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Araújo-Cordero AM, Caddeo F, Mahmoudi B, Bron M, Wouter Maijenburg A. Direct Electrochemical Synthesis of Metal-Organic Frameworks: Cu 3 (BTC) 2 and Cu(TCPP) on Copper Thin films and Copper-Based Microstructures. Chempluschem 2024; 89:e202300378. [PMID: 37997644 DOI: 10.1002/cplu.202300378] [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: 07/23/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023]
Abstract
Cu thin films and Cu2 O microstructures were partially converted to the Metal-Organic Frameworks (MOFs) Cu3 (BTC)2 or Cu(TCPP) using an electrochemical process with a higher control and at milder conditions compared to the traditional solvothermal MOF synthesis. Initially, either a Cu thin film was sputtered, or different kinds of Cu or Cu2 O microstructures were electrochemically deposited onto a conductive ITO glass substrate. Then, these Cu thin films or Cu-based microstructures were subsequently coated with a thin layer of either Cu3 (BTC)2 or Cu(TCPP) by controlled anodic dissolution of the Cu-based substrate at room temperature and in the presence of the desired organic linker molecules: 1,3,5-benzenetricarboxylic acid (BTC) or photoactive 4,4',4'',4'''-(Porphine-5,10,15,20-tetrayl) tetrakis(benzoic acid) (TCPP) in the electrolyte. An increase in size of the Cu micro cubes with exposed planes [100] of 38,7 % for the Cu2 O@Cu3 (BTC)2 and a 68,9 % increase for the Cu2 O@Cu(TCPP) was roughly estimated. Finally, XRD, Raman spectroscopy and UV-vis absorption spectroscopy were used to characterize the initial Cu films or Cu-based microstructures, and the obtained core-shell Cu2 O@Cu(BTC) and Cu2 O@Cu(TCPP) microstructures.
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Affiliation(s)
- Ana María Araújo-Cordero
- Center for Innovation Competence SiLi-nano, Martin-Luther-Universität Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Straße 3, 06120, Halle, Germany
- Institut für Chemie, Technische Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - Francesco Caddeo
- Center for Innovation Competence SiLi-nano, Martin-Luther-Universität Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Straße 3, 06120, Halle, Germany
- Institute for Nanostructures and Solid State Physics, University of Hamburg, Luruper Chaussee 149, Bld. 600, Room 2.59, 22761, Hamburg, Germany
| | - Behzad Mahmoudi
- Center for Innovation Competence SiLi-nano, Martin-Luther-Universität Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Straße 3, 06120, Halle, Germany
| | - Michael Bron
- Institut für Chemie, Technische Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle, Germany
| | - A Wouter Maijenburg
- Center for Innovation Competence SiLi-nano, Martin-Luther-Universität Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Straße 3, 06120, Halle, Germany
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2
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Hassani Bagheri F, Khabazzadeh H, Fayazi M, Rezaeipour M. Synthesis of CuO and Cu2O nanoparticles stabilized on the magnetic Fe3O4-Montmorillonite-K10 and comparison of their catalytic activity in A3 coupling reaction. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2023. [DOI: 10.1007/s13738-023-02768-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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3
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Surfactant mediated electrodeposition of copper nanostructures for environmental electrochemistry: influence of morphology on electrochemical nitrate reduction reaction. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05279-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Lee JK, Wu S, Lim PC, Zhang Z. Spectrally Resolved Single Particle Photoluminescence Microscopy Reveals Heterogeneous Photocorrosion Activity of Cuprous Oxide Microcrystals. NANO LETTERS 2022; 22:4654-4660. [PMID: 35653432 DOI: 10.1021/acs.nanolett.2c00458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photocorrosion of cuprous oxide (Cu2O) has notably limited its application as an efficient photocatalyst. We report a facile approach to visualize in situ formation of copper and oxygen vacancies on the Cu2O surface under ambient condition. By imaging photoexcited single Cu2O particles, the resultant photoluminescence generated at Cu2O surface enable effective localization of copper and oxygen vacancies. Single particle photoluminescence imaging showed substantial heterogeneity in the rate of defect formation at different facets with the truncated corners achieving the fastest initial rate of photooxidation before subsequently changing to the face and edge sites as the photocorrosion proceeds. The generation of copper or oxygen vacancy is proportional to the photoexcitation power, while pH-dependent studies rationalized alkaline conditions for the formation of copper vacancy. Reaction in an electron-hole scavenger system showed that photooxidation and photoreduction will simultaneously occur, yet heterogeneously on the surface of Cu2O, with rate of copper vacancy formation being fastest.
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Affiliation(s)
- Jinn-Kye Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Shuyang Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Pei Chong Lim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Zhengyang Zhang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
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5
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Jiang X, Fuji M. In-Situ Preparation of Black TiO2/Cu2O/Cu Composites as an Efficient Photocatalyst for Degradation Pollutants and Hydrogen Production. Catal Letters 2022. [DOI: 10.1007/s10562-021-03894-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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6
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Steimecke M, Araújo‐Cordero AM, Dieterich E, Bron M. Probing Individual Cuprous Oxide Microcrystals towards Carbon Dioxide Reduction by using In Situ Raman‐coupled Scanning Electrochemical Microscopy. ChemElectroChem 2021. [DOI: 10.1002/celc.202101221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Matthias Steimecke
- Institut für Chemie Technische Chemie I Martin-Luther-Universität Halle-Wittenberg Von-Danckelmann-Platz 4 06120 Halle Germany
| | - Ana María Araújo‐Cordero
- Institut für Chemie Technische Chemie I Martin-Luther-Universität Halle-Wittenberg Von-Danckelmann-Platz 4 06120 Halle Germany
| | - Emil Dieterich
- Institut für Chemie Technische Chemie I Martin-Luther-Universität Halle-Wittenberg Von-Danckelmann-Platz 4 06120 Halle Germany
| | - Michael Bron
- Institut für Chemie Technische Chemie I Martin-Luther-Universität Halle-Wittenberg Von-Danckelmann-Platz 4 06120 Halle Germany
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7
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Oyarzún DP, Tello A, Sánchez J, Boulett A, Linarez Pérez OE, Martin-Trasanco R, Pizarro GDC, Flores M, Zúñiga C. Exploration of Copper Oxide Nanoneedle Electrosynthesis Applied in the Degradation of Methylene Blue. NANOMATERIALS 2021; 11:nano11112994. [PMID: 34835758 PMCID: PMC8621926 DOI: 10.3390/nano11112994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 10/14/2021] [Accepted: 11/02/2021] [Indexed: 12/04/2022]
Abstract
In this study, we report a low cost, fast and unexplored electrochemical synthesis strategy of copper oxide nanoneedles films as well as their morphological and chemical characterization. The nanostructured films were prepared using electrochemical anodization in alkaline electrolyte solutions of ethylene glycol, water and fluoride ions. The film morphology shows nanoneedle-shaped structures, with lengths up to 1–2 μm; meanwhile, high-resolution X-ray photoelectron spectroscopy (HRXPS) and spectroscopy Raman analyses indicate that a mixture of Cu(II) and Cu(I) oxides, or only Cu(I) oxide, is obtained as the percentage of water in the electrolyte solution decreases. A preliminary study was also carried out for the photocatalytic degradation of the methylene blue (MB) dye under irradiation with simulated sunlight in the presence of the nanoneedles obtained, presenting a maximum degradation value of 88% of MB and, thus, demonstrating the potential characteristics of the material investigated in the degradation of organic dyes.
