Effect of growth techniques on the structural, optical and electrical properties of indium doped TiO2 thin films

mashary, Faisal Al; Castro, S. de; Silva, Arlon Fernando da; Felix, Jorlandio F.; Piton, Marcelo Rizzo; Galeti, H. V. A.; Rodrigues, Ariano De Giovanni; Gobato, Y. Galvão; Saqri, N. Al; Henini, M.; Huwayz, Maryam M. Al; Albadri, Abdulrahman M.; Alyamani, Ahmed Y.; Albrithen, Hamad; Alhusaini, Sami A.; Aljaber, Khalid M.; Alanazi, Ali Z.; Alghamdi, Fahad S.

doi:10.1016/j.jallcom.2018.06.360

Cited by 17 publications

(13 citation statements)

References 37 publications

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“…This is ascribed to the low concentration of In and the peaks of In2O3 (e.g. 133 cm -1 -stretching vibration of In-O bond of InO6 unit) are coincided well with the TiO2 anatase peaks (Eg at 135.11 cm -1 ) 75,76 . Fig.…”

Section: Raman Spectroscopysupporting

confidence: 54%

Indium-Doped TiO₂ Photocatalysts with High-Temperature Anatase Stability

et al. 2019

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The thermal stability of anatase titanium dioxide (TiO2) is a prerequisite to fabricate photocatalyst coated indoor building materials for use in antimicrobial and self-cleaning applications under normal room light illumination. Metal doping of TiO2 is an appropriate way to control the anatase to rutile phase transition (ART) at high processing temperature. In this present work, ART of indium (In) doped TiO2 (In-TiO2) was investigated in detail in the range of 500 °C -900 °C. In-TiO2 (In mol % = 0 to 16) was synthesized via a modified solgel approach. These nanoparticles were further characterized by means of powder X-ray diffraction (XRD), Raman, photoluminescence (PL), transient photocurrent response, and Xray photoelectron spectroscopy (XPS) techniques. XRD results showed that the anatase phase was maintained up to 64 % by 16-mol % of In doping at 800 °C of calcination temperature.XPS results revealed that the binding energies of Ti 4+ (Ti 2p1/2 and Ti 2p3/2) were red-shifted by In doping. The influence of In doping on the electronic structure and oxygen vacancy formation of anatase TiO2 was studied using density functional theory corrected for on-site Coulomb interactions (DFT+U). First principles results showed that the charge compensating oxygen vacancies form spontaneously at sites adjacent to the In dopant. DFT+U calculations revealed the formation of In -5s states in the band gap of the anatase host. The formation of In2O3 at the anatase surface was also examined using a slab model of the anatase (101)

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Section: Raman Spectroscopysupporting

confidence: 54%

Indium-Doped TiO₂ Photocatalysts with High-Temperature Anatase Stability

et al. 2019

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“…Third, the peak intensity decreased dramatically after Cu doping. Previous studies [61][62][63][64] have proven that Cu doping can cause peak shifting, reduce the peak intensity, and decrease the peak width exhibited in Raman spectra. The difference in the ionic size of Cu 2+ and Ti 4+ causes a mismatch in the lattice structure.…”

Section: Microstructurementioning

confidence: 99%

Enhanced Photocatalytic and Antibacterial Activities of K2Ti6O13 Nanowires Induced by Copper Doping

Zhang

Wang

et al. 2020

Crystals

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Cu-doped K2Ti6O13 (Cu–KTO) nanowires were prepared using a combination of sol–gel and hydrothermal methods to improve the photocatalytic and antibacterial performance of K2Ti6O13 (KTO) nanowires. The Cu–KTO nanowires maintained the monoclinic structure of KTO. The Cu2+ ions could enter into the lattice of KTO by substituting for certain Ti4+ ions and cause the formation of defects and oxygen vacancies. The UV–Visible absorption spectra showed that after Cu doping, the absorption edge of KTO moved to the visible region, indicating that the band gap decreased and the ability to absorb visible light was acquired. The photocatalytic properties of the Cu–KTO nanowires with different doping amounts were assessed by simulating the photodegradation of rhodamine B (RhB) under simulated sunlight irradiation. The 1.0 mol% Cu–KTO nanowires showed the best photocatalytic performance, and 91% of RhB was decomposed by these nanowires (the catalyst dose was only 0.3 g/L) within 5 h. The performance of the Cu–KTO nanowires was much better than that of the KTO nanowires. The Cu–KTO nanowires also showed high antibacterial activity for Escherichia coli (ATCC 25922) of up to 99.9%, which was higher than that of the pure KTO samples. Results proved that Cu doping is an effective means to develop multifunctional KTO nanomaterials. It can be used to degrade organic pollutants and remove harmful bacteria simultaneously in water environments.

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“…From a synthesis point of view, Al mashary et al [ 128 ] demonstrated the possibility of fabricating In‐doped TiO 2 films by sputtering or pulsed laser deposition. The sputtered films contained more optically active defects than the pulsed laser deposited films.…”

Section: Doping Of Indium Atoms Into Other Oxide Photocatalystsmentioning

confidence: 99%

Indium Oxides and Related Indium‐based Photocatalysts for Water Treatment: Materials Studied, Photocatalytic Performance, and Special Highlights

Friedmann

Caruso

2021

Solar RRL

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In2O3 is an emerging material in the photocatalysis research area, with a surge in the number of studies examining indium‐based materials as photocatalysts in recent years. The materials of interest, herein, span the simple indium oxide in different polymorphs and morphologies, ternary, and even quaternary indium oxides, heterostructured systems, all in pure or doped forms. These indium‐based materials offer advantages as photocatalysts compared with the conventional titanium dioxide‐based photocatalysts. Highlights in the literature include reports of the ability of indium oxide to degrade difficult to decompose aqueous organic contaminants while also offering opportunities for visible light activation. These are exciting achievements in this field of research. The unique properties that these materials offer are uncovered, while giving insights as to how indium oxides and related indium‐based materials can be used, in what capacity and the compositional requirements when matched with other semiconductors to achieve high‐performing photocatalysts.

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Effect of growth techniques on the structural, optical and electrical properties of indium doped TiO2 thin films

Cited by 17 publications

References 37 publications

Indium-Doped TiO₂ Photocatalysts with High-Temperature Anatase Stability

Indium-Doped TiO₂ Photocatalysts with High-Temperature Anatase Stability

Enhanced Photocatalytic and Antibacterial Activities of K2Ti6O13 Nanowires Induced by Copper Doping

Indium Oxides and Related Indium‐based Photocatalysts for Water Treatment: Materials Studied, Photocatalytic Performance, and Special Highlights

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Effect of growth techniques on the structural, optical and electrical properties of indium doped TiO2 thin films

Cited by 17 publications

References 37 publications

Indium-Doped TiO2 Photocatalysts with High-Temperature Anatase Stability

Indium-Doped TiO2 Photocatalysts with High-Temperature Anatase Stability

Enhanced Photocatalytic and Antibacterial Activities of K2Ti6O13 Nanowires Induced by Copper Doping

Indium Oxides and Related Indium‐based Photocatalysts for Water Treatment: Materials Studied, Photocatalytic Performance, and Special Highlights

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Indium-Doped TiO₂ Photocatalysts with High-Temperature Anatase Stability

Indium-Doped TiO₂ Photocatalysts with High-Temperature Anatase Stability