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Volume 8
Journal of Biotechnology & Biomaterials
ISSN: 2155-952X
Adv.Biotech 2018
November 15-17, 2018
Page 48
conference
series
.com
November 15-17, 2018 | Berlin, Germany
4
th
International Conference on
Advances in Biotechnology and Bioscience
Riny Yolandha Parapat, J Biotechnol Biomater 2018, Volume 8
DOI: 10.4172/2155-952X-C6-102
Synthesis of highly active Pt nanoparticles with grape seeds (
Vitis vinifera
), mangosteen skin
(
Garcinia mangostana
) and clove (
Syzygium aromaticum
) as the reducing agents
T
he latest development of nanotechnology has been using bio-material as a reducing agent to synthesize nanoparticles.
Bio-materials such as plants can reduce metal ions both on the surface and in the various organs of plants. Plants contain
antioxidant compounds that can reduce metal ions. Here, grape seeds (
Vitis vinifera
), mangosteen skin (
Garcinia mangostana
) and
clove (
Syzygium aromaticum
) were used as reductant. These biomaterials are classified as weak reductants. Grape seed contains
the main antioxidant, oligomeric proanthocyanidins (OPC) of ~78% which plays a main role as a reducing agent, whereas
mangosteen skin contains xanthone (~84%) and clove contains eugenol (~85%) as the main antioxidant. We synthesized Pt
nanoparticles by using the bio-materials mentioned above via microemulsion method. The results from characterization with
transmission electron microscopy show that metal nanoparticles with different shapes were produced. By combining the thermo-
destabilization of microemulsion technique and the use of the bio-reductants, we are able to produce a highly active supported Pt
nanocatalyst. The results show that the activity of the produced Pt nanodendrites is much higher than those which were prepared
with the harmful chemical (hydrazine). This superior activity is due to the anisotropic structure of the produced Pt nanodendrites.
In a challenging reaction such as hydrogenation of levulinic acid, which is normally carried out at high temperature (~240°C) and
high pressure (~100 bar), the produced Pt nanodendrites are able to reach 98% of GVL (biofuel) selectivity at 94% conversion at
a mild reaction condition (1.3 bar and 70°C).
Biography
Riny Yolandha Patapat has completed her PhD at Technical University of Berlin (TU-Berlin). Currently, she is pursuing her Postdoctoral Research at TU-Berlin. She is also
a Lecturer at Itenas, Bandung. Her speciality is in the field of nanomaterial synthesis, catalysis in the greener way and biofuel production.
rinyyolandha@yahoo.deRiny Yolandha Parapat
Technical University of Berlin, Germany