A novel thermal exfoliation strategy for the fabrication of high-quality Ag/TiO2 nanosnowman nanoparticles with enhanced photocatalytic properties

作者：Zhang, Chao; Zhou, Yuming^*; Bao, Jiehua; Zhang, Yiwei; Sheng, Xiaoli

来源：New Journal of Chemistry, 2018, 42(8): 6168-6174.

DOI：10.1039/c8nj00302e

• IN-SITU SYNTHESIS
• FACILE SYNTHESIS
• TIO2
• COMPOSITE
• NANOCOMPOSITE
• SURFACE
• AG
• NANOSTRUCTURES
• MICROSPHERES
• NANOFIBERS

A novel thermal exfoliation strategy has been proposed to synthesize high-quality Ag/TiO2 head-body nanosnowman nanoparticles (AgTiNPs, with the head and body being single Ag and TiO2 nanoparticles, respectively) for the first time. The obtained samples were characterized with transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS) and photoluminescence (PL) emission spectra, etc. Results show that loaded Ag nanoparticles could exfoliate with a part of an adjacent caducous TiO2 nanosheet during calcination treatment, thereby fabricating high-quality Ag/TiO2 head-body nanosnowman nanoparticles. The prepared AgTiNPs show a uniform particle size, a high dispersion and enhanced interactions between Ag heads and TiO2 bodies. Compared with calcined Ag/DHS, AgTiNPs exhibit an enhanced photocatalytic performance in the degradation of RhB and solar H-2 production due to improved charge carrier separation. The proposed thermal exfoliation strategy might open up a new method for the fabrication of other semiconductor-metal nanosnowman nanoparticles with enhanced photochemical properties.

• 出版日期2018-4-21
• 单位东南大学