articleNano EnergyJan 10, 2023HYBRID OA

Tuning oxygen vacancies in Bi4Ti3O12 nanosheets to boost piezo-photocatalytic activity

QTQiao TangJWJiang WuXCXiangzhong ChenRSRoger Sanchis‐GualAVAndrea Veciana

ETH Zurich · Sun Yat-sen University · +3 more institutions

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Abstract

Piezo-photocatalysis has emerged as a promising strategy to address environmental pollution and the fast-growing energy shortage. Unfortunately, current efficiencies of piezo-photocatalysts are still far from ideal, and improving their catalytic efficiency remains challenging. In this paper, we introduce oxygen vacancies (OVs) in Bi4Ti3O12 (BIT) nanosheets to boost their piezo-photocatalytic performance. Compared to pristine BIT nanosheets, BIT with an optimized OV concentration exhibit excellent piezo-photocatalytic activity, with an enhancement of 2.2 times the degradation rate constant (k = 0.214 min−1) for Rhodamine B (RhB). The effect of OVs on the adsorption energy and Bader charges was also investigated…

Citation impact

178
total citations
FWCI
10.72
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100%
References
49
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Authors

16

Topics & keywords

Topics
Keywords
  • Photocatalysis
  • Materials science
  • Rhodamine B
  • Adsorption
  • Degradation (telecommunications)
  • Catalysis
  • Nanotechnology
  • Density functional theory
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