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Abdelmoneim A, Elfayoumi MAK, Abdel-Wahab MS, Al-Enizi AM, Lee JK, Tawfik WZ. Enhanced solar-driven photoelectrochemical water splitting using nanoflower Au/CuO/GaN hybrid photoanodes. RSC Adv 2024; 14:16846-16858. [PMID: 38784418 PMCID: PMC11114097 DOI: 10.1039/d4ra01931h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024] Open
Abstract
Harnessing solar energy for large-scale hydrogen fuel (H2) production shows promise in addressing the energy crisis and ecological degradation. This study focuses on the development of GaN-based photoelectrodes for efficient photoelectrochemical (PEC) water splitting, enabling environmentally friendly H2 production. Herein, a novel nanoflower Au/CuO/GaN hybrid structure was successfully synthesized using a combination of methods including successive ionic layer adsorption and reaction (SILAR), RF/DC sputtering, and metal-organic chemical vapour deposition (MOCVD) techniques. Structural, morphological, and optical characteristics and elemental composition of the prepared samples were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectroscopy, and energy-dispersive X-ray (EDX) spectroscopy, respectively. PEC and electrochemical impedance measurements were performed for all samples. The nanoflower Au/CuO/GaN hybrid structure exhibited the highest photocurrent density of ∼4 mA cm-2 at 1.5 V vs. RHE in a Na2SO4 electrolyte with recorded moles of H2 of about 3246 μmol h-1 cm-2. By combining these three materials in a unique structure, we achieved improved performance in the conversion of solar energy into chemical energy. The nanoflower structure provides a large surface area and promotes light absorption while the Au, CuO, and GaN components contribute to efficient charge separation and transfer. This study presents a promising strategy for advancing sustainable H2 production via efficient solar-driven water splitting.
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Affiliation(s)
- Alhoda Abdelmoneim
- Department of Physics, Faculty of Science, Beni-Suef University Beni-Suef 62511 Egypt
| | - M A K Elfayoumi
- Department of Physics, Faculty of Science, Beni-Suef University Beni-Suef 62511 Egypt
| | - Mohamed Sh Abdel-Wahab
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University Beni-Suef 62511 Egypt
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia
| | - June Key Lee
- Department of Materials Science and Engineering, Chonnam National University Gwangju 61186 Republic of Korea
| | - Wael Z Tawfik
- Department of Physics, Faculty of Science, Beni-Suef University Beni-Suef 62511 Egypt
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A novel photoelectrochemical sensor based on three-dimensional rGO@Au-sensitized cauliflower-like CdS heterojunction for the effective and sensitive detection of copper (II) in pool water. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Huang L, Wang C, Yang Y, Wang Y, Li C, Xie Y, Zhao P, Fei J. A light-driven photoelectrochemical sensor for highly selective detection of hydroquinone based on type-II heterojunction formed by carbon nanotubes immobilized in 3D honeycomb CdS/SnS2. J Colloid Interface Sci 2023; 643:585-599. [PMID: 37003870 DOI: 10.1016/j.jcis.2023.03.141] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/19/2023] [Accepted: 03/22/2023] [Indexed: 03/28/2023]
Abstract
The ecological environment and public safety are seriously threatened by the typical phenolic contaminant hydroquinone (HQ). Here, using a straightforward physical mixing technique, we created an n-n heterojunction by uniformly immobilizing cadmium sulfide (CdS) nanoparticles on the surface of a three-dimensionally layered, flower-like structure made of tin sulfide (SnS2). Then, as photosensitizers, carbon nanotubes (CNTs) were added to the CdS/SnS2 complex to create a type-II heterostructure of CdS/SnS2/CNTs with synergistic effects. Subsequently, the detector HQ was bound to the modified photoelectrodes, which was accompanied by the hole oxidation of the bound HQ, leading to a significant increase in the photocurrent signal, thus allowing specific and sensitive detection of HQ. Under optimized detection conditions, the proposed photoelectrochemical sensor shows a wide detection range of 0.2 to 100 μM for HQ with a detection limit as low as 0.1 μM. The high accuracy of the sensor was demonstrated by comparison with the detection results of UV-vis spectrophotometry. In addition, the photoelectrochemical sensor exhibits good reproducibility, stability, selectivity, and specificity, providing a light-driven method to detect HQ.
