Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 316, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121664
Keywords
Bi2S3; Piezocatalysis; Symmetry breaking; Magnetic field; Cr(VI)
Funding
- National Natural Science Foundation of China, China [U21A20290, 21876047]
- Thousand Talents Plan of Qinghai province, China National Key Research and Development Program of China, China [2018YFC1900105]
- Science Challenge Project, China [TZ2016004]
- Beijing Outstanding Young Scientist Program, China
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In this study, the centrosymmetry of Bi2S3 nanorods is broken by introducing Si defects into the crystal lattice, enabling them to efficiently reduce Cr(VI) through piezocatalysis. Moreover, the application of an alternating magnetic field (AMF) greatly enhances the piezocatalytic reduction.
In this work, the centrosymmetry of Bi2S3 nanorods is broken due to the introduction of large quantities of Si defects in the crystal lattice, which then endows the Bi(2)S(3 )nanorods with the ability to efficiently reduce Cr(VI) by piezocatalysis. Most importantly, the piezocatalytic reduction could be significantly boosted by applying an alternating magnetic field (AMF). The AMF coupled piezocatalysis is achieved by H(2)O(2)and -O-2(-). AMF is found to facilitate the separation of electrons and holes due to the magnetoresistance effect of Bi2S3 nanorods, thus remarkably enhancing the piezocatalysis by largely increasing the generation of H2O2. This work paves a new way for inducing the piezoelectricity of centrosymmetric materials by introducing defects and improving their catalytic activity through AMF, which has a great application potential in energy and environment fields.
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