Vapor-phase hydrothermal synthesis of rutile TiO2 nanostructured film with exposed pyramid-shaped (1 1 1) surface and superiorly photoelectrocatalytic performance

Chen, Jiangyao; Zhang, Haimin; Liu, Porun; Wang, Yun; Liu, Xiaolu; Li, Guiying; An, Taicheng; Zhao, Huijun

doi:10.1016/j.jcis.2014.05.012

Cited by 24 publications

(7 citation statements)

References 38 publications

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“…DFT calculations reveal that the {111} facets of rutile TiO 2 with high surface energy can be stabilized by hydroxylation, which supports the experimental observation that the {111} facets are formed at the solid–solution interfaces . Similarly, H 2 O 2 is also important to obtaining high-quality rutile TiO 2 films with exposed pyramid-shaped {111} facets on Ti foils prepared by a vapor-phase hydrothermal method . Single-crystal rutile TiO 2 pillars with exposed high-energy facets of {011} and {111} were fabricated by thermally treating a compact amorphous film derived from an anodic TiO 2 film by removing the top nanotube arrays .…”

Section: Synthesis Of Crystal Facet Engineered Photoelectrodessupporting

confidence: 70%

“…Further investigation reveals that the electrical conductivity, interfacial resistance, and diffusivity of charge along the c -axis in the {101} photoanode are better than those of the others, resulting in a higher PEC performance. A rutile TiO 2 film with exposed {111} facets exhibited almost an identical VB position to the anatase TiO 2 nanotube film, suggesting a similar oxidation capability . However, the rutile TiO 2 film demonstrates more than 3.5 times higher photocatalytic activity for PEC water splitting than the anatase TiO 2 nanotube film, which is attributed to the lower intrinsic resistance to photoelectron transport in the {111}-faceted rutile TiO 2 film.…”

Section: Advantages Of Crystal Facet Engineered Photoelectrodesmentioning

confidence: 96%

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Crystal Facet Engineering of Photoelectrodes for Photoelectrochemical Water Splitting

2019

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Photoelectrochemical (PEC) water splitting is a promising approach for solar-driven hydrogen production with zero emissions, and it has been intensively studied over the past decades. However, the solar-to-hydrogen (STH) efficiencies of the current PEC systems are still far from the 10% target needed for practical application. The development of efficient photoelectrodes in PEC systems holds the key to achieving high STH efficiencies. In recent years, crystal facet engineering has emerged as an important strategy in designing efficient photoelectrodes for PEC water splitting, which has yet to be comprehensively reviewed and is the main focus of this article. After the Introduction, the second section of this review concisely introduces the mechanisms of crystal facet engineering. The subsequent section provides a snapshot of the unique facet-dependent properties of some semiconductor crystals including surface electronic structures, redox reaction sites, surface built-in electric fields, molecular adsorption, photoreaction activity, photocorrosion resistance, and electrical conductivity. Then, the methods for fabricating photoelectrodes with faceted semiconductor crystals are reviewed, with a focus on the preparation processes. In addition, the notable advantages of the crystal facet engineering of photoelectrodes in terms of light harvesting, charge separation and transfer, and surface reactions are critically discussed. This is followed by a systematic overview of the modification strategies of faceted photoelectrodes to further enhance the PEC performance. The last section summarizes the major challenges and some invigorating perspectives for future research on crystal facet engineered photoelectrodes, which are believed to play a vital role in promoting the development of this important research field.

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Section: Synthesis Of Crystal Facet Engineered Photoelectrodessupporting

confidence: 70%

Section: Advantages Of Crystal Facet Engineered Photoelectrodesmentioning

confidence: 96%

Crystal Facet Engineering of Photoelectrodes for Photoelectrochemical Water Splitting

2019

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“…The hydrothermal method has been also used for designing and preparing various TiO 2 -based nanomaterials, e.g., hierarchical TiO 2 -based nanowires [19], layered TiO 2 -based nanosheets(BNSs) [25] and rutile TiO 2 -based hollow nanorods [26], wherein the advantages of the hydrothermal procedure is facile, perfect dispersibility, small particle size and environmentally friendly. In addition, this preparation method can be easily extended to change the element component of the thin films on the surface of TiO 2 -based nanomaterials [25,[27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of TiO 2 -based nanosheets for photocatalytic degradation of acetylsalicylic acid: Influence of calcination temperature

Liu

Cheng

et al. 2015

Chemical Engineering Journal

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“…Heterogeneous photocatalysis has proven to be a highly effective degradation technology purifying benzene series pollutants in the air 7 8 10 11 12 . A number of laboratory studies have investigated the feasibility of this technology 10 13 14 and kinetics 15 16 to further improve the technology and enhance degradation efficiency by developing new photocatalysts for benzene abatement 17 18 19 20 21 .…”

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confidence: 99%

Theoretical investigation on the adsorption configuration and •OH-initiated photocatalytic degradation mechanism of typical atmospheric VOCs styrene onto (TiO2)n clusters

Wang

Chen

et al. 2015

Sci Rep

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In this study, the adsorption mechanism and hydroxyl radical (•OH)-initiated photocatalytic degradation mechanism of styrene onto different (TiO2)n clusters were investigated using density functional theory. Styrene, a typical model atmospheric volatile organic compound (VOC), was found to be readily adsorbed onto (TiO2)n clusters through its vinyl group with strong chemisorption. This suggests that (TiO2)n clusters (sub 1 nm) are able to effectively adsorb and trap styrene. Adsorbed styrene is then easily attacked by •OH to form a series of vinyl-OH-adducts. Conversely, phenyl-OH-adducts and H-abstraction products are very difficult to form in this system. Kinetics calculations using canonical variational transition state theory show that temperature has little effect on the rate constants during photocatalytic degradation process. The presence of TiO2 does not change the degradation mechanism of styrene, but can accelerate its photocatalyic degradation rate, and the rate will increase as TiO2 cluster size increases; as such, the TiO2 nano-clusters catalyst should have the photocatalytic ability to effectively degrade styrene. This theory-based study offers insights into the catalytic effect of TiO2 catalyst and the photocatalytic degradation mechanism of benzene series air pollutants at the molecular level.

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Vapor-phase hydrothermal synthesis of rutile TiO2 nanostructured film with exposed pyramid-shaped (1 1 1) surface and superiorly photoelectrocatalytic performance

Cited by 24 publications

References 38 publications

Crystal Facet Engineering of Photoelectrodes for Photoelectrochemical Water Splitting

Crystal Facet Engineering of Photoelectrodes for Photoelectrochemical Water Splitting

Preparation and characterization of TiO 2 -based nanosheets for photocatalytic degradation of acetylsalicylic acid: Influence of calcination temperature

Theoretical investigation on the adsorption configuration and •OH-initiated photocatalytic degradation mechanism of typical atmospheric VOCs styrene onto (TiO2)n clusters

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