Journal ArticleDOI
Tuning the relative concentration ratio of bulk defects to surface defects in TiO2 nanocrystals leads to high photocatalytic efficiency.
TLDR
It was found for the first time that decreasing the relative concentration ratio of bulk defects to surface defects in TiO(2) nanocrystals could significantly improve the separation efficiency of photogenerated electrons and holes, thus significantly enhancing the photocatalytic efficiency.Abstract:
TiO2 nanocrystals with tunable bulk/surface defects were synthesized and characterized with TEM, XRD, BET, positron annihilation, and photocurrent measurements. The effect of defects on photocatalytic activity was studied. It was found for the first time that decreasing the relative concentration ratio of bulk defects to surface defects in TiO2 nanocrystals could significantly improve the separation efficiency of photogenerated electrons and holes, thus significantly enhancing the photocatalytic efficiency.read more
Citations
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Defective TiO2 with oxygen vacancies: synthesis, properties and photocatalytic applications
TL;DR: This tutorial minireview gives a short review on the existing strategies for the synthesis of defective TiO2 with oxygen vacancies, and the defect related properties ofTiO2 including structural, electronic, optical, dissociative adsorption and reductive properties, which are intimately related to the photocatalytic performance of TiO 2.
Journal ArticleDOI
Engineering heterogeneous semiconductors for solar water splitting
TL;DR: In this paper, a critical review highlights some key factors influencing the efficiency of heterogeneous semiconductors for solar water splitting (i.e. improved charge separation and transfer, promoted optical absorption, optimized band gap position, lowered cost and toxicity, and enhanced stability and water splitting kinetics).
Journal ArticleDOI
CO2 photo-reduction: insights into CO2 activation and reaction on surfaces of photocatalysts
TL;DR: In this article, a review describes recent advances in the fundamental understanding of CO2 photoreduction on the surface of heterogeneous catalysts and particularly provides an overview of enhancing the adsorption/activation of CO 2 molecules.
Journal ArticleDOI
Black titanium dioxide (TiO2) nanomaterials
TL;DR: The recent progress in the investigation of black TiO2 nanomaterials has been reviewed here, and special emphasis has been given on their fabrication methods along with their various chemical/physical properties and applications.
Journal ArticleDOI
Steering charge kinetics in photocatalysis: intersection of materials syntheses, characterization techniques and theoretical simulations
TL;DR: This review highlights the recent progress on probing and steering charge kinetics toward designing highly efficient photocatalysts and elucidate the fundamentals behind the combinative use of controlled synthesis, characterization techniques and theoretical simulations in photocatalysis studies.
References
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Journal ArticleDOI
Photocatalysis on TiO2 Surfaces - Principles, Mechanisms, and Selected Results
TL;DR: In this article, the authors focus on interfacial processes and summarize some of the operating principles of heterogeneous photocatalysis systems, including the electron transfer and energy transfer processes in photocatalytic reactions.
Journal ArticleDOI
Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and Applications
Xiaobo Chen,Samuel S. Mao +1 more
Journal ArticleDOI
Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals
TL;DR: It is shown that disorder-engineered TiO2 nanocrystals exhibit substantial solar-driven photocatalytic activities, including the photo-oxidation of organic molecules in water and the production of hydrogen with the use of a sacrificial reagent.
Journal ArticleDOI
Surface Science Studies of the Photoactivation of TiO2New Photochemical Processes
Tracy L. Thompson,John T. Yates +1 more
Journal ArticleDOI
Synthesis of Titania Nanosheets with a High Percentage of Exposed (001) Facets and Related Photocatalytic Properties
TL;DR: Anatase TiO(2) nanosheets with highly reactive facets exposed have been successfully synthesized by a facile hydrothermal route, taking advantage of a specific stabilization effect of fluorine ion on (001) facets.
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