-added chemicals and concurrently producing hydrogen (H2). Ethylene glycol, with its dual hydroxyl groups, stands out as a versatile organic substrate capable of yielding various C1 and C2 chemicals. In this study, we demonstrate that pH modulation markedly enhances the photocurrent of BiVO4 photoanodes, thus facilitating the efficient oxidation of ethylene glycol while simultaneously generating H2. Our findings reveal that in a pH = 1 ethylene glycol solution, the photocurrent density at 1.23 V vs. RHE can attain an impressive 7.1 mA cm-2, significantly surpassing the outputs in neutral and highly alkaline environments. The increase in photocurrent is attributed to the augmented adsorption of ethylene glycol on BiVO4 under acidic conditions, which in turn elevates the activity of the oxidation reaction, culminating in the maximal production of formic acid. This investigation sheds light on the pivotal role of electrolyte pH in the PEC oxidation process and underscores the potential of the PEC strategy for biomass valorization into value-added products alongside H2 fuel generation.
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Affiliation(s)
- Jun-Yuan Cui
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; (J.-Y.C.); (T.-T.L.); (L.C.)
| | - Tian-Tian Li
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; (J.-Y.C.); (T.-T.L.); (L.C.)
| | - Long Chen
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; (J.-Y.C.); (T.-T.L.); (L.C.)
| | - Jian-Jun Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; (J.-Y.C.); (T.-T.L.); (L.C.)
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
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3
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Zhang J, Song Y, Liu W, Zheng Q, Liu Y, Wu T, Li T. Enhancing the acidic oxygen evolution reaction performance of RuO 2-TiO 2by a reduction-oxidation process. NANOTECHNOLOGY 2024; 35:345703. [PMID: 38788702 DOI: 10.1088/1361-6528/ad501d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 05/24/2024] [Indexed: 05/26/2024]
Abstract
As a promising alternative to Ir based acidic oxygen evolution reaction (OER) catalysts, Ru suffers from severe fading issues. Supporting it on robust oxides such as TiO2is a simple and effective way to enhance its lifetime. Here, we find that a simple reduction-oxidation process can further improve both activity and stability of RuO2-TiO2composites at high potentials. In this process, the degree of oxidation was carefully controlled to form Ru/RuO2heterostructure to improve OER activity. Moreover, due to the oxophilicity difference of Ru and Ti, the structure of catalysts was changed from supported to embedded, which enhanced the protective effect of TiO2and mitigated the dissolution of Ru element in acidic electrolyte, making as-prepared Ru/RuO2-TiO2with better durability at all tested potentials.
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Affiliation(s)
- Jianjun Zhang
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yi Song
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Wenwei Liu
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Quan Zheng
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yu Liu
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Tianli Wu
- School of Future Technology, Henan University, Kaifeng 475004, People's Republic of China
| | - Tao Li
- School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China
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4
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Zhou J, Song D, Mergelsberg ST, Wang Y, Adhikari NM, Lahiri N, Zhao Y, Chen P, Wang Z, Zhang X, Rosso KM. Facet-dependent dispersion and aggregation of aqueous hematite nanoparticles. SCIENCE ADVANCES 2024; 10:eadi7494. [PMID: 38354235 PMCID: PMC10866548 DOI: 10.1126/sciadv.adi7494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
Nanoparticle aggregates in solution controls surface reactivity and function. Complete dispersion often requires additive sorbents to impart a net repulsive interaction between particles. Facet engineering of nanocrystals offers an alternative approach to produce monodisperse suspensions simply based on facet-specific interaction with solvent molecules. Here, we measure the dispersion/aggregation of three morphologies of hematite (α-Fe2O3) nanoparticles in varied aqueous solutions using ex situ electron microscopy and in situ small-angle x-ray scattering. We demonstrate a unique tendency of (104) hematite nanoparticles to maintain a monodisperse state across a wide range of solution conditions not observed with (001)- and (116)-dominated particles. Density functional theory calculations reveal an inert, densely hydrogen-bonded first water layer on the (104) facet that favors interparticle dispersion. Results validate the notion that nanoparticle dispersions can be controlled through morphology for specific solvents, which may help in the development of various nanoparticle applications that rely on their interfacial area to be highly accessible in stable suspensions.
