scholarly journals Kinetic Assessment and Numerical Modeling of Photocatalytic Water Splitting toward Efficient Solar Hydrogen Production

2012 ◽  
Vol 85 (6) ◽  
pp. 647-655 ◽  
Author(s):  
Takashi Hisatomi ◽  
Tsutomu Minegishi ◽  
Kazunari Domen
Keyword(s):  
Numerical Modeling ◽  
Hydrogen Production ◽  
Water Splitting ◽  
Solar Hydrogen ◽  
Photocatalytic Water Splitting ◽  
Kinetic Assessment ◽  
Solar Hydrogen Production

scholarly journals Unbiased spontaneous solar hydrogen production using stable TiO2–CuO composite nanofiber photocatalysts

RSC Advances ◽  
2018 ◽  
Vol 8 (65) ◽  
pp. 37219-37228 ◽  
Author(s):  
Menna M. Hasan ◽  
Nageh K. Allam
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Water Splitting ◽  
Composite Nanofibers ◽  
Low Cost ◽  
Solar Hydrogen ◽  
Photocatalytic Water Splitting ◽  
Composite Nanofiber ◽  
Solar Hydrogen Production ◽  
Visible Light Photocatalytic

We report on the optimization of electrospun TiO2–CuO composite nanofibers as low-cost and stable photocatalysts for visible-light photocatalytic water splitting.

H2 Generation by Two-Step Water Splitting With CeO2-MOx Using Concentrated Solar Thermal Energy

Solar Energy ◽  
2006 ◽  
Author(s):  
Hiroshi Kaneko ◽  
Hideyuki Ishihara ◽  
Takao Miura ◽  
Hiromitsu Nakajima ◽  
Noriko Hasegawa ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Thermal Energy ◽  
Infrared Imaging ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Solar Simulator ◽  
Solar Hydrogen ◽  
H2 Generation ◽  
Solar Hydrogen Production

CeO2-MOx (M = Mn, Fe, Ni, Cu) reactive ceramics, having high melting points and high conductivities of O2−, were synthesized with the combustion method from their nitrates for solar hydrogen production. The prepared CeO2-MOx samples were solid solutions between CeO2 and MOx with the fluorite structure through XRD. Two-step water splitting reactions with CeO2-MOx reactive ceramics proceeded at 1573–1773K for the O2 releasing step and at 1273K for the H2 generation step by irradiation of infrared imaging furnace as a solar simulator. The amounts of O2 evolved in the O2 releasing reaction with CeO2-MOx and CeO2 systems increased with the increase of the reaction temperature. The amounts of H2 evolved in the H2 generation reaction with CeO2-MOx systems except for M = Cu were more than that of CeO2 system after the O2 releasing reaction at the temperatures of 1673 and 1773K. The largest amount of H2 was generated with CeO2-NiO after the O2 releasing reaction at 1573, 1673 and 1773K. The O2 releasing reaction at 1673K and H2 generation reaction at 1273K with CeO2-Fe2O3 were repeated four times with the evolving of O2 (1.3cm3/g-sample) and H2 (2.3cm3/g-sample) gases, respectively. The possibility of solar hydrogen production with CeO2-MOx (M = Mn, Fe, Ni) reactive ceramics system by using concentrated solar thermal energy was suggested.

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