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Reverse microemulsion synthesis of layered gadolinium hydroxide
Xu, Yadong Suthar, Jugal Egbu, Raphael Weston, Andrew J. Fogg, Andrew M. Williams, Gareth R.
Xu, Yadong
Suthar, Jugal
Egbu, Raphael
Weston, Andrew J.
Fogg, Andrew M.
Williams, Gareth R.
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2017-11-05
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Abstract
A reverse microemulsion approach has been explored for the synthesis of layered gadolinium hydroxide (LGdH) nanoparticles in this work. This method uses oleylamine as a multifunctional agent, acting as surfactant, oil phase and base. 1-butanol is additionally used as a co-surfactant. A systematic study of the key reaction parameters was undertaken, including the volume ratio of surfactant (oleylamine) to water, the reaction time, synthesis temperature, and the amount of co-surfactant (1-butanol) added. It proved possible to obtain pristine LGdH materials at temperatures of 120 °C or below with an oleylamine: water ratio of 1:4. Using larger amounts of surfactant or higher temperatures caused the formation of Gd(OH)3, either as the sole product or as a major impurity phase. The LGdH particles produced have sizes of ca. 200 nm, with this size being largely independent of temperature or reaction time. Adjusting the amount of 1-butanol co-surfactant added permits the size to be
varied between 200 and 300 nm.
Citation
Xu, Y., Suthar, J., Egbu, R., Weston, A. J., Fogg, A. M. & Williams, G. R. (2018). Reverse microemulsion synthesis of layered gadolinium hydroxide. Journal of Solid State Chemistry, 258, 320-27.
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Elsevier
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Journal of Solid State Chemistry
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Article
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en
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0022-4596