TY - JOUR
T1 - Competition between Hot Carriers and Surface Electrochemistry in Gold Nanorod Dissolution
AU - Lin, Jiamu
AU - Shiratori, Katsuya
AU - West, Claire A.
AU - Al-Zubeidi, Alexander
AU - Jia, Zhenyang
AU - Oh, Hyuncheol
AU - Link, Stephan
AU - Landes, Christy F.
N1 - This work was supported by the U.S. Army DEVCOM ARL Army Research Office (ARO) Electrochemistry Program award no. W911NF-24-1-0087 (to C.F.L. and S.L.). The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Army or the U.S. Government. C.A.W. acknowledges the support from the American Association of University Women American Postdoctoral Fellowship. This work was conducted in part using resources of the Shared Equipment Authority at Rice University.
PY - 2025/6/5
Y1 - 2025/6/5
N2 - Plasmonic nanostructures have the potential to revolutionize photocatalysis by harnessing hot carriers to drive novel chemical reactions. Precise control of reaction sites on nanoparticles remains crucial for advancing catalyst design. The influence of hot carriers, particularly in the interplay with surface electrochemistry, needs further exploration. Employing single-particle spectroelectrochemical methods, we identify the conditions that lead to tip-preferred versus isotropic dissolution. We investigate how the applied potential, excitation laser power density, and wavelength of illumination directly direct gold nanorod dissolution. There is a competition between hot carrier localization and electrochemistry in determining the dissolution anisotropy. We observe that higher potentials favor isotropic dissolution, whereas higher laser power densities drive tip-specific dissolution. The results provide new insights into the control of tuning the gold nanoparticle dissolution anisotropy.
AB - Plasmonic nanostructures have the potential to revolutionize photocatalysis by harnessing hot carriers to drive novel chemical reactions. Precise control of reaction sites on nanoparticles remains crucial for advancing catalyst design. The influence of hot carriers, particularly in the interplay with surface electrochemistry, needs further exploration. Employing single-particle spectroelectrochemical methods, we identify the conditions that lead to tip-preferred versus isotropic dissolution. We investigate how the applied potential, excitation laser power density, and wavelength of illumination directly direct gold nanorod dissolution. There is a competition between hot carrier localization and electrochemistry in determining the dissolution anisotropy. We observe that higher potentials favor isotropic dissolution, whereas higher laser power densities drive tip-specific dissolution. The results provide new insights into the control of tuning the gold nanoparticle dissolution anisotropy.
UR - https://www.scopus.com/pages/publications/105006598131
UR - https://www.scopus.com/pages/publications/105006598131#tab=citedBy
U2 - 10.1021/acs.jpcc.5c01882
DO - 10.1021/acs.jpcc.5c01882
M3 - Article
AN - SCOPUS:105006598131
SN - 1932-7447
VL - 129
SP - 10154
EP - 10162
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 22
ER -