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Affiliation(s)
- Diego P. Oyarzún
- Departamento de Química y Biología, Facultad de Ciencias Naturales, Universidad de Atacama, Copayapu 485, Copiapó 1531772, Chile;
- Correspondence: (D.P.O.); (C.Z.)
| | - Alejandra Tello
- Departamento de Química y Biología, Facultad de Ciencias Naturales, Universidad de Atacama, Copayapu 485, Copiapó 1531772, Chile;
| | - Julio Sánchez
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Santiago 9170022, Chile; (J.S.); (A.B.)
| | - Andrés Boulett
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Santiago 9170022, Chile; (J.S.); (A.B.)
| | - Omar E. Linarez Pérez
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC), Universidad Nacional de Córdoba, Córdoba 5000, Argentina;
| | - Rudy Martin-Trasanco
- Departamento de Química, Universidad Tecnológica Metropolitana, Avda. Las Palmeras 3360, Santiago 7810000, Chile; (R.M.-T.); (G.d.C.P.)
| | - Guadalupe del C. Pizarro
- Departamento de Química, Universidad Tecnológica Metropolitana, Avda. Las Palmeras 3360, Santiago 7810000, Chile; (R.M.-T.); (G.d.C.P.)
| | - Marcos Flores
- Laboratorio de Superficies y Nanomateriales, Facultad de Física y Ciencias Matemáticas, Universidad de Chile, Beauchef 850, Santiago 8370448, Chile;
| | - César Zúñiga
- Instituto de Ciencias Naturales, Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Americas, Manuel Montt 948, Santiago 7500975, Chile
- Correspondence: (D.P.O.); (C.Z.)
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Chen YC, Dong PH, Hsu YK. Defective Indium Tin Oxide Forms an Ohmic Back Contact to an n-Type Cu 2O Photoanode to Accelerate Charge-Transfer Kinetics for Enhanced Low-Bias Photoelectrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38375-38383. [PMID: 34357762 DOI: 10.1021/acsami.1c10679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In significant contrast to the tremendous research efforts mostly geared to addressing the severe hole accumulation at the back contact of a p-type Cu2O photocathode with a fluorine-doped tin oxide (FTO) substrate, sluggish electron transfer from an n-type Cu2O photoanode to a tin-doped indium oxide (ITO) substrate has been largely overlooked. To tackle this issue that has been reported to largely limit the photoelectrochemical performance of n-type Cu2O photoanodes at a low bias, the present contribution puts forward a strategy to introduce oxygen vacancies into the ITO substrate via an unprecedented yet facile electrochemical approach. Such defect engineering turns out to decrease the work function of the ITO substrate, which in turn approaches the conduction band extremum of n-Cu2O to highly efficiently extract the photoexcited electrons therein. Moreover, the dendritic growth of n-Cu2O is, in the meantime, interfered by the oxygen vacancy manifested as pinholes distributed over the ITO substrate, which is thereby crystallized into several small grains with augmented surface roughness that is in favor of the injection of the photoexcited hole into the electrolyte. Such facile interfacial charge-transfer kinetics leads to a significant cathodic shift amounting to 200 mV of the onset potential to 0 VAg/AgCl, whereat the n-Cu2O photoanode deposited on the defective ITO substrate delivers the maximum photocurrent density reaching 2 mA cm-2 and, more significantly, its applied bias photon-to-current efficiency (ABPE) reaches 1.1%, which is among the highest performance reported to date for a variety of state-of-the-art metal oxide-based photoanodes in the literature.
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Affiliation(s)
- Ying-Chu Chen
- China-UK Low Carbon College, Shanghai Jiao Tong University, No. 3, Yinlian Road, Lingang, Shanghai 201306, People's Republic of China
| | - Pin-Han Dong
- Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan
| | - Yu-Kuei Hsu
- Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan
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9
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Trenczek-Zajac A, Banas-Gac J, Radecka M. TiO 2@Cu 2O n-n Type Heterostructures for Photochemistry. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3725. [PMID: 34279294 PMCID: PMC8269846 DOI: 10.3390/ma14133725] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/19/2021] [Accepted: 06/29/2021] [Indexed: 11/29/2022]
Abstract
A TiO2@Cu2O semiconductor heterostructure with better photochemical response compared to TiO2 was obtained using an electrochemical deposition method of Cu2O on the surface of TiO2 nanotubes. The choice of 1D nanotubes was motivated by the possibility of achieving fast charge transfer, which is considered best suited for photochemical applications. The morphology and structural properties of the obtained heterojunction were determined using standard methods -SEM and Raman spectroscopy. Analysis of photoelectrochemical properties showed that TiO2@Cu2O heterostructures exhibit better properties resulting from an interaction with sunlight than TiO2. A close relationship between the morphology of the heterostructures and their photoproperties was also demonstrated. Investigations representing a combination of photoelectrochemical cells for hydrogen production and photocatalysis-photoelectrocatalysis-were also carried out and confirmed the observations on the photoproperties of heterostructures. Analysis of the Mott-Schottky plots as well as photoelectrochemical measurements (Iph-V, Iph-t) showed that TiO2 as well as, unusually, Cu2O exhibit n-type conductivity. On this basis, a new energy diagram of the TiO2@Cu2O system was proposed. It was found that TiO2@Cu2O n-n type heterostructure prevents the processes of photocorrosion of copper(I) oxide contained in a TiO2-based heterostructure.
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Affiliation(s)
- Anita Trenczek-Zajac
- Department of Inorganic Chemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Joanna Banas-Gac
- Institute of Electronics, Faculty of Computer Science, Electronics and Telecommunications, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Marta Radecka
- Department of Inorganic Chemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
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10
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Lee N, Liu ML, Wu MC, Chen TH, Hou CH. The effect of redox potential on the removal characteristic of divalent cations during activated carbon-based capacitive deionization. CHEMOSPHERE 2021; 274:129762. [PMID: 33548648 DOI: 10.1016/j.chemosphere.2021.129762] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/26/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
The main objective of the study is to explore the removal characteristics of Cu2+ and Zn2+ ions in activated carbon-based capacitive deionization (CDI). In this work, CDI experiments were performed to remove divalent ions (e.g., Cu2+, Zn2+, and Ca2+) from single- and multicomponent aqueous solutions. As evidenced, divalent heavy metals could be successfully removed by charging the CDI cell at 1.2 V. Notably, the preferential removal of Cu2+ ions over Zn2+ and Ca2+ ions was observed in the charging step. The removal capacities for Cu2+, Zn2+, and Ca2+ ions in a competitive environment were 29.6, 19.6, and 13.8 μmol/g, respectively. In contrast, the regeneration efficiencies for the removal of Cu2+ and Zn2+ were much lower than that of Ca2+, suggesting the occurrence of irreversible Faradaic reactions on the cathode. X-ray photoelectron spectroscopy analysis demonstrated that Cu2+ ions were reduced to Cu(I) and Zn2+ ions were transformed to ZnO/Zn(OH)2 on the cathode. Therefore, there were two major mechanisms for the removal of divalent heavy metal ions: capacitive electrosorption and cathodic electrodeposition. Specifically, the reduction potential played a crucial role in determining the removal characteristics. When regarding divalent cations with similar hydrated sizes, the divalent cation with a higher reduction potential tended to be separated by cathodic electrodeposition rather than double-layer charging, indicating the high removal selectivity of activated carbon-based CDI. This paper constitutes a significant contribution to promoting the application of CDI for contaminant sequestration.
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Affiliation(s)
- Nung Lee
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei, 10617, Taiwan
| | - Meng-Ling Liu
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei, 10617, Taiwan
| | - Min-Chen Wu
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei, 10617, Taiwan
| | - Tsai-Hsuan Chen
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei, 10617, Taiwan
| | - Chia-Hung Hou
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Sec. 4. Roosevelt Rd., Taipei, 10617, Taiwan; Water Innovation, Low Carbon and Environmental Sustainability Research Center, National Taiwan University, Taipei, 10617, Taiwan.