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Affiliation(s)
| | | | | | - Yining Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Narendra M. Adhikari
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Nabajit Lahiri
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Yatong Zhao
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Ping Chen
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Zheming Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Kevin M. Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
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5
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Zheng Y, Wang P, Zhu S, Wu M, Zhang L, Feng C, Li D, Chang Z, Chong R. Rational Design of CoOOH/α-Fe 2O 3/SnO 2 for Boosted Photoelectrochemical Water Oxidation: The Roles of Underneath SnO 2 and Surface CoOOH. Inorg Chem 2024; 63:2745-2755. [PMID: 38241145 DOI: 10.1021/acs.inorgchem.3c04129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
Hematite (α-Fe2O3) photoanode is a promising candidate for efficient PEC solar energy conversion. However, the serious charge recombination together with the sluggish water oxidation kinetics of α-Fe2O3 still restricts its practical application in renewable energy systems. In this work, a CoOOH/α-Fe2O3/SnO2 photoanode was fabricated, in which the ultrathin SnO2 underlayer is deposited on the fluorine-doped tin oxide (FTO) substrate, α-Fe2O3 nanorod array is the absorber layer, and CoOOH nanosheet is the surface modifier, respectively. The resulting CoOOH/α-Fe2O3/SnO2 exhibited excellent PEC water splitting with a high photocurrent density of 2.05 mA cm-2 at 1.23 V vs RHE in the alkaline electrolyte, which is ca. 3.25 times that of bare α-Fe2O3. PEC characterizations demonstrated that SnO2 not only could block hole transport from α-Fe2O3 to FTO substrate but also could efficiently enhance the light-harvesting property and reduce the surface states by controlling the growth process of α-Fe2O3, while the CoOOH overlayer as cocatalysts could rapidly extract the photogenerated holes and provide catalytic active sites for water oxidation. Benefiting from the synergistic effects of SnO2 and CoOOH, the efficiency of the charge recombination and the overpotential for water oxidation of α-Fe2O3 are obviously decreased, resulting in the boosted PEC efficiency for water oxidation. The rational design and simple fabrication strategy display great potentials to be used for other PEC systems with excellent efficiency.
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Affiliation(s)
- Yuting Zheng
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Penglong Wang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Shuai Zhu
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Mingwei Wu
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Ling Zhang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Caixia Feng
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Deliang Li
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Zhixian Chang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
| | - Ruifeng Chong
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
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6
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Li TT, Cui JY, Xu M, Song K, Yin ZH, Meng C, Liu H, Wang JJ. Efficient Acidic Photoelectrochemical Water Splitting Enabled by Ru Single Atoms Anchored on Hematite Photoanodes. NANO LETTERS 2024; 24:958-965. [PMID: 38207219 DOI: 10.1021/acs.nanolett.3c04374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Photoelectrochemical (PEC) water splitting in acidic media holds promise as an efficient approach to renewable hydrogen production. However, the development of highly active and stable photoanodes under acidic conditions remains a significant challenge. Herein, we demonstrate the remarkable water oxidation performance of Ru single atom decorated hematite (Fe2O3) photoanodes, resulting in a high photocurrent of 1.42 mA cm-2 at 1.23 VRHE under acidic conditions. Comprehensive experimental and theoretical investigations shed light on the mechanisms underlying the superior activity of the Ru-decorated photoanode. The presence of single Ru atoms enhances the separation and transfer of photogenerated carriers, facilitating efficient water oxidation kinetics on the Fe2O3 surface. This is achieved by creating additional energy levels within the Fe2O3 bandgap and optimizing the free adsorption energy of intermediates. These modifications effectively lower the energy barrier of the rate-determining step for water splitting, thereby promoting efficient PEC hydrogen production.
