Journal ArticleDOI
Photocatalytic production of oxygen in a dual bed system using a reversible redox mediator on Ir-TiO2 catalyst
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TLDR
In this paper, a dual-bed system configuration was used for oxygen evolution and the other for hydrogen evolution in an irradiation area of 0.055 m2 with a 400 W U.V. lamp.Abstract:
Photocatalytic O2 evolution by water splitting in an alkaline solution with a redox mediator was investigated in a dual bed system configuration: one bed was used for oxygen evolution and the other for hydrogen evolution. The employed photocatalyst was Ir-TiO2 and the iodate ion, KIO3, was used as a redox mediator. In order to find the optimum conditions for oxygen evolution, the effect of alkaline concentration, KIO3 concentration and the amount of Ir loading on the photocatalytic reactivity was examined in an irradiation area of 0.055 m2 reactor with a 400 W U.V. lamp. The experimentally obtained results showed that oxygen evolution depends on the concentration of the alkaline solution, the potassium iodate concentration and the amount of Ir loading.read more
Citations
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Journal ArticleDOI
An overview of photocells and photoreactors for photoelectrochemical water splitting
TL;DR: In this article, an overview of the PE configurations and the possible photocell and photoreactor design for hydrogen production by direct photoelectrochemical (PEC) water splitting is presented.
Journal ArticleDOI
Photocatalytic Oxygen Evolution from Water Splitting
TL;DR: Diverse strategies for O2 evolution activity improvement via enhancing photoabsorption and charge separation are presented, including the cocatalysts loading, heterojunction construction, doping and vacancy formation, and other strategies.
Journal ArticleDOI
Surface modification by loading alkaline hydroxides to enhance the photoactivity of WO3
M. Khajeh Aminian,M. Hakimi +1 more
TL;DR: In this paper, surface modification on WO3 was carried out by loading KOH, NaOH and CsOH to study the influence of surface interactions on photocatalytic activity of this material.
Dissertation
Development of a new hybrid photochemical/electrocatalytic water splitting reactor for hydrogen production: design, analysis and experiments
TL;DR: In this article, the authors propose a method to solve the problem of "uniformity" and "uncertainty" in the context of education.iii.iiiiii.
References
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Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
Journal ArticleDOI
Photo-electrochemical hydrogen generation from water using solar energy. Materials-related aspects
TL;DR: In this paper, the authors focused on the materials-related issues in the development of high-efficiency photo-electrochemical cells (PECs), in terms of semiconducting and electrochemical properties and their impact on the performance of PECs.
Journal ArticleDOI
Photoassisted hydrogen production from a water-ethanol solution: a comparison of activities of AuTiO2 and PtTiO2
TL;DR: A comparison of the photocatalytic activity for H 2 generation between Au and Pt was made in this paper, where the results showed that the overall activity of Au samples was generally about 30% lower than that of Pt samples.
Journal ArticleDOI
Photocatalytic decomposition of water over NiOK4Nb6O17 catalyst
TL;DR: In this paper, a photocatalytic decomposition of H2O to form H2 and O2 over NiOK4Nb6O17 powder (1-10 μm, band gap = 3.3 eV), which is an ion-exchangeable layered compound, proceeds steadily more than 50 h under the bandgap irradiation.
Journal ArticleDOI
A new photocatalytic water splitting system under visible light irradiation mimicking a Z-scheme mechanism in photosynthesis
TL;DR: In this paper, the authors studied the water splitting into H2 and O2 using two different semiconductor photocatalysts and a redox mediator, mimicking the Z-scheme mechanism of the photosynthesis.