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11
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Liu PF, Wang C, Wang Y, Li Y, Zhang B, Zheng LR, Jiang Z, Zhao H, Yang HG. Grey hematite photoanodes decrease the onset potential in photoelectrochemical water oxidation. Sci Bull (Beijing) 2021; 66:1013-1021. [PMID: 36654246 DOI: 10.1016/j.scib.2021.02.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/19/2021] [Accepted: 01/28/2021] [Indexed: 01/20/2023]
Abstract
Photoelectrochemical (PEC) water splitting for solar energy conversion into chemical fuels has attracted intense research attention. The semiconductor hematite (α-Fe2O3), with its earth abundance, chemical stability, and efficient light harvesting, stands out as a promising photoanode material. Unfortunately, its electron affinity is too deep for overall water splitting, requiring additional bias. Interface engineering has been used to reduce the onset potential of hematite photoelectrode. Here we focus instead on energy band engineering hematite by shrinking the crystal lattice, and the water-splitting onset potential can be decreased from 1.14 to 0.61 V vs. the reversible hydrogen electrode. It is the lowest record reported for a pristine hematite photoanode without surface modification. X-ray absorption spectroscopy and magnetic properties suggest the redistribution of 3d electrons in the as-synthesized grey hematite electrode. Density function theory studies herein show that the smaller-lattice-constant hematite benefits from raised energy bands, which accounts for the reduced onset potential.
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Affiliation(s)
- Peng-Fei Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chongwu Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Wang
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD 4222, Australia
| | - Yuhang Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200438, China
| | - Li-Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Jiang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Huijun Zhao
- Centre for Clean Environment and Energy, Griffith University, Gold Coast Campus, QLD 4222, Australia.
| | - Hua-Gui Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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12
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Qiu P, Xu S, Zhang K, Jiang Z, Gong D, Chen C. Influence of deposition potential on the photoelectrochemical cathodic protection behavior of n-type Cu@Cu2O films. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.114984] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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13
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Sun YC, Sun CY, Chen ZX, Wang P, Wang HT, Yao MZ, Wu S, Xu P. Morphology control of Cu and Cu 2O through electrodeposition on conducting polymer electrodes. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01367f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we demonstrate the morphology control of Cu and Cu2O through electrodeposition on conducting polymer surface.
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Affiliation(s)
- Yan Chun Sun
- Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences/Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin)
- Ministry of Agriculture and Rural Areas
- Harbin 150070
- P. R. China
| | - Chun Yu Sun
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Zhong Xiang Chen
- Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences/Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin)
- Ministry of Agriculture and Rural Areas
- Harbin 150070
- P. R. China
| | - Peng Wang
- Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences/Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin)
- Ministry of Agriculture and Rural Areas
- Harbin 150070
- P. R. China
| | - Hai Tao Wang
- Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences/Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin)
- Ministry of Agriculture and Rural Areas
- Harbin 150070
- P. R. China
| | - Ming Zhu Yao
- Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences/Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin)
- Ministry of Agriculture and Rural Areas
- Harbin 150070
- P. R. China
- Department of Food Science and Engineering
| | - Song Wu
- Heilongjiang River Fisheries Research Institute of Chinese Academy of Fishery Sciences/Laboratory of Quality & Safety Risk Assessment for Aquatic Products (Harbin)
- Ministry of Agriculture and Rural Areas
- Harbin 150070
- P. R. China
| | - Ping Xu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
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14
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Wang P, Liu Z, Chen D, Zhang S, Fang G, Han C, Cheng Z, Tong Z. An Unassisted Tandem Photoelectrochemical Cell Based on p- and n-Cu2O Photoelectrodes. Catal Letters 2021. [DOI: 10.1007/s10562-020-03483-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Ahn J, Lee S, Kim JH, Wajahat M, Sim HH, Bae J, Pyo J, Jahandar M, Lim DC, Seol SK. 3D-printed Cu 2O photoelectrodes for photoelectrochemical water splitting. NANOSCALE ADVANCES 2020; 2:5600-5606. [PMID: 36133885 PMCID: PMC9419027 DOI: 10.1039/d0na00512f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/23/2020] [Indexed: 06/16/2023]
Abstract
Photoelectrochemical (PEC) water splitting is an alternative to fossil fuel combustion involving the generation of renewable hydrogen without environmental pollution or greenhouse gas emissions. Cuprous oxide (Cu2O) is a promising semiconducting material for the simple reduction of hydrogen from water, in which the conduction band edge is slightly negative compared to the water reduction potential. However, the solar-to-hydrogen conversion efficiency of Cu2O is lower than the theoretical value due to a short carrier-diffusion length under the effective light absorption depth. Thus, increasing light absorption in the electrode-electrolyte interfacial layer of a Cu2O photoelectrode can enhance PEC performance. In this study, a Cu2O 3D photoelectrode comprised of pyramid arrays was fabricated using a two-step method involving direct-ink-writing of graphene structures. This was followed by the electrodeposition of a Cu current-collecting layer and a p-n homojunction Cu2O photocatalyst layer onto the printed structures. The performance for PEC water splitting was enhanced by increasing the total light absorption area (A a) of the photoelectrode via controlling the electrode topography. The 3D photoelectrode (A a = 3.2 cm2) printed on the substrate area of 1.0 cm2 exhibited a photocurrent (I ph) of -3.01 mA at 0.02 V (vs. RHE), which is approximately three times higher than that of a planar photoelectrode with an A a = 1.0 cm2 (I ph = -0.91 mA). Our 3D printing strategy provides a flexible approach for the design and the fabrication of highly efficient PEC photoelectrodes.
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Affiliation(s)
- Jinhyuck Ahn
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
- Electrical Functionality Material Engineering, University of Science and Technology (UST) Changwon-si Gyeongsangnam-do 51543 Republic of Korea
| | - Sanghyeon Lee
- Department of Mechanical Engineering, The University of Hong Kong Pokfulam Road Hong Kong China
| | - Jung Hyun Kim
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
- Electrical Functionality Material Engineering, University of Science and Technology (UST) Changwon-si Gyeongsangnam-do 51543 Republic of Korea
| | - Muhammad Wajahat
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
- Electrical Functionality Material Engineering, University of Science and Technology (UST) Changwon-si Gyeongsangnam-do 51543 Republic of Korea
| | - Ho Hyung Sim
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
- Electrical Functionality Material Engineering, University of Science and Technology (UST) Changwon-si Gyeongsangnam-do 51543 Republic of Korea
| | - Jongcheon Bae
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
- School of Materials Science and Engineering, Pusan National University Busan Republic of Korea
| | - Jaeyeon Pyo
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
| | - Muhammad Jahandar
- Surface Technology Division, Korea Institute of Materials Science (KIMS) Changwon-si Gyeongsangnam-do 51508 Republic of Korea
| | - Dong Chan Lim
- Surface Technology Division, Korea Institute of Materials Science (KIMS) Changwon-si Gyeongsangnam-do 51508 Republic of Korea
| | - Seung Kwon Seol
- Nano Hybrid Technology Research Center, Korea Electrotechnology Research Institute (KERI) Changwon-si Gyeongsangnam-do 51543 Republic of Korea +82-55-280-1590 +82-55-280-1462
- Electrical Functionality Material Engineering, University of Science and Technology (UST) Changwon-si Gyeongsangnam-do 51543 Republic of Korea
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Recent Advances in the Design and Photocatalytic Enhanced Performance of Gold Plasmonic Nanostructures Decorated with Non-Titania Based Semiconductor Hetero-Nanoarchitectures. Catalysts 2020. [DOI: 10.3390/catal10121459] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Plasmonic photocatalysts combining metallic nanoparticles and semiconductors have been aimed as versatile alternatives to drive light-assisted catalytic chemical reactions beyond the ultraviolet (UV) regions, and overcome one of the major drawbacks of the most exploited photocatalysts (TiO2 or ZnO). The strong size and morphology dependence of metallic nanostructures to tune their visible to near-infrared (vis-NIR) light harvesting capabilities has been combined with the design of a wide variety of architectures for the semiconductor supports to promote the selective activity of specific crystallographic facets. The search for efficient heterojunctions has been subjected to numerous studies, especially those involving gold nanostructures and titania semiconductors. In the present review, we paid special attention to the most recent advances in the design of gold-semiconductor hetero-nanostructures including emerging metal oxides such as cerium oxide or copper oxide (CeO2 or Cu2O) or metal chalcogenides such as copper sulfide or cadmium sulfides (CuS or CdS). These alternative hybrid materials were thoroughly built in past years to target research fields of strong impact, such as solar energy conversion, water splitting, environmental chemistry, or nanomedicine. Herein, we evaluate the influence of tuning the morphologies of the plasmonic gold nanostructures or the semiconductor interacting structures, and how these variations in geometry, either individual or combined, have a significant influence on the final photocatalytic performance.
