Photocatalytic Behavior of Various Pt Content/TiO2 in CO2 Photoreduction Under UV Light Irradiation

Authors

  • Wanna Wannasee นักศึกษา หลักสูตรวิศวกรรมศาสตรมหาบัณฑิต สาขาวิชาวิศวกรรมสิ่งแวดล้อม คณะวิศวกรรมศาสตร์ มหาวิทยาลัยขอนแก่น
  • Pakpoom Athikaphan นักศึกษา หลักสูตรวิศวกรรมศาสตรมหาบัณทิต สาขาวิชาวิศวกรรมเคมี คณะวิศวกรรมศาสตร์ มหาวิทยาลัยขอนแก่น
  • Darika Permporn นักศึกษา หลักสูตรปรัชญาดุษฎีบัณฑิต สาขาวิชาวิศวกรรมสิ่งแวดล้อม คณะวิศวกรรมศาสตร์ มหาวิทยาลัยขอนแก่น
  • Rattabal Khunponoi อาจารย์ สาขาวิชาวิศวกรรมสิ่งแวดล้อม คณะวิศวกรรมศาสตร์ มหาวิทยาลัยขอนแก่น

Keywords:

Photoreduction CO2, Photodeposition, Platinum, Platinum/TiO2

Abstract

Photocatalytic reduction of CO2 to solar fuels is promising technology to reduce global warming problem. Various Pt contents, 0.1-1.0 %wt Pt were doped into TiO2 by photodeposition technique. The synthesized catalysts were characterized by X-ray Absorption Near Edge Spectroscopy (XANES), Transmission Electron Microscope (TEM) and UV-visible diffuse reflectance spectra (UV-DRs). The photocatalytic efficiency was performed in liquid phase of batch reactor under UV light irradiation. Main product of CO2 photoreduction was methanol. Pt-doped TiO2 showed affecting on the enhancement of CO2 photoreduction, corresponding to methanol production. The highest amount of methanol was found over 0.1 %wt Pt/TiO2.

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Published

2021-05-18

Issue

Vol. 21 No. 2 (2021)

Section

บทความวิจัย