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 19 publications

(1 citation statement)

References 289 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

Unveiling the Power of Titanium Dioxide for Energy Storage and Electrochemical Technologies

Baudino,

Zaccagnini,

Bianco

et al. 2024

ChemCatChem

View full text Add to dashboard Cite

Titanium dioxide nanotubes (TiO2 NTs) have been widely investigated in the past twenty years due to the variety of possible applications of this material. Indeed, their high surface area and tunable morphology can easily implement key features of TiO2, such as its biocompatibility and photo and electrocatalytic properties. This combination makes TiO2 NTs perfect candidates for multifunctional applications ranging from biomedical application to sensing and energy devices. Herein, we present TiO2 NTs grown by anodic oxidation on top of a titanium foil in an ethylene glycol based electrolyte with NH4F. The as‐grown amorphous nanotubes were then subjected to annealing in a reducing atmosphere at different temperatures while maintaining their amorphicity. The morphological, physico‐chemical and electronic properties were then thoroughly evaluated to assess their use in different fields, from energy storage devices to photocatalytical applications

show abstract

Multifactorial coupling to greatly enhance photocurrent density of BiFeO3-based ferroelectric photovoltaic architectures

Sun,

Wei,

Yang

et al. 2024

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

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 19 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

Unveiling the Power of Titanium Dioxide for Energy Storage and Electrochemical Technologies

Multifactorial coupling to greatly enhance photocurrent density of BiFeO3-based ferroelectric photovoltaic architectures

Contact Info

Product

Resources

About

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 19 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

Unveiling the Power of Titanium Dioxide for Energy Storage and Electrochemical Technologies

Multifactorial coupling to greatly enhance photocurrent density of BiFeO3-based ferroelectric photovoltaic architectures

Contact Info

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