Abstract
AbstractNanoporous materials have been widely used in many fields. However, their synthesis with uniform particle shapes, pore sizes, pore volumes, and surface areas remains a considerable challenge. Thus, choosing a suitable controllable method for synthesizing nanoporous materials is crucial to obtain appropriate properties. Herein, nanoporous titania particles (NPTPs) were prepared via the hydrothermal method. This study investigated how the synthesis parameters such as the type of chelating agent, the hydrolysis method, and the drying technique affected the properties of NPTPs. The NPTPs were characterized by XRD, FESEM, TEM, and BET. The results demonstrated that when acetylacetone (ACAC, as the chelating agent), the spray‐hydrolysis (SH) method, and the freeze‐drying (FD) technique were used, NPTPs achieved a more uniform particle shape, a smaller particle size, a larger pore size, a larger pore volume, and a higher surface area. Ultimately, the photocatalytic degradation (PCD) of methylene blue (MB) was examined using improved NPTPs.
Highlights
Nanotechnology has received international attention and various governments and agencies have made huge investments in it [1]
The results demonstrated that when acetylacetone (ACAC), the spray-hydrolysis (SH) method, and the freeze-drying (FD) technique were used, nanoporous titania particles (NPTPs) achieved a more uniform particle shape, a smaller particle size, a larger pore size, a larger pore volume, and a higher surface area
This study demonstrated that the type of chelating agent, the hydrolysis method, and the drying technique had considerable effects on the structural properties of the titania particles synthesized via the hydrothermal method
Summary
Nanotechnology has received international attention and various governments and agencies have made huge investments in it [1]. Nanomaterials (notably metal oxides) which have unique properties are predominantly employed in most sciences and industries [1, 2]. Titania (titanium dioxide, TiO2) has received special attention in many applications such as pharmaceutical and food additives [3], medical components [4, 5], air purification [6], water disinfection [7, 8], etc. Various industries make use of dyes (methylene blue, congo red, Eriochrome Black T, etc.) in the production process [14]. Among these dyes, methylene blue (MB) is highly carcinogenic and hazardous to human health and the environment [15]. Studies have shown that this cationic dye can be degraded by titania and converted to harmless substances [14]
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