Piezo-Fenton tandem catalysis of single-phase Bi2Fe4O9 nanosheets against Enterococcus faecalis biofilms in dentin canals

IF 5.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-10 DOI:10.1016/j.materresbull.2025.113946

Lixiang Jian , Zhenyue Yu , Xiao Wu , Chunlin Zhao , Cong Lin , Min Gao , Xinan Chen , Yi Lin

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Abstract

Enterococcus faecalis (E. faecalis) is one of the primary bacteria that causes endodontic failure. The formation of biofilms in root canals makes it resistant to common antimicrobial irrigants. Here, single-phase Bi₂Fe₄O₉ (BFO) nanosheets are used to effectively eradicate E. faecalis biofilms via piezo-Fenton tandem catalysis. The nanosheet morphology endows BFO with excellent piezocatalytic ability, which boosts the production of H₂O₂ under ultrasonic (US) stimuli. The in-situ generated H₂O₂ further facilitates the iron-based Fenton reaction in BFO, thereby accelerating the destruction of membrane structures of E. faecalis biofilms. Moreover, the piezo-Fenton tandem catalysis only requires an US power of 60 W, which can be readily obtained via US irrigation during routine dental treatments. Accordingly, single-phase BFO nanosheets provide a practical and highly efficient approach for eradicating E. faecalis biofilms in dentin canals.

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压电- fenton串联催化单相Bi2Fe4O9纳米片对牙本质管中粪肠球菌生物膜的作用

粪肠球菌（E. faecalis）是导致牙髓衰竭的主要细菌之一。根管中生物膜的形成使其对常见的抗菌冲洗剂具有抵抗力。在这里，单相Bi2Fe4O9 （BFO）纳米片通过压电- fenton串联催化有效地去除粪肠球菌生物膜。纳米片的形貌使BFO具有优异的压电催化能力，在超声刺激下促进H2O2的生成。原位生成的H2O2进一步促进了BFO中的铁基Fenton反应，从而加速了粪肠杆菌生物膜膜结构的破坏。此外，压电- fenton串联催化只需要60 W的美国功率，这可以在常规牙科治疗期间通过美国冲洗轻松获得。因此，单相BFO纳米片为根除牙本质管内粪肠球菌生物膜提供了一种实用而高效的方法。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.