Author:
Lechner Anna M.,Feller Tanja,Song Qimeng,Kopera Bernd A. F.,Heindl Lukas,Drechsler Markus,Rosenfeldt Sabine,Retsch Markus
Abstract
AbstractHollow spheres made from titanium dioxide (TiO2) are interesting structures because of their high surface area and low density, combined with semiconducting properties of the TiO2. However, the synthesis is still challenging because of the high reactivity of the titania precursors. Here, we present a simple, reproducible, and scalable way to synthesize TiO2 hollow spheres in the micrometer/sub-micrometer size range comprising three steps: synthesis of polystyrene template particles, growth of TiO2 shells, and calcination to hollow spheres. We investigate the importance of adjusting the seed particle surface functionalization via the appropriate choice of comonomer during the dispersion polymerization. An aging step and a calcination process at low temperatures are mandatory to retain the particle integrity during the seed particle removal. We provide a detailed characterization of each step of this process including electron microscopy, small angle X-ray scattering, and simultaneous thermal analysis.
Funder
Deutsche Forschungsgemeinschaft
H2020 European Research Council
Publisher
Springer Science and Business Media LLC
Subject
Materials Chemistry,Colloid and Surface Chemistry,Polymers and Plastics,Physical and Theoretical Chemistry
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献