Synthesis of WO3 nanoparticles by citric acid-assisted precipitation and evaluation of their photocatalytic properties

“…Today's advances in nano-science and nanotechnology make possible the use of nanomaterials to develop more cost effective and environmentally acceptable water purification processes [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic degradation of methylene blue: Preparation of TiO2/reduced graphene oxide nanocomposites by direct sol-gel and hydrothermal methods

Atout

Álvarez

Chebli

et al. 2017

Materials Research Bulletin

View full text Add to dashboard Cite

Highlights• TiO2-RGO nanocomposites presented, in all the cases studied, improved photocatalytic properties compared to bare TiO2.• An optimal composition, in terms of TiO2/RGO ratio was found in both series of nanocomposites; however, superior activity was found for those prepared by direct sol-gel route.• Nanocomposites prepared by sol-gel method presented improved textural properties than those prepared following a hydrothermal route.• Optimization in the preparation of hybrid photocatalystsis needed to obtain materials with finer properties for effective application in environmental AbstractIn this study, two different preparation methods of titanium dioxide nanoparticles/reduced graphene oxide nanocomposites were investigated using direct sol-gel method followed by 3 hydrothermal treatment or simple hydrothermal route. A different amount of graphene (1-20%) was mixed with TiO2 for both series of samples in order to improve the photocatalytic activity. The influence of the preparation method on the physico-chemical properties was established by different characterization methods and the photocatalytic degradation of methylene blue (MB) under UV light irradiation was used as test reaction. The highest photocatalytic activity was observed for the nanocomposites containing 10 wt% of graphene.The elimination of MB can reach 93% and 82% for the nanocomposites with 10 wt% graphene prepared by the sol-gel and hydrothermal methods, respectively. These photocatalysts are promising for practical application in nanotechnology.

show abstract

“…Several semiconductor oxides have been proposed as photocatalysts, in particular WO 3 oxide has attractive properties such as a small energy band gap (2.5-2.8 eV), and a high oxidation power of their photogenerated holes ( þ 3.1V NHE ) which are capable to oxidize H 2 O to O 2 [7,8]. Several methods have been developed to synthesize WO 3 in order to improve their textural properties, and consequently increase the photocatalytic activity [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Precipitation synthesis of WO3 for NO removal using PEG as template

Luévano-Hipólito¹,

Cruz²,

Yu³

et al. 2014

Ceramics International

Self Cite

View full text Add to dashboard Cite

Synthesis of WO3 nanoparticles by citric acid-assisted precipitation and evaluation of their photocatalytic properties

Cited by 91 publications

References 32 publications

Mesoporous WO3 photocatalyst for the partial oxidation of methane to methanol using electron scavengers

Mesoporous WO3 photocatalyst for the partial oxidation of methane to methanol using electron scavengers

Enhanced photocatalytic degradation of methylene blue: Preparation of TiO2/reduced graphene oxide nanocomposites by direct sol-gel and hydrothermal methods

Precipitation synthesis of WO3 for NO removal using PEG as template

Contact Info

Product

Resources

About