Abstract
Amorphous titanium oxide/plasmonic gold nanoparticle composite powders were synthesized by a combination of the sol–gel process and ultraviolet light irradiation using light-emitting diode at room temperature. The resultant composite powders were dried at ~50 °C. These amorphous titanium oxide/gold nanoparticle composite powders were heated to 450 °C to obtain crystalline titanium oxide/gold nanoparticles. The formation and microstructure of the titanium oxide/gold nanoparticle composite powders were confirmed by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, thermo gravimetry–differential thermal analysis, and optical absorption measurements. A clear plasmonic absorption band due to typical plasmonic gold nanoparticle was observed in both composite powders.
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Acknowledgments
This work was partially supported by the “Joint Usage/Research Program on Zero-Emission Energy Research” at the Institute of Advanced Energy, Kyoto University (ZE25B-19 and ZE26B-15). T.A. also wishes to thank the “Adaptable and Seamless Technology Transfer Program through Target-driven R&D (AS231Z00944C)” of the Japan Science and Technology Agency for its partial support of this study. The authors would like to acknowledge Professor B. Jeyadevan (The University of Shiga Prefecture) for the TG–DTA measurements.
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Matsumoto, T., Akiyama, T., Banya, S. et al. Low-temperature synthesis of titanium oxide/gold nanoparticle composite powders using a combination of the sol–gel process and ultraviolet light irradiation. J Sol-Gel Sci Technol 78, 692–697 (2016). https://doi.org/10.1007/s10971-016-3990-7
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DOI: https://doi.org/10.1007/s10971-016-3990-7