Electrochemically synthesized CdS nanoparticle-modified TiO2 nanotube-array photoelectrodes: Preparation,characterization, and application to photoelectrochemical cells |
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| Affiliation: | 1. Department of Electrical Engineering, Department of Materials Science and Engineering, The Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA;2. Department of Engineering Science, University of Patras, 26504 Patras, Greece;1. Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, 16426, Indonesia;2. Agency for the Assessment and Application Technology, Puspiptek, Serpong, Tangerang Selatan, 15320, Indonesia;1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China;2. School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China;1. Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, Hubei, China;2. School of Physics and Electronic-Information Engineering, Hubei Engineering University, Xiaogan 432000, Hubei, China |
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| Abstract: | A novel electrodeposited CdS nanoparticle-modified highly-ordered TiO2 nanotube-array photoelectrode and its application to photoelectrochemical cells is reported. Results show formation of a thin, nanoparticulate CdS layer, comprised of sphere-like 10–20 nm diameter nanoparticles, on the anodic synthesized TiO2 nanotube-array (inner diameter of 70 nm, wall thickness 25 nm and ca. 400 nm length) electrode. The resulting CdS–TiO2 photoelectrode has an as-fabricated bandgap of 2.53, and 2.41 eV bandgap after sintering at 350 °C in N2 ambient. Photoelectrochemical properties are described in detail. |
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