Abstract—This work efforts to demonstrates synthesis and
potential employment of bimetallic alloy and multimetallic
coexisting mixture of metal nanoparticles (NPs) using spherical
nonstoichiometric polyelectrolyte complexes (PECs) in aqueous
solution, whereas PECs act both as a template to implant metal
precursors and nanoreactor for diverse architecture of metal
NPs. Alloy-type metal NP-embedded PECs were synthesized by
drop wise mixing of two types of oppositely-charged weak PEs
preloaded with metal precursors followed by coreduction
process. Furthermore, individual metal NPs (e.g. Au, Ag, or Pd)
stabilized by PEs were mixed into a different volume ratio and
results in bi- or tri-metallic NP-embedded PECs structure
where each NPs exist as separate entities rather than alloy or
core-shell structure. Catalytic activities of the synthesized
materials were tested for reduction of 4-nitrophenol to useable
4-aminophenol. Moreover, they exhibit promising
performances for surface enhanced Raman scattering (SERS)
activities.
Index Terms—Alloy, nanoreactor, nonstoichiometric
polyelectrolyte complexes, synergistic effect.
Md. S. Islam and H.-J. Lee are with the Jeonju Centre of Korea Basic
Science Institute, 664-14 Dukjindong 1-ga, Dukjin-gu, Jeonju, 561-756,
Korea (e-mail: shahinul@jbnu.ac.kr, hajinlee@kbsi.re.kr).
W. S. Choi is with the Department of Chemical and Biological
Engineering, Hanbat National University, San 16-1, Dukmyoung dong,
Yuseong-gu, Daejeon 305-719, Korea (e-mail: choiws@hanbat.ac.kr).
[PDF]
Cite:Md. Shahinul Islam, Won San Choi, and Ha-Jin Lee, "Nonstoichiometric Polyelectrolyte Complexes: Smart Nanoreactors for Alloy and Multimetallic Catalyst," International Journal of Materials, Mechanics and Manufacturing vol. 2, no. 1, pp. 1-4, 2014.
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