TY - JOUR
T1 - Facile removal of stabilizer-ligands from supported gold nanoparticles
AU - Lopez-Sanchez, Jose A.
AU - Dimitratos, Nikolaos
AU - Hammond, Ceri
AU - Brett, Gemma L.
AU - Kesavan, Lokesh
AU - White, Saul
AU - Miedziak, Peter
AU - Tiruvalam, Ramchandra
AU - Carley, Albert F.
AU - Kiely, Christopher J.
AU - Knight, David
AU - Hutchings, Graham J.
AU - Jenkins, Robert L.
PY - 2011/5/1
Y1 - 2011/5/1
N2 - Metal nanoparticles that comprise a few hundred to several thousand atoms have many applications in areas such as photonics, sensing, medicine and catalysis. Colloidal methods have proven particularly suitable for producing small nanoparticles with controlled morphologies and excellent catalytic properties. Ligands are necessary to stabilize nanoparticles during synthesis, but once the particles have been deposited on a substrate the presence of the ligands is detrimental for catalytic activity. Previous methods for ligand removal have typically involved thermal and oxidative treatments, which can affect the size or morphology of the particles, in turn altering their catalytic activity. Here, we report a procedure to effectively remove the ligands without affecting particle morphology, which enhances the surface exposure of the nanoparticles and their catalytic activity over a range of reactions. This may lead to developments of nanoparticles prepared by colloidal methods for applications in fields such as environmental protection and energy production.
AB - Metal nanoparticles that comprise a few hundred to several thousand atoms have many applications in areas such as photonics, sensing, medicine and catalysis. Colloidal methods have proven particularly suitable for producing small nanoparticles with controlled morphologies and excellent catalytic properties. Ligands are necessary to stabilize nanoparticles during synthesis, but once the particles have been deposited on a substrate the presence of the ligands is detrimental for catalytic activity. Previous methods for ligand removal have typically involved thermal and oxidative treatments, which can affect the size or morphology of the particles, in turn altering their catalytic activity. Here, we report a procedure to effectively remove the ligands without affecting particle morphology, which enhances the surface exposure of the nanoparticles and their catalytic activity over a range of reactions. This may lead to developments of nanoparticles prepared by colloidal methods for applications in fields such as environmental protection and energy production.
U2 - 10.1038/nchem.1066
DO - 10.1038/nchem.1066
M3 - Article
C2 - 21697877
AN - SCOPUS:79959623037
SN - 1755-4330
VL - 3
SP - 551
EP - 556
JO - Nature Chemistry
JF - Nature Chemistry
IS - 7
ER -