Polysilicate-Iron Mainly Contains [SiO2]n•Fe2O3, According to the MSDS Sheet Provided by Nankai Chemical. Other Additives Are FeCl3 aq., Na2SiO3, H2SO4.

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• TITLE: Hexagonal Disk Structures Obtained during Carbonization of Botryococcus braunii Residues

  AUTHORS: Aohan Wang, Mikihide Demura, Makoto M. Watanabe, Hiromasa Goto

  KEYWORDS: Hexagonal Disk, Microalgae Residue, Botryococcus braunii, Carbonization Condition, Crystal

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.5 No.2, February 13, 2017

  ABSTRACT: In this study, we report a two-dimensional (2D) hexagonal disk obtained by carbonization of Botryococcus braunii (B. braunii) residues. Carbonization at 700℃followed by naturally cooling down to room temperature under a non-inert gas flow atmosphere affords to yield this unique structure. The 2D hexagonal disks consist of more than 52% carbon and more than 25% oxygen. Slight amount of Fe, silicon and magnesium would be the trigger of the formation of hexagonal structure. Treatment of biomass residue is a challenge in the near future accompanied by the achievement of new energy technology in the industrial level. This research points out that efficient use of discharged biomass residue could create a new avenue for material science. The morphology of obtained crystals carbonized in different conditions, especially with the existence of argon flow, was also investigated.