Immobilizing semiconductor particles by occlusion electrosynthesis in an oxide film matrix: the titania model case |
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| Institution: | 1. Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019-0065, USA;2. Department of Electrical Engineering, Kyushu Institute of Technology, Tobata-ku, Kitakyushu 804-8550, Japan;1. Food Colour and Quality Laboratory, Department of Nutrition and Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain;2. Department of Analytical Chemistry, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain;3. Molecular Nutrition Group, Department of Food and Nutritional Sciences, School of Chemistry, Food and Pharmacy, University of Reading, Reading RG6 6AP, United Kingdom;1. Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193, Bellaterra, Barcelona, Spain;2. Institut d’Investigacions Biomèdiques de Barcelona (IIBB-CSIC); Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS). c/Rosselló 161, 08036 Barcelona, Spain;3. CIBER Epidemiología y Salud Pública (CIBERESP), Spain;1. Institute of Human Nutrition and Food Science, Division of Food Technology, Kiel University, 24118 Kiel, Germany;2. Department of Safety and Quality of Milk and Fish Products, Max Rubner‐Institut, Kiel, Germany;1. College of Urban and Environmental Sciences, Laboratory for Earth Surface Processes, Sino-French Institute for Earth System Science, Peking University, Beijing, 100871, China;2. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China;3. Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Greater Bay Area, Southern University of Science and Technology, Shenzhen, 518055, China;1. School of Molecular and Life Sciences - Curtin University, GPO Box U1987, Perth, WA, 6845, Australia;2. BIOTEC Medical Molecular Biotechnology Research Group - National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Road, Khlong Luang, Pathum Thani, 12120, Thailand;3. Epichem Pty Ltd. Suite 5, 3 Brodie-Hall Drive Bentley, WA, 6102, Australia;4. Curtin Medical School - Curtin University, GPO Box U1987, Perth, WA, 6845, Australia |
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| Abstract: | An occlusion electrosynthesis method for preparing semiconductor-based composite films, is illustrated by dispersing Degussa P-25 titania particles in a titania film matrix supported on a transparent conducting oxide (TCO) electrode. The titania film matrix was cathodically deposited on the TCO surface. The resultant composite film has superior photocatalytic and photoelectrochemical properties relative to an electrosynthesized titania film containing no occluded particles. An important feature of the methodology described here is that the semiconductor particles can be separately prepared, optimized or otherwise tailored for a specific application, prior to their occlusion within the continuous phase matrix. |
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