Sol–gel derived structures for optical design and photocatalytic application

Гапоненко, Н. В.; Кортов, В. С.; Smirnova, N. P.; Orekhovskaya, T. I.; Nikolaenko, I. A.; Пустоваров, В. А.; Zvonarev, S. V.; Слесарев, А. И.; Linnik, Oksana; Zhukovskii, M. A.; Борисенко, В. Е.

doi:10.1016/j.mee.2011.04.002

Cited by 12 publications

(2 citation statements)

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“…Features of the sol-gel synthesis of semiconductive films based on titania allow the creation of structures with different morphologies on various substrates [10,35]. As known, photocatalytic reactions occur on the interface of solid photocatalysts and the liquid or gas phase where the adsorption of reactant molecules or ions is one of the determining factors of an efficient photocatalytic transformation [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Synthesis Conditions of Nitrogen and Platinum Co-Doped Titania Films on the Photocatalytic Performance under Simulated Solar Light

et al. 2020

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Platinum and nitrogen co-doped titania films of different surface morphologies obtained via a sol-gel process have been tested for tetracycline hydrochloride photocatalytic decomposition under simulated solar light. Titania crystallization to anatase is shown by XRD for all films. A shift of the bandgap edge toward the visible region in absorption spectra and, consequently, a narrowing of the bandgap is observed for some films doped with nitrogen and/or exposed to UV pretreatment. The surface peculiarities of the samples are presented by an SEM and TEM investigation. The surface saturation by Pt and N with a homogeneous distribution of Pt ions on the surface as well as bulk as established by XPS and EDS data can be achieved with a certain synthesis procedure. The influence of the platinum content and of the pretreatment procedure on the state and atomic surface concentration of incorporated nitrogen and platinum is studied by XPS analysis: substitutional and interstitial nitrogen, non-metal containing fragments, Pt0, Pt2+ and Pt4+ ions. The photocatalytic activity of the films is ruled by the presence of Pt2+ ions and N rather than Pt0. The formation of the polycrystalline titania structure and Pt0 nanoparticles (NPs) is confirmed by TEM and electron diffraction images. The mechanism of primary photocatalytic processes is proposed.

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Section: Introductionmentioning

confidence: 99%

Effect of Synthesis Conditions of Nitrogen and Platinum Co-Doped Titania Films on the Photocatalytic Performance under Simulated Solar Light

et al. 2020

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“…Another way to enhance the photocatalytic activity of TiO 2 N y is the formation of charge transfer complex of TiO 2 and another material, which can absorb solar light [8][9][10][11][12]. It is well known that the combination of the two different band structure compounds may cause the charge transfer on the photocatalyst surface to depress the recombination of photo-induced electrons and holes, which is helpful for the improvement of photocatalytic activity [13,14].…”

Section: Introductionmentioning

confidence: 99%