Communication
ChemComm
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further demonstrate the importance of crystal structures on Au
nanostructures in their catalytic activity.
Using TERS, we have investigated plasmonic and photo-
catalytic properties of thermally-reshaped WAu@PdMPs, along
with their monometallic analogs WAuMPs and AuMPs. We
found that 4-NBT can be reduced to both DMAB and 4-ATP on
these bimetallic WAu@PdMPs. However, on WAuMPs and
AuMPs, only DMAB can be found resulting from the reduction
of 4-NBT. The efficiency of these photo catalyzation are strongly
associated with the nanoscale structure of these microplates.
Our results also show that TERS imaging helps building up
the bridge correlating the nanoscale structural and their corres-
ponding catalytic reactivity on bimetallic nanostructures. Over-
all, our results should aid in guiding the rational design of novel
bimetallic structures.
We are grateful to AgriLife Research of Texas A&M for the
provided financial support. We also acknowledge Governor’s
University Research Initiative (GURI) grant program of Texas
A&M University, GURI Grant Agreement No. 12-2016, M1700437.
PZE acknowledges support from the US Department of Energy,
Office of Science, Office of Basic Energy Sciences, Division of
Chemical Sciences, Geosciences & Biosciences.
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Conflicts of interest
There are no conflicts to declare.
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894 | Chem. Commun., 2021, 57, 891--894
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