Charge transfer in TiO<sub>2</sub>-based photocatalysis: fundamental mechanisms to material strategies

Ali, Sharafat; Ismail, Pir Muhammad; Khan, Muhammad; Dang, Alei; Ali, Sajjad; Zada, Amir; Raziq, Fazal; Khan, Imran; Khan, Muhammad Shakeel; Ateeq, Muhammad; Khan, Waliullah; Bakhtiar, Syedul Hasnain; Ali, Haider; Wu, Xiaoqiang; Shah, Muhammad Ishaq Ali; Vinu, Ajayan; Yi, Jiabao; Xia, Pengfei; Qiao, Liang

doi:10.1039/d3nr04534j

Cited by 8 publications

(1 citation statement)

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“…Heterojunctions comprising -at least two- diligently selected photocatalysts can offer key-advantages e.g. such as minimal recombination of photogenerated electron–hole pairs, optimal energy-band positioning, and ultimately high photocatalytic performance . In this context, TiO 2 is among the most investigated semiconductors since it is economical, nontoxic, and stable .…”

Section: Introductionmentioning

confidence: 99%

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Deligiannakis,

Bletsa,

Mouzourakis

et al. 2024

ACS Appl. Nano Mater.

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Core−shell {nanocarbon-coated/TiO 2 } hybrids (C@ TiO 2 ) were developed through a double-nozzle flame spray pyrolysis (DN-FSP) process. By optimizing the DN-FSP parameters, we have achieved control over the subnanometric thickness of the carbon shell as well as the anatase/rutile ratio within the TiO 2 . A library of C@ TiO 2 hybrids, with varying carbon contents and sp 2 /sp 3 ratios, has been produced. These optimized C@TiO 2 hybrids are capable of performing efficient photocatalytic hydrogen production from water, exceeding 400 μmol g −1 h −1 , without the need for any noble-metal cocatalyst. HR-TEM has demonstrated that the DN-FSP process facilitates the formation of a nanocarbon shell and carbon nanodots in close contact with the TiO 2 surface. XRD and Raman spectra indicate that this close carbon/TiO 2 interface promotes the formation of a TiO 2 rutile/anatase interphase. EPR spectroscopy shows that the carbon/TiO 2 nanohybrids stabilize reduced Ti 3+ sites at the interface. Moreover, an in situ EPR study of the photoinduced holes/ electrons demonstrates that the nanocarbon moieties act as a very efficient acceptor of the photogenerated electrons. In this way, the highly efficient photocatalytic performance of C@TiO 2 nanohybrids is attributed to the formation of a Z-scheme assembly of {rutile/anatase/carbon} nanophases. From a technological perspective, this work highlights the potential of the DN-FSP process for the scalable synthesis of functional photocatalytic (carbon/metal oxide) nanomaterials.

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Section: Introductionmentioning

confidence: 99%

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Deligiannakis,

Bletsa,

Mouzourakis

et al. 2024

ACS Appl. Nano Mater.

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Simultaneous dopants and defects synergistically modulate the band structure of CN in Z-scheme heterojunctional photocatalysts for simultaneous HER and OER production

Khan,

Shayan

et al. 2024

Carbon

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A comprehensive review on the exceptional photocatalytic and electrocatalytic applications of MOFs and COFs in energy generation and organic synthesis

Lei,

Ragab,

Rwede AL-Mhyawi

et al. 2024

International Journal of Hydrogen Energy

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Charge transfer in TiO₂-based photocatalysis: fundamental mechanisms to material strategies

Abstract: The review highlights charge transfer, improved photocatalytic performance, and possible photocatalysis schemes in TiO2-based composites. It also addresses perspectives and challenges in charge transfer mechanisms for TiO2-based photocatalysis.

Cited by 8 publications

References 289 publications

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Simultaneous dopants and defects synergistically modulate the band structure of CN in Z-scheme heterojunctional photocatalysts for simultaneous HER and OER production

A comprehensive review on the exceptional photocatalytic and electrocatalytic applications of MOFs and COFs in energy generation and organic synthesis

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Charge transfer in TiO2-based photocatalysis: fundamental mechanisms to material strategies

Abstract: The review highlights charge transfer, improved photocatalytic performance, and possible photocatalysis schemes in TiO2-based composites. It also addresses perspectives and challenges in charge transfer mechanisms for TiO2-based photocatalysis.

Cited by 8 publications

References 289 publications

Carbon-Coated TiO2 Nanoparticles for Noble-Metal-Free Photocatalytic H2 Production from H2O

Carbon-Coated TiO2 Nanoparticles for Noble-Metal-Free Photocatalytic H2 Production from H2O

Simultaneous dopants and defects synergistically modulate the band structure of CN in Z-scheme heterojunctional photocatalysts for simultaneous HER and OER production

A comprehensive review on the exceptional photocatalytic and electrocatalytic applications of MOFs and COFs in energy generation and organic synthesis

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Product

Resources

About

Charge transfer in TiO₂-based photocatalysis: fundamental mechanisms to material strategies

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O