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Selected applications of operando Raman spectroscopy in electrocatalysis research
被引:14
作者:
Liu, Si
[1
]
D'Amario, Luca
[1
,2
]
Jiang, Shan
[1
]
Dau, Holger
[1
]
机构:
[1] Free Univ Berlin, Dept Phys, Arnimallee 14, D-14195 Berlin, Germany
[2] Angstrom Lab, Dept Chem, Lagerhyddsvagen 1, S-75120 Uppsala, Sweden
基金:
瑞典研究理事会;
关键词:
Electrocatalytic reactions;
In-situ spectroscopy;
Material dynamics;
Electrolyte interface;
Surface-enhanced Raman spectroscopy (SERS);
Oxygen evolution reaction (OER);
CO2 reduction reaction (CO2RR);
Local pH;
CO2;
REDUCTION;
HYDROGEN EVOLUTION;
SURFACE;
ELECTRODES;
SCATTERING;
DEPENDENCE;
CATALYSTS;
OXIDE;
D O I:
10.1016/j.coelec.2022.101042
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Knowledge-guided improvement of electrocatalytic materials is facilitated by insight in determinants of activity, selectivity, and stability. Catalyst re-construction, surface adsorbates and reaction intermediates, and the mechanistic role of the electrolyte can be addressed by operando (= in situ) Raman spectroscopy, where Raman scattering is detected during electrochemical operation. After outlining the basic experimental technology and addressing the light-damage problem, selected applications in electrocatalysis research are reviewed: (1) Redox-state changes of the catalyst material induced by electrode potentials are traced by operando Raman spectroscopy. (2) Surface-bound (adsorbed) educt, products and reaction intermediates are detected using surface-enhanced Raman spectroscopy (SERS). (3) Local-pH values are determined at the catalyst-electrolyte interface, with spatial resolution at the visible-light diffraction limit.
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页数:10
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