Selective saturation of step-edges as a tool to control the growth of molecular fibres

The formation of molecular fibres is often hampered by defects such as step edges, which act as nucleation sites. Here, we present a concept of how exposure of the support to oxygen or even air disables the formation of such defect-driven fibres.

Inhibition of Hydrogen Evolution without Debilitating Electrochemical CO2 Reduction via the Local Suppression of Proton Concentration and Blocking of Step-edges by Pyridine Functionalization on Cu Electrocatalysts

Electrochemical carbon dioxide reduction reaction (CO2RR) to chemicals can store renewable electricity and simultaneously control global warming. Albeit inexpensive copper electro-catalyzing CO2 to hydrocarbons at reasonable rates, it suffers from...

STRUCTURAL CHANGES ON SI(111) SURFACE DURING SN ADSORPTION AT CONDITIONS OF ELEVATED TEMPERATURES AND ELECTROMIGRATION

For the first time structural changes on Si(111) surface have been visualized directly during Sn deposition at Т=200–800°С. Si atoms detached from step edges were founded to participate in (√3×√3) structure formation at T>650°С. Electromigration influence on terraces filling of Si(111)-(√3×√3) surface by “1×1”-Sn phase was shown. Sn atoms on Si(111)- (√3×√3) surface have positive effective charge.