This invention discloses a method for preparing a multi-level micro / nano-structured
composite material for
nuclear radiation detection, relating to the field of
nuclear radiation detection technology. Specifically, it utilizes gold-
sulfur self-
assembly technology to modify the surface of a gold
nanoparticle core with
boron-containing molecules, obtaining a functionalized gold
nanoparticle core. This core is then used as a seed, with
chloroauric acid as the gold source, to grow a gold
nanoshell. Finally,
silver nitrate is used as the silver source to deposit a silver
nanoshell in situ, resulting in a multi-level micro / nano-structured
composite material. This multi-level micro / nano-structure uses gold nanoparticles as the core,
boron-containing molecules as the
neutron detection medium, the gold
nanoshell as the surface-enhanced
Raman scattering (SERS) carrier, and the silver nanoshell as the gamma-
ray detection medium. This material possesses both
neutron and gamma-
ray detection capabilities, and the
neutron response of the
boron-containing molecules and the gamma-
ray response of the silver nanoshell can be quantitatively measured using SERS and LSPR
spectroscopy, respectively. This enables efficient discrimination of mixed
radiation field doses and has broad application prospects in the field of
nuclear radiation detection.