研究目的
Investigating the photocatalytic performance of novel Ag/TiO2 hierarchical hollow spheres composite in the degradation of Rhodamine 6G (R6G).
研究成果
The novel Ag/TiO2 hollow spheres composite shows enhanced photocatalytic performance due to higher surface area, increased light absorption, and the reduction of electron–hole pair recombination. This composite is superior to pure TiO2 hollow spheres and P25 in the photocatalytic degradation of R6G under UV-vis light irradiation.
研究不足
The study focuses on the photocatalytic degradation of R6G under UV-vis light irradiation, and the stability of the composite was tested for only five cycles. Further research could explore its performance under different light sources and longer stability tests.
1：Experimental Design and Method Selection:
A facile chemical deposition route was used to prepare Ag/TiO2 hierarchical hollow spheres composite.
2：Sample Selection and Data Sources:
Monodisperse polystyrene (PS) particles were prepared by emulsifier-free emulsion polymerization.
3：List of Experimental Equipment and Materials:
FEI Sirion 200 field-emission scanning electronic microscopy (FESEM), high resolution transmission electron microscopy (HRTEM JEOL 2010), X-ray diffraction (XRD, Japan MAC Science Co.), UV-vis spectrophotometer (Shimadzu UV-3310), ASAP 2020 Accelerated Surface Area and Porosimetry System (Micromeritics, Norcross, GA).
4：Experimental Procedures and Operational Workflow:
PS microspheres were coated with TiO2, then Ag NPs were deposited on the surface of TiO2 hollow spheres. The photocatalytic activities were evaluated via decomposing R6G at room temperature under UV-vis light irradiation.
5：Data Analysis Methods:
The photocatalytic degradation process was observed by the change of the absorbance maximum in optical absorption spectra of R6G dye.
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