Ripening of bimodally distributed AgCl nanoparticles

Sheng Peng; Yugang Sun

doi:10.1039/C1JM10475F

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Journal of Materials Chemistry

Issue 31, 2011

Journal of Materials Chemistry was published between 1991 and 2012. From issue 1, 2013, it was replaced by three new journals: Journal of Materials Chemistry A, B and C

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Paper

Ripening of bimodally distributed AgCl nanoparticles

Sheng Peng^a and Yugang Sun*^a

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Corresponding authors

Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, USA
E-mail: ygsun@anl.gov

J. Mater. Chem., 2011,21, 11644-11650

DOI: 10.1039/C1JM10475F
Received 30 Jan 2011, Accepted 04 Apr 2011
First published online 07 Jun 2011

This article is part of themed collection: Chemical Transformations of Nanoparticles

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Ripening of AgCl nanoparticles with a bimodal size distribution has been carefully studied in ethylene glycol containing poly(vinyl pyrrolidone) (PVP) as capping molecules and at elevated temperatures (e.g., 160 °C). The resulting AgCl particles exhibit high uniformity in size and cube-tetrapod morphology that are significantly different from the original AgCl nanoparticles. In addition, enhanced reducing ability of ethylene glycol at high temperature partially reduces AgCl to form Ag nanocrystalline domains in the AgCl particles, leading the AgCl particles to be efficiently absorbing visible light and to serve as a class of visible-light-driven photocatalysts due to the strong surface plasmon resonance (SPR) associated with the Ag nanocrystallites.