화학공학소재연구정보센터
학회 한국재료학회
학술대회 2018년 가을 (11/07 ~ 11/09, 여수 디오션리조트)
권호 24권 2호
발표분야 B. 나노화학/바이오 재료 분과
제목 Microstructural transitions of g-C3N4 core/Cu2O shell/TiO2 nanorods by CO2 photo-conversion
초록 In this study, microstructural transition study of CO2 photo-conversion into fuel for g-C3N4 core/Cu2O shell/TiO2 NRs was performed. The purpose of this research is on the development of a multi-electron double electrodes for the synthesis of highly efficient solar CO2 conversion to methanol using hybrid nano-composite with infrared / visible absorption property. In order to realize this, it is important to study the mechanism of conversion by photo-electrochemical multi-electron(≥6e-) transfer reaction, fundamental research of adsorption and activation of dissolved CO2 forms HCO3- and CO32- ions, inhibition of H+/H2 reaction and mechanism of CO2 methanol conversion identification. To improve CO2 conversion methanol efficiency those fundamental research is important. Identification of CO2 fuel conversion mechanism was performed by E-TEM analysis using highly efficient hybrid nano-composites. In order to realize this, it is important to study CO2/H2O gas adsorption and crystallographic transform (recrystallization, grain growth, (ir-)reversible crystallization) on surface of photo-catalysts conversion into fuels, stability analysis of material for CO2 conversion reaction. Photocatalytic hybrid nano-structures were confirmed by FE-SEM and TEM. CO2 to CH3OH conversion tests were 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 GC-MS (gas chromatography-mass spectrometer).

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) (2017R1D1A1B03029669)

*Corresponding Author: (BeeLyong Yang), (Kumoh National Institute of Technology, Korea), (blyang@kumoh.ac.kr) 
  
저자 김동윤, 김현, 양비룡
소속 금오공과대
키워드 CO2 conversion; photocatalyst; ETEM analysis
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