EnglishPage

SUGIURA Takashi
Title Professor
Department Department of Chemistry and Biomolecular Science
Course Materials Chemistry Course

Research fields

Solar energy-driven water splitting is receiving considerable interest in hydrogen production as a renewable energy source. Various semiconductor materials for the photodecomposition of water have been investigated for solar energy conversion such as TiO2, TaON and BiVO4. GaN : ZnO and GaN : InN solid solution are also considered as the photoelectrochemically active material for solar energy-driven water splitting. We have reported a new technique to synthesize the nitride semiconductor particles under moderate condition, Li3N or LiNH2 were used as a high reactive solid nitrogen source to improve the reaction rate and lowering the reaction temperature. For example, a high yield and high purity GaN with wurtzite structure was synthesized. We have studied the method to synthesize GaN : ZnO and GaN : InN powders by the use of solid nitrogen sources. The photoelectrochemical properties of synthesized powders have been also investigated.
There are also of interest in microwave hydrothermal synthesis of oxide semiconductors and those photoelectrochemical characterization.

Fig1 Solar energy-driven water splitting by the use of photocatalyst Fig2 TEM photograph of gallium nitride (GaN) powder synthesized by the use of solid nitrogen source

Research Keywords

photoelectrochemistry photocatalyst dye-sensitized solar cell

Details page