This work was supported by the National Natural Science Foundation of China(Grant No.20273035);the National High Technology Research and Development Program of China(863 Program)(Grant Nos.2002AA2Z2031 and 2001AA224032);the Science and Technology Program of Xi'an(Grant No.GG200148).
Using Fe3O4 nano-particles as seeds, a new type of Fe3O4/Au composite particles with core/shell structure and diameter of about 170 nm was prepared by reduction of Au3+ with hydroxylamine in an aqueous solution. Parti...