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Aktar A, Ahmmed S, Hossain J, Ismail ABM. Solution-Processed Synthesis of Copper Oxide (Cu x O) Thin Films for Efficient Photocatalytic Solar Water Splitting. ACS OMEGA 2020; 5:25125-25134. [PMID: 33043191 PMCID: PMC7542592 DOI: 10.1021/acsomega.0c02754] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
This article reports a solution-processed synthesis of copper oxide (Cu x O) to be used as a potential photocathode for solar hydrogen production in the solar water-splitting system. Cu x O thin films were synthesized through the reduction of copper iodide (CuI) thin films by sodium hydroxide (NaOH), which were deposited by the spin coating method from CuI solution in a polar aprotic solvent (acetonitrile). The phase and crystalline quality of the synthesized Cu x O thin films prepared at various annealing temperatures were investigated using various techniques. The X-ray diffraction and energy dispersive X-ray spectroscopy studies confirm the presence of Cu2O, CuO/Cu2O mixed phase, and pure CuO phase at annealing temperatures of 250, 300, and 350 °C, respectively. It is revealed from the experimental findings that the synthesized Cu x O thin films with an annealing temperature of 350 °C possess the highest crystallinity, smooth surface morphology, and higher carrier density. The highest photocurrent density of -19.12 mA/cm2 at -1 V versus RHE was achieved in the photoelectrochemical solar hydrogen production system with the use of the Cu x O photocathode annealed at a temperature of 350 °C. Therefore, it can be concluded that Cu x O synthesized by the spin coating method through the acetonitrile solvent route can be used as an efficient photocathode in the solar water-splitting system.
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Affiliation(s)
- Asma Aktar
- Solar Energy Laboratory, Department
of Electrical and Electronic Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Shamim Ahmmed
- Solar Energy Laboratory, Department
of Electrical and Electronic Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Jaker Hossain
- Solar Energy Laboratory, Department
of Electrical and Electronic Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Abu Bakar Md. Ismail
- Solar Energy Laboratory, Department
of Electrical and Electronic Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh
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18
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Zheng Q, Wei Y, Zeng X, Xia W, Lu Q, Sun J, Li Z, Fang W. Effect of bandgap alignment on the photoreduction of CO 2 into methane based on Cu 2O-decorated CuO microspheres. NANOTECHNOLOGY 2020; 31:425402. [PMID: 32575093 DOI: 10.1088/1361-6528/ab9f74] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Semiconductors' band gap alignment is important for the photoreduction of CO2 to methane. In the paper, two kinds of Cu2O-decorated CuO microspheres composed with nanoflakes were prepared by using two different methods. Their electron behaviors were studied from the XPS spectra and photoelectrochemical measurements. Both samples are p-type CuO covered with an amount of Cu2O nanoparticles on their surface. Combined with their bandgaps and flat band potentials, CuO-Mic has a well-matched bandgap alignment between Cu2O and CuO, which is favorable for the separation of photogenerated electron-hole pairs. Those photogenerated carriers are beneficial for the conversion of CO2 to CH4, as an 8-electron process for the conversion of CO2 to CH4 will consume more photogenerated electrons for the chemical reactions than that of the 2-electron process for CO2 reduction to CO. Therefore, CuO-Mic has much better photocatalytic activity for CO2 reduction to CH4 with a CH4 yield ten times higher than that of CuO-Hyd under a visible light irradiation, the CO yields of the CO2 reduction are identical.
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Affiliation(s)
- Qian Zheng
- College of Physics Science and Technology & Institute of Optoelectronic Technology, Yangzhou University, Yangzhou 225002, People's Republic of China
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Dendritic copper microstructured electrodeposits for efficient and selective electrochemical reduction of carbon dioxide into C1 and C2 hydrocarbons. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.02.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rao MPC, Kulandaivelu K, Ponnusamy VK, Wu JJ, Sambandam A. Surfactant-assisted synthesis of copper oxide nanorods for the enhanced photocatalytic degradation of Reactive Black 5 dye in wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:17438-17445. [PMID: 31119545 DOI: 10.1007/s11356-019-05434-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
In this study, copper oxide nanorods were synthesized via surfactant-assisted chemical precipitation method and characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and UV-Visible spectrometer. XRD result reveals that CuO nanorods were structured in the monoclinic phase. SEM image suggested that synthesized CuO were shaped like nanorod with approximately 20-40 nm width and 500-800 nm length. The observed band gap calculated from UV-Visible absorption studies is 1.45 eV. As-prepared CuO nanorods were applied as a photocatalyst for the degradation of textile dye Reactive Black 5 (RB-5) in aqueous solution under the presence of visible light. The result exhibited that an enhanced degradation of RB-5 was achieved around 98% within 300 min and the experimental values were well matched with the linear fit model (R2 = 0.97) and the observed rate constant found to be 5 × 10-3 min-1. Therefore, as-synthesized CuO nanorods can be applied as a potential photocatalyst material for the degradation of organic pollutants in the wastewater.
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Affiliation(s)
- Martha Purna Chander Rao
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy, 620015, India
| | - Kaviyarasan Kulandaivelu
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy, 620015, India
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
| | - Jerry J Wu
- Department of Environmental Engineering and Science, Feng Chia University, Taichung, 407, Taiwan
| | - Anandan Sambandam
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy, 620015, India.
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Chen YC, Chen YJ, Popescu R, Dong PH, Gerthsen D, Hsu YK. Defect-Cluster-Boosted Solar Photoelectrochemical Water Splitting by n-Cu 2 O Thin Films Prepared Through Anisotropic Crystal Growth. CHEMSUSCHEM 2019; 12:4859-4865. [PMID: 31469495 DOI: 10.1002/cssc.201901798] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/02/2019] [Indexed: 06/10/2023]
Abstract
Anisotropic growth of Cu2 O crystals deposited on an indium-doped tin oxide-coated glass substrate through facile electrodeposition and low-temperature calcination results in favorable solar photoelectrochemical water splitting. XRD, TEM, and SEM reveal that appreciable oxygen vacancies are populated in the Cu2 O crystals with a highly branched dendritic thin film morphology, which are further substituted by Cu atoms to form Cu antisite defects exclusively along the [111] direction. The post-thermal treatment presumably accelerates such migration of the lattice imperfections, favoring the exposure of the catalytically active (111) facets. The Cu2 O thin film derived in this way shows n-type conduction with a donor concentration in the order of 1017 cm-3 and a flat-band potential of -1.19 V vs. Ag/AgCl, which is also confirmed by Mott-Schottky analysis. The material is employed as a photoanode and delivers a photocurrent density of 2.2 mA cm-2 at a potential of 0.3 V vs. Ag/AgCl, surpassing reported values more than twofold. Such superiority mostly originates from the synergism of the selective facet exposure within the Cu2 O crystals, which have decent crystallinity, as shown by Raman and photoluminescence spectroscopy, and a favorable bandgap of 2.1 eV, as confirmed by UV/Vis spectroscopy. The n-type Cu2 O thin film reported herein holds excellent promise for solar-related applications.
