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Hydrogen Generation and Degradation of Organic Dyes by New Piezocatalytic 0.7BiFeO3-0.3BaTiO3Nanoparticles with Proper Band Alignment

Journal Article


Abstract


  • Piezoelectric materials have recently demonstrated their potential applications in clean energy exploration and environmental remediation through triggering a number of catalytic reactions by harvesting waste vibrational energy in the environment. In this work, unique lead-free 0.7BiFeO3-0.3BaTiO3 (BF-BT) nanoparticles with tuned band structure were synthesized by the hydrothermal method for use as piezoelectric catalysts to generate hydrogen by splitting water; a high production rate of 1.322 mmol/g was achieved in 1 h, which is 10 times higher than the production rate of pure BiFeO3. Of particular interest, BF-BT particles attached to nickel mesh have the ability to degrade rhodamine B in flowing water, demonstrating their potential to treat polluted water by anchoring BF-BT in drains. Finally, we propose novel insight on the piezocatalytic mechanism, which is based on the internal electric field (the sum of the depolarization field and the screening charge field) that drives electron/hole separation and movement.

Publication Date


  • 2021

Citation


  • Sun, Y., Li, X., Vijayakumar, A., Liu, H., Wang, C., Zhang, S., . . . Cheng, Z. (2021). Hydrogen Generation and Degradation of Organic Dyes by New Piezocatalytic 0.7BiFeO3-0.3BaTiO3Nanoparticles with Proper Band Alignment. ACS Applied Materials and Interfaces, 13(9), 11050-11057. doi:10.1021/acsami.1c01407

Scopus Eid


  • 2-s2.0-85102964593

Start Page


  • 11050

End Page


  • 11057

Volume


  • 13

Issue


  • 9

Abstract


  • Piezoelectric materials have recently demonstrated their potential applications in clean energy exploration and environmental remediation through triggering a number of catalytic reactions by harvesting waste vibrational energy in the environment. In this work, unique lead-free 0.7BiFeO3-0.3BaTiO3 (BF-BT) nanoparticles with tuned band structure were synthesized by the hydrothermal method for use as piezoelectric catalysts to generate hydrogen by splitting water; a high production rate of 1.322 mmol/g was achieved in 1 h, which is 10 times higher than the production rate of pure BiFeO3. Of particular interest, BF-BT particles attached to nickel mesh have the ability to degrade rhodamine B in flowing water, demonstrating their potential to treat polluted water by anchoring BF-BT in drains. Finally, we propose novel insight on the piezocatalytic mechanism, which is based on the internal electric field (the sum of the depolarization field and the screening charge field) that drives electron/hole separation and movement.

Publication Date


  • 2021

Citation


  • Sun, Y., Li, X., Vijayakumar, A., Liu, H., Wang, C., Zhang, S., . . . Cheng, Z. (2021). Hydrogen Generation and Degradation of Organic Dyes by New Piezocatalytic 0.7BiFeO3-0.3BaTiO3Nanoparticles with Proper Band Alignment. ACS Applied Materials and Interfaces, 13(9), 11050-11057. doi:10.1021/acsami.1c01407

Scopus Eid


  • 2-s2.0-85102964593

Start Page


  • 11050

End Page


  • 11057

Volume


  • 13

Issue


  • 9