Photo-catalytic dye degradation of methyl orange using zirconia–zeolite nanoparticles

Background: The study focuses on the synthesis of chitosan/ Fe2O3 nanocomposite, its characterization and application in methyl orange dye degradation. Methods: The synthesized chitosan/ Fe2O3 nanocomposite was characterized with Powder X-Ray Diffraction, Fourier Transformation Infrared Spectroscopy (FTIR), Transmission Electron Microscopy (TEM) and UV-Vis Spectroscopy. Results: The characterization showed that the Fe2O3nanoparticles were embedded in the polymer matrix of chitosan. The size of the Fe2O3nanoparticles were less than 10nm and the crystallite size was 1.22 nm.The synthesized chitosan/ Fe2O3nanocomposite was tested for methyl orange degradation using different parameters such as effect of contact time, effect of dose, effect of concentration and effect of pH for the degradation of methyl orange dye in aqueous solution.The Fruendlich, Langmuir and Temkin isotherm studies were also conducted for adsoption of methyl orange on Chitosan/ Fe2O3nanocomposite. Conclusion: The study indicated that the synthesized chitosan/Fe2O3 nanocomposite had the potential of degrading methyl orange dye up to 75.04% under the set condition in this experiment which indicate that Chitosan/ Fe2O3 nanocomposite is a viable option that can be used for the degradation of methyl orange dye.

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Synthesis and Dye Degradation Properties of Cu2+ Complexes with Benzimidazole Derivatives

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.726-731.2449 ◽

2013 ◽

Vol 726-731 ◽

pp. 2449-2452 ◽

Cited By ~ 1

Author(s):

Yin Zhi Jiang ◽

Yong Qiang Shi ◽

Lian Zhu Tian ◽

Huo Ying Xu

Keyword(s):

Methyl Orange ◽

Ir Spectra ◽

Dye Degradation ◽

Degradation Products ◽

Hplc Method ◽

Uv Spectra ◽

Benzimidazole Derivatives ◽

Coordination Sites ◽

Degradation Properties ◽

Degradation Of Methyl Orange

Six benzimidazole derivatives were synthesized and charactrized by IR spectra, 1H-NMR spectra and MS spectra. The coordination reaction of the derivatives with CuCl2. And six novel Cu (II) complexes with the derivatives were prepared and characterized by UV spectra, IR spectra and elemental analysis. The catalytic degradation of methyl orange aqueous solution was investigated using the complexes as catalysis in presence H2O2 by HPLC method and Vis-spectrophotometry. The result of characterization showed that there are four coordination sites around Cu (II) in all complexes, which are respectively occupied by one sulfur atom (from the derivative), one nitrogen atom (from the derivative), one oxygen atom ( from the OH-) and one chlor atom (from the Cl-). The degradation of methyl orange indicated that all the complexes show the properties of enzyme activity. And the main degradation products determined were hydroquinone and maleic acid.

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Photocatalytic Dye and Cr(VI) Degradation Using a Metal-Free Polymeric g-C3N4 Synthesized from Solvent-Treated Urea

Polymers ◽

10.3390/polym11010182 ◽

2019 ◽

Vol 11 (1) ◽

pp. 182 ◽

Cited By ~ 13

Author(s):

Chechia Hu ◽

Yi-Ching Chu ◽

Yan-Ru Lin ◽

Hung-Chun Yang ◽

Ke-Hsuan Wang

Keyword(s):

Methyl Orange ◽

Hexavalent Chromium ◽

Lattice Strain ◽

Dye Degradation ◽

First Order ◽

Crystal Imperfection ◽

Visible Light Driven ◽

Small Lattice ◽

Photocatalytic Dye Degradation ◽

Degradation Of Methyl Orange

The development of visible-light-driven polymeric g-C3N4 is in response to an emerging demand for the photocatalytic dye degradation and reduction of hexavalent chromium ions. We report the synthesis of g-C3N4 from urea treated with various solvents such as methanol, ethanol, and ethylene glycol. The samples were characterized and the Williamson–Hall method was applied to investigate the lattice strain of the samples. The activity of the samples was evaluated by observing the degradation of methyl orange and K2Cr2O7 solution under light irradiation. Photocatalytic reaction kinetics were determined as pseudo-first-order and zero-order for the degradation of methyl orange and reduction of hexavalent chromium, respectively. Due to the inhibited charge separation resulting from the small lattice strain, reduced crystal imperfection, and sheet-like structure, g-C3N4 obtained from ethanol-treated urea exhibited the highest activity among the evaluated samples.

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