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Affiliation(s)
- Ying-Chu Chen
- China-UK Low Carbon College, Shanghai Jiao Tong University, No. 3, Yinlian Road, Lingang, Shanghai, 201306, P.R. China
- Institut für Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Yen-Ju Chen
- Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien, 97401, Taiwan
| | - Radian Popescu
- Laboratorium für Elektronenmikroskopie, Karlsruhe Institute of Technology, Engesserstraße 7, 76131, Karlsruhe, Germany
| | - Pin-Han Dong
- Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien, 97401, Taiwan
| | - Dagmar Gerthsen
- Laboratorium für Elektronenmikroskopie, Karlsruhe Institute of Technology, Engesserstraße 7, 76131, Karlsruhe, Germany
| | - Yu-Kuei Hsu
- Department of Opto-Electronic Engineering, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien, 97401, Taiwan
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Lin YC, Hsu LC, Lin CY, Chiang CL, Chou CM, Wu WW, Chen SY, Lin YG. Sandwich-Nanostructured n-Cu 2O/AuAg/p-Cu 2O Photocathode with Highly Positive Onset Potential for Improved Water Reduction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:38625-38632. [PMID: 31571473 DOI: 10.1021/acsami.9b11737] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An n-Cu2O layer formed a high-quality buried junction with p-Cu2O to increase the photovoltage and thus to shift the turn-on voltage positively. Mott-Schottky measurements confirmed that the improvement benefited from a positive shift in flat-band potential. The obtained extremely positive onset potential, 0.8 VRHE in n-Cu2O/AuAg/p-Cu2O, is comparable with measurements from water reduction catalysts. The AuAg alloy sandwiched between the homojunction of n-Cu2O and p-Cu2O improved the photocatalytic performance. This alloy both served as an electron relay and promoted electron-hole pair generation in nearby semiconductors; the charge transfer between n-Cu2O and p-Cu2O in the sandwich structure was measured with X-ray absorption spectra. The proposed sandwich structure can be considered as a new direction for the design of efficient solar-related devices.
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Affiliation(s)
- Yu-Chang Lin
- Department of Material Science and Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | - Liang-Ching Hsu
- National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
| | - Chia-Yu Lin
- Department of Chemical Engineering , National Cheng Kung University , Tainan 70101 , Taiwan
| | - Chao-Lung Chiang
- National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
| | - Che-Min Chou
- National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
| | - Wen-Wei Wu
- Department of Material Science and Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
| | - San-Yuan Chen
- Department of Material Science and Engineering , National Chiao Tung University , Hsinchu 30010 , Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters , National Tsing Hua University , Hsinchu 30013 , Taiwan
| | - Yan-Gu Lin
- National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
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Ropero-Vega JL, Candal RJ, Pedraza-Avella JA, Niño-Gómez ME, Bilmes SA. Enhanced visible light photoelectrochemical performance of β-Bi2O3-TiO2/ITO thin films prepared by aqueous sol-gel. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04270-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chen R, Pang S, An H, Dittrich T, Fan F, Li C. Giant Defect-Induced Effects on Nanoscale Charge Separation in Semiconductor Photocatalysts. NANO LETTERS 2019; 19:426-432. [PMID: 30585727 DOI: 10.1021/acs.nanolett.8b04245] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Defects can markedly impact the performance of semiconductor-based photocatalysts, where the spatial separation of photogenerated charges is required for converting solar energy into fuels. However, understanding exactly how defects affect photogenerated charge separation at nanometer scale remains quite challenging. Here, using time- and space-resolved surface photovoltage approaches, we demonstrate that the distribution of surface photogenerated charges and the direction of photogenerated charge separation are determined by the defects distributed within a 100 nm surface region of a photocatalytic Cu2O particle. This is enabled by the defect-induced charge separation process, arising from the trapping of electrons at the near-surface defect states and the accumulation of holes at the surface states. More importantly, the driving force for defect-induced charge separation is greater than 4.2 kV/cm and can be used to drive photocatalytic reactions. These findings highlight the importance of near-surface defect engineering in promoting photogenerated charge separation and manipulating surface photogenerated charges; further, they open up a powerful avenue for improving photocatalytic charge separation and solar energy conversion efficiency.
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Affiliation(s)
- Ruotian Chen
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials ( iChEM) , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, Zhongshan Road 457 , Dalian 116023 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Shan Pang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials ( iChEM) , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, Zhongshan Road 457 , Dalian 116023 , China
| | - Hongyu An
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials ( iChEM) , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, Zhongshan Road 457 , Dalian 116023 , China
| | - Thomas Dittrich
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Institut für Silizium-Photovoltaik , Kekuléstr. 5 , 12489 Berlin , Germany
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials ( iChEM) , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, Zhongshan Road 457 , Dalian 116023 , China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials ( iChEM) , Dalian Institute of Chemical Physics , Chinese Academy of Sciences, Zhongshan Road 457 , Dalian 116023 , China
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25
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Christoforidis KC, Fornasiero P. Photocatalysis for Hydrogen Production and CO2Reduction: The Case of Copper‐Catalysts. ChemCatChem 2018. [DOI: 10.1002/cctc.201801198] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Paolo Fornasiero
- Department of Chemical and Pharmaceutical Sciences ICCOM-CNR and INSTMUniversity of Trieste Via L. Giorgieri 1 34127 Trieste Italy
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26
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Periasamy AP, Ravindranath R, Senthil Kumar SM, Wu WP, Jian TR, Chang HT. Facet- and structure-dependent catalytic activity of cuprous oxide/polypyrrole particles towards the efficient reduction of carbon dioxide to methanol. NANOSCALE 2018; 10:11869-11880. [PMID: 29897084 DOI: 10.1039/c8nr02117a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The preparation of cost-effective, stable catalysts for the selective reduction of carbon dioxide (CO2) to C1 products such as methanol is extremely important because methanol can be used directly as a fuel or it can be converted into other value-added products. However, the catalysts currently used for the reduction of CO2 to methanol exhibit poor selectivity, poor stability and very low faradaic efficiency. Herein, we used low-cost, stable cuprous oxide/polypyrrole (Cu2O/Ppy) particles having structures of octahedra and icosahedra (microflowers) that were prepared on linen texture (LT) papers for the selective reduction of CO2 to form a value-added single C1 product, methanol. The Cu2O/Ppy particles possessing both octahedral and microflower shapes with exposed low-index (111) facets and high-index (311) and (211) facets are denoted as Cu2O(OL-MH)/Ppy particles. The as-prepared Cu2O(OL-MH)/Ppy particles exhibited high catalytic activity and selectivity towards the electrochemical reduction of CO2 at -0.85 V vs. RHE to form methanol, with a faradaic efficiency of 93 ± 1.2% and an average methanol formation rate of 1.61 ± 0.02 μmol m-2 s-1. The X-ray photoelectron spectroscopy (XPS) analysis revealed that the pyrrolic nitrogen atoms present in the Ppy shell played a dominant role as active sites for CO2 molecules. The Raman bands of Ppy and Cu2O did not shift even after being subjected to electrolysis for several hours, suggesting superior stability of the Cu2O(OL-MH)/Ppy particles. The high resolution microscopic, spectroscopic, diffraction and electrochemical analysis results clearly revealed that the Ppy shell protected the Cu2O particles and avoided corrosion, dissolution, and structural and crystal facet changes, leading to greater stability. The low-cost, durable, flexible, and catalytically active Cu2O(OL-MH)/Ppy LT paper holds great potential for catalytic, photocatalytic and energy storage applications.
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Affiliation(s)
- Arun Prakash Periasamy
- Department of Chemistry, National Taiwan University, 1, Section 4, Roosevelt Road, Taipei 106, Taiwan.
