121st General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code MAT.P-526
Subject InP nanorods/FTO glass photocathode by chemical bath deposition for CO2 to CH3OH conversion
Authors dongyun kim, Hyun Kim, Bee Lyong Yang*
School of Materials Science and Engineering, Kumoh National Institute of Technology, Korea
Abstract Ongoing research of the carbon capture and utilization (CCU) became critical challenge over the world after revealed that storage of captured carbon is not ultimate solution to reduce CO2 concentration. There are several CO2 conversion processes such as a thermal reduction with catalyst, electro-catalytic reduction, biochemical reduction and photocatalytic reduction. Especially photocatalytic CO2 reduction process is analogue to solar water splitting. That is, photocatalysts that were applied for hydrogen evolution could be also used for CO2 reduction. In this study, InP (indium phosphide) which enable to visible light absorption was vertically grown on FTO glass by chemical bath deposition instead of dominant chemical vapour deposition. Grown InP nanorods were confirmed by means of both FESEM (field emission scanning electron microscope) and TEM (transmission electron microscope). Its anisotropic growth mechanism was proposed that dissolution and specific precipitation. CO2 to CH3OH conversion test was conducted using three electrode system under visible light that of intensity 100mW/cm2. Products of CO2 reduction was collected by micro-syringe and subsequently transferred to the quartz cuvette involving chemical reagent of CH3OH to coloured solution conversion selectively for qualitative measurement by UV-Vis absorbance. Quantitative measurement of CH3OH was also conducted by HPLC (high performance liquid chromatography). Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education Science and Technology(MEST) (2017R1D1A1B03034141) *Corresponding Author: (BeeLyong Yang), (Kumoh National Institute of Technology, Korea), (blyang@kumoh.ac.kr)
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