One–step reductive synthesis of Ti3+ self–doped elongated anatase TiO2 nanowires combined with reduced graphene oxide for adsorbing and degrading waste engine oil

Cheng, Dandan; Li, Yaobang; Yang, Lixia; Luo, Shenglian; Yang, Liming; Li, Tingting; Gao, Jiong; Dionysiou, Dionysios D.

doi:10.1016/j.jhazmat.2019.120752

Cited by 30 publications

(12 citation statements)

References 48 publications

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“…3a). The Ti 2p XPS spectra of the Rh/Ti 3+ -TiO 2 nanocomposite was used to determine binding energies at 464.7, 463.9, 458.7, and 458.1 eV, which align, respectively, with Ti 4+ 2p 1/2 , Ti 3+ 2p 1/2 , Ti 4+ 2p 3/2 , and Ti 3+ 2p 3/2 [15], (Fig. 3b).…”

Section: Resultsmentioning

confidence: 99%

“…A number of methods have been used to overcome these challenges, such as doping with metal or non-metal elements, grouping with other semiconductors, and grouping with plasmonic metal [2,13,14]. Recently, studies on Ti 3+ self-doped TiO 2 have been carried out due to the ability of this process to overcome the above disadvantages [15][16][17]. The addition of oxygen vacancies (Ov) or Ti 3+ to the altered TiO 2 grid greatly improves the photocatalytic ability within the band of visible light [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Facile synthesis of Rh/Ti3+-TiO2 nanocomposites and its photodisinfection properties on Staphylococcus aureus under visible-NIR excitation

et al. 2020

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In this study, we synthesized a series of rhodium-modi ed and Ti 3+ self-doped TiO 2 (Rh/Ti 3+-TiO 2) nanocomposites via the one-pot method. We prepared samples of Rh/Ti 3+-TiO 2 , which were analyzed using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Electron Spin Resonance (ESR), and Uv-vis-NIR analysis. We found that the ability of TiO 2 to absorb near-infrared and visible light was signi cantly improved by the Rh/Ti 3+-TiO 2 nanocomposites, due to Ti 3+ doping as well as modi cation of Rh. The disinfection properties of these materials were tested using Staphylococcus aureus under visible light and NIR light excitations. The synthesized photocatalyst was found to exhibit signi cantly enhanced photocatalytic inactivation of S. aureus under both visible and NIR light irradiation, as compared to pure TiO 2. This was particularly true with respect to the 5% Rh/Ti 3+-TiO 2 sample. Our results suggest that the Rh/Ti 3+-TiO 2 composites could extend the range of optical response range of pure nano TiO 2 materials to the Vis-NIR region.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile synthesis of Rh/Ti3+-TiO2 nanocomposites and its photodisinfection properties on Staphylococcus aureus under visible-NIR excitation

et al. 2020

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“…Besides, TiO 2 NWs offer a high dielectric constant which enhances the electrostatic precipitation of the water droplets on the filter surface. The superhydrophilicity of TiO 2 NWs favours the adhesion and spread of the droplets, which could be attributed to the presence of several Ti 3+ sites on the surface [73] , [74] , [75] . Moisture or humid conditions are essential for the maximum ROSs generation under light illumination.…”

Section: Recent Advancesmentioning

confidence: 99%

Antimicrobial TiO2 nanocomposite coatings for surfaces, dental and orthopaedic implants

Kumaravel

Nair

Mathew

et al. 2021

Chemical Engineering Journal

155

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“…A better XPS profile fitting was later obtained by including a peak at 460.2 eV, being assigned as the Ti 3+ defects on the composite surface [43,44]. The O 1s spectrum in Figure 2e can be devised into three peaks in TiO 2 with the binding energy of 530.5, 531.9, and 533.2 eV which can be assigned to (Ti-O), oxygen vacancy (V o ), and water molecules adsorbed on the surface of TiO 2 , respectively [45]. Figure 2f shows the result of the solid ESR measurement which was used to confirm the presence of Ti 3+ .…”

Section: Characterizationmentioning

confidence: 99%

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

et al. 2022

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In this work, g-C3N4/TiO2 composites were fabricated through a hydrothermal method for the efficient photocatalytic degradation of imidacloprid (IMI) pesticide. The composites were fabricated at varying loading of sonochemically exfoliated g-C3N4 (denoted as CNS). Complementary characterization results indicate that the heterojunction between the CNS and TiO2 formed. Among the composites, the 0.5CNS/TiO2 material gave the highest photocatalytic activity (93% IMI removal efficiency) under UV-Vis light irradiation, which was 2.2 times over the pristine g-C3N4. The high photocatalytic activity of the g-C3N4/TiO2 composites could be ascribed to the band gap energy reduction and suppression of photo-induced charge carrier recombination on both TiO2 and CNS surfaces. In addition, it was found that the active species involved in the photodegradation process are OH and holes, and a possible mechanism was proposed. The g-C3N4/TiO2 photocatalysts exhibited stable photocatalytic performance after regeneration, which shows that g-C3N4/TiO2 is a promising material for the photodegradation of imidacloprid pesticide in wastewater.

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One–step reductive synthesis of Ti3+ self–doped elongated anatase TiO2 nanowires combined with reduced graphene oxide for adsorbing and degrading waste engine oil

Cited by 30 publications

References 48 publications

Facile synthesis of Rh/Ti3+-TiO2 nanocomposites and its photodisinfection properties on Staphylococcus aureus under visible-NIR excitation

Facile synthesis of Rh/Ti3+-TiO2 nanocomposites and its photodisinfection properties on Staphylococcus aureus under visible-NIR excitation

Antimicrobial TiO2 nanocomposite coatings for surfaces, dental and orthopaedic implants

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

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