Enhanced performance of TiO2 doped with aluminum for the photocatalytic degradation of a mixture of plasticizers

Villarreal-Morales, Romeo; Hinojosa‐Reyes, Laura; Zanella, Rodolfo; Durán–Álvarez, Juan C.; Caballero-Quintero, Adolfo; Guzmán-Mar, Jorge Luis

doi:10.1016/j.jece.2021.107100

Cited by 13 publications

(1 citation statement)

References 35 publications

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“…Additionally, the doping of Group IIIA trivalent metal ions in TiO 2 introduces a shallow acceptor level above the valence band in the energy band structure, thus resulting in a significant increase in the carrier concentration of photocatalysts and enhanced light quantum efficiency. Furthermore, the incorporation of Group IIIA trivalent metals as dopants facilitates the generation of oxygen vacancies in the metal oxide structure, thereby improving the degradation performance of photocatalysts. − For instance, Al 3+ -doped ZnO demonstrated nearly 100% mineralized efficiency of toxoid A . Al-doped SrTiO 3 loaded with a rhodium–chromium mixed oxide promoted efficient photocatalytic overall water splitting with an apparent quantum yield of 56% under 365 nm ultraviolet (UV) light .…”

Section: Introductionmentioning

confidence: 99%

Trivalent Metal Ions (Al, Ga, In)-Doped TiO₂ for Enhanced Photocatalytic Desulfurization of H₂S: Band Structure Regulation, Performance, and Mechanism

Huang,

He,

Yuan

et al. 2024

Ind. Eng. Chem. Res.

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Rationally regulating the photogenerated carrier transfer behavior and band structure of TiO 2 through metal doping is an effective strategy for enhancing the photocatalytic activity in the removal of malodorous gas hydrogen sulfide (H 2 S). In this study, TiO 2 modified with the doping of Group IIIA metal ions (Al 3+ , Ga 3+ , and In 3+ ) was utilized as an efficient photocatalytic desulfurizer under ultraviolet irradiation. Among these samples, the 4% In-TiO 2 exhibited the best photocatalytic H 2 S removal efficiency of 100% for a duration of 120 min, nearly 3 times higher than that of commercial P25 TiO 2 . The UV−vis DRS and PL spectra demonstrated that the incorporation of Group-IIIA metal ions into TiO 2 resulted in the formation of a shallow acceptor level above the valence band in the energy band structure, which induced a slight redshift at the edge of the visible light absorption band and reduced the electron−hole recombination rate. In situ DRIFTS and DFT calculations revealed that the adsorption and activation of H 2 S occurred simultaneously on In-TiO 2 , facilitated by its strong oxygen vacancy formation and adsorption capability. The ln 3+ doping into TiO 2 promoted photothermalcatalytic oxidation reaction on the surfaces of In-TiO 2 , thereby significantly enhancing the desulfurization efficiency of H 2 S. This study not only offers a deeper understanding of the regulated band structure of TiO 2 by doping of Group IIIA metal ions, but also provides a promising and green photocatalytic desulfurizer of In-TiO 2 for efficient removal of H 2 S.

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Section: Introductionmentioning

confidence: 99%

Trivalent Metal Ions (Al, Ga, In)-Doped TiO₂ for Enhanced Photocatalytic Desulfurization of H₂S: Band Structure Regulation, Performance, and Mechanism

Huang,

He,

Yuan

et al. 2024

Ind. Eng. Chem. Res.

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Sol–gel synthesis of Al-doped TiO2 nanoparticles as UV filters with diminished photocatalytic activity for the application in sunscreen products

Ngoc,

Ly,

et al. 2023

J Sol-Gel Sci Technol

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Constructing the active pairs of Co0-Co2+ via surface solid reaction on TiO2 with the additives of La and Al for higher alcohols synthesis

Song

Wang

et al. 2023

Applied Surface Science

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Enhanced performance of TiO2 doped with aluminum for the photocatalytic degradation of a mixture of plasticizers

Cited by 13 publications

References 35 publications

Trivalent Metal Ions (Al, Ga, In)-Doped TiO₂ for Enhanced Photocatalytic Desulfurization of H₂S: Band Structure Regulation, Performance, and Mechanism

Trivalent Metal Ions (Al, Ga, In)-Doped TiO₂ for Enhanced Photocatalytic Desulfurization of H₂S: Band Structure Regulation, Performance, and Mechanism

Sol–gel synthesis of Al-doped TiO2 nanoparticles as UV filters with diminished photocatalytic activity for the application in sunscreen products

Constructing the active pairs of Co0-Co2+ via surface solid reaction on TiO2 with the additives of La and Al for higher alcohols synthesis

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Enhanced performance of TiO2 doped with aluminum for the photocatalytic degradation of a mixture of plasticizers

Cited by 13 publications

References 35 publications

Trivalent Metal Ions (Al, Ga, In)-Doped TiO2 for Enhanced Photocatalytic Desulfurization of H2S: Band Structure Regulation, Performance, and Mechanism

Trivalent Metal Ions (Al, Ga, In)-Doped TiO2 for Enhanced Photocatalytic Desulfurization of H2S: Band Structure Regulation, Performance, and Mechanism

Sol–gel synthesis of Al-doped TiO2 nanoparticles as UV filters with diminished photocatalytic activity for the application in sunscreen products

Constructing the active pairs of Co0-Co2+ via surface solid reaction on TiO2 with the additives of La and Al for higher alcohols synthesis

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Trivalent Metal Ions (Al, Ga, In)-Doped TiO₂ for Enhanced Photocatalytic Desulfurization of H₂S: Band Structure Regulation, Performance, and Mechanism

Trivalent Metal Ions (Al, Ga, In)-Doped TiO₂ for Enhanced Photocatalytic Desulfurization of H₂S: Band Structure Regulation, Performance, and Mechanism