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http://pubs.acs.org/cgi-bin/arti ... 9/pdf/cm801407q.pdf One-Pot Synthesis of Uniform Cu2O and CuS Hollow Spheres and Their Optical Limiting Properties The shell thickness of these hollow spheres can be adjusted through the choice of the bromide source used for the formation of intermediate templates. Specifically, thick-shell hollow spheres (about 130−180 nm in shell thickness) were obtained by using CuBr solid spheres as the templates, which were formed by the reduction of CuBr2 with ascorbic acid; on the other hand, thin-shell hollow spheres (about 20−25 nm in shell thickness) were obtained by using spherical aggregates consisting of the Cu+, Br−, and (C4H9)4N+ ions as the templates, which were formed by the reduction of CuCl2 with ascorbic acid in the presence of (C4H9)4NBr. |
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