In situ growth of Bi0 and BiOBr on Bi-MOF nanoribbons via chemically bond for boosting the photocatalytic chlortetracycline removal by MOF framework, oxygen vacancies, and mediator-based Z-scheme heterojunction

IF 2.1 4区材料科学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Nanoparticle Research Pub Date : 2025-04-03 DOI:10.1007/s11051-025-06298-y

Ziqi Yang, Fengyan Ma, Yu Zhang, Meihua Ling, Hong Zheng, Yan Yu, Li Li

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引用次数: 0

Abstract

Design of chemically bonded heterojunction with oxygen vacancies is a serviceable method to facilitate the performance of metal-organic framework (MOFs). Herein, Bi–MOF as bismuth source and frame, chemically bonded close-contact Bi/BiOBr@Bi–MOF heterojunction with intact backbone was successfully developed by two-step easy in situ halogenation and photoreduction of Bi–MOF. The halide amount and photoreduction time regulate the BiOBr and metal Bi loading amount and oxygen defects concentration. Bi/BiOBr@Bi–MOF-5-1 revealed the best photocatalytic efficiency (rate constant) of 97.1% (0.0607 min⁻¹) toward chlortetracycline (CTC) after full-spectrum light irradiation for 60 min. The rate constants were 7.2, 2.2, and 2.2 times higher than Bi–MOF, BiOBr, and Bi/BiOBr-5 without MOF structure, respectively, which is owing to the synergistic effect among Bi–MOF framework, OVs, and mediator-based Z-scheme heterojunction by chemically bonding with metal Bi as carrier transfer bridge. This study provides a broad prospect for reasonable design and flexible synthesis of semiconductor/MOF heterojunction with Bi–MOF as nice precursor.

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通过化学键在 Bi-MOF 纳米带上原位生长 Bi0 和 BiOBr，利用 MOF 框架、氧空位和基于介质的 Z 型异质结提高光催化去除金霉素的能力

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来源期刊

Journal of Nanoparticle Research 工程技术-材料科学：综合

CiteScore

4.40

自引率

4.00%

发文量

198

审稿时长

3.9 months

期刊介绍： The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size. Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology. The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.