Influence of TiO₂ Nanoparticles on Enhancing the Properties Activity of Organic Polymeric Materials for Industrial Applications

Abstract

Novel composite (MC/TiO 2 ) films consisting of titanium dioxide nanoparticles (TiO 2 NPs) and organic polymer methylcellulose (MC), were synthesized for applied in photocatalysis and industrial sectors. The preparation of the nanocomposites MC/TiO 2 films were verified successfully by EDX technique, which demonstrated the uniform distribution of TiO 2 in the MC. Moreover, in frequency of 20 Hz to 5.5 MHz, the dielectric properties of MC as a function of TiO 2 concentration were determined. The conductivity improved from 5.8 × 10 −8 S.cm −1 for MC to 3.8 × 10 −6 S.cm −1 for the composite MC/TiO 2 , and the dielectric constant <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msup> <mml:mrow> <mml:mi>ε</mml:mi> </mml:mrow> <mml:mrow> <mml:mo accent="true">′</mml:mo> </mml:mrow> </mml:msup> </mml:math> has risen from 87 for MC to 179 for the composite MC/TiO 2 . In addition, the energy density increases from 3.86 × 10 −4 J m −3 for MC to 7.94 × 10 −4 J m −3 for MC/TiO 2 , and the relaxation time <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>τ</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>r</mml:mi> </mml:mrow> </mml:msub> </mml:math> dropped from 11.5 × 10 −5 sec to 2.58 × 10 −5 . In summary, the data investigated that the dielectric characteristics of MC/TiO 2 were modified for usage in different applications as wastewater treatment and energy storage devices.