Visible-light-driven photocatalysis on fluorine-doped TiO2 powders by the creation of surface oxygen vacancies

2005 ◽  
Vol 401 (4-6) ◽  
pp. 579-584 ◽  
Author(s):  
Di Li ◽  
Hajime Haneda ◽  
Nitin K. Labhsetwar ◽  
Shunichi Hishita ◽  
Naoki Ohashi
Keyword(s):  
Visible Light ◽  
Oxygen Vacancies ◽  
Surface Oxygen ◽  
Doped Tio2 ◽  
Visible Light Driven ◽  
The Creation

Nitrogen and Fluorine Roles in Visible-Light-Driven Anion-Doped TiO2 Photocatalysis

2005 ◽  
Vol 900 ◽  
Author(s):  
Li Di ◽  
Naoki Ohashi ◽  
Shunichi Hishita ◽  
Taras Kolodiazhnyi ◽  
Hajime Haneda
Keyword(s):  
Comparative Study ◽  
Visible Light ◽  
Oxygen Vacancies ◽  
Surface Acidity ◽  
Esr Spectra ◽  
Surface Oxygen ◽  
Beneficial Effects ◽  
Visible Light Driven ◽  
N Doping ◽  
The Creation

ABSTRACTThis paper describes the synthesis of N-doped, F-doped, and N-F-codoped TiO2 powders (NTO, FTO, NFTO) by spray pyrolysis (SP). An overall comparative study was carried out on these anion-doped powders in order to elucidate the roles of N and F played in visible-light (Vis)-driven photocatalysis. The comparisons in their characteristics were based on the analysis of UV-Vis, PL, NH3-TPD and ESR spectra. As the results, N-doping into TiO2 resulted in both the improvement of Vis absorption and the creation of surface oxygen vacancies (OVs). F-doping produced several beneficial effects including the creation of surface OVs, the enhancement of surface acidity and the increase of Ti3+ ions. The photocatalytic tests indicated that the NFTO demonstrated the highest Vis activity for decomposition of both acetaldehyde and trichloroethylene. This high activity was ascribed to a synergetic consequence of doped N and F.

Hierarchical WO3 microflowers with tailored oxygen vacancies for boosting photocatalytic dye degradation

2021 ◽  
Author(s):  
Jianqiang Qiu ◽  
Fengxia Xu ◽  
Bei Jin ◽  
Yangang Sun ◽  
Jinguo Wang
Keyword(s):  
Visible Light ◽  
Oxygen Vacancies ◽  
Dye Degradation ◽  
Surface Oxygen ◽  
Visible Light Driven ◽  
Photocatalytic Dye Degradation

Hierarchical WO3 microflowers with tailored surface oxygen vacancies show a remarkably boosted activity toward visible-light-driven photocatalytic dye degradation.

Visible-light-driven deep oxidation of NO over Fe doped TiO2 catalyst: Synergic effect of Fe and oxygen vacancies

2020 ◽  
Vol 277 ◽  
pp. 119196 ◽  
Author(s):  
Gang Cheng ◽  
Xin Liu ◽  
Xinjie Song ◽  
Xun Chen ◽  
Wenxin Dai ◽  
...  
Keyword(s):  
Visible Light ◽  
Oxygen Vacancies ◽  
Deep Oxidation ◽  
Synergic Effect ◽  
Doped Tio2 ◽  
Tio2 Catalyst ◽  
Visible Light Driven ◽  
Oxidation Of No

Refining the band structure of BiOBr nanosheets through synergetic effect of VO43 ions replacement and oxygen vacancies for promoted visible-light-driven photocatalysis

CrystEngComm ◽  
2021 ◽  
Author(s):  
Lulu Wang ◽  
Changming Zhao ◽  
Zhengrong Xiang ◽  
Yi Zhang ◽  
Nan Ma ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Oxygen Vacancies ◽  
Synergetic Effect ◽  
Surface Oxygen ◽  
Synergetic Effects ◽  
Visible Light Driven

Normally, the band structure of photocatalyst could be tuned by the surface oxygen vacancies or elements doping, while employing the synergetic effects of surface oxygen vacancies and oxyacid groups replacements...

Ultrastable and Efficient Visible‐light‐driven CO2 Reduction Triggered by Regenerative Oxygen‐vacancies in Bi2O2CO3 Nanosheets

2021 ◽  
Author(s):  
Yongfu Sun ◽  
Xiaolong Zu ◽  
Yuan Zhao ◽  
Xiaodong Li ◽  
Runhua Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Oxygen Vacancies ◽  
Co2 Reduction ◽  
Visible Light Driven

scholarly journals Photocatalytic Overall Water Splitting by SrTiO3 with Surface Oxygen Vacancies

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2572
Author(s):  
Yanfei Fan ◽  
Yan Liu ◽  
Hongyu Cui ◽  
Wen Wang ◽  
Qiaoyan Shang ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Oxygen Vacancies ◽  
Low Cost ◽  
Energy Levels ◽  
Light Response ◽  
Hydrogen Energy ◽  
Surface Oxygen ◽  
Carbon Reduction ◽  
Overall Water Splitting

Strontium Titanate has a typical perovskite structure with advantages of low cost and photochemical stability. However, the wide bandgap and rapid recombination of electrons and holes limited its application in photocatalysis. In this work, a SrTiO3 material with surface oxygen vacancies was synthesized via carbon reduction under a high temperature. It was successfully applied for photocatalytic overall water splitting to produce clean hydrogen energy under visible light irradiation without any sacrificial reagent for the first time. The photocatalytic overall water splitting ability of the as-prepared SrTiO3-C950 is attributed to the surface oxygen vacancies that can make suitable energy levels for visible light response, improving the separation and transfer efficiency of photogenerated carriers.

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