Visible light induced photocatalysis on CdS quantum dots decorated TiO 2 nanotube arrays

Zhu, Yuxiang; Wang, Yanfei; Chen, Zhi; Qin, Laishun; Yang, Libin; Zhu, Liang; Tang, Peng; Gao, Tong; Huang, Yuexiang; Zhou, Sha; Tang, Gao

doi:10.1016/j.apcata.2015.03.035

Cited by 154 publications

(65 citation statements)

References 42 publications

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“…In at ypical procedure,T iO 2 nanotube arrays are synthesized as follows. [6,7] First, diced titaniumf oil is mechanically polished and chemically etchedi namixed acid solution to removes urface impurities. Then, it is cleaned by ultrasonication in separate baths of acetone,m ethanol, ethanol, and deionizedw ater ands ubsequently dried in an oven in air.…”

Section: Anodizationmentioning

confidence: 99%

“…[25] Furthermore, another important application could be as ac andidate for environmental treatment such as degrading organic pollutants in water. [6,7] This material has received increasing attention as ap romising material to ravel out the energy sourcei ssue and to diminish environmental contamination. [28] Hydrogenc an be produced by water splitting on TiO 2 nanotube array based photocatalysts.…”

Section: Applicationsmentioning

confidence: 99%

“…No clear decrease in the photocatalytic activity has been observeda fter severalc atalytic cycles. [6,7] TiO 2 powdersh ave been mainly used as as emiconductor photocatalyst in the past years.H owever, the fastr ecombination of photogenerated electron-hole pairs and the limited utilization of visiblel ight are still two main obstacles that have to be solved so that high efficiency can be achieved. TiO 2 cannot absorb visible light owing to its large band gap of 3.2 eV (anatase), which indicates that approximately 45 % of the solar energy is difficult to utilize.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen Generation from Water Splitting on TiO₂ Nanotube‐Array‐Based Photocatalysts

et al. 2015

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H2 production from water splitting by a photocatalytic process is one route that can be used to solve global issues related to energy depletion and environmental pollution, and it has attracted a great amount of attention in both the academic and industrial fields. TiO2 nanotube arrays are intensively investigated as TiO2 catalysts. In comparison to a TiO2 powder catalyst, the nanotube arrays have specific advantages, including a large surface area, easy retrievability, uniformly ordered structure, and size‐dependent properties, all of which make them attractive in wide applications including H2 generation. In recent years, a large amount of work has been done and great progress has been achieved in this field. In this review, we summarize synthetic strategies to prepare TiO2 nanotube arrays and their modification methods, and we highlight recent progress in the generation of H2 on TiO2 nanotube‐array‐based materials. Finally, challenges associated with industrial application of this photocatalytic technique are also emphasized.

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Section: Anodizationmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrogen Generation from Water Splitting on TiO₂ Nanotube‐Array‐Based Photocatalysts

et al. 2015

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“…Amongst photocatalysts, TiO 2 is one of the most widely investigated because of its high chemical stability, excellent catalytic activity, and environmental friendliness [4,5]. The photocatalytic mechanism of TiO 2 comprises adsorption of pollutants onto the photocatalyst surface followed by their photocatalytic degradation [6][7][8]. Hence, the activity of such photocatalysts is mainly determined by their adsorption ability and the concentration of electrons and holes on their surface.…”

Section: Introductionmentioning

confidence: 99%

Microstructure of SiO2/TiO2 hybrid electrospun nanofibers and their application in dye degradation

Liang

Zhao

2016

Res Chem Intermed

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SiO 2 /TiO 2 hybrid nanofibers were prepared by electrospinning and applied for photocatalytic degradation of methylene blue (MB). The phase structure, specific surface area, and surface morphologies of the SiO 2 /TiO 2 hybrid nanofibers were characterized through thermogravimetry (TG), X-ray diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) analysis, scanning electron microscopy (SEM), etc. XRD measurements indicated that doping of silica into TiO 2 nanofibers can delay the phase transition from anatase to rutile and decrease the grain size. SEM and BET characterization proved that silica doping can remarkably enhance the porosity of the SiO 2 /TiO 2 hybrid nanofibers. The MB adsorption capacity and photocatalytic activity of the SiO 2 /TiO 2 hybrid nanofibers were distinguished experimentally. It was found that, although increased silica doping content could enhance the MB adsorption capacity, the intrinsic photocatalytic activity gradually dropped. The SiO 2 (10 %)/TiO 2 composite nanofibers exhibited the highest MB degradation rate, being superior to SiO 2 (20 %)/TiO 2 or pure TiO 2 .

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“…For example, Zhu et al . prepared CdS quantum dots decorated TiO 2 nanotube arrays (CdS‐TNTAs) can effectively improve the ability of TiO 2 hydrogen production and organic pollutants degradation . After decades of efforts, scientists have made great progress in improving the utilization of solar light, photons yield and catalytic efficiency of semiconductor catalysts.…”

Section: Introductionmentioning

confidence: 99%

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

Zhao

Fang

Chen

et al. 2018

Applied Organom Chemis

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Graphene oxide/Mg‐doped ZnO/tungsten oxide quantum dots composites (WQGOMZ) were prepared through co‐precipitation method, and were studied by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), Fluorescence spectra (FL), and UV–vis diffuse reflection spectra. Furthermore, the photocatalytic activity of resultant WQGOMZ was evaluated under nature sunlight. Experimental results showed that WO3QDs can remarkably heighten the photocatalytic activity of GOMZ composite, in which is nearly 6.58 times higher than that of GOMZ composite. Simultaneously, WQGOMZ composites possess optical memory ability and maintain high photocatalytic stability for more than 40 days. The enhanced photocatalytic activity and optical memory ability are attributed to the effective synergistic effect between ZnO and WO3QDs.

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Visible light induced photocatalysis on CdS quantum dots decorated TiO 2 nanotube arrays

Cited by 154 publications

References 42 publications

Hydrogen Generation from Water Splitting on TiO₂ Nanotube‐Array‐Based Photocatalysts

Hydrogen Generation from Water Splitting on TiO₂ Nanotube‐Array‐Based Photocatalysts

Microstructure of SiO2/TiO2 hybrid electrospun nanofibers and their application in dye degradation

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

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Visible light induced photocatalysis on CdS quantum dots decorated TiO 2 nanotube arrays

Cited by 154 publications

References 42 publications

Hydrogen Generation from Water Splitting on TiO2 Nanotube‐Array‐Based Photocatalysts

Hydrogen Generation from Water Splitting on TiO2 Nanotube‐Array‐Based Photocatalysts

Microstructure of SiO2/TiO2 hybrid electrospun nanofibers and their application in dye degradation

WO3 Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

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Product

Resources

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Hydrogen Generation from Water Splitting on TiO₂ Nanotube‐Array‐Based Photocatalysts

Hydrogen Generation from Water Splitting on TiO₂ Nanotube‐Array‐Based Photocatalysts

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight