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

作者：Najafpour Mohammad Mahdi; Salimi Saeideh; Madadkhani Sepideh; Holynska Malgorzata; Tomo Tatsuya; Allakhverdiev Suleyman I

来源：Photosynthesis Research, 2016, 130(1-3): 225-235.

DOI：10.1007/s11120-016-0247-9

• Artificial photosynthesis
• Nano-sized manganese oxide
• Oxygen
• Self-healing
• Silica aerogel
• Water oxidation

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 similar to 0.3 and 0.5 (mmol O-2/(mol Mn center dot 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.

• 出版日期2016-12