Abstract
Herein we report a new strategy to disperse Mn oxide into the apoenzyme of photosystem II. The compound was characterized by scanning electron microscopy, transmission electron microscopy, UV-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray absorption near edge structure, extended X-ray absorption fine structure, X-ray diffraction and some electrochemical methods. Under electrochemical conditions, the peaks attributed to Mn(ii)/(iii), Mn(iii)/(iv) and Mn(ii)/(iv) were assigned and compared with other manganese oxides. Linear sweep voltammetry shows that water electro-oxidation occurs at 80 mV less than that for the apoenzyme of photosystem II. Thus, Mn oxide maintains its water-oxidizing activity under these conditions. The compound is a new type of structural and functional model for the water-oxidizing complex in photosystem II.
| Original language | English |
|---|---|
| Pages (from-to) | 4451-4461 |
| Number of pages | 11 |
| Journal | Catalysis Science and Technology |
| Volume | 7 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - Jan 1 2017 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Catalysis
Cite this
A new strategy to make an artificial enzyme : Photosystem II around nanosized manganese oxide. / Najafpour, Mohammad Mahdi; Madadkhani, Sepideh; Akbarian, Somayyeh; Hołyńska, Małgorzata; Kompany-Zareh, Mohsen; Tomo, Tatsuya; Singh, Jitendra Pal; Chae, Keun Hwa; Allakhverdiev, Suleyman.
In: Catalysis Science and Technology, Vol. 7, No. 19, 01.01.2017, p. 4451-4461.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new strategy to make an artificial enzyme
T2 - Photosystem II around nanosized manganese oxide
AU - Najafpour, Mohammad Mahdi
AU - Madadkhani, Sepideh
AU - Akbarian, Somayyeh
AU - Hołyńska, Małgorzata
AU - Kompany-Zareh, Mohsen
AU - Tomo, Tatsuya
AU - Singh, Jitendra Pal
AU - Chae, Keun Hwa
AU - Allakhverdiev, Suleyman
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Herein we report a new strategy to disperse Mn oxide into the apoenzyme of photosystem II. The compound was characterized by scanning electron microscopy, transmission electron microscopy, UV-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray absorption near edge structure, extended X-ray absorption fine structure, X-ray diffraction and some electrochemical methods. Under electrochemical conditions, the peaks attributed to Mn(ii)/(iii), Mn(iii)/(iv) and Mn(ii)/(iv) were assigned and compared with other manganese oxides. Linear sweep voltammetry shows that water electro-oxidation occurs at 80 mV less than that for the apoenzyme of photosystem II. Thus, Mn oxide maintains its water-oxidizing activity under these conditions. The compound is a new type of structural and functional model for the water-oxidizing complex in photosystem II.
AB - Herein we report a new strategy to disperse Mn oxide into the apoenzyme of photosystem II. The compound was characterized by scanning electron microscopy, transmission electron microscopy, UV-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray absorption near edge structure, extended X-ray absorption fine structure, X-ray diffraction and some electrochemical methods. Under electrochemical conditions, the peaks attributed to Mn(ii)/(iii), Mn(iii)/(iv) and Mn(ii)/(iv) were assigned and compared with other manganese oxides. Linear sweep voltammetry shows that water electro-oxidation occurs at 80 mV less than that for the apoenzyme of photosystem II. Thus, Mn oxide maintains its water-oxidizing activity under these conditions. The compound is a new type of structural and functional model for the water-oxidizing complex in photosystem II.
UR - http://www.scopus.com/inward/record.url?scp=85030661117&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85030661117&partnerID=8YFLogxK
U2 - 10.1039/c7cy01654a
DO - 10.1039/c7cy01654a
M3 - Article
AN - SCOPUS:85030661117
VL - 7
SP - 4451
EP - 4461
JO - Catalysis Science and Technology
JF - Catalysis Science and Technology
SN - 2044-4753
IS - 19
ER -