The variation of the defect number that results from the interaction of ZnO with air-reducing gas mixtures (H-2-air and CO-air) has been investigated by EPR spectroscopy. It appears that up to 573 K the surface interaction with CO or H-2 and air is dominated by the reaction of CO or H-2 with the chemisorbed oxygen species (O2- and O-); at higher temperature the main process is the formation of new oxygen vacancies. The CO effect is stronger than that of H-2 up to 573 K; after this temperature the relative importance reverses and H-2 is more efficient than CO in producing new oxygen vacancies.
MORAZZONI, F., SCOTTI, R., DINOLA, P., MILANI, C., & NARDUCCI, D. (1992). ELECTRON-PARAMAGNETIC RESONANCE STUDY OF THE INTERACTION OF THE ZNO SURFACE WITH AIR AND AIR REDUCING GAS-MIXTURES. JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS, 88(12), 1691-1694 [10.1039/ft9928801691].
Citazione: | MORAZZONI, F., SCOTTI, R., DINOLA, P., MILANI, C., & NARDUCCI, D. (1992). ELECTRON-PARAMAGNETIC RESONANCE STUDY OF THE INTERACTION OF THE ZNO SURFACE WITH AIR AND AIR REDUCING GAS-MIXTURES. JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS, 88(12), 1691-1694 [10.1039/ft9928801691]. | |
Tipo: | Articolo in rivista - Articolo scientifico | |
Carattere della pubblicazione: | Scientifica | |
Titolo: | ELECTRON-PARAMAGNETIC RESONANCE STUDY OF THE INTERACTION OF THE ZNO SURFACE WITH AIR AND AIR REDUCING GAS-MIXTURES | |
Autori: | MORAZZONI, F; SCOTTI, R; DINOLA, P; MILANI, C; NARDUCCI, D | |
Autori: | ||
Data di pubblicazione: | 1992 | |
Lingua: | English | |
Rivista: | JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1039/ft9928801691 | |
Appare nelle tipologie: | 01 - Articolo su rivista |