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Dong Y, Xu C, Zhang L. Construction of 3D Bi/ZnSnO 3 hollow microspheres for label-free highly selective photoelectrochemical recognition of norepinephrine. NANOSCALE 2021; 13:9270-9279. [PMID: 33982739 DOI: 10.1039/d1nr00792k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herein, we reported a label-free and reliable photoelectrochemical (PEC) platform for highly selective monitoring of norepinephrine (NE) based on metallic Bi nanoparticles anchored on hollow porous ZnSnO3 microspheres (3D Bi/ZnSnO3) via a simple solvothermal strategy. The designed 3D Bi/ZnSnO3 Schottky junction exhibited a unique photoanodic response toward NE among other catechol derivatives, such as epinephrine (EP) and dopamine (DA), and effectively shielded the interference from thirteen coexisting biomolecules like uric acid (UA) and ascorbic acid (AA). High selectivity and excellent sensitivity could be correlated to the unique chelating coordination interaction between NE and Zn2+ at surface sites as well as the efficient carrier separation of Bi/ZnSnO3, thereby developing a novel "signal-on" label-free and selective strategy for NE detection. The proposed Bi/ZnSnO3-based PEC sensor achieved remarkable NE biosensing with a low detection limit of 0.68 nmol L-1 and a wide response ranging from 0.002 to 350.0 μmol L-1. The applicability of this biosensor was realized for the selective analysis of NE in human serum, human urine and injection samples, laying the foundation for the label-free PEC monitoring of NE in biological fluids.
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Affiliation(s)
- Yuanyuan Dong
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China. and College of Materials and Chemical Engineering, Heilongjiang Institute of Technology, Harbin, 150050, People's Republic of China
| | - Chenxing Xu
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China.
| | - Lei Zhang
- College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Shenyang, Liaoning 110036, People's Republic of China.
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Han X, Heuser S, Tong X, Yang N, Guo XY, Jiang X. Epitaxial Cubic Silicon Carbide Photocathodes for Visible-Light-Driven Water Splitting. Chemistry 2020; 26:3586-3590. [PMID: 31961024 PMCID: PMC7155094 DOI: 10.1002/chem.201905218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Indexed: 11/11/2022]
Abstract
Cubic silicon carbide (3C-SiC) material feature a suitable bandgap and high resistance to photocorrosion. Thus, it has been emerged as a promising semiconductor for hydrogen evolution. Here, the relationship between the photoelectrochemical properties and the microstructures of different SiC materials is demonstrated. For visible-light-derived water splitting to hydrogen production, nanocrystalline, microcrystalline and epitaxial (001) 3C-SiC films are applied as the photocathodes. The epitaxial 3C-SiC film presents the highest photoelectrochemical activity for hydrogen evolution, because of its perfect (001) orientation, high phase purity, low resistance, and negative conduction band energy level. This finding offers a strategy to design SiC-based photocathodes with superior photoelectrochemical performances.
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Affiliation(s)
- Xiuxiu Han
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Institute of Materials Engineering, University of Siegen, Siegen, 57076, Germany
| | - Steffen Heuser
- Institute of Materials Engineering, University of Siegen, Siegen, 57076, Germany
| | - Xili Tong
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China
| | - Nianjun Yang
- Institute of Materials Engineering, University of Siegen, Siegen, 57076, Germany
| | - Xiang-Yun Guo
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China.,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P. R. China
| | - Xin Jiang
- Institute of Materials Engineering, University of Siegen, Siegen, 57076, Germany
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