C-doped hollow TiO2 spheres: in situ synthesis, controlled shell thickness, and superior visible-light photocatalytic activity

Zhang, Ying; Zhao, Zhiyuan; Chen, Juanrong; Cheng, Li; Chang, Jun; Wang, Sheng; Hu, Changyuan; Cao, Shunsheng

doi:10.1016/j.apcatb.2014.10.063

Cited by 277 publications

(127 citation statements)

References 43 publications

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“…464.1 eV can be assigned to Ti 2p 1/2 . The positions of the all the peaks observed were in good agreement with the data typically reported in the literature [28,29].…”

Section: X-ray Photoelectron Spectroscopy (Xps) Resultssupporting

confidence: 80%

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

et al. 2017

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Bismuth complex oxides, in particular, bismuth tungstate, have recently attracted attention as promising photocatalytic materials for water treatment processes. In the present work, photocatalytic bismuth tungstate films were prepared by pulsed direct current (DC) reactive magnetron sputtering of Bi and W targets in an Ar/O 2 atmosphere onto spherically-shaped glass beads. The uniform coverage of the substrate was enabled by the use of oscillating bowl placed underneath the magnetrons. The atomic ratio of Bi/W was varied through the variation of the power applied to the magnetrons. The deposited coatings were analyzed by the scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy and atomic force microscopy. The photocatalytic properties of the films were studied via the methylene blue (MB) degradation process under artificial (fluorescent light) and natural (sunlight) irradiation, and compared to the photocatalytic performance of titanium dioxide coatings deposited onto identical substrates. The results showed that the photocatalytic performance of bismuth tungstate and bismuth oxide-coated beads was superior to that exhibited by TiO 2 -coated beads. Overall, reactive magnetron co-sputtering has been shown to be a promising technique for deposition of narrow band gap bismuth-based semiconducting oxides onto irregularly-shaped substrates for potential use in water treatment applications.

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“…464.1 eV can be assigned to Ti 2p 1/2 . The positions of the all the peaks observed were in good agreement with the data typically reported in the literature [28,29].…”

Section: X-ray Photoelectron Spectroscopy (Xps) Resultssupporting

confidence: 80%

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

et al. 2017

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“…Titanium oxide (TiO 2 )-based nanomaterials are generally considered to be the most reliable photocatalytic materials for the decomposition of toxic and hazardous organic pollutants. However, TiO 2 can absorb only a small portion of the solar spectrum in the ultraviolet region because of the wide band gap energy (TiO 2 , 3.2 eV), and meanwhile, the fast recombination of the photogenerated electron/hole (e − /h + ) reduces the photonic efficiency and represents the major drawback of photocatalytic applications [1][2][3][4]. So, a single-component Abbreviations: MO, methyl orange; MoS2, molybdenum dichalcogenides; TiO2, titanium dioxide; XRD, X-ray diffraction; FTIR, Fourier transform infrared spectroscopy; SEM, scanning electron microscope; TEM, transmission electron microscope; PL, photoluminescence; UV-vis, ultraviolet visible.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of TiO2/MoS2@zeolite photocatalyst and its photocatalytic activity for degradation of methyl orange under visible light

Zhang

Xiao

Zheng

et al. 2015

Applied Surface Science

136

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“…Hydrophobic surfaces have several self-cleaning advantages when compared to hydrophilic surfaces. These advantages include the reduced potential adhesion of bacterial activities and extra cleaning activity (Zhang et al, 2015a). Functionalizing TiO 2 through the modification of surface morphology has an added benefit of increasing smoothness and lowering free energy on the surface.…”

Section: Hydrophobic Propertiesmentioning

confidence: 99%

“…The aim of creating hydrophobic surface coating is usually to prevent hydrophilic TiO 2 conversion through irradiation when it displays photocatalytic and hydrophobic characteristics. The transparency of hydrophobic films were investigated by through calcination of a mixture of titanium acetylacetonate and aluminum acetylacetonate, then coated with fluoroalkylsilane (Zhang et al, 2015a). The films were characterized according to their porous and smooth surface where the roughness was correlated to TiO 2 concentration.…”

Section: Hydrophobic Propertiesmentioning

confidence: 99%

Recent Progress in Self-Cleaning Materials with Different Suitable Applications

Chermahini¹,

Ostad‐Ali‐Askari²,

Eslamian³

et al. 2018

American Journal of Engineering and Applied Sciences

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Self-cleaning properties have received significant attention for the importance of their potential. Coatings at Nano-scales offer possibilities of using materials for self-cleaning surfaces. Recent efforts have begun to focus on the kinds of materials including metals, semiconductors and polymers. Such materials can have enormous potential in only a few applications. Moreover, the production of these materials requires high costs with low photo activity. In this regard, TiO 2 and its derived materials have shown acceptable and effective suggestions for this application. Moreover, the mechanism of self-cleaning has been explained by the effect of hydrophilic and hydrophobic. Hydrophilic and hydrophobic can have many applications in different areas like water purification, microfluidics and photovoltaic. In this review, the application of self-cleaning in solar cells and environment as well as TiO 2 derived materials and their applications in water management have been briefly illustrated. In addition, it has been explained that a huge number of self-cleaning materials, applications and improvement in utilities have been essential. In short, we have conducted a comprehensive review of the new approach and to mention numerous materials with hydrophobic and hydrophilic properties would be promising for most environmental concerns. Bio-inspired surface respond in nature through hydrophobic (Cicada Wing, Butterfly Wing, Lotus Leaf, Rice Leaf) and hydrophilic (Fish Scale, Snail Shell, Shark Skin) properties was divided in 4 and 3 respectively. Anti reflective coatings with self-cleaning properties have drowned considerable attention for both their basic appearances and vast applied usages. Antireflective coatings with self-cleaning properties have been considered because of their fascinating features and vast diversity of empirical uses.

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C-doped hollow TiO2 spheres: in situ synthesis, controlled shell thickness, and superior visible-light photocatalytic activity

Cited by 277 publications

References 43 publications

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

Reactive Magnetron Sputter Deposition of Bismuth Tungstate Coatings for Water Treatment Applications under Natural Sunlight

Fabrication of TiO2/MoS2@zeolite photocatalyst and its photocatalytic activity for degradation of methyl orange under visible light

Recent Progress in Self-Cleaning Materials with Different Suitable Applications

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