ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Oxygen is generated when aqueous solution of iron (III) tris(2,2′-bipyridyl), Fe(bipy)33+, are brought in contact with catalytic amounts of powdered or colloidal RuO2. The oxygen yield depends strongly on the pH, reaching a maximum between pH 7 and 8 where it corresponds to the stoichiometry of the reaction: The rate of the reaction is so fast that it occurs practically upon dissolution of Fe(bipy)33+ in the aqueous phase. In acidic media (pH 4), no O2 evolution is observed. Instead, Fe(bipy)33+ is converted to an intermediate which in the presence of RuO2 yields O2 upon neutralization.The pH profile of the O2 evolution occuring upon illumination of Ru(bipy)32+ in the presence of the cobalt complex [Co(NH3)5Cl]2+ was also investigated.The surprisingly low energy losses (160 mV) in reaction (1) makes the construction of four quanta water splitting systems feasible.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19790620738
