TY - JOUR
T1 - Imaging the electrocatalytic activity of single nanoparticles
AU - Shan, Xiaonan
AU - Díez-Pérez, Ismael
AU - Wang, Luojia
AU - Wiktor, Peter
AU - Gu, Ying
AU - Zhang, Lihua
AU - Wang, Wei
AU - Lu, Jin
AU - Wang, Shaopeng
AU - Gong, Qihuang
AU - Li, Jinghong
AU - Tao, Nongjian
N1 - Funding Information:
This work was supported by the National Science Foundation (CHE-1105588), the National Natural Science Foundation of China (no. 11121091), the National Basic Research Program of China (no. 2011CB935704) and the Natural Science Foundation of China (no. 20975060). I.D.P. thanks the Ramony Cajal program from the Spanish Government and EU International Reintegration Grant (FP7-PEOPLE-2010-RG-277182) for financial support. The authors thank Zhengtao Deng for his help to obtain TEM images of platinum nanoparticle.
PY - 2012/8/26
Y1 - 2012/8/26
N2 - The electrocatalytic properties of nanoparticles depend on their size, shape and composition. These properties are typically probed by measuring the total electrocatalytic reaction current of a large number of nanoparticles, but this approach is time-consuming and can only measure the average catalytic activity of the nanoparticles under study. However, the identification of new catalysts requires the ability to rapidly measure the properties of nanoparticles synthesized under various conditions and, ideally, to measure the electrocatalytic activity of individual nanoparticles. Here, we show that a plasmonic-based electrochemical current-imaging technique can simultaneously image and quantify the electrocatalytic reactions of an array of 1.6 × 10 5 platinum nanoparticles printed on an electrode surface, which could facilitate high-throughput screening of the catalytic activities of nanoparticles. We also show that the approach can be used to image the electrocatalytic reaction current and measure the cyclic voltammograms of single nanoparticles.
AB - The electrocatalytic properties of nanoparticles depend on their size, shape and composition. These properties are typically probed by measuring the total electrocatalytic reaction current of a large number of nanoparticles, but this approach is time-consuming and can only measure the average catalytic activity of the nanoparticles under study. However, the identification of new catalysts requires the ability to rapidly measure the properties of nanoparticles synthesized under various conditions and, ideally, to measure the electrocatalytic activity of individual nanoparticles. Here, we show that a plasmonic-based electrochemical current-imaging technique can simultaneously image and quantify the electrocatalytic reactions of an array of 1.6 × 10 5 platinum nanoparticles printed on an electrode surface, which could facilitate high-throughput screening of the catalytic activities of nanoparticles. We also show that the approach can be used to image the electrocatalytic reaction current and measure the cyclic voltammograms of single nanoparticles.
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U2 - 10.1038/nnano.2012.134
DO - 10.1038/nnano.2012.134
M3 - Article
C2 - 22922540
AN - SCOPUS:84871041829
SN - 1748-3387
VL - 7
SP - 668
EP - 672
JO - Nature nanotechnology
JF - Nature nanotechnology
IS - 10
ER -