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Journal of Sol-Gel Science and Technology

Erschienen in:

01.03.2016 | Original Paper

Fabrication of hierarchical hollow silica/silver/silica/titania composite particles

verfasst von: Chong Bai, Jin-Qiu Liu, Wei-Liang Liu, Man-Man Ren, Qin-Ze Liu, Xin-Qiang Wang, Xiu-Lan Duan, Yong-Zhong Wu

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 3/2016

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Abstract

Hierarchical composite particles with hollow structure were fabricated in this work. The composite particles were composed of guest particles and host ones, which were achieved by Stöber method, and a raspberry-like morphology was produced by the “anchoring” of guest particles on the surface of host ones. Moreover, the hollow structure was obtained by template-assisted approach. The raspberry-like morphology and hollow structure of composite particles were confirmed by scanning electron microscopy and transmission electron microscopy. As multiple distinct functional components were integrated into the raspberry-like particles, the obtained composite particles exhibited enhanced photocatalytic activity under visible light irradiation. The rate of degradation of the as-prepared composite particles was ca. 13 times faster than that of pure TiO₂ under visible light irradiation. Furthermore, a brief photocatalytic mechanism was presented. The composite particles, combining hierarchical morphology and hollow structure, exhibit promising potential in self-cleaning and nanoreactor areas.

Graphical Abstract

Vorheriger Artikel Study of the growth of hydrophilic iron oxide nanoparticles obtained via the non-aqueous sol–gel method

Nächster Artikel Sol–gel-based zirconia biocoatings on metal structurally enhanced by polyethylene glycol

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Titel: Fabrication of hierarchical hollow silica/silver/silica/titania composite particles
verfasst von: Chong Bai
Jin-Qiu Liu
Wei-Liang Liu
Man-Man Ren
Qin-Ze Liu
Xin-Qiang Wang
Xiu-Lan Duan
Yong-Zhong Wu
Publikationsdatum: 01.03.2016
Verlag: Springer US
Erschienen in: Journal of Sol-Gel Science and Technology / Ausgabe 3/2016
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-015-3884-0

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