Abstract

TEWARI, Brij B. et al. Critical reviews on stability and photosensitizer potential of metal ferrocyanides: a possible prebiotic mineral part- III. Rev. Bol. Quim [online]. 2019, vol.36, n.1, pp.19-39. ISSN 0250-5460.

Abstract Copper, lanthanum, mercury, molybdenum, silver, titanium, and zinc ferrocyanides were synthesized and characterized by elemental analysis and spectral studies. The stability of synthesized metal ferrocyanides were recorded in heat (various temperature), various concentrations of acids (HC1, H₂SO₄, HNO3, CH₃ COOH) various concentrations of bases (NaOH, KOH, NH₄OH), and in sea and tap water. All stabilities were recorded at room and boiling temperature. Stability of synthesized metal ferrocyanides were also recorded in presence of visible and ultraviolet radiation. Oxidizing and photosensitizing potential of synthesized metal ferrocyanides were tested using potassium iodide and freshly prepared starch solution indicated copper ferrocyanide as possible strong oxidizer and photosensitizer. Molybdenum, mercury and tungsten ferrocyanides were found to act as weak oxidizer and photosensitizer. Lanthanum and zinc ferrocyanide did not show any oxidizing and photosensitizing potential.

Keywords : Metal ferrocyanides; Stability; Oxidizer; Photosensitizer; Prebiotic mineral.

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