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Electrochemical STM observation of new structures of CO adsorbed on a Pt(111) electrode surface
Jung, Changhoon,Ku, Bonseong,Kim, Jandee,Rhee, Choong Kyun Royal Society of Chemistry 2006 Chemical communications Vol.2006 No.20
<P>Presented are two newly observed adstructures of adsorbed CO onto Pt(111), (2 × 2)-3CO-β and (2 × 2)-4CO, observed during the structural evolution from the well-known (2 × 2)-3CO-α structure to the (√19 × √19)-13CO structure.</P> <P>Graphic Abstract</P><P>Two newly observed adstructures of CO on a Pt(111) surface. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b603033e'> </P>
Co-adsorption of Irreversibly Adsorbing Sb and Te on Pt(111)
이충균,김태곤,정창훈,Jisheng Zhao,Bonseong Ku 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.5
Presented is a voltammetric study of co-adsorption of irreversibly adsorbing Sb and Te on Pt(111). When a layer of Sb and Te was formed via simultaneous adsorption, the reduction peak of Te was observed at 0.30 V in the initial cathodic scan. In contrast, sequential adsorption of Sb followed by Te adsorption led to a Te reduction peak at 0.50 V in the initial scan. As the voltammetric scan was continued, in addition, the voltammogram of the simultaneously co-adsorbed layer changed, while that of the sequentially co-adsorbed layer did not. These observations are discussed in terms of formation of a homogeneously mixed layer and a layer consisting of heterogeneously separated domains of Sb and Te. Also, the difference in the adsorption strength of Sb and Te was observed.