Apr 3, 2016

Nanostructured manganese oxide on silica aerogel: a new catalyst toward water oxidation

Photosynthesis Research
Mohammad Mahdi NajafpourSuleyman I Allakhverdiev

Abstract

Herein we report on the synthesis and characterization of nano-sized Mn oxide/silica aerogel with low density as a good catalyst toward water oxidation. The composite was synthesized by a simple and low-cost hydrothermal procedure. In the next step, we studied the composite in the presence of cerium(IV) ammonium nitrate and photo-produced Ru(bpy) 3(3+) as a water-oxidizing catalyst. The low-density composite is a good Mn-based catalyst with turnover frequencies of ~0.3 and 0.5 (mmol O2/(mol Mn·s)) in the presence of Ru(bpy) 3(3+) and cerium(IV) ammonium nitrate, respectively. In addition to the water-oxidizing activities of the composite under different conditions, its self-healing reaction in the presence of cerium(IV) ammonium nitrate was also studied.

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Mentioned in this Paper

Manganese
Size
Silochrome
Nanostructured Materials
Oxides
Oxidation
cerium(IV) ammonium nitrate
Manganese (AS OXIDE)
AN 3
Nitrates

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