Nanolayered manganese oxide/C60composite: a good water-oxidizing catalyst for artificial photosynthetic systems

2014 ◽  
Vol 43 (31) ◽  
pp. 12058-12064 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Mahnaz Abasi ◽  
Tatsuya Tomo ◽  
Suleyman I. Allakhverdiev
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Mn Oxide ◽  
Artificial Photosynthetic

We report that nanolayered Mn oxide/C60composites show promising activity toward water oxidation.

Gold nanorods or nanoparticles deposited on layered manganese oxide: new findings

2015 ◽  
Vol 39 (9) ◽  
pp. 7260-7267 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Seyedeh Maedeh Hosseini ◽  
Małgorzata Hołyńska ◽  
Tatsuya Tomo ◽  
Suleyman I. Allakhverdiev
Keyword(s):  
Manganese Oxide ◽  
Gold Nanorods ◽  
Water Oxidation ◽  
Oxide Phase ◽  
Oxidation Activity ◽  
Mn Oxide ◽  
New Findings ◽  
Layered Manganese Oxide

Our results show that nano-sized gold has no significant effect on the water-oxidation activity of the Mn oxide phase in the presence of Ce(iv).

Nanosized manganese oxide/holmium oxide: a new composite for water oxidation

2017 ◽  
Vol 41 (22) ◽  
pp. 13732-13741 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Saeideh Salimi ◽  
Zahra Zand ◽  
Małgorzata Hołyńska ◽  
Tatsuya Tomo ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Mn Oxide

Ho2O3 as a support for nanosized Mn oxide was used for the synthesis of a new water-oxidizing catalyst.

Manganese oxide supported on gold/iron as a water-oxidizing catalyst in artificial photosynthetic systems

2016 ◽  
Vol 45 (22) ◽  
pp. 9201-9208 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Seyedeh Maedeh Hosseini ◽  
Zahra Zand
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Environmentally Friendly ◽  
Magnetically Separable ◽  
Artificial Photosynthetic

Herein, a new conductive, recyclable, highly dispersible, magnetically separable, environmentally friendly, and nano-sized catalyst for water oxidation is reported.

Mechanism of water oxidation by nanolayered manganese oxide: a step forward

RSC Advances ◽  
2014 ◽  
Vol 4 (13) ◽  
pp. 6375-6378 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Mohsen Abbasi Isaloo
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Mn Oxide

New insights into the mechanism of water oxidation by layered Mn oxide are reported.

Mn oxide/nanodiamond composite: a new water-oxidizing catalyst for water oxidation

RSC Advances ◽  
2014 ◽  
Vol 4 (71) ◽  
pp. 37613-37619 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Mahnaz Abasi ◽  
Tatsuya Tomo ◽  
Suleyman I. Allakhverdiev
Keyword(s):  
Water Oxidation ◽  
Mn Oxide

Herein, we reported nanosized Mn oxide/nanodiamond composites as water-oxidizing compounds.

Nano-sized Mn oxide: A true catalyst in the water-oxidation reaction

2015 ◽  
Vol 152 ◽  
pp. 127-132 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Suleyman I. Allakhverdiev
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Mn Oxide

scholarly journals Flow Cell for Operando X-Ray Photon-in-Photon-out Studies on Photo-Electrochemical Thin Film Devices

2020 ◽  
Author(s):  
Philipp Jäker ◽  
Dino Aegerter ◽  
Till Kyburz ◽  
Roman Staedler ◽  
Rea Fonjallaz ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Oxidation ◽  
High Energy ◽  
Operating Conditions ◽  
High Energy Resolution ◽  
X Ray ◽  
Long Term Stability ◽  
Operando Xas ◽  
Artificial Photosynthetic ◽  
Thin Film Devices

Photo-electro-chemical (PEC) water splitting represents a promising technology towards an artificial photosynthetic device but many fundamental electronic processes, which govern long-term stability and energetics are not well understood. X-ray absorption spectroscopy (XAS), particularly its high energy resolution fluorescence-detected (HERFD) mode, emerges as a powerful tool to study photo-excited charge carrier behavior under operating conditions. The established thin film device architecture of PEC cells provides a well-defined measurement geometry, but it puts many constraints on conducting operando XAS experiments. So far, operando cells have not been developed that enable to concurrently measure highly intense X-ray fluorescence and photo-electro-chemical current without experimental artifacts caused by O<sub>2</sub> and H<sub>2</sub> bubbles formation. Moreover, we are missing a standardized thin film exchange procedure. Here, we address and overcome the instrumental limitations for operando HERFD-XAS to investigate photo- and electrochemical thin film devices. Our cell establishes a measurement routine that will provide experimental access to a broader scientific community, particularly due to the ease of sample exchange. Our operando photo-electro-chemical cell is optimized for the HERFD-XAS geometry and we demonstrate its operation by collecting high-resolution Fe K-edge spectra of hematite (α-Fe<sub>2</sub>O<sub>3</sub>) and ferrite thin film (MFe<sub>2</sub>O<sub>4</sub>, M= Zn, Ni) photoelectrodes during water oxidation.<br>

scholarly journals Microstructural Transformations of La 0.6 Sr 0.4 MnO 3 to nNano-layered Mn Oxide during Electrochemical Water Oxidation

2016 ◽  
Vol 22 (S3) ◽  
pp. 1276-1277
Author(s):  
Bahareh Deljoo ◽  
Alireza Shirazi Amin ◽  
S. Esmael Balaghi ◽  
Younes Mousazadeh ◽  
Tahereh Jafari ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Mn Oxide

scholarly journals Identifying MnVII-oxo Species during Electrochemical Water Oxidation by Manganese Oxide

iScience ◽  
2018 ◽  
Vol 4 ◽  
pp. 144-152 ◽  
Author(s):  
Biaobiao Zhang ◽  
Quentin Daniel ◽  
Lizhou Fan ◽  
Tianqi Liu ◽  
Qijun Meng ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation

Surprisingly Low Reactivity of Layered Manganese Oxide toward Water Oxidation in Fe/Ni-Free Electrolyte under Alkaline Conditions

2022 ◽  
Author(s):  
Mahya Salmanion ◽  
Ivan Kondov ◽  
Matthias Vandichel ◽  
Pavlo Aleshkevych ◽  
Mohammad Mahdi Najafpour
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Alkaline Conditions ◽  
Layered Manganese Oxide
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