Sodium alginate-TiO2-bentonite nanocomposite synthesis for photocatalysis of methylene blue dye removal

R. Subekti, H. Helmiyati

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)


In this study, nanocomposite based on biopolymer using sodium alginate (NaAlg) and bentonite intercalated by TiO2 was synthesized. Bentonite in the nanocomposite was used as a template for TiO2 nanoparticles formation through in-situ method and NaAlg was used as catalyst supporter in order to obtain nanocomposite material, which was expected as dye waste removal. The nanocomposite was characterized using Fourier Transform Infrared (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray (EDX) and Tunneling Electron Microscopy (TEM). The obtained nanocomposite had TiO2 average nanoparticles size around 35 nm. Nanocomposite was applied for photocatalysis to remove the dye waste of methylene blue (MB). Degradation percentage was achieved at 90.50 % with the optimum condition at pH 8 with photocatalysis time at 30 min and 30 mg nanocomposite mass. Biopolymer-based sodium alginate and TiO2-bentonite nanocomposite can be applied to reduce dyestuff that is biodegradable and environmentally friendly waste.

Original languageEnglish
Article number012018
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 28 Apr 2020
Event3rd International Symposium on Current Progress in Functional Materials 2018, ISCPFM 2018 - Depok, Indonesia
Duration: 8 Aug 20189 Aug 2018


  • bentonite
  • biopolymers
  • catalyst
  • nanocomposite
  • sodium alginate


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