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Synthesis and photocatalytic activity of sea urchin-shaped rutile TiO2 nanocrystals
Authors:Koichiro Hayashi  Michihiro Nakamura  Yoji Makita  Rise Fujiwara  Toshinari Kori  Kazunori Ishimura
Affiliation:1. Department of Anatomy and Cell Biology, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan;2. National Institute of Advanced Industrial Science and Technology, 2217-14 Hayashi-cho, Takamatsu, Kagawa, 761-0395, Japan;3. Aichi Industrial Technology Institute, 1-157-1 Onda-cho, Kariya, 448-0013, Japan;4. Tokushima Prefectural Industrial Technology Center, 11-2 Nishibari, Saigacho, Tokushima, 770-8021, Japan;1. Department of Materials Science, Fudan University, Shanghai, 200433, China;2. Center of Special Materials and Technology, Fudan University, Shanghai, 200433, China;1. MCMA Group, Inorganic Chemistry Department, University of Alicante, Spain;2. Surface Chemistry and Catalysis, Materials and Chemical Engineering Group, School of Engineering, University of Aberdeen, UK;1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, PR China;2. College of Science, North University of China, Taiyuan 030051, PR China;3. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China;1. School of Public Health, Chung Shan Medical University, Taichung 402, Taiwan, ROC;2. Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan, ROC;3. Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC
Abstract:Sea urchin-shaped rutile nanostructures (SUR NSs) with abundant {110} surfaces are synthesized at 60 °C under atmospheric pressure. The SUR NSs were ~ 420 nm in diameter and contain a number of needle-like rutile single crystals grown parallel to the (110) face from a single nucleus in a radial fashion. The photocatalytic activity of the SUR NSs is significantly higher than that of commercial rutile nanoparticles with the same specific surface area. This demonstrates that {110} facets are effective in enhancing photoactivity.
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