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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.


The FT-IR spectrum of CeVO4 nanocrystals synthesized at 140 °C and pH 9.
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fig02: The FT-IR spectrum of CeVO4 nanocrystals synthesized at 140 °C and pH 9.

Mentions: To further confirm the formation of the CeVO4 crystal structure, Fourier transform infrared (FT-IR) spectroscopy was performed on the as-prepared CeVO4 nanocrystals, as shown in Figure 2. A strong absorption band at 814 cm−1 and a weak band at 518 cm−1 can be attributed to the adsorption of V−O (from the VO43− group) and Ce−O bond, respectively,28 which implies that the crystalline CeVO4 phase has formed in the as-prepared product. The absorption bands located at 3430 cm−1 and 1629 cm−1 can be ascribed to the O−H stretching and bending vibration of water. Because the product was prepared in aqueous solution, its surface can be inevitably covered with absorbed water molecules.


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

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

The FT-IR spectrum of CeVO4 nanocrystals synthesized at 140 °C and pH 9.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig02: The FT-IR spectrum of CeVO4 nanocrystals synthesized at 140 °C and pH 9.
Mentions: To further confirm the formation of the CeVO4 crystal structure, Fourier transform infrared (FT-IR) spectroscopy was performed on the as-prepared CeVO4 nanocrystals, as shown in Figure 2. A strong absorption band at 814 cm−1 and a weak band at 518 cm−1 can be attributed to the adsorption of V−O (from the VO43− group) and Ce−O bond, respectively,28 which implies that the crystalline CeVO4 phase has formed in the as-prepared product. The absorption bands located at 3430 cm−1 and 1629 cm−1 can be ascribed to the O−H stretching and bending vibration of water. Because the product was prepared in aqueous solution, its surface can be inevitably covered with absorbed water molecules.

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.