A facile synthesis of cubic (Im3̄m) alumina films on glass with potential catalytic activity

Abstract

Thermally stable phase pure mesoporous cubic (Im3m) alumina films were synthesized on glass substrates under ambient conditions. These cubic alumina films incorporated with Au NPs exhibited excellent catalytic property.

Design of mesoporous alumina–ceria films on glass: Compositional tuning leads to mesoscopic transformations

“…2. We have reported that pure alumina film (AlCe 0 ) possesses Im 3m mesopores in presence of F127 [26]. The XRD pattern of AlCe 0 film heated at 400°C revealed three peaks with d-values 11.1, 7.99 and 4.8 nm corresponding to the (1 1 0), (2 0 0) and (2 2 2) reflections, respectively ( Fig.…”

“…The XRD pattern of AlCe 0 film heated at 400°C revealed three peaks with d-values 11.1, 7.99 and 4.8 nm corresponding to the (1 1 0), (2 0 0) and (2 2 2) reflections, respectively ( Fig. 2a) [26]. The AlCe 1 film in Fig.…”

“…We have reported the synthesis of pure alumina with cubic mesopores using a pre-synthesised partially chelated ASB-acac solution (ASB 0.5acac ) as alumina precursor in presence of F127 as soft-template [26]. The preparation of the alumina precursor has already been provided in the aforementioned work.…”

“…p 3: p 5:3 and can be assigned to the (1 1 0), (2 0 0), (2 2 2) and (3 3 0) diffraction peaks, respectively of bcc cubic mesostructure (Im 3m space group) [26]. The lattice parameters evaluated for AlCe 0 and AlCe 1 films are 15.7 and 17.1 nm, respectively.…”

“…As of today, only the synthesis of 2D hexagonal mesoporous alumina-ceria powder has been documented [19,22,23]. The basic advantages of films over powders, and the importance of cubic mesopores led to the current progress in the field of ordered mesoporous materials fabricated as thin films [24][25][26]. This motivated us to synthesise and vividly study the 3D ordered as well as morphologically different mesoporous alumina-ceria films.…”