Synthesis of 2D/2D direct Z-scheme WO3/Bi5O7I heterojunctions for decomposition and detoxification of organic compounds under simulated sunlight

Zhang, Yakun; Liu, Haijin; Peng, Jianbiao; Guo, Jun; Wang, Bingjie; Li, Ding; Cao, Xin; Yu, Chang Yeon; Liu, Guoguang

doi:10.1016/j.apsusc.2022.156050

Cited by 15 publications

(1 citation statement)

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“…In Figure S1, the survey spectrum confirmed the presence of Bi, I, O and Mo elements, which is in agreement with the elemental mappings of EDS. As exhibited in Figure 4a, the Bi 4f spectrum of BM/BI-3 is composed of two peaks at 159.4 and 164.9 eV, which are correlated with the Bi 4f7/2 and Bi 4f5/2 of Bi 3+ [38,39]. In the high resolution XPS spectrum of I 3d for BM/BI-3 (Figure 4b), two peaks at 619.4 and 630.8 eV can be obviously detected, which are assigned to the I 3d5/2 and I 3d3/2, respectively [34].…”

Section: Materials Characterizationmentioning

confidence: 92%

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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Section: Materials Characterizationmentioning

confidence: 92%