Hot Electrons at Solid–Liquid Interfaces: A Large Chemoelectric Effect during the Catalytic Decomposition of Hydrogen Peroxide. Issue 36 (4th July 2016)

• Record Type: Journal Article
• Authors: Nedrygailov, Ievgen I.; Lee, Changhwan; Moon, Song Yi; Lee, Hyosun; Park, Jeong Young
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 36(2016)
• Page Start: 10859
• Page End: 10862
• Publication Date: 2016-07-04
• Subjects: hot electrons -- hydrogen peroxide -- metal-semiconductor interface -- Schottky diode -- surface reactions; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201603225
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The study of energy and charge transfer during chemical reactions on metals is of great importance for understanding the phenomena involved in heterogeneous catalysis. Despite extensive studies, very little is known about the nature of hot electrons generated at solid–liquid interfaces. Herein, we report remarkable results showing the detection of hot electrons as a chemicurrent generated at the solid–liquid interface during decomposition of hydrogen peroxide (H2 O2 ) catalyzed on Schottky nanodiodes. The chemicurrent reflects the activity of the catalytic reaction and the state of the catalyst in real time. We show that the chemicurrent yield can reach values up to 10 −1 electrons/O2 molecule, which is notably higher than that for solid–gas reactions on similar nanodiodes. Abstract : Some like it hot : The detection of hot electrons as a chemicurrent generated at the solid–liquid interface during catalytic decomposition of hydrogen peroxide is possible using metal/n‐Si Schottky nanodiodes. The dependence of the detected current on the metal‐film thickness confirms the chemical nature of the hot electrons.