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Affiliation(s)
- Tian-Tian Li
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
| | - Jun-Yuan Cui
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
| | - Mingxia Xu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
| | - Kepeng Song
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Zhao-Hua Yin
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
| | - Chao Meng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
- Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan 250022, P. R. China
| | - Jian-Jun Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, P. R. China
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7
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Fan X, Chen Q, Zhu F, Wang T, Gao B, Song L, He J. Preparation of Surface Dispersed WO 3/BiVO 4 Heterojunction Arrays and Their Photoelectrochemical Performance for Water Splitting. Molecules 2024; 29:372. [PMID: 38257285 PMCID: PMC10818345 DOI: 10.3390/molecules29020372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/29/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
In this work, a surface dispersed heterojunction of BiVO4-nanoparticle@WO3-nanoflake was successfully prepared by hydrothermal combined with solvothermal method. We optimized the morphology of the WO3 nanoflakes and BiVO4 nanoparticles by controlling the synthesis conditions to get the uniform BiVO4 loaded on the surface of WO3 arrays. The phase composition and morphology evolution with different reaction precursors were investigated in detail. When used as photoanodes, the WO3/BiVO4 composite exhibits superior activity with photocurrent at 3.53 mA cm-2 for photoelectrochemical (PEC) water oxidation, which is twice that of pure WO3 photoanode. The superior surface dispersion structure of the BiVO4-nanoparticle@WO3-nanoflake heterojunction ensures a large effective heterojunction area and relieves the interfacial hole accumulation at the same time, which contributes to the improved photocurrents together with the stability of the WO3/BiVO4 photoanodes.
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Affiliation(s)
- Xiaoli Fan
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China; (X.F.); (Q.C.); (F.Z.)
| | - Qinying Chen
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China; (X.F.); (Q.C.); (F.Z.)
| | - Fei Zhu
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China; (X.F.); (Q.C.); (F.Z.)
| | - Tao Wang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
| | - Bin Gao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
| | - Li Song
- School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
| | - Jianping He
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
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8
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Chen K, Qian J, Xu W, Li TT. Hierarchical Superhydrophilic/Superaerophobic Ni(OH) 2@NiFe-PBA Nanoarray Supported on Nickel Foam for Boosting the Oxygen Evolution Reaction. Inorg Chem 2024; 63:642-652. [PMID: 38131603 DOI: 10.1021/acs.inorgchem.3c03542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The design of hierarchical electrocatalysts with plentiful active sites and high mass transfer efficiency is critical to efficiently and sustainably carrying out the oxygen evolution reaction (OER), which presents a challenging and pressing need. In this study, a hierarchical Ni(OH)2@NiFe-Prussian blue analogue nanoarray grown on nickel foam (NF) [labeled as Ni(OH)2@NiFe-PBA/NF] was synthesized by combining a mild electrodeposition method with an ion-exchange strategy. The resultant Ni(OH)2@NiFe-PBA/NF displays superhydrophilic/superaerophobic properties that optimize the contact with the electrolyte, improve mass transfer efficiency, and expedite detachment of O2 bubbles during the electrocatalytic OER. Specifically, Ni(OH)2@NiFe-PBA/NF exhibits exceptional capability in the OER with low overpotentials of 224 and 240 mV at the current densities of 50 and 100 mA cm-2, respectively, accompanied by a low Tafel slope of 37.1 mV dec-1 and outstanding stability over 100 h at a fixed potential of 1.78 V vs reversible hydrogen electrode (RHE). Furthermore, Ni(OH)2@NiFe-PBA/NF demonstrates remarkable OER performance even in alkaline simulated seawater. During the OER process, active metal-OOH intermediates were formed by the partial self-reconstruction of NiFe-PBA in the heterostructure, as revealed by in situ Raman spectroscopy.
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Affiliation(s)
- Kai Chen
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Jinjie Qian
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325000, China
| | - Wei Xu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Ting-Ting Li
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
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Huang Y, Zhang L, Jiang LW, Liu XL, Tan T, Liu H, Wang JJ. Electronic Structure Regulation and Surface Reconstruction of Iron Diselenide for Enhanced Oxygen Evolution Activity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302970. [PMID: 37594726 DOI: 10.1002/smll.202302970] [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: 04/09/2023] [Revised: 07/20/2023] [Indexed: 08/19/2023]
Abstract
Regulating the electronic structure of active sites and monitoring the evolution of the active component is essential to improve the intrinsic activity of catalysts for electrochemical reactions. Herein, a highly efficient pre-electrocatalyst of iron diselenide with rich Se vacancies achieved by phosphorus doping (denoted as P-FeSe2 ) for oxygen evolution reaction (OER) is reported. Systematically experimental and theoretical results show that the formed Se vacancies with phosphorus doping can synergistically modulate the electronic structure of FeSe2 and facilitate OER kinetics with the resulting enhanced electrical conductivity and electrochemical surface area. Importantly, the in situ formed FeOOH species on the surface of the P-FeSe2 nanorods (denoted as P-FeOOH(Se)) during the OER process acts as an active component to efficiently catalyze OER and exhibits a low overpotential of 217 mV to reach 10 mA cm-2 with good durability. Promisingly, an alkaline electrolyzer assembled with P-FeOOH(Se) and Pt/C electrodes requires an ultra-low cell voltage of 1.50 V at 10 mA cm-2 for overall water splitting, which is superior to the RuO2 || Pt/C counterpart and most of the state-of-the-art electrolyzers, demonstrating the high potential of the fabricated electrocatalyst by P doping strategy to explore more highly efficient selenide-based catalysts for various reactions.
