Open AccessStructural properties of `naked' gold nanoparticles formed by synchrotron X‐ray irradiation
Author(s) -
Wang ChangHai,
Chien ChiaChi,
Yu YenLu,
Liu ChiJen,
Lee ChengFeng,
Chen ChihHsiung,
Hwu Y.,
Yang ChungShi,
Je JungHo,
Margaritondo G.
Publication year - 2007
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049507044743
Subject(s) - colloidal gold , synchrotron , irradiation , nanoparticle , synchrotron radiation , scavenger , chemistry , x ray , particle (ecology) , ionic bonding , crystallography , materials science , photochemistry , chemical engineering , nanotechnology , ion , optics , radical , organic chemistry , physics , oceanography , engineering , geology , nuclear physics
The formation of colloidal unmodified (`naked') gold nanoparticles is investigated by irradiation of a precursor solution with X‐rays from a synchrotron source. An interesting morphological evolution as a function of exposure time, from cross‐linked network‐like structure to individual particles, has been discovered. The particle size decreased with the exposure time and was influenced by the ionic strength of the precursor solution. Contrary to γ‐ray exposure, an OH radical scavenger was not required for cluster formation.