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Catalytic effect on hydrogen de/absorption properties of MgH2 − x wt% MM (x = 0, 10, 20, 30) nanomaterials

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Abstract

Reversible hydrogen storage in MgH2 under specified conditions is a possible way for the positive reception of hydrogen economy, in which the developments of cheap and highly efficient catalysts are the major challenge, still now. Herein, MgH2 − x wt% MM (x = 0, 10, 20, 30) nanomaterials are prepared via ball milling method and has been evaluated for the hydrogen storage performance, which are characterized by XRD, SEM and DTA/DSC. The hydrogen absorption properties of nanomaterials are measured by pressure composition isotherm, and analysis show that the MgH2 − 30 wt% MM nanomaterials have the maximum hydrogen absorption capacity (~ 3.27 wt% at 300 °C) than MgH2. The activation energy of nanomaterials is remarkably changed by the introduction of MM as additives in MgH2.

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Funding

Authors (Dr. Chhagan Lal) are thankful to the Science and Engineering Research Board (SERB), New Delhi, India, for the financial support in the form of Early Carrier Research Award (ECRA project Grant No. ECR/2015/000309) and also thankful to the Director of the Centre for Non-Conventional Energy Resources, University of Rajasthan Jaipur Rajasthan, India, for the materials and synthesis facility. One of the authors (Deepak Kr. Yadav) is also greatly thankful to the Department of Physics, University of Rajasthan Jaipur Rajasthan, India, for the Departmental Research Fellowship (DRS).

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Correspondence to Chhagan Lal.

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Responsible editor: Philippe Garrigues

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Yadav, D.K., Chawla, K., Jain, I.P. et al. Catalytic effect on hydrogen de/absorption properties of MgH2 − x wt% MM (x = 0, 10, 20, 30) nanomaterials. Environ Sci Pollut Res 28, 3866–3871 (2021). https://doi.org/10.1007/s11356-020-08986-9

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  • DOI: https://doi.org/10.1007/s11356-020-08986-9

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