Defective Black TiO<sub>2</sub> Synthesized via Anodization for Visible-Light Photocatalysis

Dong, Junye; Han, Jie; Liu, Yangsi; Nakajima, Akira; Matsushita, Sachiko; Wei, Shanghai; Gao, Wei

doi:10.1021/am405549p

Cited by 220 publications

(150 citation statements)

References 27 publications

Supporting

Mentioning

147

Contrasting

Order By: Relevance

“…Oxygen vacancies are undetectable in most white TiO 2 nanomaterials, while oxygen vacancy is considered to be one of the feature defects in most black TiO 2 nanomaterials. Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscope [37][38][39][40]52], Raman spectroscope [9,16,32,[53][54][55], and X-ray diffractometer [23,32,55] [30,33,37,41,52,55,57,59,60].…”

Section: Defectsmentioning

confidence: 99%

“…Electrochemical Oxidation. Defective black anatase TiO 2 nanotubes were synthesized via two-step anodization on Ti foil in ethylene glycol containing 0.25 wt.% NH 4 F and 2 vol.% distilled water at 60 V for 10 h, followed by calcination in the air (Figure 12) [54]. The black TiO 2 with controllable level of defects exhibited a high photocatalytic activity under visible light [54].…”

Section: Magnesium Reductionmentioning

confidence: 99%

See 1 more Smart Citation

Black Titanium Dioxide Nanomaterials in Photocatalysis

Yan

Xia

2017

International Journal of Photoenergy

View full text Add to dashboard Cite

Titanium dioxide (TiO 2 ) nanomaterials are widely considered to be state-of-the-art photocatalysts for environmental protection and energy conversion. However, the low photocatalytic efficiency caused by large bandgap and rapid recombination of photoexcited electrons and holes is a challenging issue that needs to be settled for their practical applications. Structure engineering has been demonstrated to be a highly promising approach to engineer the optical and electronic properties of the existing materials or even endow them with unexpected properties. Surface structure engineering has witnessed the breakthrough in increasing the photocatalytic efficiency of TiO 2 nanomaterials by creating a defect-rich or amorphous surface layer with black color and extension of optical absorption to the whole visible spectrum, along with markedly enhanced photocatalytic activities. In this review, the recent progress in the development of black TiO 2 nanomaterials is reviewed to gain a better understanding of the structure-property relationship with the consideration of preparation methods and to project new insights into the future development of black TiO 2 nanomaterials in photocatalytic applications.

show abstract

Section: Defectsmentioning

confidence: 99%

Section: Magnesium Reductionmentioning

confidence: 99%

Black Titanium Dioxide Nanomaterials in Photocatalysis

Yan

Xia

2017

International Journal of Photoenergy

View full text Add to dashboard Cite

show abstract

“…TiO 2 -based materials are widely applied in sensors [4][5][6][7][8][9] , pollutant degradation 10 , hydrogen generation 11 , bio-applications 12,13 , and photocatalysis [14][15][16][17][18] . Owing to their one-dimensional nature, TiO 2 nanotubes offer a high surface area (1000 m 2 g -1…”

Section: Introductionmentioning

confidence: 99%

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

et al. 2017

View full text Add to dashboard Cite

The evolution of TiO 2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, XRD, XPS, UV-Vis and EIS. The formation of single-or double-walled TiO 2 nanotube structure can be efficiently controlled by the anodization time. For anodization times less than 30 minutes, a compact oxide layer is formed, followed by double-walled nanotube formation up to 120 minutes and single-walled nanotubes up to 240 minutes. XPS analyses show that the samples obtained with short anodization time have a high carbon content and oxygenated surface species compared to the longer-time anodized sample; however, binding energy peaks for Ti 2p remained invariant. The performances of TiO 2 nanotubular photoelectrodes were evaluated in photoelectrochemical water splitting where TiO 2 nanotubes anodized for 120 minutes presented the best performance that was related to their optimal morphology and charge transportation.

show abstract

“…Only T600 possesses low light absorption in UV region, as the presence of Al in the sample may contribute to the decreased light absorption behavior. The relation of colored TiO2 with the enhancement of light absorption properties in visible light range in different methods and morphologies were also reported in several papers [9,[13][14][15][16].…”

Section: Uv-vis Diffuse Reflectance Spectramentioning

confidence: 67%

Visible Light Photocatalytic Properties of Modified Titanium Dioxide Nanoparticles via Aluminium Treatment

Ariyanti

Dong

et al. 2016

Bull. Chem. React. Eng. Catal.

Self Cite

View full text Add to dashboard Cite

Titanium dioxide (TiO2) has gained much attentions for the last few decades due to its remarkable performance in photocatalysis and some other related properties. However, its wide bandgap (~3.2 eV) can only absorb UV energy which is only ~5% of solar light spectrum. The objective of this research was to improve the photocatalytic activity of TiO2 by improving the optical absorption to the visible light range. Here, colored TiO2 nanoparticles range from light to dark grey were prepared via aluminium treatment at the temperatures ranging from 400 to 600 o C. The modified TiO2 is able to absorb up to 50% of visible light (400-700 nm) and shows a relatively good photocatalytic activity in organic dye (Rhodamine B) degradation under visible light irradiation compared with the commercial TiO2. Copyright

show abstract

Defective Black TiO₂ Synthesized via Anodization for Visible-Light Photocatalysis

Cited by 220 publications

References 27 publications

Black Titanium Dioxide Nanomaterials in Photocatalysis

Black Titanium Dioxide Nanomaterials in Photocatalysis

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

Visible Light Photocatalytic Properties of Modified Titanium Dioxide Nanoparticles via Aluminium Treatment

Contact Info

Product

Resources

About

Defective Black TiO2 Synthesized via Anodization for Visible-Light Photocatalysis

Cited by 220 publications

References 27 publications

Black Titanium Dioxide Nanomaterials in Photocatalysis

Black Titanium Dioxide Nanomaterials in Photocatalysis

Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance

Visible Light Photocatalytic Properties of Modified Titanium Dioxide Nanoparticles via Aluminium Treatment

Contact Info

Product

Resources

About

Defective Black TiO₂ Synthesized via Anodization for Visible-Light Photocatalysis