Annealing Induced Structural and Phase Transitions in Anodic Aluminum Oxide Prepared in Oxalic Acid Electrolyte | Sciact - CRIS-система Института катализа

Annealing Induced Structural and Phase Transitions in Anodic Aluminum Oxide Prepared in Oxalic Acid Electrolyte Научная публикация

Журнал

Surface and Coatings Technology
ISSN: 0257-8972 , E-ISSN: 1879-3347

Вых. Данные

Год: 2020, Том: 381, Номер статьи : 125159, Страниц : 10 DOI: 10.1016/j.surfcoat.2019.125159

Ключевые слова

Annealing; Anodic aluminum oxide; Kinetic analysis; Quantitative phase composition; Rietveld method; Specific surface area

Авторы

Roslyakov I.V. ¹ , Kolesnik I.V. ¹ , Levin E.E. ^1,2 , Katorova N.S. ³ , Pestrikov P.P. ¹ , Kardash T.Yu. ^4,5 , Solovyov L.A. ⁶ , Napolskii K.S. ¹

Организации

1	Lomonosov Moscow State University, Moscow, 119991, Russia
2	FSRC “Crystallography and Photonics” RAS, Moscow, 119333, Russia
3	Skolkovo Institute of Science and Technology, Moscow, 121205, Russia
4	Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia
5	Novosibirsk State University, Novosibirsk, 630090, Russia
6	Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, 660036, Russia

Информация о финансировании (3)

1	Федеральное агентство научных организаций России	v.45.3.3.
2	Российский фонд фундаментальных исследований	18-29-11097 (АААА-А18-118113090085-5)
3	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	ГЗ-2017-2020

Anodic aluminum oxide (AAO) films with uniform cylindrical pores are widely used as templates and membranes. The annealing of initially amorphous AAO enhances its chemical stability, but simultaneously changes its morphology and phase composition. Here we study the effect of annealing in the temperature range up to 1150 °C on structural and phase transitions in porous AAO films prepared by Al anodization in oxalic acid. Full-profile analysis of high-resolution X-ray diffraction patterns using the Rietveld method reveals the sequence of phase transformations (amorphous alumina → a mixture of γ-Al2O3 and θ-Al2O3 → a mixture of γ-Al2O3, δ-Al2O3, and θ-Al2O3 → α-Al2O3) and is used for quantitative phase analysis. Decomposition of oxalate-impurities, induced by the AAO crystallization, is studied using combined Fourier-transform infrared spectroscopy and thermogravimetry analysis. The removal of impurities results in the formation of mesopores in the AAO cell walls with a consequence increase in the specific surface area up to 80 m2·g− 1. The apparent activation energies of the removal of water (~35 kJ·mol− 1) and of the decomposition of carbon-containing impurities (~350 kJ·mol− 1) are calculated. Morphology-dependent kinetics of the impurities removal is described in the framework of the limited mass-transport of oxalate decomposition products through the cell walls. © 2019 Elsevier B.V.

Roslyakov I.V. , Kolesnik I.V. , Levin E.E. , Katorova N.S. , Pestrikov P.P. , Kardash T.Y. , Solovyov L.A. , Napolskii K.S.
Annealing Induced Structural and Phase Transitions in Anodic Aluminum Oxide Prepared in Oxalic Acid Electrolyte
Surface and Coatings Technology. 2020. V.381. 125159 :1-10. DOI: 10.1016/j.surfcoat.2019.125159 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	9 сент. 2019 г.
Принята к публикации:	11 нояб. 2019 г.
Опубликована online:	14 нояб. 2019 г.
Опубликована в печати:	15 янв. 2020 г.

Web of science:	WOS:000508497500017
Scopus:	2-s2.0-85075858100
РИНЦ:	43207709
Chemical Abstracts:	2019:2332867
OpenAlex:	W2988335549

БД	Цитирований
Scopus	38
Web of science	36
РИНЦ	43
OpenAlex	44