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- W3153059362 abstract "In this work, we studied the effect of doping with d metals (Me: Mn, Fe, Cu) on the photocatalytic activity and optical properties of the hetero-structured, bismuth-containing Sr 1-x Me x Bi 4 O 7 / (BiO) 2 CO 3 photo-catalyst, where x = 0.01–0.05. The stages of oxidative pyrolysis of precursor organometallic complexes with sorbitol by differential scanning calorimetry have been studied. The first stage of oxidative destruction is induced by the influence of nitrate-ion and terminates at temperatures below . The second stage of pyrolysis is associated with a further thermal degradation of sorbitol to pyrolytic carbon in the temperature range 113 - . The third stage 287–462°C is associated with the combustion of the formed pyrolytic carbon. The final stage of pyrolysis occurs in the temperature range of 462-with the formation of the target synthesis products. It has been established that Cu is the most effective dopant. In contrast to other metals, doping with copper results in the formation of a solid solution in the CuO-SrBi 4 O 7 system. Compared to the initial SrBi 4 O 7 , as a result of doping Cu in an amount of 5 at. % the largest change in the band gap from 2.77 to 2.62 eV is achieved. The efficiency of photo-catalysis (estimated by the half-conversion of methylene blue) of the Cu 0.05 Sr0. 95 Bi 4 O 7 / (BiO) 2 CO 3 composition turned out to be 2.3 times higher than the initial - undoped catalyst; and 3.1 times higher than in the non-catalytic process." @default.
- W3153059362 created "2021-04-26" @default.
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- W3153059362 date "2021-04-01" @default.
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- W3153059362 title "Synthesis and Study of the Properties of Photocatalytic Compositions Based on Sro/Bi<sub>2</sub>O<sub>3</sub> and (Bio)<sub>2</sub>CO<sub>3</sub> Solid Solutions with Modifying Additives of Transition Metals Cu, Mn, Fe" @default.
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- W3153059362 doi "https://doi.org/10.4028/www.scientific.net/ssp.316.981" @default.
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