TY - JOUR
T1 - Nanostructured manganese oxide on frozen smoke
T2 - A new water-oxidizing composite
AU - Najafpour, M. M.
AU - Salimi, S.
AU - Balaghi, S. Esmael
AU - Hołyńska, M.
AU - Tomo, T.
AU - Sadr, Moayad Hossaini
AU - Soltani, Behzad
AU - Shen, J. R.
AU - Veziroglu, T. N.
AU - Allakhverdiev, Suleyman
N1 - Funding Information:
MMN and SS are grateful to the Institute for Advanced Studies in Basic Sciences. TT and JRS was supported by Grant-in-Aids for Scientific Research from the Ministry of Education of Japan (Grant No: 26220801 ), and by a grant-in-aid for Specially Promoted Research (No. 24000018 ) from JSPS, MEXT, Japan, respectively. This work was also supported by the Russian Science Foundation (Grant No: 14-14-00039 to SIA). SEB, BS and MHS are grateful for the financial support from Azarbaijan Shahid Madani University . The authors thank Maryam Fathollahzadeh for measuring resistance for A21.
Publisher Copyright:
© 2015 Hydrogen Energy Publications, LLC.
PY - 2016/1/30
Y1 - 2016/1/30
N2 - The water-oxidizing complex or oxygen-evolving complex in plants, algae and cyanobacteria is an Mn4CaO5 cluster catalysing light-induced water oxidation. Herein we report that nano-sized Mn oxide/carbon aerogel is an active and low-density catalyst toward water oxidation. The composite was synthesized by a simple, low-cost procedure with different ratio of carbon aerogel to Mn oxide and characterized by scanning electron microscopy, energy-dispersive spectroscopy, high resolution transmission electron microscopy, X-ray diffraction, electronic spectroscopy, Fourier transform infrared spectroscopy, and atomic absorption spectroscopy. Then, the water-oxidizing activity of this composite was considered in the presence of cerium(IV) ammonium nitrate. The composites with a high ratio of Mn oxide to carbon aerogel are good Mn-based catalysts with turnover frequencies of ∼0.33 (mmol O2/(mol Mn·s)). In addition to the water-oxidizing activities of these composites under different conditions, their self-healing reaction in the presence of cerium(IV) ammonium nitrate was studied. We also compare the composite with graphene quantum dots/Mn oxide, which is not stable under these conditions. Using hydrogen to store sustainable energies is a promising strategy in the near future and our results show that nano-sized Mn oxide/carbon aerogel is a promising catalyst for water-splitting systems toward hydrogen evolution.
AB - The water-oxidizing complex or oxygen-evolving complex in plants, algae and cyanobacteria is an Mn4CaO5 cluster catalysing light-induced water oxidation. Herein we report that nano-sized Mn oxide/carbon aerogel is an active and low-density catalyst toward water oxidation. The composite was synthesized by a simple, low-cost procedure with different ratio of carbon aerogel to Mn oxide and characterized by scanning electron microscopy, energy-dispersive spectroscopy, high resolution transmission electron microscopy, X-ray diffraction, electronic spectroscopy, Fourier transform infrared spectroscopy, and atomic absorption spectroscopy. Then, the water-oxidizing activity of this composite was considered in the presence of cerium(IV) ammonium nitrate. The composites with a high ratio of Mn oxide to carbon aerogel are good Mn-based catalysts with turnover frequencies of ∼0.33 (mmol O2/(mol Mn·s)). In addition to the water-oxidizing activities of these composites under different conditions, their self-healing reaction in the presence of cerium(IV) ammonium nitrate was studied. We also compare the composite with graphene quantum dots/Mn oxide, which is not stable under these conditions. Using hydrogen to store sustainable energies is a promising strategy in the near future and our results show that nano-sized Mn oxide/carbon aerogel is a promising catalyst for water-splitting systems toward hydrogen evolution.
KW - Artificial photosynthesis
KW - Carbon aerogel
KW - Manganese oxide
KW - Nanotechnology
KW - Oxygen
KW - Self-healing
KW - Water oxidation
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U2 - 10.1016/j.ijhydene.2015.11.003
DO - 10.1016/j.ijhydene.2015.11.003
M3 - Article
AN - SCOPUS:84957855142
SN - 0360-3199
VL - 41
SP - 2466
EP - 2476
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 4
ER -
