Water Oxidation Catalysis by Nanoparticulate Manganese Oxide Thin Films: Probing the Effect of the Manganese Precursors

2013 ◽  
Vol 25 (7) ◽  
pp. 1098-1108 ◽  
Author(s):  
Archana Singh ◽  
Rosalie K. Hocking ◽  
Shery L.-Y. Chang ◽  
Benjamin M. George ◽  
Matthias Fehr ◽  
...  
Keyword(s):  
Thin Films ◽  
Manganese Oxide ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxide Thin Films ◽  
Water Oxidation Catalysis

scholarly journals Systematic Doping of Cobalt into Layered Manganese Oxide Sheets Substantially Enhances Water Oxidation Catalysis

2018 ◽  
Vol 57 (2) ◽  
pp. 557-564 ◽  
Author(s):  
Ian G. McKendry ◽  
Akila C. Thenuwara ◽  
Samantha L. Shumlas ◽  
Haowei Peng ◽  
Yaroslav V. Aulin ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Water Oxidation Catalysis ◽  
Layered Manganese Oxide

scholarly journals Decoration of the layered manganese oxide birnessite with Mn(ii/iii) gives a new water oxidation catalyst with fifty-fold turnover number enhancement

2015 ◽  
Vol 44 (29) ◽  
pp. 12981-12984 ◽  
Author(s):  
Ian G. McKendry ◽  
Sandeep K. Kondaveeti ◽  
Samantha L. Shumlas ◽  
Daniel R. Strongin ◽  
Michael J. Zdilla
Keyword(s):  
Manganese Oxide ◽  
Oxidation State ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Turnover Number ◽  
Average Oxidation State ◽  
Water Oxidation Catalysis ◽  
Layered Manganese Oxide

The role of the manganese average oxidation state (AOS) in water oxidation catalysis by birnessite was investigated.

scholarly journals Studies of poly(3,4-ethylenedioxythiophene) (PEDOT) films containing cationic Mn porphyrins. A loading-dependent demetalation of Mn(III)TPP in PEDOT (Mn(III)TPP=5,10,15,20-tetraphenylporphyrinato manganese(III))

2016 ◽  
Vol 20 (12) ◽  
pp. 1463-1476 ◽  
Author(s):  
Danijel Boskovic ◽  
Sivakumar Balakrishnan ◽  
Jun Chen ◽  
Pawel Wagner ◽  
Gerhard F. Swiegers
Keyword(s):  
Thin Films ◽  
Vapor Phase ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Light Illumination ◽  
Water Oxidation Catalysis ◽  
Mn Porphyrins

Thin films of vapor-phase polymerized PEDOT incorporating various cationic Mn porphyrins were assessed for water oxidation catalysis under light illumination. Only Mn(III)TPP/PEDOT displayed a notable photocurrent and this was, counter-intuitively, greatest at the lowest loading levels examined. Studies revealed that a proportion of the Mn(III)TPP within the PEDOT became demetalated during polymerization, leaving free and protonated TPP. Despite the presence of an excess of chemical oxidant during the polymerization step, the Mn(III) ion was reduced — likely under the influence of light — to Mn(II), which was labilized out of the film. Whereas PEDOT films loaded with anionic Mn porphyrins may be active and selective water oxidation photocatalysts, their analogs containing cationic Mn porphyrins, like Mn(III)TPP, are catalytically inert.

Sign in / Sign up

Export Citation Format

Share Document