Влияние аниона аммиачного комплекса серебра на активность сформированных in situ Ag/TiO2-катализаторов

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Abstract

В данной работе изучено влияние исходных комплексов серебра на активность полученных фотокатализаторов Ag/TiO2 в процессе газофазного фотоокисления ацетона. Физико-химические свойства катализаторов были исследованы методами РФЭС, РФА и РЭМ. Методом РФЭС показано, что серебро находится в металлическом состоянии. Наибольшей активностью в реакции фотокаталитического окисления ацетона обладал катализатор, полученный в присутствии фторид аниона. Увеличение количества серебра в катализаторе с 0.1 до 0.5 ат.% приводит к снижению активности, что обусловлено поглощением света наночастицами серебра на поверхности фотокатализатора.

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About the authors

Алексей Александрович Садовников

Институт нефтехимического синтеза имени А. В. Топчиева РАН; Институт общей и неорганической химии имени Н. С. Курнакова РАН

Email: naranov@ips.ac.ru
ORCID iD: 0000-0002-3574-0039
Russian Federation, 119991, Москва; 119991, Москва

Кристина Николаевна Новоселова

Национальный исследовательский университет “Высшая школа экономики”

Email: naranov@ips.ac.ru
ORCID iD: 0009-0006-4139-1476
Russian Federation, 101000, Москва

Владислав Витальевич Судьин

ООО “Завод Аэролайф”

Email: naranov@ips.ac.ru
ORCID iD: 0000-0001-9091-855X

к. ф.- м. н.

Russian Federation, 119048, Москва

Евгений Русланович Наранов

Институт нефтехимического синтеза имени А. В. Топчиева РАН

Author for correspondence.
Email: naranov@ips.ac.ru
ORCID iD: 0000-0002-3815-9565

к. х. н.

Russian Federation, 119991, Москва

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Supplementary files

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2. Fig. 1. Schematic diagram of the stand for measuring photocatalytic activity: 1 - FTIR spectrometer, 2 - gas cuvette, 3 - photoreactor, 4 - photocatalyst, 5 - UV LED, 6 - fan, 7 - lithium chloride solution, 8 - NaOHconz solution, 9 - carbon filter, 10 - pump, 11 - air inlet.

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3. Fig. 2. Dependence of formed CO2 concentration (a) and photocatalytic oxidation efficiency (b) on the used catalyst and irradiation conditions.

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4. Fig. 3. X-ray diffraction patterns of the obtained in situ Ag/TiO2 catalysts in the photooxidation reaction of acetone in the presence of different silver ammonia complexes and the comparison sample Hombikat UV100.

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5. Fig. 4. Absorption spectrum and rearranged spectra in Tautz coordinates of in situ Ag/TiO2 obtained and Hombikat UV100 comparison sample.

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6. Fig. 5. RFES spectra of (a) - Ti2p, (b) - O1s, (c) - Ag3d, of the in situ obtained Ag/TiO2/F catalyst in the reaction of photocatalytic oxidation of acetone.

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7. Fig. 6. SEM micrographs of an in situ formed Ag/TiO2/F catalyst in the presence of quinoline in the photocatalytic oxidation of acetone.

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