Open AccessCorrosion‐Protected Hybrid Nanoparticles
Author(s) -
Jeong HyeonHo,
AlarcónCorrea Mariana,
Mark Andrew G.,
Son Kwanghyo,
Lee TungChun,
Fischer Peer
Publication year - 2017
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201700234
Subject(s) - nanoparticle , materials science , nanotechnology , corrosion , aqueous solution , atomic layer deposition , plasmon , plasmonic nanoparticles , flexibility (engineering) , layer (electronics) , chemical engineering , chemistry , metallurgy , optoelectronics , organic chemistry , statistics , mathematics , engineering
Nanoparticles composed of functional materials hold great promise for applications due to their unique electronic, optical, magnetic, and catalytic properties. However, a number of functional materials are not only difficult to fabricate at the nanoscale, but are also chemically unstable in solution. Hence, protecting nanoparticles from corrosion is a major challenge for those applications that require stability in aqueous solutions and biological fluids. Here, this study presents a generic scheme to grow hybrid 3D nanoparticles that are completely encapsulated by a nm thick protective shell. The method consists of vacuum‐based growth and protection, and combines oblique physical vapor deposition with atomic layer deposition. It provides wide flexibility in the shape and composition of the nanoparticles, and the environments against which particles are protected. The work demonstrates the approach with multifunctional nanoparticles possessing ferromagnetic, plasmonic, and chiral properties. The present scheme allows nanocolloids, which immediately corrode without protection, to remain functional, at least for a week, in acidic solutions.