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SUMMARY:CO2 conversion to oxygenate fuels using nanocomposite photocatalys
 ts
DTSTART:20190516T103000
DTEND:20190516T113000
DTSTAMP:20260408T071211Z
UID:c08105ee500267db0b85de897d10de1311ff24098dd21d12874bcc89
CATEGORIES:Conferences - Seminars
DESCRIPTION:Sanaz Soodi\nAs we know\, conversion of CO2 to oxygenate fuels
  in the presence of photocatalysts is a promising route for sequestration 
 of environmental concern (increasing the amount of CO2) and depletion of f
 ossil fuels and high demand for energy. So far in this field\, we have wor
 ked under two nanocomposite systems including CNT/ZnO-CuO [1] and Pd/TiO2-
 Fe2O3 [2]. CNT/ZnO-CuO as a p-n junction system applied as an efficient ph
 otocatalyst for photochemical conversion of CO2 to ethanol\, oxalic acid a
 nd formaldehyde. For each photosynthetic product\, a reaction scheme was p
 roposed on the basis of physicochemical phenomena. In the second work\, Pd
 /TiO2-Fe2O3 was employed in the CO2 photoreduction (hydrogenation) process
  and various oxygenate (C/H/O) products [including ethanol\, methanol and 
 formaldehyde as well as oxalic\, acetic and formic acids] were synthesized
  in the reaction medium. After that\, through photoelectrochemical studies
  of the solar-energy-materials\, the photon-to-electron conversion ability
  of the photocatalysts was examined. Finally\, the matter of CO2 photoconv
 ersion into oxygenate fuels/chemicals was explained in detail from photoel
 ectrochemical [semiconductor band structure and redox potential] as well a
 s mechanistic perspectives. Our present study focus on CO2 photoreduction 
 under CNT/Fe2O3/NiO nanocomposite\, this semiconductor is mesoporous and a
  p-n junction system\, which we predict that in the presence of it\, the c
 harge recombination will reduce and cause a conspicuous increase in the ph
 otocurrent and an obvious increment in the total yield of the photosynthes
 ized products. Finally we are going to analysis the products and propose a
  mechanism for various products being produced at a fixed reaction period.
  My further works include photo conversion of CO2 using efficient photocat
 alyst (high surface area\, mesoporous\, nanostructured with high absorbanc
 e for CO2 and visible light photocurrent and low impedance from oxides gro
 up including C\, N\, Ni Co elements) and apply it for photoconversion of C
 O2 and finally analysis the product in both gas and liquid phase. \n \nR
 eferences:\n[1]  M. Lashgari\, S. Soodi\, P. Zeinalkhani\, “Photocataly
 tic back-conversion of CO2 into oxygenate fuels using an efficient ZnO/CuO
 /carbon nanotube solar-energy-material: Artificial photosynthesis”\, Jou
 rnal of CO2. Utilization\, vol.18\, pp. 89-97\, 2017\n[2]  M. Lashgari\, 
 S.Soodi\, “Photocatalytic conversion of CO2 into oxygenate fuels/chemica
 ls using efficient\, eco-friendly\, nanostructured solar-energy materials
 ”\, Journal of nanoscience and nanotechnology\, 2018 (submitted)\n 
LOCATION:I17 4 K2 https://plan.epfl.ch/?room==I17%204%20K2
STATUS:CONFIRMED
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