Self-assembled double-shelled ferrihydrite hollow spheres with a tunable aperture

Chemistry : a European Journal
Zhengcui WuYi Xie

Abstract

Novel double-shelled hierarchical ferrihydrite hollow spheres (Fe(10)O(14)(OH)(2).4H(2)O) were successfully synthesized on a large scale by using a facile medicine-inspired solution-phase approach. Sodium nitroprusside (SNP), an ordinary and inexpensive medicine for expanding blood vessels, served as both a ferric source and an in situ formed gas-bubble template with the presence of sodium dihydrogen phosphate as a pH regulator, coordinator, and stabilizer. A twice-gas-bubble template model has been proposed for the formation of the double-shelled hollow spheres to take advantage of the dissociation and hydrolyzation of the two kinds of ligands in the SNP precursor. The size of the double-shelled ferrihydrite hollow spheres can be tuned by varying the experimental parameters. As-obtained ferrihydrite is highly sensitive to ethanol gas, which indicates potential applications in the field of sensing devices.

References

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Citations

Jul 3, 2015·Chemical Society Reviews·Jian QiDan Wang
Feb 24, 2015·Chemical Communications : Chem Comm·Chunyu NiuShaomin Zhou
Sep 22, 2018·Advanced Materials·Jiangyan WangDan Wang
Oct 14, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Yang XuYi Xie
Jan 9, 2013·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Chengzhen WeiFeng Gao
Feb 5, 2015·Chemistry, an Asian Journal·Chengzhen WeiHuan Pang
Jan 29, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhenzi LiKang Li
Jul 30, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Noritaka KatoShouzou Koumoto

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