Abstract
Properties of the chemical waves emerging from the mask edge were investigated for the Ru(bpy) 3 2+-catalyzed Belousov–Zhabotinsky reaction under steady illumination while varying the initial concentration of malonic acid ([MA] 0) systematically. The wave velocity, the wavelength and the thickness of the oxidized band were found to decrease monotonously with [MA] 0. The obtained results were qualitatively interpreted based on the temporal oscillations measured in a batch reactor. A key effect caused by increasing [MA] 0 was identified to be the enhancement of the reduction rate of Ru(bpy) 3 3+.
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