Abstracts Book - IMRC 2018

• SF3-O035
TEMPLATE-FREE SELF-ASSEMBLED PLATINUM NANOPARTICLES
FOR THE REDUCTION OF ORGANIC POLLUTANTS
Naveen Kumar Reddy Bogireddy 1 , Vivechana Agarwal 1 , Mohan Kumar Kesarla 2 , Lorenzo
Martinez Gomez 2 , Jose Manuel Domínguez Esquivel 3
1 Universidad Autónoma del Estado de Morelos, CIICAp - Material science and engineering,
Mexico. 2 Universidad Nacional Autónoma de México, Material Science, Mexico. 3 Instituto
Mexicano del Petróleo, Material science, Mexico.
Self-assembly of nanoparticles has turned out to be one of the powerful
techniques for controlling their properties. Here we report, a simple ecofriendly
synthesis of self-assembled platinum nanoparticles (SA-PtNPs) into submicron
structures in the absence of interfaces, template or external fields. Due
to the possible near-field coupling between the surface plasmons of adjacent
nanoparticles, biomass capped small NPs (< 4nm) revealed broad extinction the
UV to visible region with dual absorption peak in the UV range. Transmission
and scanning electron microscopy confirmed the formation of very small Pt
nanoparticles assembled in the form of square-shaped microstructures. The
synthesized SA-PtNPs are shown to act as efficient catalysts for the relatively fast
reduction of industrial pollutants (in aqueous as well as adsorbed state) such as
4-NP, MB and 4-NP/MB(mixed), with the activity parameter of 0.75, 0.68 and 0.94
s −1 mg −1 respectively. Furthermore, the reusability of SA-PtNPs was tested for 5
consecutive cycles and was found to be active without any significant change in
the catalytic capability.
Acknowledgment:
Naveen Kumar Reddy Bogireddy acknowledges the CONACyT for the Ph.D.
scholarship no. 614234.
Keywords: Self-assembly, PtNPs, catalytic reduction
Presenting authors email: nsbogireddy@gmail.com