Bi-component semiconductor oxide photoanodes for the photoelectrocatalytic oxidation of organic solutes and vapours: A short review with emphasis to TiO2–WO3 photoanodes

Georgieva, J.; Valova, E.; Armyanov, S.; Philippidis, N.; Poulios, Ioannis; Sotiropoulos, S.

doi:10.1016/j.jhazmat.2011.11.069

Cited by 145 publications

(67 citation statements)

References 212 publications

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“…Even a sample of pure TiO 2 (e) showed more effective photocatalytic properties than d sample. This can be explained with the instability of WO 3 -unlike the inert TiO 2 , tungsten trioxide undergoes a transformation to WO 4 2-in a solution that has pH over 4 [8]. …”

Section: Resultsmentioning

confidence: 99%

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Structure and Photocatalytic Properties of TiO₂-WO₃Composites Prepared by Electrophoretic Deposition

Liepina

Bajārs

Rublans

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this work TiO 2 -WO 3 composite films containing different oxide concentrations were prepared by electrophoretic deposition on steel substrates. Composite coating structures were analyzed by X -ray diffraction, Raman spectra and scanning electron microscopy. The results showed an even distribution of WO 3 particles in the entire composite layer. Light absorption measurements were used for photocatalytic properties evaluation. It was found that the removal ratio of methylene blue depends on the (TiO 2 ):(WO 3 ) concentration ratio. The most effective photodegradation was determined for the sample that was electrophoretically deposited from the suspension with the molar content ratio n(TiO 2 ):n(WO 3 ) 2:1.

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Section: Resultsmentioning

confidence: 99%

“…However, practical application of such films is limited by recombination of photo-induced hole-electron pairs. Coupling TiO 2 with other inorganic oxides such as SiO 2 , SnO 2 , WO 3 , In 2 O 3 , (Sr,La)TiO 3+δ and ZnFe 2 O 4 can increase the energy range of photo-excitation and this will change the photocatalytic efficiency [4].…”

Section: Introductionmentioning

confidence: 99%

Structure and Photocatalytic Properties of TiO₂-WO₃Composites Prepared by Electrophoretic Deposition

Liepina

Bajārs

Rublans

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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“…To overcome the above mentioned drawbacks, the studies on either developing visible light responsive photoanodes [11][12][13][14] or replacing Pt by p-type semiconductor as the photocathode [15,16] become equally important, leading to the development of dual photoelectrodes for PFC system. However, so far, these PFCs have been identified with its shortcomings that the photoactivity and photostability of the electrodes are poor, which limits their application.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient and Visible Light Responsive Heterojunction Composites as Dual Photoelectrodes for Photocatalytic Fuel Cell

et al. 2018

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Abstract:In the present work, a novel photocatalytic fuel cell (PFC) system involving a dual heterojunction photoelectrodes, viz. polyaniline/TiO 2 nanotubes (PANI/TiO 2 NTs) photoanode and CuO/Co 3 O 4 nanorods (CuO/Co 3 O 4 NRs) photocathode, has been designed. Compared to TiO 2 NTs electrode of PFC, the present heterojunction design not only enhances the visible light absorption but also offers the higher efficiency in degrading Rhodamine B-a model organic pollutant. The study includes an evaluation of the dual performance of the photoelectrodes as well. Under visible-light irradiation of 3 mW cm −2 , the cell composed of the photoanode PANI/TiO 2 NTs and CuO/Co 3 O 4 NRs photocathode forms an interior bias of +0.24 V within the PFC system. This interior bias facilitated the transfer of electrons from the photoanode to photocathode across the external circuit and combined with the holes generated therein along with a simultaneous power production. In this manner, the separation of electron/hole pair was achieved in the photoelectrodes by releasing the holes and electrons of PANI/TiO 2 NTs photoanode and CuO/Co 3 O 4 NRs photocathode, respectively. Using this PFC system, the degradation of Rhodamine B in aqueous media was achieved to an extent of 68.5% within a reaction duration of a four-hour period besides a simultaneous power generation of 85 µA cm −2 .

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“…Recent research, therefore, focused on multinary-metal-oxide semiconductors, many of which are based on TiO 2 ,W O 3 ,o r Fe 2 O 3 ,e ither mixed with each other or doped with single elements such as Ta. [7][8][9] An effective methodt oi dentify suitable materials for SWS is seen in the thin-film combinatorial materials cience approach. [10][11][12][13] Instead of analyzing only as ingle point in ah uge parameter space, the combinatorial approach provides al arge number of different but very well defined and well comparable samples in am aterial library (ML).…”

Section: Introductionmentioning

confidence: 99%

High‐Throughput Screening of Thin‐Film Semiconductor Material Libraries II: Characterization of FeWO Libraries

et al. 2015

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Metal oxides are promising materials for solar water splitting. To identify suitable materials within the ternary system FeWO, thin-film material libraries with combined thickness and compositional gradients were synthesized by combinatorial reactive magnetron sputtering. These libraries (>1000 different samples) were investigated by means of structural and functional high-throughput characterization techniques to establish correlations between composition, crystallinity, morphology, thickness, and photocurrent density in the compositional range between (Fe6 W94 )Ox and (Fe61 W39 )Ox . In addition to the well-known phase WO3 , the binary phase W5 O14 and the ternary phase Fe2 O6 W show enhanced photoelectrochemical activity. The highest photocurrent density of 65 μA cm(-2) was achieved for the composition (Fe15 W85 )Ox , which contains the W5 O14 phase and has a thickness of 1060 nm.

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Bi-component semiconductor oxide photoanodes for the photoelectrocatalytic oxidation of organic solutes and vapours: A short review with emphasis to TiO2–WO3 photoanodes

Cited by 145 publications

References 212 publications

Structure and Photocatalytic Properties of TiO₂-WO₃Composites Prepared by Electrophoretic Deposition

Structure and Photocatalytic Properties of TiO₂-WO₃Composites Prepared by Electrophoretic Deposition

Highly Efficient and Visible Light Responsive Heterojunction Composites as Dual Photoelectrodes for Photocatalytic Fuel Cell

High‐Throughput Screening of Thin‐Film Semiconductor Material Libraries II: Characterization of FeWO Libraries

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Bi-component semiconductor oxide photoanodes for the photoelectrocatalytic oxidation of organic solutes and vapours: A short review with emphasis to TiO2–WO3 photoanodes

Cited by 145 publications

References 212 publications

Structure and Photocatalytic Properties of TiO2-WO3Composites Prepared by Electrophoretic Deposition

Structure and Photocatalytic Properties of TiO2-WO3Composites Prepared by Electrophoretic Deposition

Highly Efficient and Visible Light Responsive Heterojunction Composites as Dual Photoelectrodes for Photocatalytic Fuel Cell

High‐Throughput Screening of Thin‐Film Semiconductor Material Libraries II: Characterization of FeWO Libraries

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Structure and Photocatalytic Properties of TiO₂-WO₃Composites Prepared by Electrophoretic Deposition

Structure and Photocatalytic Properties of TiO₂-WO₃Composites Prepared by Electrophoretic Deposition