Journal
NANO ENERGY
Volume 93, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2021.106831
Keywords
Piezo-photocatalysis; Semiconducting BaTiO3; Hydrothermal synthesis; Carbon coating; Core-shell structures
Categories
Funding
- National Natural Science Foundation of China (NSFC) [U1904213]
- Key Research and Development Program of Jiangsu Province [BE2018008-2]
- Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics) [MCMS-E-0521G02]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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The semiconducting BT@C core-shell structured composite prepared via a hydrothermal method showed higher piezo-photodegradation capability for rhodamine B compared to raw BT, due to the combination with semiconductor properties and the piezoelectric effect.
In this study, a semiconducting BaTiO3@C (BT@C) core-shell structure was successfully prepared via a one-step hydrothermal method assisted by glucose. The exposed Ti4+ on the BT surface was reduced to Ti3+ by glucose during the hydrothermal process, resulting in the formation of a mass of oxygen vacancies. Meanwhile, excess glucose was carbonized and the carbon accumulated on the BT surface to form a BT@C core-shell structure, and the thickness of the carbon shell gradually increased with increasing glucose concentration. The effect of glucose concentration on the phase compositions and morphologies of BT@C nanoparticles was investigated. The asprepared BT@C composites exhibited the higher piezo-photodegradation capability for rhodamine B compared with the raw BT duo to the combination with semiconductor property and piezoelectric effect. The method utilized in this study to fabricate semiconducting BT@C core-shell structured composite can be extended to synthesize the other piezoelectric /ferroelectric@C composites and will open up great potential in the field of piezo-photocatalysis and environmental purification.
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