| Autor: |
Yang Yang, Hua Yang, Ruishan Li, Xiangxian Wang |
| Předmět: |
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| Zdroj: |
Micro & Nano Letters (Wiley-Blackwell); 2016, Vol. 11 Issue 3, p179-182, 4p |
| Abstrakt: |
Herein is investigated the effect of ultrasonic irradiation on the preparation of Ag3PO4 particles based on the ion-exchange method. X-ray diffraction, scanning electron microscope, diffuse reflectance spectrum and photoluminescence were used to characterise the products. It is found that the application of ultrasonic irradiation at a frequency of 40 kHz leads to the production of uniform spherical particles with an average size of 300 nm. However, at a higher ultrasonic frequency of 60 kHz, the prepared sample presents polyhedron-shaped particles in the size range of 6-8 μm, which are constructed from small grains with a size of several hundred nanometres. Without the aid of ultrasonic irradiation, the samples prepared at room temperature or under 50 °C water-bath condition are composed of spherical particles and large-sized agglomerative particles. The photocatalytic activity of Ag3PO4 samples was evaluated by degrading rhodamine B (RhB) under simulated sunlight irradiation. Among these samples, the one prepared at 40 kHz exhibits the highest photocatalytic activity, where the degradation percentage of RhB reaches 96% after irradiation for 60 min. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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