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27
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Mezine Z, Kadri A, Hamadou L, Benbrahim N, Chaouchi A. Electrodeposition of copper oxides (CuxOy) from acetate bath. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Ye H, Wang H, Zhang B, Zhao F, Zeng B. Tremella-like ZnIn 2S 4/graphene composite based photoelectrochemical sensor for sensitive detection of dopamine. Talanta 2018; 186:459-466. [PMID: 29784388 DOI: 10.1016/j.talanta.2018.04.063] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/10/2018] [Accepted: 04/20/2018] [Indexed: 01/26/2023]
Abstract
Tremella-like ZnIn2S4 (ZISt) and flower-like microsphere ZnIn2S4 (ZISm) were synthesized via a straightforward hydrothermal method. It was found that the ZISt was superior to ZISm for photoelectrochemical (PEC) sensing because of its large surface area and high photocatalytic activity. A composite of ZISt and graphene (GR) was prepared and used for the PEC sensing of dopamine (DA). Here DA acted as an electron donor to scavenge the hole and inhibit the charge recombination. The GR enhanced visible light absorption and accelerated electron transfer, amplifying the photocurrent signal. The strong chelating coordination interaction between DA and Zn(II) in ZISt guaranteed the selective adsorption of target analyte. Thus the resulting ZISt/GR photoelectrode showed sensitive and selective PEC response to DA. Under the optimized conditions, the linear response range was from 0.01 to 20 μM, and the detection limit was down to 0.001 μM. Additionally, the sensor had good stability and reproducibility, and it could be used for the detection of DA in real samples.
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Affiliation(s)
- Huili Ye
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, PR China
| | - Hao Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, PR China
| | - Bihong Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, PR China
| | - Faqiong Zhao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, PR China
| | - Baizhao Zeng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, PR China.
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29
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Wang Y, Lou Z, Niu W, Ye Z, Zhu L. Optimization of photoelectrochemical performance in Pt-modified p-Cu 2O/n-Cu 2O nanocomposite. NANOTECHNOLOGY 2018; 29:145402. [PMID: 29451136 DOI: 10.1088/1361-6528/aaac01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
As it is expected to be one of the most promising materials for utilizing solar energy, Cu2O has attracted considerable attention with respect to the achievement of solar energy conversion. Until now, the photocurrent densities of all planar structure of the Cu2O photocathode have not even come close to the theoretical value of -14.7 mA cm-2 due to the incompatible light absorption and charge carrier diffusion lengths. Here, we have fabricated p-n Cu2O homojunction nanocomposite by multiple steps of electrochemical deposition processing with the optimization of deposition periods. The p-Cu2O/n-Cu2O nanocomposite fabricated by optimized pH (4.9) and deposition time (4 min) exhibited double the photocurrent density of that of the bare p-Cu2O photocathode. And the highest photocurrent density of nanostructured p-n Cu2O nanorod homojunction photocathode with a p-Cu2O blocking layer reached -10.0 mA cm-2 at 0 V versus the reversible hydrogen electrode under simulated AM 1.5G illumination (100 mW cm-2).
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Affiliation(s)
- Yichen Wang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
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30
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Jin C, He Z, Zhao Y, Pan Y, Wu W, Wang X, Tong G. Controllable synthesis, formation mechanism, and enhanced microwave absorption of dendritic AgFe alloy/Fe3O4 nanocomposites. CrystEngComm 2018. [DOI: 10.1039/c7ce02223a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dendritic AgFe alloy/Fe3O4 nanocomposites with tunable composition and size synthesized via a selective attachment and anisotropic growth exhibit enhanced microwave absorption.
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Affiliation(s)
- Chen Jin
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Zidong He
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Yanting Zhao
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Yefei Pan
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Wenhua Wu
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Xiaojuan Wang
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
| | - Guoxiu Tong
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- People's Republic of China
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31
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Zhang X, Zhang Y, Huang H, Cai J, Ding K, Lin S. Electrochemical fabrication of shape-controlled Cu2O with spheres, octahedrons and truncated octahedrons and their electrocatalysis for ORR. NEW J CHEM 2018. [DOI: 10.1039/c7nj04200k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Morphology-controlled synthesis of Cu2O is achieved by potentiostatic electrodeposition and it is used as an electrocatalyst for the oxygen reduction reaction.
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Affiliation(s)
- Xiaofeng Zhang
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou
- China
| | - Yi Zhang
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou
- China
| | - Huodi Huang
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou
- China
| | - Jiannan Cai
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou
- China
| | - Kaining Ding
- College of Chemistry
- Fuzhou University
- Fuzhou 350002
- China
| | - Shen Lin
- College of Chemistry and Materials
- Fujian Normal University
- Fuzhou
- China
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32
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Zhou X, Jin B, Luo J, Gu X, Zhang S. Photoreduction preparation of Cu 2 O@polydopamine nanospheres with enhanced photocatalytic activity under visible light irradiation. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.07.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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33
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Hou Y, Hu W, Gui Z, Hu Y. Effect of cuprous oxide with different sizes on thermal and combustion behaviors of unsaturated polyester resin. JOURNAL OF HAZARDOUS MATERIALS 2017; 334:39-48. [PMID: 28384556 DOI: 10.1016/j.jhazmat.2017.03.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/09/2017] [Accepted: 03/23/2017] [Indexed: 06/07/2023]
Abstract
Cuprous oxide (Cu2O) as an effective catalyst has been applied to enhance the fire safety of unsaturated polyester resin (UPR), but the particle size influence on combustion behaviors has not been previously reported. Herein, the UPR/Cu2O composites (metal oxide particles with average particle-size of 10, 100, and 200nm) were successfully synthesized by thermosetting process. The effects of Cu2O with different sizes on thermostability and combustion behaviors of UPR were characterized by TGA, MCC, TG-IR, FTIR, and SSTF. The results revel that the addition of Cu2O contributes to sufficient decomposition of oxygen-containing compounds, which is beneficial to the release of nontoxic compounds. The smallest-sized Cu2O performs the excellent catalytic decomposition effect and promotes the complete combustion of UPR, which benefits the enhancement of fire safety. While the other additives retard pyrolysis process and yield more char residue, and thus the flame retardancy of UPR composites was improved. Therefore, catalysis plays a major role for smaller-sized particles during thermal decomposition of matrix, while flame retarded effect became gradual distinctly for the larger-sized additives.
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Affiliation(s)
- Yanbei Hou
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Weizhao Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Zhou Gui
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
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34
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35
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Kartal C, Hanedar Y, Öznülüer T, Demir Ü. Stoichiometry, Morphology, and Size-Controlled Electrochemical Fabrication of Cu xO (x = 1, 2) at Underpotential. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3960-3967. [PMID: 28391680 DOI: 10.1021/acs.langmuir.7b00340] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new one-step electrochemical approach has been developed for the morphology, size, and stoichiometry-controlled synthesis of Cu2O, CuO, and Cu2O/CuO composite structures at room temperature without using surfactants, capping agents, or any other additives. The electrochemical deposition of a Cu monolayer using underpotential deposition (UPD) and the flow rate of oxygen gas bubbled through the deposition solution used for oxidation of the Cu layer are the key parameters for controlling the stoichiometry of the CuxO (x = 1, 2) structures. The morphologies, crystallinity, stoichiometries, optical properties, and photoelectrochemical properties of the as-electrodeposited Cu2O and CuO materials were analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDS), UV-vis absorption, and photoelectrochemical (PEC) techniques. The results indicated that the Cu2O and CuO materials electrodeposited on both indium tin oxide coated (ITO) quartz and gold electrodes using this new electrochemical technique exhibit high-quality single crystalline structures and high photoactivity with rapid photoelectrical response to light irradiation.
