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Photocatalytic degradation of methyl orange on TiO2/biochar assisted by ionic liquids


TiO2 was synthesized on biochar derived from wood waste assisted by ionic liquids (1-butyl-3-methylimidazolium chloride ([C4mim]Cl) and 1-butyl-3-methylimidazolium tetrafluoroborate ([C4mim][BF4])). We compared the effects of photocatalysts synthesized with [C4mim]Cl (Ti–WB–Cl) and [C4mim][BF4] (Ti–WB–BF4) on the degradation of methyl orange. Using XRD, the nanoparticles of anatase TiO2 in Ti–WB–Cl and Ti–WB–BF4 were formed. Within 120 min under UV, the 88.1 and 99.8% of methyl orange were degraded, respectively. Moreover, by-products were barely observed using Ti–WB–BF4 photocatalyst. By XPS spectra, the Ti–WB–BF4 with carbon and fluorine incorporation suggests that enhanced photocatalytic degradation of methyl orange had occurred.

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The financial support of the Ministry of Science and Technology ROC (MOST 109-2221-E-239-014) is gratefully acknowledged. The authors gratefully acknowledge the use of XRD 5100 and ESCA 000200 equipments belonging to the Core Facility Center of National Cheng Kung University.

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Correspondence to Hsin-Liang Huang.

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Huang, HL., Huang, ZH. & Tzeng, LS. Photocatalytic degradation of methyl orange on TiO2/biochar assisted by ionic liquids. MRS Communications (2021).

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  • Catalytic
  • Ti
  • Environmentally benign
  • Organic
  • Degradable
  • XPS