{"title":"Construction of Bi4O5I2/Bi2MoO6 Z-scheme heterojunction with enhanced photocatalytic performance to degrade antibiotics","authors":"Ming-Rui Chao , Shuwen Hou , Shou-Nian Ding","doi":"10.1016/j.mssp.2025.109456","DOIUrl":null,"url":null,"abstract":"<div><div>This research reports the synthesis procedure and evaluates the photocatalytic efficacy of rod-loaded flower-like Bi<sub>4</sub>O<sub>5</sub>I<sub>2</sub>/Bi<sub>2</sub>MoO<sub>6</sub> (BIB) nanocomposites in the photodegradation process of tetracycline (TC) under simulated sunlight irradiation. The BIB composites were synthesized via a solvothermal approach, and their structural and property characteristics were analyzed using SEM, XRD, TEM, FT-IR, and XPS. The outcomes of photocatalytic degradation experiments demonstrated that the BIB-2 composite manifested the most remarkable photocatalytic activity, under 60 min of irradiation, achieving a TC removal rate of 91.8 %. This enhanced performance might be credited to the formation of a Z-scheme heterojunction, which facilitated the separation and transfer of photogenerated holes and electrons. Electrochemical and optical analyses revealed that BIB-2 had superior charge separation capabilities and absorption of light. Experiments of active species capture and EPR measurements confirmed the pivotal function of superoxide radicals (•O<sub>2</sub><sup>−</sup>) and hydroxyl (•OH) within the degradation process, which may be consistent with the Z-scheme mechanism. Furthermore, BIB-2 demonstrated good stability, maintaining 84.3 % degradation efficiency after four cycles. This study offers significant perspectives on the design of sophisticated photocatalytic materials aimed at environmental restoration and accentuates the potential of BIB composites in addressing antibiotic contaminants present in water sources.</div></div>","PeriodicalId":18240,"journal":{"name":"Materials Science in Semiconductor Processing","volume":"192 ","pages":"Article 109456"},"PeriodicalIF":4.6000,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science in Semiconductor Processing","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1369800125001933","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/16 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This research reports the synthesis procedure and evaluates the photocatalytic efficacy of rod-loaded flower-like Bi4O5I2/Bi2MoO6 (BIB) nanocomposites in the photodegradation process of tetracycline (TC) under simulated sunlight irradiation. The BIB composites were synthesized via a solvothermal approach, and their structural and property characteristics were analyzed using SEM, XRD, TEM, FT-IR, and XPS. The outcomes of photocatalytic degradation experiments demonstrated that the BIB-2 composite manifested the most remarkable photocatalytic activity, under 60 min of irradiation, achieving a TC removal rate of 91.8 %. This enhanced performance might be credited to the formation of a Z-scheme heterojunction, which facilitated the separation and transfer of photogenerated holes and electrons. Electrochemical and optical analyses revealed that BIB-2 had superior charge separation capabilities and absorption of light. Experiments of active species capture and EPR measurements confirmed the pivotal function of superoxide radicals (•O2−) and hydroxyl (•OH) within the degradation process, which may be consistent with the Z-scheme mechanism. Furthermore, BIB-2 demonstrated good stability, maintaining 84.3 % degradation efficiency after four cycles. This study offers significant perspectives on the design of sophisticated photocatalytic materials aimed at environmental restoration and accentuates the potential of BIB composites in addressing antibiotic contaminants present in water sources.
期刊介绍：
Materials Science in Semiconductor Processing provides a unique forum for the discussion of novel processing, applications and theoretical studies of functional materials and devices for (opto)electronics, sensors, detectors, biotechnology and green energy.
Each issue will aim to provide a snapshot of current insights, new achievements, breakthroughs and future trends in such diverse fields as microelectronics, energy conversion and storage, communications, biotechnology, (photo)catalysis, nano- and thin-film technology, hybrid and composite materials, chemical processing, vapor-phase deposition, device fabrication, and modelling, which are the backbone of advanced semiconductor processing and applications.
Coverage will include: advanced lithography for submicron devices; etching and related topics; ion implantation; damage evolution and related issues; plasma and thermal CVD; rapid thermal processing; advanced metallization and interconnect schemes; thin dielectric layers, oxidation; sol-gel processing; chemical bath and (electro)chemical deposition; compound semiconductor processing; new non-oxide materials and their applications; (macro)molecular and hybrid materials; molecular dynamics, ab-initio methods, Monte Carlo, etc.; new materials and processes for discrete and integrated circuits; magnetic materials and spintronics; heterostructures and quantum devices; engineering of the electrical and optical properties of semiconductors; crystal growth mechanisms; reliability, defect density, intrinsic impurities and defects.
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