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Affiliation(s)
- Cemile Kartal
- Faculty of Sciences, Department of Chemistry, Atatürk University , 25240 Erzurum, Turkey
| | - Yeşim Hanedar
- Faculty of Sciences, Department of Chemistry, Atatürk University , 25240 Erzurum, Turkey
| | - Tuba Öznülüer
- Faculty of Sciences, Department of Chemistry, Atatürk University , 25240 Erzurum, Turkey
| | - Ümit Demir
- Faculty of Sciences, Department of Chemistry, Atatürk University , 25240 Erzurum, Turkey
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36
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Zhang M, Yu J, Zhang J, Lan Q, Dai J, Huang Y, Li G, Fan Q, Fan X, Zhou Z. Shape-controlled synthesis of Cu2O nanocrystals by one pot solution-phase reduction process. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.01.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Kumar N, Sen A, Rajendran K, Rameshbabu R, Ragupathi J, Therese HA, Maiyalagan T. Morphology and phase tuning of α- and β-MnO2 nanocacti evolved at varying modes of acid count for their well-coordinated energy storage and visible-light-driven photocatalytic behaviour. RSC Adv 2017. [DOI: 10.1039/c7ra02013a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
α and β of MnO2 nanocacti (comprising nanowires with 1–10 nm diameter self assembled by ultrathin sheets) as well as MnO2 nanorods (10–40 nm diameter) are synthesized without any seed or template.
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Affiliation(s)
- Niraj Kumar
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
- Department of Physics and Nanotechnology
| | - Arijit Sen
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
- Department of Physics and Nanotechnology
| | | | - R. Rameshbabu
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
| | - Jeevani Ragupathi
- Nanotechnology Research Center
- SRM University
- Kattankulathur-603203
- India
| | | | - T. Maiyalagan
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
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38
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Wang X, Huo X, Muhire E, Gao M. The exceptional adsorption ability and gas-detection sensitivity of Cu2O with tunable morphologies. RSC Adv 2017. [DOI: 10.1039/c7ra06453e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The systematic and delicate geometry control of Cu2O nanostructures with different size can be achieved by simply tuning the dropping speed of NH2OH HCl, the volume of solvent and the concentration of NaOH.
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Affiliation(s)
- Xing Wang
- Key Laboratory for Magnetism and Magnetic Materials of MOE
- School of Physical Science and Technology
- Lanzhou University
- 730000 Lanzhou
- China
| | - Xuejian Huo
- Key Laboratory for Magnetism and Magnetic Materials of MOE
- School of Physical Science and Technology
- Lanzhou University
- 730000 Lanzhou
- China
| | - Elisée Muhire
- Key Laboratory for Magnetism and Magnetic Materials of MOE
- School of Physical Science and Technology
- Lanzhou University
- 730000 Lanzhou
- China
| | - Meizhen Gao
- Key Laboratory for Magnetism and Magnetic Materials of MOE
- School of Physical Science and Technology
- Lanzhou University
- 730000 Lanzhou
- China
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39
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Kumar N, Bhaumik S, Sen A, Shukla AP, Pathak SD. One-pot synthesis and first-principles elasticity analysis of polymorphic MnO2 nanorods for tribological assessment as friction modifiers. RSC Adv 2017. [DOI: 10.1039/c7ra04401a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
XRD analysis of hydrothermally synthesized polymorphic MnO2 nanorods and their frictional torque when added with palm oil as against pure palm oil.
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Affiliation(s)
- Niraj Kumar
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
- Department of Physics and Nanotechnology
| | - Shubrajit Bhaumik
- Department of Mechanical Engineering
- SRM University
- Kattankulathur-603203
- India
| | - Arijit Sen
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
- Department of Physics and Nanotechnology
| | - A. Pooja Shukla
- SRM Research Institute
- SRM University
- Kattankulathur-603203
- India
- Department of Physics and Nanotechnology
| | - S. D. Pathak
- Department of Mechanical Engineering
- SRM University
- Kattankulathur-603203
- India
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40
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Sun S, Yang Q, Liang S, Yang Z. Hollow CuxO (x = 2, 1) micro/nanostructures: synthesis, fundamental properties and applications. CrystEngComm 2017. [DOI: 10.1039/c7ce01530e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this review, we comprehensively summarize the important advances in hollow CuxO micro/nanostructures, including the universal synthesis strategies, the interfacial Cu–O atomic structures as well as the intrinsic properties, and potential applications. Remarks on emerging issues and promising research directions are also discussed.
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Affiliation(s)
- Shaodong Sun
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
- School of Materials Science and Engineering
- Xi'an University of Technology
- Xi'an 710048
- People's Republic of China
| | - Qing Yang
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
- School of Materials Science and Engineering
- Xi'an University of Technology
- Xi'an 710048
- People's Republic of China
| | - Shuhua Liang
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
- School of Materials Science and Engineering
- Xi'an University of Technology
- Xi'an 710048
- People's Republic of China
| | - Zhimao Yang
- School of Science
- State Key Laboratory for Mechanical Behavior of Materials
- MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter
- Center of Suzhou Nano Science and Technology
- Xi'an Jiaotong University
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41
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Si HY, Mao CJ, Xie YM, Sun XG, Zhao JJ, Zhou N, Wang JQ, Feng WJ, Li YT. P–N depleted bulk BiOBr/α-Fe2O3 heterojunctions applied for unbiased solar water splitting. Dalton Trans 2017; 46:200-206. [DOI: 10.1039/c6dt03683j] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
P–N depleted bulk BiOBr/α-Fe2O3 heterojunction (DBH) nanostructures with the growth of (001) BiOBr facets were prepared via a simple hydrothermal method. Such DBH nanostructures show superior hydrogen evolution efficiency.
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Affiliation(s)
- Hua-Yan Si
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
- Hebei Provincial Key Laboratory of Traffic Engineering materials
| | - Chen-Jing Mao
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
- Hebei Provincial Key Laboratory of Traffic Engineering materials
| | - Ya-Meng Xie
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Xiu-Guo Sun
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Jin-Jin Zhao
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Na Zhou
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Jian-Qiang Wang
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Wen-Jie Feng
- Mechanics Engineering Department
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
| | - Yan-Ting Li
- School of Materials Science and Engineering
- Shijiazhuang Tiedao University
- Shijiazhuang 050043
- China
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42
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Ye H, Wang H, Zhao F, Zeng B. A one-pot hydrothermal synthesis of graphene/CdS:Mn photocatalyst for photoelectrochemical sensing of glutathione. RSC Adv 2017. [DOI: 10.1039/c7ra09075g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The GR/CdS:Mn composite was fabricated by a simple hydrothermal synthesis which illustrates excellent performance for the photoelectrochemical detection of glutathione.
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Affiliation(s)
- Huili Ye
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Hao Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Faqiong Zhao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Baizhao Zeng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
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43
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Facile synthesis of few-layered MoS 2 modified BiOI with enhanced visible-light photocatalytic activity. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.09.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Yuan F, Gu TT, Li XQ, Wang GL. Split photoelectrochemistry for the immunoassay of α-fetoprotein based on graphitic carbon nitride. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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45
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Bhosale MA, Karekar SC, Bhanage BM. Room Temperature Synthesis of Copper Oxide Nanoparticles: Morphological Evaluation and Their Catalytic Applications for Degradation of Dyes and C-N Bond Formation Reaction. ChemistrySelect 2016. [DOI: 10.1002/slct.201601484] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Manohar A. Bhosale
- Department of Chemistry; Institute of Chemical Technology; Matunga Mumbai- 400019 India
| | - Supriya C. Karekar
- Department of Chemistry; Institute of Chemical Technology; Matunga Mumbai- 400019 India
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46
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A Simple, Additive Free Approach for Synthesis of Cu/Cu2O Nanoparticles: Effect of Precursors in Morphology Selectivity. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1124-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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47
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Thoury M, Mille B, Séverin-Fabiani T, Robbiola L, Réfrégiers M, Jarrige JF, Bertrand L. High spatial dynamics-photoluminescence imaging reveals the metallurgy of the earliest lost-wax cast object. Nat Commun 2016; 7:13356. [PMID: 27843139 PMCID: PMC5116070 DOI: 10.1038/ncomms13356] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 09/26/2016] [Indexed: 01/03/2023] Open
Abstract
Photoluminescence spectroscopy is a key method to monitor defects in semiconductors from nanophotonics to solar cell systems. Paradoxically, its great sensitivity to small variations of local environment becomes a handicap for heterogeneous systems, such as are encountered in environmental, medical, ancient materials sciences and engineering. Here we demonstrate that a novel full-field photoluminescence imaging approach allows accessing the spatial distribution of crystal defect fluctuations at the crystallite level across centimetre-wide fields of view. This capacity is illustrated in archaeology and material sciences. The coexistence of two hitherto indistinguishable non-stoichiometric cuprous oxide phases is revealed in a 6,000-year-old amulet from Mehrgarh (Baluchistan, Pakistan), identified as the oldest known artefact made by lost-wax casting and providing a better understanding of this fundamental invention. Low-concentration crystal defect fluctuations are readily mapped within ZnO nanowires. High spatial dynamics-photoluminescence imaging holds great promise for the characterization of bulk heterogeneous systems across multiple disciplines. Photoluminescence is a powerful probe of chemical composition and structure, but it is challenging to image heterogeneous materials over large scale. Thoury et al. develop a full-field imaging approach to map two cuprous oxide phases in the earliest known lost-wax cast artefact manufactured 6,000 years ago.
