Heterostructured thin LaFeO3/g-C3N4 films for efficient photoelectrochemical hydrogen evolution |
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| Affiliation: | 1. Université de Lorraine, CNRS, LRGP, F-54000, Nancy, France;2. Université de Lorraine, CNRS, IJL, F-54000, Nancy, France;3. CEMHTI-UPR 3079 CNRS, Site Haute Température, 1D avenue de la Recherche Scientifique, 45071, Orléans, France;4. Université Clermont Auvergne, Institut de Chimie de Clermont Ferrand UMR 6296 CNRS/UBP/Sigma Clermont, Campus des Cézeaux, TSA 60026-CS 60026, 63178, AUBIERE Cedex, France;1. Yunnan Key Laboratory of Nanomaterials & Technology, Yunnan University, 650091 Kunming, China;2. The State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, 650106 Kunming, China;1. School of Chemical Engineering, Northwest University, Xi’an 710069, PR China;2. School of Physics, Northwest University, Xi’an 710069, PR China;3. Institute of Modern Physics, Northwest University, Xi’an 710069, PR China;1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials, Nanjing University of Information Science and Technology, Nanjing, 210044, China;2. Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, PR China;1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore;2. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;3. Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 639798, Singapore;1. Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;2. Collaborative Innovation Center of Tumor Marker Detection Technology, Equipment and Diagnosis-Therapy Integration in Universities of Shandong, Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, PR China;3. Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, OE, School of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China;1. Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430068, Hubei, China;2. School of Material Science and Engineering, Tianjin Chengjian University, Tianjin 300384, China |
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| Abstract: | The deposition of LaFeO3 at the surface of a graphitic carbon nitride (g-C3N4) film via magnetron sputtering followed by oxidation for photoelectrochemical (PEC) water splitting is reported. The LaFeO3/g-C3N4 film was investigated by various characterization techniques including SEM, XRD, Raman spectroscopy, XPS and photo-electrochemical measurements. Our results show that the hydrogen production rate of a g-C3N4 film covered by a LaFeO3 film, exhibiting both a thickness of ca. 50 nm, is of 10.8 μmol h?1 cm?2 under visible light irradiation. This value is ca. 70% higher than that measured for pure LaFeO3 and g-C3N4 films and confirms the effective separation of electron-hole pairs at the interface of LaFeO3/g-C3N4 films. Moreover, the LaFeO3/g-C3N4 films were demonstrated to be stable and retained a high activity (ca. 70%) after the third reuse. |
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| Keywords: | Lanthanum ferrite Graphitic carbon nitride Photoelectrochemical water splitting Hydrogen evolution |
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