Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 298, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2021.120628
Keywords
Photocatalytic-Fenton; Z-scheme; Surface plasmon resonance; Hollow structure; Photothermal effect
Funding
- National Natural Science Foundation of China [21871078]
- Natural Science Foundation of Heilongjiang Province [JQ2019B001, B2018010]
- Heilongjiang Postdoctoral Startup Fund [LBH-Q14135]
- Heilongjiang University Science Fund for Distinguished Young Scholars [JCL201802]
- Heilongjiang Touyan Innovation Team Program
- Young Innovative Team Supporting Projects of Heilongjiang Province
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The study focuses on a novel hollow cubic Cu2-xS/Fe-POMs/AgVO3 photocatalyst, which achieves spatial charge separation through the construction of dual Z-scheme heterostructures, resulting in a photocatalytic-Fenton degradation rate of 98.6% for bisphenol A within 150 minutes.
The assembly photocatalyst with rational design of nanostructure can effectually inhibit the rapid charge recombination and improve the photocatalytic performance. Herein, a hollow cubic Cu2-xS/Fe-polyoxometalate/AgVO3 (Cu2-xS/Fe-POMs/AgVO3) dual Z-scheme heterojunction superstructure is constructed on the surface of a hollow cubic Cu2-xS with a clear structure by continuous growth deposition. The hollow cube structure can promote the utilization of light through the refraction and reflection of light in the cavity. Fe-POMs act as the linker between Cu2-xS and AgVO3, providing adequate active sites. In addition, due to the surface plasmon resonance effect of Cu2-xS, Cu2-xS/Fe-POMs/AgVO3 has an obvious photothermal effect, which extends the photoresponse to near-infrared region. The hollow cubic Cu2-xS/Fe-POMs/AgVO3 photocatalyst has excellent photocatalytic-Fenton degradation rate of 98.6 % for bisphenol A within 150 min due to the formation of dual Z-scheme heterostructures benefiting spatial charge separation. This work provides new insights for fabricating superstructure photocatalyst with high-performance and broad-spectrum response.
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