Potential of sodium alginate/titanium oxide biomembrane nanocomposite in DMFC application

Norazuwana Shaari, Siti Kartom Kamarudin, Zulfirdaus Zakaria

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A proton exchange membrane was synthesized consuming a sodium alginate biopolymer as the matrix and titanium oxide as the nanofiller. The titanium oxide content varied from 5 to 25 wt%. The biomembrane nanocomposite performs better than the pristine sodium alginate membrane based on liquid uptake, methanol permeability, proton conductivity, ion exchange capacity, and oxidative stability outcomes. The unique properties of sodium alginate and titanium oxide lead to outstanding interconnections, thus producing new materials with great characteristics and enhanced performance. The highest proton conductivity achieved in this study is 17.3 × 10-3 S cm-1, which performed by SAT5 (25 wt%) membranes at 70°C. An optimal content of titanium oxide enhances the conductivity and methanol permeability of the membrane. Additionally, the hydrophilicity of pure sodium alginate is greatly reduced and achieves a good liquid uptake capacity and swelling ratio. The characteristics of the SA/TiO2 biomembrane nanocomposite were determined with field emission scanning electron microscope, Fourier transform infrared, X-ray diffraction, thermal gravimetric analysis/differential scanning calorimetry, and mechanical strength analysis.

Original languageEnglish
JournalInternational Journal of Energy Research
DOIs
Publication statusAccepted/In press - 1 Jan 2019

Fingerprint

Sodium alginate
Direct methanol fuel cells (DMFC)
Titanium oxides
Nanocomposites
Membranes
Proton conductivity
Ion exchange
Methanol
Gravimetric analysis
Biopolymers
Hydrophilicity
Liquids
Field emission
Strength of materials
Swelling
Differential scanning calorimetry
Fourier transforms
Protons
Electron microscopes
Infrared radiation

Keywords

  • alginate
  • biomembrane
  • nanocomposite
  • titanium oxide

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Potential of sodium alginate/titanium oxide biomembrane nanocomposite in DMFC application. / Shaari, Norazuwana; Kamarudin, Siti Kartom; Zakaria, Zulfirdaus.

In: International Journal of Energy Research, 01.01.2019.

Research output: Contribution to journalArticle

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