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The role of periodic structures in light harvesting / E. Bukhanov, A. V. Shabanov, M. N. Volochaev, S. A. Pyatina // Plants. - 2021. - Vol. 10, Is. 9. - Ст. 1967, DOI 10.3390/plants10091967. - Cited References: 34 . - ISSN 2223-7747
Кл.слова (ненормированные):
chloroplast -- thylakoid -- chlorophyll -- light harvesting -- density of photon states -- photosynthesis -- biophotonic crystal
Аннотация: The features of light propagation in plant leaves depend on the long-period ordering in chloroplasts and the spectral characteristics of pigments. This work demonstrates a method of determining the hidden ordered structure. Transmission spectra have been determined using transfer matrix method. A band gap was found in the visible spectral range. The effective refractive index and dispersion in the absorption spectrum area of chlorophyll were taken into account to show that the density of photon states increases, while the spectrum shifts towards the wavelength range of effective photosynthesis.

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Держатели документа:
Kirensky Institute of Physics FRC «KSC of SB RAS», Academgorodok str. 50/12, Krasnoyarsk, 660036, Russian Federation
Federal Research Center «KSC of SB RAS», Academgorodok str. 50, Krasnoyarsk, 660036, Russian Federation
Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi av., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Bukhanov, E. R.; Буханов, Евгений Романович; Shabanov, A. V.; Шабанов, Александр Васильевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Pyatina, S. A.
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    Semi-artificial photosynthetic system based on TiO2/Chlorophyll composite and microalgae for N2 fixation / X. Pan, W. Li, Yu. Fang [et al.] // Chem. Eng. J. - 2023. - Vol. 475. - Ст. 146179, DOI 10.1016/j.cej.2023.146179. - Cited References: 45. - The work was supported by the National Natural Science Foundations of China (No. 12274144), the Ministry of Science and Technology of China (No. G2021030022L), the Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams (No. 2022KJ122, 2023KJ122), the Key Realm R&D Program of Guangdong Province (No. 2021B0707010003), the Guangzhou Science & Technology Project (No. 202103000059), the Guangdong Provincial Science and Technology Project (No. 2021A0505050006), and the Project of GDUPS (2018) for Prof. Bingfu LEI . - ISSN 1385-8947. - ISSN 1873-3212
   Перевод заглавия: Полуискусственная фотосинтетическая система на основе композита TiO2/Хлорофилл и микроводорослей для фиксации N2
Кл.слова (ненормированные):
Microalgae -- Titanium -- Ubiquinone-0 -- Ammonia
Аннотация: Significant process has been made on the development of semi-artificial photosynthesis catering to the production of H2– and CO2– derived value-added products. But there are little reports on the application of semi-artificial photosynthetic system to nitrogen fixation areas. In this study we report the successful and highly efficient N2 fixation in one step at room temperature and ambient pressure by constructing new semi-artificial photosynthetic systems based on material-cell hybrids and microbial photo-electrolysis cells (MPECs). Improved TiO2/Chlorophyll composite that annealed at 400 °C was selected as electron donator to replenish additional electrons to Nostoc commune Vauch microalgae cell for N2 fixation. Ubiquinone-0 (2,3-dimethoxy-5-methyl-1,4-benzoquinone, Q0) was selected as electron relay that guarantees efficient transmission of electrons from abiotic material to microalgae cells. Determined by an ammonia assay kit, at constant concentration of microalgae, the constructed material-cell hybrid system photosynthetically synthesized 40.67 μM/h ammonia, while H-shape MPECs synthesized 132.70 μM/h, 19.23 times higher than that produced by pure microalgae. Using 15N2 as the reduction gas, the constructed H-shape MPECs photosynthetically synthesized 28.37 μM/h 15NH4+, 2.80 time higher than that of the MPECs without Q0 as electron relay.

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Держатели документа:
Key Laboratory for Biobased Materials and Energy of Ministry of Education, Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Scientific Center, Siberian Branch of Russian Academy of Science, Academgorodolk 50 bld.38, 660036, Russia
WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia 6102, Australia
Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528216, China

Доп.точки доступа:
Pan, Xiaoqin; Li, Wei; Fang, Yueping; Zhang, Haoran; Xiao, Yong; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ping Jiang, San; Liu, Yingliang; Lei, Bingfu
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