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Affiliation(s)
- M Thoury
- IPANEMA, CNRS, ministère de la Culture et de la Communication, Université de Versailles Saint-Quentin-en-Yvelines, USR 3461, Université Paris-Saclay, 91128 Gif-sur-Yvette, France.,Synchrotron SOLEIL, 91128 Gif-sur-Yvette, France
| | - B Mille
- C2RMF, Palais du Louvre, 75001 Paris, France.,PréTech, CNRS, Université Paris Nanterre, UMR 7055, 92023 Nanterre, France
| | - T Séverin-Fabiani
- IPANEMA, CNRS, ministère de la Culture et de la Communication, Université de Versailles Saint-Quentin-en-Yvelines, USR 3461, Université Paris-Saclay, 91128 Gif-sur-Yvette, France.,Synchrotron SOLEIL, 91128 Gif-sur-Yvette, France
| | - L Robbiola
- TRACES, CNRS, ministère de la Culture et de la Communication, Université Toulouse-Jean Jaurès, UMR 5608, 31100 Toulouse, France
| | - M Réfrégiers
- Synchrotron SOLEIL, 91128 Gif-sur-Yvette, France
| | - J-F Jarrige
- ArScAn, CNRS, Université Paris Nanterre, Université Paris 1, ministère de la Culture et de la Communication, UMR 7041, 92023 Nanterre, France.,Institut de France, 23 quai de Conti, 75006 Paris, France
| | - L Bertrand
- IPANEMA, CNRS, ministère de la Culture et de la Communication, Université de Versailles Saint-Quentin-en-Yvelines, USR 3461, Université Paris-Saclay, 91128 Gif-sur-Yvette, France.,Synchrotron SOLEIL, 91128 Gif-sur-Yvette, France
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48
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Yu L, Li G, Zhang X, Ba X, Shi G, Li Y, Wong PK, Yu JC, Yu Y. Enhanced Activity and Stability of Carbon-Decorated Cuprous Oxide Mesoporous Nanorods for CO2 Reduction in Artificial Photosynthesis. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01455] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luo Yu
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Guojian Li
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Xiaoshu Zhang
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Xin Ba
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Guodong Shi
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Yong Li
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Po Keung Wong
- School
of Life Science, The Chinese University of Hong Kong, Shatin, NT, Hong
Kong SAR, People’s Republic of China
| | - Jimmy C. Yu
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
SAR, People’s Republic of China
| | - Ying Yu
- College
of Physical Science and Technology, Central China Normal University, Wuhan 430079, People’s Republic of China
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49
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Dasog M, Carim AI, Yalamanchili S, Atwater HA, Lewis NS. Profiling Photoinduced Carrier Generation in Semiconductor Microwire Arrays via Photoelectrochemical Metal Deposition. NANO LETTERS 2016; 16:5015-5021. [PMID: 27322391 DOI: 10.1021/acs.nanolett.6b01782] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Au was photoelectrochemically deposited onto cylindrical or tapered p-Si microwires on Si substrates to profile the photoinduced charge-carrier generation in individual wires in a photoactive semiconductor wire array. Similar experiments were repeated for otherwise identical Si microwires doped to be n-type. The metal plating profile was conformal for n-type wires, but for p-type wires was a function of distance from the substrate and was dependent on the illumination wavelength. Spatially resolved charge-carrier generation profiles were computed using full-wave electromagnetic simulations, and the localization of the deposition at the p-type wire surfaces observed experimentally correlated well with the regions of enhanced calculated carrier generation in the volumes of the microwires. This technique could potentially be extended to determine the spatially resolved carrier generation profiles in a variety of mesostructured, photoactive semiconductors.
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Affiliation(s)
- Mita Dasog
- Division of Chemistry and Chemical Engineering, ‡Division of Engineering and Applied Sciences, ∥Kavli Nanoscience Institute, and ⊥Beckman Institute, California Institute of Technology , Pasadena, California 91125, United States
| | - Azhar I Carim
- Division of Chemistry and Chemical Engineering, ‡Division of Engineering and Applied Sciences, ∥Kavli Nanoscience Institute, and ⊥Beckman Institute, California Institute of Technology , Pasadena, California 91125, United States
| | | | | | - Nathan S Lewis
- Division of Chemistry and Chemical Engineering, ‡Division of Engineering and Applied Sciences, ∥Kavli Nanoscience Institute, and ⊥Beckman Institute, California Institute of Technology , Pasadena, California 91125, United States
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50
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Qi H, Wolfe J, Fichou D, Chen Z. Cu2O Photocathode for Low Bias Photoelectrochemical Water Splitting Enabled by NiFe-Layered Double Hydroxide Co-Catalyst. Sci Rep 2016; 6:30882. [PMID: 27487918 PMCID: PMC4973245 DOI: 10.1038/srep30882] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/11/2016] [Indexed: 11/10/2022] Open
Abstract
Layered double hydroxides (LDHs) are bimetallic hydroxides that currently attract considerable attention as co-catalysts in photoelectrochemical (PEC) systems in view of water splitting under solar light. A wide spectrum of LDHs can be easily prepared on demand by tuning their chemical composition and structural morphology. We describe here the electrochemical growth of NiFe-LDH overlayers on Cu2O electrodes and study their PEC behavior. By using the modified Cu2O/NiFe-LDH electrodes we observe a remarkable seven-fold increase of the photocurrent intensity under an applied voltage as low as −0.2 V vs Ag/AgCl. The origin of such a pronounced effect is the improved electron transfer towards the electrolyte brought by the NiFe-LDH overlayer due to an appropriate energy level alignment. Long-term photostability tests reveal that Cu2O/NiFe-LDH photocathodes show no photocurrent loss after 40 hours of operation under light at −0.2 V vs Ag/AgCl low bias condition. These improved performances make Cu2O/NiFe-LDH a suitable photocathode material for low voltage H2 production. Indeed, after 8 hours of H2 production under −0.2 V vs Ag/AgCl the PEC cell delivers a 78% faradaic efficiency. This unprecedented use of Cu2O/NiFe-LDH as an efficient photocathode opens new perspectives in view of low biasd or self-biased PEC water splitting under sunlight illumination.
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Affiliation(s)
- Huan Qi
- School of Materials Science Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jonathan Wolfe
- Interdisciplinary Graduate School, Nanyang Technological University, Singapore 639798, Singapore
| | - Denis Fichou
- School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.,CNRS, UMR 8232, Institut Parisien de Chimie Moléculaire, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005, Paris, France
| | - Zhong Chen
- School of Materials Science Engineering, Nanyang Technological University, Singapore 639798, Singapore
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