Autors: Stefanov, B. I., Blagoev, B.S., Österlund, L., Tzaneva, B. R., Angelov, G. V.
Title: Effects of Anodic Aluminum Oxide Substrate Pore Geometry on the Gas-Phase Photocatalytic Activity of ZnO/Al2O3 Composites Prepared by Atomic Layer Deposition
Keywords: photocatalysis; anodic aluminum oxide; zinc oxide; acetaldeh

Abstract: We report on the photocatalytic activity of ZnO layers deposited by atomic layer deposition on a porous anodic aluminum oxide substrate with hexagonal pore symmetry and varied pore dimensions. ZnO/Al2O3 composites were prepared with pore diameters in the range 93–134 nm and interpore distance in the range 185–286 nm, and their photocatalytic activity was measured for gas-phase photocatalytic oxidation of acetaldehyde at varying UV illumination intensities (0.08–3.94 mW cm−2). The results show that substrates with narrower pore diameters (<115 nm, in the case of this study) have a detrimental effect on the photocatalyst performance, despite their higher effective surface. The results are explained on the basis of limited mass transfer inside the porous structure and can be used as a guideline in the purposeful design of photocatalysts with a nanoporous or nanotubular structure.



    Symmetry, vol. 13, issue 8, pp. 1456, 2021, Switzerland, Multidisciplinary Digital Publishing Institute,

    Цитирания (Citation/s):
    1. Qi, Y., Gu, J., Shi, G., Li, X., Wang, A., Yang, S. Symmetrically Controlled Design of Twin Alumina-Co Composite Thin Films (2022) Coatings, 12(2), pp. 223. - 2022 - в издания, индексирани в Scopus или Web of Science
    2. Lim, S.Y., Hedrich, C., Law, C.S., Abell, A.D., Blick, R.H., Furlan, K.P., Zierold, R., Santos, A. Nanoporous Anodic Alumina Photonic Crystals for Sunlight Harvesting Applications: A Perspective (2022) Solar RRL, 6 (10), art. no. 2200480. - 2022 - в издания, индексирани в Scopus или Web of Science
    3. Cao, N., Xi, M., Li, X., Zheng, J., Qian, L., Dai, Y., Song, X., Hu, S. Recent Developments in Heterogeneous Photocatalysts with Near-Infrared Response (2022) Symmetry, 14 (10), art. no. 2107. - 2022 - в издания, индексирани в Scopus или Web of Science
    4. Karajz, D.A., Szilágyi, I.M. Review of photocatalytic ZnO nanomaterials made by atomic layer deposition (2023) Surfaces and Interfaces, 40, art. no. 103094. - 2023 - в издания, индексирани в Scopus или Web of Science
    5. Hedrich, C., Burson, A.R., González-García, S., Vega, V., Prida, V.M., Santos, A., Blick, R.H., Zierold, R. Enhancing the Photocatalytic Activity by Tailoring an Anodic Aluminum Oxide Photonic Crystal to the Semiconductor Catalyst: At the Example of Iron Oxide (2023) Advanced Materials Interfaces, art. no. 2300615. - 2023 - в издания, индексирани в Scopus или Web of Science

    Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science