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Affiliation(s)
- Yuan Huang
- State Key Laboratory of Crystal Materials, School of Crystal Materials, Shandong University, Jinan, Shandong, 250100, China
- Shenzhen Research Institute of Shandong University, Shenzhen, Guangdong, 518057, China
| | - Li Zhang
- Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Science, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li-Wen Jiang
- State Key Laboratory of Crystal Materials, School of Crystal Materials, Shandong University, Jinan, Shandong, 250100, China
- Shenzhen Research Institute of Shandong University, Shenzhen, Guangdong, 518057, China
| | - Xiao-Long Liu
- Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Science, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ting Tan
- Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Science, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hong Liu
- State Key Laboratory of Crystal Materials, School of Crystal Materials, Shandong University, Jinan, Shandong, 250100, China
- Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan, Shandong, 250022, China
| | - Jian-Jun Wang
- State Key Laboratory of Crystal Materials, School of Crystal Materials, Shandong University, Jinan, Shandong, 250100, China
- Shenzhen Research Institute of Shandong University, Shenzhen, Guangdong, 518057, China
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10
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Paredes P, Rauwel E, Wragg DS, Rapenne L, Estephan E, Volobujeva O, Rauwel P. Sunlight-Driven Photocatalytic Degradation of Methylene Blue with Facile One-Step Synthesized Cu-Cu 2O-Cu 3N Nanoparticle Mixtures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1311. [PMID: 37110901 PMCID: PMC10144494 DOI: 10.3390/nano13081311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Sunlight-driven photocatalytic degradation is an effective and eco-friendly technology for the removal of organic pollutants from contaminated water. Herein, we describe the one-step synthesis of Cu-Cu2O-Cu3N nanoparticle mixtures using a novel non-aqueous, sol-gel route and their application in the solar-driven photocatalytic degradation of methylene blue. The crystalline structure and morphology were investigated with XRD, SEM and TEM. The optical properties of the as-prepared photocatalysts were investigated with Raman, FTIR, UV-Vis and photoluminescence spectroscopies. The influence of the phase proportions of Cu, Cu2O and Cu3N in the nanoparticle mixtures on the photocatalytic activity was also investigated. Overall, the sample containing the highest quantity of Cu3N exhibits the highest photocatalytic degradation efficiency (95%). This enhancement is attributed to factors such as absorption range broadening, increased specific surface of the photocatalysts and the downward band bending in the p-type semiconductors, i.e., Cu3N and Cu2O. Two different catalytic dosages were studied, i.e., 5 mg and 10 mg. The higher catalytic dosage exhibited lower photocatalytic degradation efficiency owing to the increase in the turbidity of the solution.
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Affiliation(s)
- Patricio Paredes
- Institute of Forestry and Engineering Sciences, Estonian University of Life Sciences, Kreutzwaldi 56/1, 51014 Tartu, Estonia; (P.P.); (E.R.)
| | - Erwan Rauwel
- Institute of Forestry and Engineering Sciences, Estonian University of Life Sciences, Kreutzwaldi 56/1, 51014 Tartu, Estonia; (P.P.); (E.R.)
| | - David S. Wragg
- Department of Chemistry and SMN, University of Oslo, 0315 Oslo, Norway;
| | - Laetitia Rapenne
- Grenoble Institute of Engineering, LMGP, University Grenoble Alpes, CNRS, F-38000 Grenoble, France;
| | - Elias Estephan
- Laboratory of Bioengineering and Biosciences, LBN, Univ Montpellier, 34193 Montpellier, France
| | - Olga Volobujeva
- Institute of Materials and Environmental Technology, Tallinn University of Technology, 19086 Tallinn, Estonia;
| | - Protima Rauwel
- Institute of Forestry and Engineering Sciences, Estonian University of Life Sciences, Kreutzwaldi 56/1, 51014 Tartu, Estonia; (P.P.); (E.R.)
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