Fabrication of ultra-thin alumina membranes utilizing waste aluminum cans
Document Type
Article
Publication Date
2-1-2022
Abstract
We report on utilizing waste aluminum cans for anodic aluminum oxide (AAO) membranes fabrication. Aluminum (Al) presents in the cans is about 97 % tested via inductively coupled plasma-mass spectrometry. Synthesis process of the AAO membranes includes heat-treatment and surface polishing of the waste Al sheets, first anodization, aluminum oxide layer removing, second anodization, aluminum substrate separating and pore-widening. Thickness and morphology of the prepared AAO membranes are observed through a field emission scanning electron microscopy. By controlling the second anodization time, the AAO membranes possess ultra-thin thickness in the range of ~60-650 nm. The average pore densities ~1.2 × 1010 and ~ 3.0 × 1010 hole/cm2 of the AAO membranes are obtained at constant anodization voltage of 40 and 25 V, respectively. Hole diameter of the AAO membranes can be varied from 30 to 95 nm via managing the pore-widening time. The ultra-thin AAO membranes with order nano-hole arrays can be used as hard-templates which are promising for unique nanostructures synthesis at low cost and environment friendly.
Identifier
85125081605 (Scopus)
Publication Title
Vietnam Journal of Chemistry
External Full Text Location
https://doi.org/10.1002/vjch.202100085
e-ISSN
25728288
First Page
84
Last Page
91
Issue
1
Volume
60
Recommended Citation
Anh, Dang Hoang; Toan, Ngo Quoc; Tung, Pham Cao Thanh; Son, Cu Thanh; Nguyen, Hieu Pham Trung; and Nguyen, Hoang Duy, "Fabrication of ultra-thin alumina membranes utilizing waste aluminum cans" (2022). Faculty Publications. 3153.
https://digitalcommons.njit.edu/fac_pubs/3153