Photocatalytic water-splitting in alkaline solution using redox mediator. 1:Parameter study

Lee, Koo; Nam, Woo Seok; Han, Gui Young

doi:10.1016/j.ijhydene.2004.01.003

Cited by 42 publications

(13 citation statements)

References 17 publications

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“…Other groups investigate the use of sacrificial reducing agents or electron donors [42][43][44][45][46], which can also be present in water as unwanted species like CN - [4-6, 42, 47-52].…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Hydrogen Production from Aqueous Solution Containing Cyanide Using Bi2MNbO7 (M = Al, Fe, Ga, In) Films on Stainless Steel as Photoanodes

et al. 2011

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Photoelectrochemical water splitting (UV-Vis, 2.5 V) from alkaline solution containing cyanide was evaluated in a conventional two-compartment electrochemical cell by using Bi 2 MNbO 7 (M = Al, Fe, Ga, In) films on AISI/SAE 304 stainless steel as photoanode and a silver plate as cathode. The films were prepared by sol-gel dip-coating followed by a thermal treatment at 500°C. They were characterized by scanning electron microscopy, X-ray diffraction and energy dispersive X-ray fluorescence. During the photoelectrochemical process, both circulating current and hydrogen production were measured. Changes in cyanide concentration were determined by potentiometric titration. The activity of Bi 2 MNbO 7 films was higher or equivalent than that of TiO 2 film and dependent on the electrolyte composition and concentration. The obtained results make further work on the subject very encouraging.

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“…Other groups investigate the use of sacrificial reducing agents or electron donors [42][43][44][45][46], which can also be present in water as unwanted species like CN - [4-6, 42, 47-52].…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Hydrogen Production from Aqueous Solution Containing Cyanide Using Bi2MNbO7 (M = Al, Fe, Ga, In) Films on Stainless Steel as Photoanodes

et al. 2011

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“…In our previous work, the efficient evolution of hydrogen using a Pt-TiO 2 photocatalyst with an iodide/iodate (I − /IO 3 − ) redox mediator system was examined [9]. In this study, we selectively examined the photocatalytic activity of iridium-doped TiO 2 photocatalyst for oxygen evolution, using an iodide/iodate redox mediator system instead of sacrificial reagents in the tube type slurry reactor and also examined the effect of various parameters on the evolution of oxygen in a small module reactor in which the photocatalyst was precipitated on a quartz plate.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic production of oxygen in a dual bed system using a reversible redox mediator on Ir-TiO2 catalyst

Nam

Kim

Han

2008

Korean J. Chem. Eng.

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Photocatalytic O 2 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-TiO 2 and the iodate ion, KIO 3 , was used as a redox mediator. In order to find the optimum conditions for oxygen evolution, the effect of alkaline concentration, KIO 3 concentration and the amount of Ir loading on the photocatalytic reactivity was examined in an irradiation area of 0.055 m 2 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.

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“…A TiO 2 /SnO 2 thin film [14] showed more photocatalytic efficiency of gas-phase photodegradation than TiO 2 . Pt/TiO 2 was investigated in the water-splitting reaction [15]. Pt acted as the photocatalytic promoter of the reaction, and the hydrogen evolution rate was optimum at a Pt-loading of 0.75 wt.% [15].…”

Section: Introductionmentioning

confidence: 99%

“…Pt/TiO 2 was investigated in the water-splitting reaction [15]. Pt acted as the photocatalytic promoter of the reaction, and the hydrogen evolution rate was optimum at a Pt-loading of 0.75 wt.% [15]. Pt was used as the active metal deposited on the TiO 2 catalyst in the photo-oxidation of leatherdye acid green 16 [16].…”

Section: Introductionmentioning

confidence: 99%

Photoreduction measurement of ozone using Pt/TiO2–SnO2 material at room temperature

Chen

et al. 2007

Sensors and Actuators B: Chemical

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Photocatalytic water-splitting in alkaline solution using redox mediator. 1:Parameter study

Cited by 42 publications

References 17 publications

Photoelectrochemical Hydrogen Production from Aqueous Solution Containing Cyanide Using Bi2MNbO7 (M = Al, Fe, Ga, In) Films on Stainless Steel as Photoanodes

Photoelectrochemical Hydrogen Production from Aqueous Solution Containing Cyanide Using Bi2MNbO7 (M = Al, Fe, Ga, In) Films on Stainless Steel as Photoanodes

Photocatalytic production of oxygen in a dual bed system using a reversible redox mediator on Ir-TiO2 catalyst

Photoreduction measurement of ozone using Pt/TiO2–SnO2 material at room temperature

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