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Scanning Electrochemical and Photoelectrochemical Microscopy on Finder Grids: Toward Correlative Multitechnique Imaging of Surfaces

Journal Article · · Analytical Chemistry
 [1];  [2];  [3];  [3];  [4]
  1. Queens College, City Univ. of New York, Flushing, NY (United States); Queens College, City University of New York
  2. Queens College, City Univ. of New York, Flushing, NY (United States); The Graduate Center of CUNY, NY (United States)
  3. Cornell Univ., Ithaca, NY (United States)
  4. Queens College, City Univ. of New York, Flushing, NY (United States)

Scanning electrochemical microscopy (SECM) is a powerful technique for mapping surface reactivity and investigating heterogeneous processes on the nanoscale. Despite significant advances in high-resolution SECM and photo-SECM imaging, they cannot provide atomic scale structural information about surfaces. By correlating the SECM images with atomic scale structural and bonding information obtained by transmission electron microscopy (TEM) techniques with one-to-one correspondence, one can elucidate the nature of the active sites and understand the origins of heterogeneous surface reactivity. Here, to enable multitechnique imaging of the same nanoscale portion of the electrode surface, we develop a methodology for using a TEM finder grid as a conductive support in SECM and photo-SECM experiments. In this paper, we present the results of our first nanoscale SECM and photo-SECM experiments on carbon TEM grids, including imaging of semiconductor nanorods.

Research Organization:
Queens College, City Univ. of New York, Flushing, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation
Grant/Contract Number:
SC0017603; SC0004911
OSTI ID:
1772807
Journal Information:
Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 13 Vol. 93; ISSN 0003-2700
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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