With the fast-growing demand toward innovative functional and intelligent fibrous materials, the photocatalytic self-cleaning surface functionalization of fibers has universally aroused tremendous interest in recent years. Due to the promising properties of nanosized photosensitive substances in decomposing undesirable contaminants, intensive research has incessantly been conducted to explore their multi-functional properties and potential applications. This review paper intends to summarize recent developments of contemporary technologies, particularly emphasizing on the progress achieved in the past five years in the application of nanostructured titanium dioxide photocatalyst in fibrous materials. The fundamental concepts, limitation, societal impact and future prospects are also discussed.
Proteinic fibers, capable of converting incident light to self-cleaning power to decompose its contamination and harmful microorganisms in a process of photocatalytic purification, are very interesting materials for various applications. In this contribution, self-cleaning keratin fibers have been realized following a bottom-up nanotechnology approach.
In this article, ferrous ferric oxide and Fe(3)O(4)-doped titanium dioxide have been synthesized by a low-temperature sol-gel process. In particular, we studied the structural characteristics of newly synthesized photosensitive catalysts and their photocatalytic abilities under UV and visible light irradiation. The elemental composition, surface area, crystallinity, and morphology of synthesized catalysts were characterized by Fourier transformation infrared spectrophotometry, X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy with selected area electron diffraction and energy-dispersive X-ray spectroscopy. The UV-vis transmission, zeta-potential, and cytotoxicity of the synthesized catalysts are also discussed. It is anticipated that the synthesized ferrous ferric oxide arrays a prospective photocatalyst substitute for titanium dioxide.
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