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Surfactant-Free and Controlled Synthesis of Hexagonal CeVO4 Nanoplates: Photocatalytic Activity and Superhydrophobic Property.

Yang X, Zuo W, Li F, Li T - ChemistryOpen (2015)

Bottom Line: During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products.The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane.Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry, Key Lab of Environment Friendly Chemistry and Application of the Ministry of Education, Xiangtan University Xiangtan, 411105, P. R. China.

ABSTRACT
Nanomaterials with both superhydrophobic surface properties as well as photocatalytic activities could have important industrial applications. Herein, we synthesized CeVO4 nanocrystals with hexagonal nanoplate structures from the reaction of decavanadate (K6V10O28⋅9 H2O) and CeCl3⋅H2O precursors via a hydrothermal method. This synthetic route has four advantages: 1) the reaction condition is relatively mild, 2) it doesn't need surfactants or templates, 3) it requires no expensive equipment, and 4) products are of higher purity. During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products. These products were characterized spectrophotometrically and via scanning and transmission electron microscopy. Furthermore, the wettability of the as-synthesized film CeVO4 nanoplates was studied by measuring water contact angle (CA). The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane. Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

No MeSH data available.


SEM images of CeVO4 nanocrystals synthesized at 120 °C at pH 8 (A) and pH 9 (B). The white scale bars represent 100 nm.
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fig03: SEM images of CeVO4 nanocrystals synthesized at 120 °C at pH 8 (A) and pH 9 (B). The white scale bars represent 100 nm.

Mentions: Figure 3 A, a typical scanning electron microscopy (SEM) image of the CeVO4 nanocrystals synthesized at 120 °C and pH 8, shows that the obtained products resemble hexagonal particles. It is also interesting that at pH 9, the products mainly consist of hexagonal and a few peach-like plates, as shown in Figure 3 B. Besides these, small rod-like particles with nonhomogeneous size distribution can also be observed. These results indicate that pH is a key factor in the formation of hexagonal nanoplates.


Surfactant-Free and Controlled Synthesis of Hexagonal CeVO4 Nanoplates: Photocatalytic Activity and Superhydrophobic Property.

Yang X, Zuo W, Li F, Li T - ChemistryOpen (2015)

SEM images of CeVO4 nanocrystals synthesized at 120 °C at pH 8 (A) and pH 9 (B). The white scale bars represent 100 nm.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4522178&req=5

fig03: SEM images of CeVO4 nanocrystals synthesized at 120 °C at pH 8 (A) and pH 9 (B). The white scale bars represent 100 nm.
Mentions: Figure 3 A, a typical scanning electron microscopy (SEM) image of the CeVO4 nanocrystals synthesized at 120 °C and pH 8, shows that the obtained products resemble hexagonal particles. It is also interesting that at pH 9, the products mainly consist of hexagonal and a few peach-like plates, as shown in Figure 3 B. Besides these, small rod-like particles with nonhomogeneous size distribution can also be observed. These results indicate that pH is a key factor in the formation of hexagonal nanoplates.

Bottom Line: During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products.The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane.Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry, Key Lab of Environment Friendly Chemistry and Application of the Ministry of Education, Xiangtan University Xiangtan, 411105, P. R. China.

ABSTRACT
Nanomaterials with both superhydrophobic surface properties as well as photocatalytic activities could have important industrial applications. Herein, we synthesized CeVO4 nanocrystals with hexagonal nanoplate structures from the reaction of decavanadate (K6V10O28⋅9 H2O) and CeCl3⋅H2O precursors via a hydrothermal method. This synthetic route has four advantages: 1) the reaction condition is relatively mild, 2) it doesn't need surfactants or templates, 3) it requires no expensive equipment, and 4) products are of higher purity. During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products. These products were characterized spectrophotometrically and via scanning and transmission electron microscopy. Furthermore, the wettability of the as-synthesized film CeVO4 nanoplates was studied by measuring water contact angle (CA). The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane. Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

No MeSH data available.