Preparation and characterization of titanium dioxide modified with carbon with enhanced photocatalytic activity

Bondarenko, Marina; Khalyavka, Т. A.; Camyshan, S. V.; Petrik, I.

doi:10.15407/hftp07.04.432

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…Край поглинання TiO 2 знаходиться близько 380 нм, а композитних зразків -близько 420 нм. Додавання вуглецю також призводить до звуження ширини забороненої зони композитів (від 3,39 еВ для чистого ТіО 2ет до 3,36 еВ (1С 2 /TiO 2ет ) та від 3,37 еВ (ТіО 2мех ) до 3,35 еВ (2С/ТіО 2мех ), а також появи додаткових енергетичних рівнів в забороненій зоні TiO 2 , що приводить до сенсибілізації C/TiO 2 -композитів до видимої області спектра[13].У коливних спектрах композитних зразків, одержаних першимTiO 2ет , 2 -C1/TiO 2ет , 3 -С 2 /TiO 2eт , 4 -C 1 /TiO 2бут , 5 -С 2 /TiO 2бут , 6 -TiO 2мех , 7 -2С/TiO 2мех .…”

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Mesoporous Nanocomposites Based on Titanium Dioxide and Carbon as Perspective Photocatalysts for Water Purification

2017

Nanosist. Nanomater. Nanotehnol.

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Mesoporous Nanocomposites Based on Titanium Dioxide and Carbon as Perspective Photocatalysts for Water Purification

2017

Nanosist. Nanomater. Nanotehnol.

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Effect of the C and S additives on structural, optical, and photocatalytic properties of TiO2

Khalyavka¹,

Bondarenko²,

Shcherban

et al. 2018

Appl Nanosci

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Nanoscale composite materials based on titanium dioxide, sulphur, and carbons were obtained. The samples were characterized using X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, Brunauer-Emmett-Teller and Barret-Joiner-Halenda methods, electron paramagnetic resonance spectroscopy, and ultraviolet-visible and infrared spectroscopy. X-ray powder diffraction revealed the phase of anatase in all composites and appearance of rutile phase for samples with high sulphur content. It was established that composites consist of nanoparticles ca. 6-10 nm. Analysis of nitrogen adsorption-desorption isotherms for the synthesized samples showed the presence of a hysteresis loop which is the evidence for mesoporous structure of the powders. Absorption spectra of nanocomposites showed a bathochromic shift compared with the absorption band of pure TiO 2 . It was found that modification of titanium dioxide with sulphur and carbons leads to bandgap narrowing of composites. Nanocomposite samples showed higher photocatalytic activity in the destruction of safranin T under ultraviolet and visible irradiation compared to pure titanium dioxide. It can be connected with the participation of additives in the inhibition of electron-hole recombination, prolongation of charges lifetime, increasing of efficiency of interfacial charge separation, and formation of doping electronic states.

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Nickel substituted oxygen deficient nanoporous lithium ferrite based green energy device hydroelectric cell

Saini

Shah

Kotnala

et al. 2020

Journal of Alloys and Compounds

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Preparation and characterization of titanium dioxide modified with carbon with enhanced photocatalytic activity

Cited by 3 publications

References 15 publications

Mesoporous Nanocomposites Based on Titanium Dioxide and Carbon as Perspective Photocatalysts for Water Purification

Mesoporous Nanocomposites Based on Titanium Dioxide and Carbon as Perspective Photocatalysts for Water Purification

Effect of the C and S additives on structural, optical, and photocatalytic properties of TiO2

Nickel substituted oxygen deficient nanoporous lithium ferrite based green energy device hydroelectric cell

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