TY - JOUR
T1 - Borax-cross-linked guar gum-manganese dioxide composites for oxidative decolorization of methylene blue
AU - Dassanayake, R.S.
AU - Rajakaruna, E.
AU - Abidi, Noureddine
PY - 2019
Y1 - 2019
N2 - Borax-cross-linked guar gum-manganese dioxide (GGB-MnO2) composite was synthesized using an environmentally friendlysynthesis route and investigated for its efficiency of decolorizing methylene blue (MB) dye solution by an ultraviolet-visible(UV-Vis) spectrophotometric study. The GGB-MnO2 composite was characterized using X-ray diffraction (XRD), field emissionscanning electron microscopy (FESEM), energy-dispersive X-ray (EDX) spectroscopy, Fourier-transform infrared (FTIR)spectroscopy, and thermogravimetric analysis (TGA). The composite (1.2 g/L) exhibited excellent oxidative decolorization ofMB (30 mg/L, 50 mL) solution to over 99% in 6, 13, and 40 min at pH 4, 7, and 10, respectively. The complete decolorization ofMB occurred via a catalytic adsorption-oxidation-desorption mechanism. The GGB-MnO2 composite showed very goodreusability and was stable after ten successive cycles with negligible losses of the decolorization efficiency.
AB - Borax-cross-linked guar gum-manganese dioxide (GGB-MnO2) composite was synthesized using an environmentally friendlysynthesis route and investigated for its efficiency of decolorizing methylene blue (MB) dye solution by an ultraviolet-visible(UV-Vis) spectrophotometric study. The GGB-MnO2 composite was characterized using X-ray diffraction (XRD), field emissionscanning electron microscopy (FESEM), energy-dispersive X-ray (EDX) spectroscopy, Fourier-transform infrared (FTIR)spectroscopy, and thermogravimetric analysis (TGA). The composite (1.2 g/L) exhibited excellent oxidative decolorization ofMB (30 mg/L, 50 mL) solution to over 99% in 6, 13, and 40 min at pH 4, 7, and 10, respectively. The complete decolorization ofMB occurred via a catalytic adsorption-oxidation-desorption mechanism. The GGB-MnO2 composite showed very goodreusability and was stable after ten successive cycles with negligible losses of the decolorization efficiency.
M3 - Article
SP - 11
JO - J. Nanomaterials
JF - J. Nanomaterials
ER -