Facile Fabrication of Composite Ag/Fe₃O₄ and Porous Fe₃O₄ Nanorods Based on Oblique Angle Codeposition

Abstract

Composite Ag/Fe 3 O 4 and porous Fe 3 O 4 nanorods with controlled shape, size, composition, and porosity were fabricated by oblique angle codeposition as well as subsequent annealing and chemical etching. The codeposition supplies a way to evaporate two materials simultaneously to form composites, which would lead to a greater variety of nanorods. The composite Ag/Fe 3 O 4 and porous Fe 3 O 4 nanorods showed ferromagnetism, tunable optical properties, and strong carrier capability, which are believed to benefit the applications of biosensing, bioimaging, catalysis, targeted drug delivery, and therapeutic agent.