A facile solution approach to W,N co-doped TiO2 nanobelt thin films with high photocatalytic activity

2015 ◽  
Vol 3 (31) ◽  
pp. 15863-15868 ◽  
Author(s):  
Lu-Lu Lai ◽  
Jin-Ming Wu
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
High Photocatalytic Activity ◽  
Light Illumination ◽  
Direct Oxidation ◽  
Solution Approach ◽  
Visible Light Illumination ◽  
Subsequent Calcination ◽  
Co Doped

W,N co-doped anatase TiO2 nanobelt films were synthesized by direct oxidation of metallic Ti substrates with H2O2 solutions containing H2WO4 and C3H6N6 at 80 °C, followed by a subsequent calcination. The photocatalytic activity of the W,N co-doped anatase TiO2 nanobelt films was nearly three times that of undoped alkali-hydrothermal synthesized anatase TiO2 nanobelt films, under UV and visible light illumination.

SrTaO2N co-doped with La/Zr as promising photocatalysts for water reduction under visible light illumination

2020 ◽  
Vol 7 (12) ◽  
pp. 2343-2351
Author(s):  
Ran Wang ◽  
Guoan Lin ◽  
Xiaoxiang Xu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
Light Illumination ◽  
Visible Light Absorption ◽  
Water Reduction ◽  
Co Doping ◽  
Visible Light Illumination ◽  
Co Doped ◽  
Separation Conditions

La/Zr co-doping preserves visible light absorption of SrTaO2N, prohibits the formation of defects, improves surface hydrophilicity and charge separation conditions, all of which contribute to an enhanced photocatalytic activity for water reduction.

scholarly journals Sulfur-, nitrogen- and platinum-doped titania thin films with high catalytic efficiency under visible-light illumination

2018 ◽  
Vol 9 ◽  
pp. 1629-1640 ◽  
Author(s):  
Boštjan Žener ◽  
Lev Matoh ◽  
Giorgio Carraro ◽  
Bojan Miljević ◽  
Romana Cerc Korošec
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Sol Gel ◽  
Catalytic Efficiency ◽  
Dip Coating ◽  
Light Illumination ◽  
Organic Pigment ◽  
Visible Light Illumination ◽  
Doped Titania

Titanium dioxide photocatalysts have received a lot of attention during the past decades due to their ability to degrade various organic pollutants to CO2 and H2O, which makes them suitable for use in environmental related fields such as air and water treatment and self-cleaning surfaces. In this work, titania thin films and powders were prepared by a particulate sol–gel route, using titanium tetrachloride (TiCl4) as a precursor. Afterwards, the prepared sols were doped with nitrogen (ammonium nitrate, urea), sulfur (thiourea) and platinum (chloroplatinic acid), coated onto glass substrates by dip-coating, and thermally treated in a muffle furnace to promote crystallization. The resulting thin films were then characterized by various techniques (i.e., TGA-DSC-MS, XRD, BET, XPS, SEM, band gap measurements). The photocatalytic activity of the prepared thin films was determined by measuring the degradation rate of plasmocorinth B (PB), an organic pigment used in the textile industry, which can pose an environmental risk when expelled into wastewater. A kinetic model for adsorption and subsequent degradation was used to fit the experimental data. The results have shown an increase in photocatalytic activity under visible-light illumination of nonmetal and metal doped and co-doped titania thin films compared to an undoped sample.

scholarly journals Bandgap Tailored TiO2 Thin Films by Addition of SiO2 for Enhanced Photocatalytic Activity against Congo Red under Visible Light Illumination

2017 ◽  
Vol 29 (5) ◽  
pp. 1085-1090
Author(s):  
M. Sankareswari ◽  
R. Vidhya ◽  
P. Malliga ◽  
I. Rathinamala ◽  
S. Karuthapandian ◽  
...  
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Congo Red ◽  
Light Illumination ◽  
Tio2 Thin Films ◽  
Visible Light Illumination

scholarly journals Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-C3N4 Composite for Rhodamine B (RhB) Degradation

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3948
Author(s):  
Lingfang Qiu ◽  
Zhiwei Zhou ◽  
Mengfan Ma ◽  
Ping Li ◽  
Jinyong Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Redox Reactions ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Thermal Polymerization ◽  
Light Illumination ◽  
Electron Hole ◽  
Visible Light Illumination ◽  
Visible Light Photocatalytic

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-C3N4 composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NH4Cl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-C3N4 is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail. The optimized SAPO-5/g-C3N4 composite shows promising degradation efficiency which is 40.6% higher than that of pure g-C3N4. The degradation rate improves from 0.007 min−1 to 0.022 min−1, which is a comparable photocatalytic performance compared with other g-C3N4-based heterojunctions for dye degradation. The migration of photo-induced electrons from g-C3N4 to the Al site of SAPO-5 should promote the photo-induced electron-hole pairs separation rate of g-C3N4 efficiently. Furthermore, the redox reactions for RhB degradation occur on the photo-induced holes in the g-C3N4 and Al sites in SAPO-5, respectively. This achievement not only improves the photocatalytic activity of g-C3N4 efficiently, but also broadens the application of SAPOs in the photocatalytic field.

Ultrathin CdS shell-sensitized hollow S-doped CeO2 spheres for efficient visible-light photocatalysis

2019 ◽  
Vol 9 (6) ◽  
pp. 1357-1364 ◽  
Author(s):  
Ning-Chao Zheng ◽  
Ting Ouyang ◽  
Yibo Chen ◽  
Zhu Wang ◽  
Di-Yun Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Shell Structure ◽  
Evolution Rate ◽  
Light Illumination ◽  
Visible Light Photocatalysis ◽  
Visible Light Illumination ◽  
Excellent Photocatalytic Activity ◽  
Systematic Effects ◽  
Doped Ceo2

By virtue of the systematic effects of S-doping on CeO2 and the ultrathin shell structure of CdS, the CeO2−xSx@CdS nanocomposite exhibits excellent photocatalytic activity under visible-light illumination for both H2 evolution (rate up to 1147.2 μmol g−1 h−1) and RhB degradation (efficiency reached 99.8%) as compared to CeO2, CeO2−xSx, and CdS.

Hollow BiVO4/Bi2S3 cruciate heterostructures with enhanced visible-light photoactivity

2019 ◽  
Vol 9 (1) ◽  
pp. 182-187 ◽  
Author(s):  
Chen Zhuang ◽  
Lanqin Tang ◽  
Zhentao Yu ◽  
Tianxiao Peng ◽  
Yongcai Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Anion Exchange ◽  
Light Illumination ◽  
Photocurrent Response ◽  
Exchange Reactions ◽  
Visible Light Illumination

Unique BiVO4/Bi2S3 cruciate hollow heterostructures are successfully constructed via anion exchange reactions using cruciate BiVO4 as templates and precursors. The hollow heterostructures exhibit excellent enhanced photocurrent response and photocatalytic activity for reduction of Cr6+ under visible-light illumination.

scholarly journals Electrical investigation of TiO2 thin films coated on glass and silicon substrates—effect of UV and visible light illumination

2015 ◽  
Vol 6 (4) ◽  
pp. 591-598 ◽  
Author(s):  
Saranya Amirtharajan ◽  
Pandiarajan Jeyaprakash ◽  
Jeyakumaran Natarajan ◽  
Prithivikumaran Natarajan
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Silicon Substrates ◽  
Light Illumination ◽  
Tio2 Thin Films ◽  
Electrical Investigation ◽  
Visible Light Illumination
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