Enhanced photocatalytic activity of electrochemically synthesized aluminum oxide nanoparticles

Deepak Pathania, Rishu Katwal, Harpreet Kaur

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    Deepak Pathania, Rishu Katwal, and Harpreet Kaur, Enhanced photocatalytic activity of electrochemically synthesized aluminum oxide nanoparticles, Int. J. Miner. Metall. Mater., 23(2016), No. 3, pp.358-371. https://dx.doi.org/10.1007/s12613-016-1245-9
    Deepak Pathania, Rishu Katwal, and Harpreet Kaur, Enhanced photocatalytic activity of electrochemically synthesized aluminum oxide nanoparticles, Int. J. Miner. Metall. Mater., 23(2016), No. 3, pp.358-371. https://dx.doi.org/10.1007/s12613-016-1245-9
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    Enhanced photocatalytic activity of electrochemically synthesized aluminum oxide nanoparticles

    • School of Chemistry, Shoolini University, Solan, 173212(H. P. ), India

    • Department of Chemistry, Punjabi University, Patiala, 147002(Punjab), India

    基金项目: 

    The authors are grateful to NIPER, Mohali, Punjab University, and IIT Roorkee for providing access to instrumentation.

      通信作者:

      Deepak Pathania E-mail: dpathania74@gmail.com

    中文摘要

    In this study, aluminum oxide (Al2O3) nanoparticles (NPs) were synthesized via an electrochemical method. The effects of reaction parameters such as supporting electrolytes, solvent, current and electrolysis time on the shape and size of the resulting NPs were investigated. The Al2O3 NPs were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, thermogravimetric analysis/differential thermal analysis, energy-dispersive X-ray analysis, and ultraviolet–visible spectroscopy. Moreover, the Al2O3 NPs were explored for photocatalytic degradation of malachite green (MG) dye under sunlight irradiation via two processes: adsorption followed by photocatalysis; coupled adsorption and photocatalysis. The coupled process exhibited a higher photodegradation efficiency (45%) compared to adsorption followed by photocatalysis (32%). The obtained kinetic data was well fitted using a pseudo-first-order model for MG degradation.

     

    Enhanced photocatalytic activity of electrochemically synthesized aluminum oxide nanoparticles

    Author Affilications

      • School of Chemistry, Shoolini University, Solan, 173212(H. P. ), India

      • Department of Chemistry, Punjabi University, Patiala, 147002(Punjab), India

    • Funds: 

      The authors are grateful to NIPER, Mohali, Punjab University, and IIT Roorkee for providing access to instrumentation.

    • Received: 06 August 2015; Revised: 26 October 2015; Accepted: 27 October 2015;
    In this study, aluminum oxide (Al2O3) nanoparticles (NPs) were synthesized via an electrochemical method. The effects of reaction parameters such as supporting electrolytes, solvent, current and electrolysis time on the shape and size of the resulting NPs were investigated. The Al2O3 NPs were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, thermogravimetric analysis/differential thermal analysis, energy-dispersive X-ray analysis, and ultraviolet–visible spectroscopy. Moreover, the Al2O3 NPs were explored for photocatalytic degradation of malachite green (MG) dye under sunlight irradiation via two processes: adsorption followed by photocatalysis; coupled adsorption and photocatalysis. The coupled process exhibited a higher photodegradation efficiency (45%) compared to adsorption followed by photocatalysis (32%). The obtained kinetic data was well fitted using a pseudo-first-order model for MG degradation.

     

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