Jing Wang , Siyu Zhang , Lidong Kou , Kunzhen He , Qingyuan Li , Chaojun Wu , Xing Xing , Yanjin Wang
{"title":"LED可见光驱动下快速合成富氧空位BiMnx复合材料增强抗生素去除","authors":"Jing Wang , Siyu Zhang , Lidong Kou , Kunzhen He , Qingyuan Li , Chaojun Wu , Xing Xing , Yanjin Wang","doi":"10.1016/j.eti.2025.104374","DOIUrl":null,"url":null,"abstract":"<div><div>NaBiO<sub>3</sub> is a low-cost photocatalyst with good performance for organic removal. Oxygen vacancies (OVs) play crucial roles in mediating oxygen activation and electron-hole separation during visible light-driven photocatalysis. In this study, Mn ions were doped into the commercial NaBiO<sub>3</sub> by a facile in-situ technique to construct OVs for enhancing sulfamethazine (SMT) removal. By doping 0.001–0.01 mmol of Mn<sup>2 +</sup> ions, abundant OVs were formed on the initial NaBiO<sub>3</sub> surface, endowing the as-prepared BiMn<sub>x</sub> composites (e.g. BiMn<sub>0.001</sub>) with a fast kinetic (first-order rate constant <em>k</em> 0.68 h<sup>−1</sup>) and a high efficiency (>99 % within 6 h) for SMT degradation. Excellent removal of SMT could be attained across a broad pH range (i.e. pH<sub>0</sub> 5–9) using BiMn<sub>0.001</sub> as the photocatalyst, which could harvest full-spectrum LED white light and showed anti-interference to common water co-existent constituents. Increasing solution temperature was also beneficial for SMT removal. Reactive species including <sup>1</sup>O<sub>2</sub>, holes and electrons played dominant roles for SMT removal. Based on HPLC-MS, the degradation intermediates were identified, and a degradation pathway for SMT was formulated in the BiMn<sub>x</sub>/LED system. The results may shed some light for constructing OVs on catalyst surfaces and preparing LED visible light-responsive photocatalysts for antibiotic removal.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"40 ","pages":"Article 104374"},"PeriodicalIF":6.7000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Facile synthesis of oxygen vacancy-rich BiMnx composites for enhancing antibiotic removal driven by LED visible light\",\"authors\":\"Jing Wang , Siyu Zhang , Lidong Kou , Kunzhen He , Qingyuan Li , Chaojun Wu , Xing Xing , Yanjin Wang\",\"doi\":\"10.1016/j.eti.2025.104374\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>NaBiO<sub>3</sub> is a low-cost photocatalyst with good performance for organic removal. Oxygen vacancies (OVs) play crucial roles in mediating oxygen activation and electron-hole separation during visible light-driven photocatalysis. In this study, Mn ions were doped into the commercial NaBiO<sub>3</sub> by a facile in-situ technique to construct OVs for enhancing sulfamethazine (SMT) removal. By doping 0.001–0.01 mmol of Mn<sup>2 +</sup> ions, abundant OVs were formed on the initial NaBiO<sub>3</sub> surface, endowing the as-prepared BiMn<sub>x</sub> composites (e.g. BiMn<sub>0.001</sub>) with a fast kinetic (first-order rate constant <em>k</em> 0.68 h<sup>−1</sup>) and a high efficiency (>99 % within 6 h) for SMT degradation. Excellent removal of SMT could be attained across a broad pH range (i.e. pH<sub>0</sub> 5–9) using BiMn<sub>0.001</sub> as the photocatalyst, which could harvest full-spectrum LED white light and showed anti-interference to common water co-existent constituents. Increasing solution temperature was also beneficial for SMT removal. Reactive species including <sup>1</sup>O<sub>2</sub>, holes and electrons played dominant roles for SMT removal. Based on HPLC-MS, the degradation intermediates were identified, and a degradation pathway for SMT was formulated in the BiMn<sub>x</sub>/LED system. The results may shed some light for constructing OVs on catalyst surfaces and preparing LED visible light-responsive photocatalysts for antibiotic removal.</div></div>\",\"PeriodicalId\":11725,\"journal\":{\"name\":\"Environmental Technology & Innovation\",\"volume\":\"40 \",\"pages\":\"Article 104374\"},\"PeriodicalIF\":6.7000,\"publicationDate\":\"2025-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Technology & Innovation\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352186425003608\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Technology & Innovation","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352186425003608","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
Facile synthesis of oxygen vacancy-rich BiMnx composites for enhancing antibiotic removal driven by LED visible light
NaBiO3 is a low-cost photocatalyst with good performance for organic removal. Oxygen vacancies (OVs) play crucial roles in mediating oxygen activation and electron-hole separation during visible light-driven photocatalysis. In this study, Mn ions were doped into the commercial NaBiO3 by a facile in-situ technique to construct OVs for enhancing sulfamethazine (SMT) removal. By doping 0.001–0.01 mmol of Mn2 + ions, abundant OVs were formed on the initial NaBiO3 surface, endowing the as-prepared BiMnx composites (e.g. BiMn0.001) with a fast kinetic (first-order rate constant k 0.68 h−1) and a high efficiency (>99 % within 6 h) for SMT degradation. Excellent removal of SMT could be attained across a broad pH range (i.e. pH0 5–9) using BiMn0.001 as the photocatalyst, which could harvest full-spectrum LED white light and showed anti-interference to common water co-existent constituents. Increasing solution temperature was also beneficial for SMT removal. Reactive species including 1O2, holes and electrons played dominant roles for SMT removal. Based on HPLC-MS, the degradation intermediates were identified, and a degradation pathway for SMT was formulated in the BiMnx/LED system. The results may shed some light for constructing OVs on catalyst surfaces and preparing LED visible light-responsive photocatalysts for antibiotic removal.
期刊介绍:
Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas.
As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.