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Improved photocatalytic efficiency of MAl2O4 @ activated carbon based nanocomposites in removing malachite green dye under visible light

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Abstract

Nanocomposites of spinel aluminate (MAl2O4) based materials decorated with activated carbon (AC) were synthesized using chemical precipitation method. The X-ray diffraction spectra showed the cubic crystalline structure for the nanocomposites. The existence of M–O bond was confirmed by FTIR data. The SEM micrographs revealed the porous behavior of the nanocomposites. The existence of appropriate elements was proved by EDS. HR-TEM results were agreeable with the XRD data. The UV–Visible spectra of the MAl2O4@AC nanocomposites showed a good absorbance behavior in the samples. The nanocomposites were very effective in eliminating the malachite green (MG) dye from water by the photo-degradation reaction. The MG dye before and after degradation was characterized by HPLC-Mass analysis. The photocatalytic degradation of MG follows pseudo-first-order reaction mechanism, i.e., Langmuire and Hinshelwood kinetic model. Among the photocatalysts studied, Co0.85Ni0.15Al2O4-δ@AC nanocomposite exhibited excellent degradation efficiency in removing toxic MG dye completely within 90 min under visible light irradiation.

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Acknowledgements

The authors thank Karunya Institute of Technology and Sciences (KITS) for promoting nanomaterials chemistry based research activity.

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Authors and Affiliations

  1. Department of Applied Chemistry, School of Sciences, Arts, Media and Management, Karunya Institute of Technology and Sciences (Deemed to be University), Tamil Nadu, Karunya Nagar, Coimbatore, 641 114, Tamil Nadu, India

    Manasai Arunkumar, Arputharaj Samson Nesaraj & Chinnappan Joseph Kennady

  2. Department of Civil Engineering, School of Engineering and Technology, Karunya Institute of Technology and Sciences (Deemed to be University), Tamil Nadu, Karunya Nagar, Coimbatore, 641 114, Tamil Nadu, India

    Clementz Edwardraj Freeda Christy

  3. Department of Chemistry, School of Advanced Sciences, Kalasalingam Academy of Research and Education (Deemed to be University), Tamil Nadu, Anand Nagar, Krishnankoil, 626 126, Tamil Nadu, India

    Arputharaj Samson Nesaraj

  4. Department of Civil Engineering, School of Mechanical, Aeronautical, Automobile and Civil Engineering, Kalasalingam Academy of Research and Education (Deemed to be University), Tamil Nadu, Anand Nagar, Krishnankoil, 626 126, Tamil Nadu, India

    Clementz Edwardraj Freeda Christy

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Manasai Arunkumar—Resources, design of work, investigation, writing—review & editing; Arputharaj Samson Nesaraj—Conceptualization, Methodology, design of work, writing—original draft; Clementz Edwardraj Freeda Christy—the acquisition, analysis and Chinnappan Joseph Kennady—Interpretation of data.

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Arunkumar, M., Nesaraj, A.S., Christy, C.E.F. et al. Improved photocatalytic efficiency of MAl2O4 @ activated carbon based nanocomposites in removing malachite green dye under visible light. Nanotechnol. Environ. Eng. 8, 643–654 (2023). https://doi.org/10.1007/s41204-022-00300-x

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