Experimental
and Theoretical Studies on the Effects of Magnetic Fields on the Arrangement
of Surface Spins and the Catalytic Activity of Pd Nanoparticles
posted on 2015-03-25, 00:00authored byRan Li, Yang Yang, Ren Li, Qianwang Chen
Nanocatalysts
have very high catalytic activities due to surface atoms with their
unpaired spins. It is the purpose of this paper to investigate the
effect of magnetic fields (MFs) on the arrangement of surface spins
and their catalytic activities. Pd nanoparticles supported on MIL-100(Cr)
were selected as catalysts for the reduction of 4-nitrophenol under
MFs. The result demonstrates that MFs can reduce the reaction time
from 2.6 to 1.4 min under 0.5 T. This study first shows that the configuration
of surface spins has an effect on the catalytic activity, which can
be regulated by a foreign MF.