Synthesis of Bi4O5I2 microbars for pollutant degradation through a photocatalytic process

Zuarez-Chamba, Michael; Tuba-Guamán, Damián; Quishpe, Miguel; Pazmiño, Katherine; Vizuete, Karla; Debut, Alexis; Cisneros–Pérez, Pablo A.; Reinoso, Carlos; Santacruz, Cristian; Salgado, Andrea; Arroyo, Carlos R.; Iza, Peter; Miguel, Natividad; Niño, Zulay; Herrera‐Robledo, Miguel

doi:10.1016/j.matlet.2023.133888

Cited by 3 publications

(1 citation statement)

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“…Similar to other photocatalytic materials, various strategies such as crystal plane regulation [21,22], element doping [23,24], surface oxygen vacancies [25,26] and construction of heterojunctions [27,28] can be applied to boost the photocatalytic performance of BiOI. Furthermore, the construction of Bi x O y I z through the bismuth-rich strategy has been shown to be useful for modulating the band structure and enhancing redox capacity [29][30][31]. Furthermore, the bismuth-rich strategy is easy to implement and cannot introduce other elements.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity and the Mechanism of the Z-Scheme Bi2MoO6/Bi5O7I Heterojunction under Visible Light

Ma,

Li,

Wang

et al. 2023

Molecules

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Z-scheme Bi2MoO6/Bi5O7I heterojunction was constructed by an in situ solvothermal method, which was composed of Bi2MoO6 nanosheets growing on the surface of Bi5O7I microrods. The antibacterial activities under illumination towards Escherichia coli (E. coli) were investigated. The Bi2MoO6/Bi5O7I composites exhibited more outstanding antibacterial performance than pure Bi2MoO6 and Bi5O7I, and the E. coli (108 cfu/mL) was completely inactivated by BM/BI-3 under 90 min irradiation. Additionally, the experiment of adding scavengers revealed that h+, •O2− and •OH played an important role in the E. coli inactivation process. The E. coli cell membrane was damaged by the oxidation of h+, •O2− and •OH, and the intracellular components (K+, DNA) subsequently released, which ultimately triggered the apoptosis of the E. coli cell. The enhanced antibacterial performance of Bi2MoO6/Bi5O7I heterojunction is due to the formation of Z-scheme heterojunction with the effective charge transfer via the well-contacted interface of Bi2MoO6 and Bi5O7I. This study provides useful guidance on how to construct Bi5O7I-based heterojunction for water disinfection with abundant solar energy.

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