TY - JOUR
T1 - Particle shape optimization by changing from an isotropic to an anisotropic nanostructure
T2 - Preparation of highly active and stable supported Pt catalysts in microemulsions
AU - Parapat, Riny Y.
AU - Wijaya, Muliany
AU - Schwarze, Michael
AU - Selve, Sören
AU - Willinger, Marc
AU - Schomäcker, Reinhard
PY - 2013/1/21
Y1 - 2013/1/21
N2 - We recently introduced a new method to synthesize an active and stable Pt catalyst, namely thermo-destabilization of microemulsions (see R. Y. Parapat, V. Parwoto, M. Schwarze, B. Zhang, D. S. Su and R. Schomäcker, J. Mater. Chem., 2012, 22 (23), 11605-11614). We are able to produce Pt nanocrystals with a small size (2.5 nm) of an isotropic structure i.e. truncated octahedral and deposit them well on support materials. Although we have obtained good results, the performance of the catalyst still needed to be improved and optimized. We followed the strategy to retain the small size but change the shape to an anisotropic structure of Pt nanocrystals which produces more active sites by means of a weaker reducing agent. We found that our catalysts are more active than those we reported before and even show the potential to be applied in a challenging reaction such as hydrogenation of levulinic acid.
AB - We recently introduced a new method to synthesize an active and stable Pt catalyst, namely thermo-destabilization of microemulsions (see R. Y. Parapat, V. Parwoto, M. Schwarze, B. Zhang, D. S. Su and R. Schomäcker, J. Mater. Chem., 2012, 22 (23), 11605-11614). We are able to produce Pt nanocrystals with a small size (2.5 nm) of an isotropic structure i.e. truncated octahedral and deposit them well on support materials. Although we have obtained good results, the performance of the catalyst still needed to be improved and optimized. We followed the strategy to retain the small size but change the shape to an anisotropic structure of Pt nanocrystals which produces more active sites by means of a weaker reducing agent. We found that our catalysts are more active than those we reported before and even show the potential to be applied in a challenging reaction such as hydrogenation of levulinic acid.
UR - http://www.scopus.com/inward/record.url?scp=84871723386&partnerID=8YFLogxK
U2 - 10.1039/c2nr32122j
DO - 10.1039/c2nr32122j
M3 - Article
C2 - 23235742
AN - SCOPUS:84871723386
SN - 2040-3364
VL - 5
SP - 796
EP - 805
JO - Nanoscale
JF - Nanoscale
IS - 2
ER -