Experimental study on direct solar photocatalytic water splitting for hydrogen production using surface uniform concentrators

For many decades hydrogen production from water by photocatalytic methods has been pursued over a variety of semiconductor powder catalysts featuring many structures and compositions. The stoichiometric formation of molecular hydrogen and oxygen has stayed largely elusive.

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Sunlight-driven photocatalytic hydrogen production from water using metal-doped strontium titanate perovskite

10.26434/chemrxiv.11466129.v2 ◽

2020 ◽

Author(s):

Pushkal Sharma ◽

Cheng-Ting Lee ◽

Jeffrey Chi-Sheng Wu

Keyword(s):

Hydrogen Production ◽

Water Splitting ◽

Strontium Titanate ◽

Experimental Studies ◽

Light Response ◽

Theoretical Studies ◽

Photocatalytic Water Splitting ◽

Visible Light Response ◽

Sacrificial Agent ◽

Metal Doped

<div>The effects of various metal dopants on the photocatalytic water splitting activity of SrTiO<sub>3</sub> -based photocatalysts were investigated using experimental studies. The SrTiO<sub>3</sub>:Rh (1%) has been found to give the best efficiency in water splitting out of the various metal-doped samples studied. However, the same host doped with other metal dopants such as Fe, V, Ga, and Sb leads to negligible hydrogen evolution even when at least Fe has a better visible light response. Our results accompanied by previously conducted theoretical studies by our group explain the high photocatalytic water splitting activity of Rh doped SrTiO<sub>3 </sub>. Furthermore, the effects of the amount of catalyst, the proportion of sacrificial agent and pH were studied for the SrTiO<sub>3</sub>:Rh (1 mol%) along with studying its activity with seawater.</div>

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Green Hydrogen Production in an Optofluidic Planar Microreactor via Photocatalytic Water Splitting under Visible/Simulated Sunlight Irradiation

Energy & Fuels ◽

10.1021/acs.energyfuels.1c02686 ◽

2021 ◽

Author(s):

Laxmi Prasad Rao Pala ◽

Nageswara Rao Peela

Keyword(s):

Hydrogen Production ◽

Water Splitting ◽

Simulated Sunlight ◽

Sunlight Irradiation ◽

Photocatalytic Water Splitting

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Role of graphene in photocatalytic water splitting for hydrogen production

Graphene-Based Nanotechnologies for Energy and Environment ◽

10.1016/b978-0-12-815811-1.00005-3 ◽

2019 ◽

pp. 81-108

Author(s):

Mohamed I. Fadlalla ◽

Sundaram Ganesh Babu

Keyword(s):

Hydrogen Production ◽

Water Splitting ◽

Photocatalytic Water Splitting

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Visible light photocatalytic water splitting for hydrogen production from N-TiO2 rice grain shaped electrospun nanostructures

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2011.12.015 ◽

2012 ◽

Vol 37 (10) ◽

pp. 8897-8904 ◽

Cited By ~ 116

Author(s):

Veluru Jagadeesh Babu ◽

Manippady K. Kumar ◽

Appukuttan Sreekumaran Nair ◽

Tan Lee Kheng ◽

Suleyman I. Allakhverdiev ◽

...

Keyword(s):

Hydrogen Production ◽

Visible Light ◽

Water Splitting ◽

Rice Grain ◽

Photocatalytic Water Splitting ◽

Visible Light Photocatalytic

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Experimental Study for HIx Concentration by Electro-Electrodialysis (EED) Cells in the Water Splitting Sulfur-Iodine Thermochemical Cycle

ChemEngineering ◽

10.3390/chemengineering3020050 ◽

2019 ◽

Vol 3 (2) ◽

pp. 50 ◽

Cited By ~ 1

Author(s):

Giampaolo Caputo ◽

Irena Balog ◽

Alberto Giaconia ◽

Salvatore Sau ◽

Alfonso Pozio

Keyword(s):

Experimental Study ◽

Hydrogen Production ◽

Water Splitting ◽

Transport Number ◽

Hydriodic Acid ◽

Thermochemical Cycle ◽

Slow Increase ◽

Electro Osmosis ◽

A Current ◽

Splitting Process

The efficiency of HI concentration/separation from a HIx solution, (mixture of HI/H2O/I2) represents a crucial factor in the sulfur-iodine thermochemical water splitting process for hydrogen production. In this paper, an experimental study on HI cathodic concentration in HIx solution using stacked electro-electrodialysis (EED) cells was carried out under the conditions of 1 atm and at three different temperature (25, 55 and 85 °C) and using a current density of 0.10 A/cm2. Results showed that an increase in HI concentration can be obtained under certain conditions. The apparent transport number (t+) in all the experiments was very close to 1, and the electro-osmosis coefficient (β) changed in a range of 1.08–1.16. The tests showed a detectable, though slow, increase in both the anodic iodine and cathodic hydriodic acid concentrations.

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