Effective conversion of CO2 to carbonate in surface oxidation processes at Si(100)
Article Abstract:
Temperature-progammed desorption and x-ray photoelectron spectroscopy are used in studying the reactions of CO2 with N2O or O2 at Si(100) surface. It has been observed that carbonate forms on the clean Si(100) surface between CO2 and the oxidants N2O and O2. The carbonate is composed of the CO2 adsorbate and an oxygen atom from the surface oxidant. Carbon dioxide physisorbed on Si(100) desorbs exclusively near 75 degrees K. However CO2 is converted into carbonate between 200 to 600 K when it is coadsorbed with N2O or O2.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Mechanism of CO oxidation on Pt(111) in alkaline media
Article Abstract:
The mechanism of CO oxidation and the role of surface structure in promoting CO oxidation on well-ordered and disordered Pt(111) in aqueous NaOH solutions were examined by using electrochemical techniques, coupled with in situ scanning tunneling microscopy. The enhanced oxidation of CO in alkaline media is attributed to the higher affinity of the Pt(111) surface for adsorption of OH at low potentials in alkaline media as compared with acidic media.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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In situ observation of CO oxidation on Ag(110)(2X1)-O by scanning tunneling microscopy: Structural fluctuation and catalytic activity
Article Abstract:
The structural changes in AgO chains and the effect of the structural fluctuation on the clean-off reaction on Ag(110)(2X1)-O by using variable temperature scanning tunneling microscopy (VT-STM). The results revealed that the reaction kinetics are significantly affected by the structural transition of AgO chains from a solid straight-line configuration to dynamically fluctuating configurations.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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