Study of the effect of rutile/anatase TiO₂ nanoparticles synthesized by hydrothermal route in electrospun PVA/TiO₂ nanocomposites

Abstract

Mixed rutile-anatase TiO 2 nanoparticles were synthesized by hydrothermal treatment under acidic conditions and incorporated into poly(vinyl alcohol) (PVA). These nanocomposites were electrospun to produce nanofibers of PVA/TiO 2 , which were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The photocatalytic degradation of Rhodamine B and degradation of the polymer by UV-C lamps were also investigated. The results showed that TiO 2 nanoparticles did not change the morphology and thermal behavior of the nanofiber polymer, but were effective in modifying the UV absorption of PVA without reducing its stability.

Electrospun Nanofibrous Poly (Lactic Acid)/Titanium Dioxide Nanocomposite Membranes for Cutaneous Scar Minimization

“…PLA lead to a 0% residue at this temperature as previously observed (Virovska et al, 2014). With an increase of TiO 2 on the PLA nanofibers, there was an increase in residue produced which supports the presence of the nanoparticles in the nanospun fibers structure (Costa et al, 2013).…”

Anomalous behavior of the dielectric and electrical properties of polymeric nanodielectric poly(vinyl alcohol)–titanium dioxide films

“…In the last decade, PNC materials based on poly(vinyl alcohol) (PVA) and titanium dioxide (i.e., titania or TiO 2 ) have made considerable academic and technological progress because of their wide range of applications in various fields . PVA is a hydrophilic, nontoxic, and biocompatible polymer, and it is completely soluble in hot water.…”

“…In recent years, extensive work on the mechanical, thermal, optical, morphological, and structural properties of PVA–TiO 2 nanocomposites has been carried out to examine their performance improvements for various applications in chemical engineering processes, but their dielectric and electrical properties have yet to be explored to confirm their suitability as flexible‐type polymeric nanodielectrics. Generally, the term nanodielectrics is used for PNCs when they are considered as electrical insulators .…”

Preparation of Sn‐doped CdS/TiO2/conducting polymer fiber composites for efficient photocatalytic hydrogen production under visible light irradiation

“…The electrospinning polymer fibers could prevent the agglomeration of photocatalysts nanoparticle. [23][24][25] The conducting polymer fibers could enhance the separation of photogenerated electron-hole pairs, and increase the efficiency of photocatalysis. [26][27][28] Sn-doped CdS/TiO 2 /conducting polymer fiber composites was evaluated to photocatalytic hydrogen evolution from splitting of water under simulated solar light irradiation.…”

“…To narrow the gap of photocatalyst, we use facile and cheap tin compounds to replace noble metal to decorate CdS and TiO 2 heterogeneous, and use conducting electrospinning polymer fibers to carry the heterogeneous photocatalyst. The electrospinning polymer fibers could prevent the agglomeration of photocatalysts nanoparticle . The conducting polymer fibers could enhance the separation of photogenerated electron–hole pairs, and increase the efficiency of photocatalysis …”