Thioacetamide and thiourea impact on visible light activity of TiO2

Zaleska, Adriana; Górska, Paulina; Sobczak, Janusz W.; Hupka, Jan

doi:10.1016/j.apcatb.2007.05.005

Cited by 58 publications

(33 citation statements)

References 28 publications

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“…Five distinct components were individualised: the C1s(1), C1s(2), C1s(3) and C1s(4) contributions which are associated to the same forms of carbon in the carbon dioxide plasma treated PET, and a new component shifted by 1.3 eV towards low binding energies in comparison to the C1s(1) peak, situated at 283.7 eV. This new peak was located at a binding energy higher than the one corresponding to zinc carbide species (Zn-C) [56][57][58]. The fitting parameters of the C1s envelopes are presented in Table 6.…”

Section: Characterisation Of the Zinc Oxide/pet Interfacementioning

confidence: 89%

XPS characterisation of plasma treated and zinc oxide coated PET

Amor¹,

Jacquet

Fioux

et al. 2009

Applied Surface Science

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Section: Characterisation Of the Zinc Oxide/pet Interfacementioning

confidence: 89%

XPS characterisation of plasma treated and zinc oxide coated PET

Amor¹,

Jacquet

Fioux

et al. 2009

Applied Surface Science

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“…TAA is used as a replacement for hydrogen sulfide in qualitative analyses and in hospital practice, as an accelerator in rubber vulcanization, as a reductant additive in the leather, textile and paper industries, generally having a similar role to thiourea [1][2][3]. The most important recent technical applications and research studies concerning TAA use now, also draw attention to the usefulness of TAA in the preparation of photocatalytic nanocomposites, mesoporous nanomaterials and metal chalcogenide thin films [6][7][8][9]. The widespread uses of TAA are unavoidably accompanied by its toxicity and a number of ecotoxic effects in environmental pollution can result from TAA manipulation and its consequent presence in waste waters.…”

Section: Introductionmentioning

confidence: 99%

Anodic Voltammetry of Thioacetamide and its Amperometric Determination in Aqueous Media

Cinghită

2008

Sensors

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TAA is a harmful, presumptive pollutant in tap waters and waste waters. Several alternatives have been tested as new possibilities for the anodic determination of TAA in aqueous solutions, simulated waste waters and tap water. The electrochemical behaviour of thioacetamide (TAA) was investigated at a boron-doped diamond (BDD) electrode both in unbuffered 0.1 M Na 2 SO 4 and buffered solutions as supporting electrolytes. The anodic oxidation of TAA showed well-defined limiting currents or current peaks and a good linearity of the amperometric signal vs. concentration plots. The analytical parameters of sensitivity, RSD and LOD, obtained under various experimental conditions, suggest the suitability of the BDD electrode for electroanalytical purposes. Low fouling effects, good reproducibility and stability, as well as the sharpness of the amperometric signals in both unbuffered/ buffered acidic or neutral media, highly superior to those obtained using a glassy carbon (GC) electrode, recommend the unmodified BDD electrode as a promising potential amperometric sensor for environmental applications, regarding the direct anodic determination of TAA in aqueous media.

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“…The limitation in its application, resulting from low quantum yield (fast recombination of charge carriers: e − /h + ) and necessity to use UV irradiation, may be overcome since modified titania powders often possess higher level of activity and ability of working under visiblelight irradiation. A huge variety of organic [4][5][6][7] and inorganic compounds [8][9][10] have been examined as dopants or surface modifiers. Among them, noble-metals particles have attracted attention, since they may enhance the transfer of photogenerated electrons prolonging charge carriers lifetime [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Titania Photocatalysts Active under UV and Visible-Light Irradiation: Influence of Gold Amount, Size, and Shape

Kowalska

Rau

Ohtani

2012

Journal of Nanotechnology

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Plasmonic titania photocatalysts were prepared by titania modification with gold by photodeposition. It was found that for smaller amount of deposited gold (≤0.1 wt%), anatase presence and large surface area were beneficial for efficient hydrogen evolution during methanol dehydrogenation. After testing twelve amounts of deposited gold on large rutile titania, the existence of three optima for 0.5, 2 and >6 wt% of gold was found during acetic acid degradation. Under visible light irradiation, in the case of small gold NPs deposited on fine anatase titania, the dependence of photoactivity on gold amount was parabolic, and large gold amount (2 wt%), observable as an intensively coloured powder, caused photoactivity decrease. While for large gold NPs deposited on large rutile titania, the dependence represented cascade increase, due to change of size and shape of deposited gold with its amount increase. It has been thought that spherical/hemispherical shape of gold NPs, in comparison with rod-like ones, is beneficial for higher level of photoactivity under visible light irradiation. For all tested systems and regardless of deposited amount of gold, each rutile Au/TiO 2 photocatalyst of large gold and titania NPs exhibited much higher photoactivity than anatase Au/TiO 2 of small gold and titania NPs.

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Thioacetamide and thiourea impact on visible light activity of TiO2

Cited by 58 publications

References 28 publications

XPS characterisation of plasma treated and zinc oxide coated PET

XPS characterisation of plasma treated and zinc oxide coated PET

Anodic Voltammetry of Thioacetamide and its Amperometric Determination in Aqueous Media

Plasmonic Titania Photocatalysts Active under UV and Visible-Light Irradiation: Influence of Gold Amount, Size, and Shape

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