2020 Fiscal Year Research-status Report
TNTZO nanotubes photocatalyst fabricated by one-step anodization method
| Project/Area Number |
18K14085
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
陳 君怡 東京工業大学, 科学技術創成研究院, 特任助教 (90707473)
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| Project Period (FY) |
2018-04-01 – 2023-03-31
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| Keywords | anodization / nanotubes / photocatalyst / TNTZ / visible light absorbing |
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| Outline of Annual Research Achievements |
By performing electrochemical anodization on Ti29Nb13Ta4.6Zr alloys, quaternary Ti-Nb-Ta-Zr-O (TNTZO) mixed-oxide nanotube arrays with controllable geometric features were prepared. Compared with pristine TiO2, the TNTZO photoanodes exhibited noticeably enhanced photoactivity toward solar water splitting. The analytic results of time-resolved PL, EIS, and Voc decay measurements manifest that the superior photoactivity of TNTZO originated from the introduction of Nd, Ta, and Zr elements, which enhanced the amount of accessible charge carriers, modified the electronic structure, and improved the hole-transfer kinetics for expediting water splitting.
A paper entitled "Mechanistic Insights into Photodegradation of Organic Dyes Using Heterostructure Photocatalysts" was published in Catalyst in 2019, and this paper is selected as best paper award in 2021.
3 Papers were published in 2020. A paper entitled "Reduced graphene oxides-wrapped ZnO with notable photocatalytic property" was published in Journal of the Taiwan Institute of Chemical Engineers. Another paper entitled“Incorporating graphene quantum dots to enhance the photoactivity of CdSe-sensitized TiO2 nanorods for solar hydrogen production”was published in Journal of Materials Chemistry in 2020, and was selected as the back cover story. A invited review paper entitled "Near infrared-driven photoelectrochemical water splitting: Review and future prospects" was published in Arabian Journal of Chemistry in 2020.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
I finish my childcare leave in April of 2020 and come back to work in May of 2020. Although COVID happens in 2020, my colleague in Tokyo Tech and Prof. Hsu in NCTU in Taiwan we are still conducting our cooperative research hence I still have 3 publications in 2020.
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| Strategy for Future Research Activity |
Further optimization of the anodization process is needed. The first priority will be controlling morphology and composition of the mixed oxide.
Then characterization of the mixed oxide photocatalyst will be evaluated by a new oxygen production rate measurement system developed in my lab.
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| Causes of Carryover |
Upgrade a new oxygen production rate measurement system developed in my lab is the reason for incurring amount to be used next fiscal year.
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