Photocatalytic H2 Production from Ethanol–Water Mixtures Over Pt/TiO2 and Au/TiO2 Photocatalysts: A Comparative Study

Noble metal-TiO2 nanohybrids, NM0-TiO2, (NM0 = Pt0, Pd0, Au0, Ag0) have been engineered by One-Nozzle Flame Spray Pyrolysis (ON-FSP) and Double-Nozzle Flame Spray Pyrolysis (DN-FSP), by controlling the method of noble metal deposition to the TiO2 matrix. A comparative screening of the two FSP methods was realized, using the NM0-TiO2 photocatalysts for H2 production from H2O/methanol. The results show that the DN-FSP process allows engineering of more efficient NM0-TiO2 nanophotocatalysts. This is attributed to the better surface-dispersion and narrower size-distribution of the noble metal onto the TiO2 matrix. In addition, DN-FSP process promoted the formation of intraband states in NM0-TiO2, lowering the band-gap of the nanophotocatalysts. Thus, the present study demonstrates that DN-FSP process is a highly efficient technology for fine engineering of photocatalysts, which adds up to the inherent scalability of Flame Spray Pyrolysis towards industrial-scale production of nanophotocatalysts.

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Effect of gold loading and TiO2 support composition on the activity of Au/TiO2 photocatalysts for H2 production from ethanol–water mixtures

Journal of Catalysis ◽

10.1016/j.jcat.2013.05.031 ◽

2013 ◽

Vol 305 ◽

pp. 307-317 ◽

Cited By ~ 135

Author(s):

Vedran Jovic ◽

Wan-Ting Chen ◽

Dongxiao Sun-Waterhouse ◽

Mark G. Blackford ◽

Hicham Idriss ◽

...

Keyword(s):

H2 Production ◽

Tio2 Photocatalysts ◽

Tio2 Support

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Degradation of organic pollutants using metal-doped TiO2 photocatalysts under visible light: a comparative study

10.5004/dwt.2019.24298 ◽

2019 ◽

Vol 161 ◽

pp. 275-282 ◽

Cited By ~ 5

Author(s):

Khalid Umar ◽

Tabassum Parveen ◽

Meraj Alam Khan ◽

Mohamad Nasir Mohamad Ibrahim ◽

Akil Ahmad ◽

...

Keyword(s):

Comparative Study ◽

Visible Light ◽

Organic Pollutants ◽

Tio2 Photocatalysts ◽

Doped Tio2 ◽

Metal Doped

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Comparative study of (N, Fe) doped TiO2 photocatalysts

Applied Surface Science ◽

10.1016/j.apsusc.2014.11.137 ◽

2015 ◽

Vol 327 ◽

pp. 490-497 ◽

Cited By ~ 51

Author(s):

S. Larumbe ◽

M. Monge ◽

C. Gómez-Polo

Keyword(s):

Comparative Study ◽

Tio2 Photocatalysts ◽

Doped Tio2

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Comparative study of H2 production by ethanol steam reforming on Ce2Zr1.5Co0.5O8−δ and Ce2Zr1.5Co0.47Rh0.07O8−δ: Evidence of the Rh role on the deactivation process

Catalysis Today ◽

10.1016/j.cattod.2008.04.047 ◽

2008 ◽

Vol 138 (1-2) ◽

pp. 21-27 ◽

Cited By ~ 44

Author(s):

Mirella Virginie ◽

Marcia Araque ◽

Anne-Cécile Roger ◽

Julio César Vargas ◽

Alain Kiennemann

Keyword(s):

Comparative Study ◽

Steam Reforming ◽

H2 Production ◽

Ethanol Steam Reforming ◽

Deactivation Process ◽

Ethanol Steam

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Dye-Sensitized Photocatalyst System for Water Splitting Into H2 and O2 Under Visible Light Irradiation

Solar Energy ◽

10.1115/isec2004-65070 ◽

2004 ◽

Author(s):

Ryu Abe ◽

Kazuhiro Sayama ◽

Hironori Arakawa

Keyword(s):

Visible Light ◽

Water Splitting ◽

Visible Light Irradiation ◽

Energy Gap ◽

H2 Production ◽

Light Irradiation ◽

Mixed Solution ◽

Tio2 Photocatalysts ◽

Dye Sensitized ◽

Splitting System

H2 production from a water-acetonitrile mixed solution containing iodide electron donor was investigated over dye-sensitized Pt/TiO2 photocatalysts under visible light irradiation, as a part of water splitting system using iodide redox mediator. The rates of H2 evolution were decreased with the increase of the water ratio in the mixed solutions, because of the decrease in energy gap between the redox potential of I3−/I− and the HOMO levels of the dyes, which lowing the efficiency of electron transfer from I− to dye.

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