{"title":"Selective removal of microcystin from eutrophic water by a nanobody-metal hybrid photocatalyst","authors":"Xiao Dai, Qi Chen, Jia Hu, Yunkai Fan, Ying Xiong, Xiaoyang Li","doi":"10.1016/j.cej.2025.159993","DOIUrl":null,"url":null,"abstract":"Microcystin-LR (MC-LR) is a major contaminant in food and the environment, posing a significant public health risk. However, targeted degradation of MC-LR in complex systems remains a challenging task. In this study, we rationally designed a hierarchically structured nanobody-metal hybrid photocatalyst with both high affinity for MC-LR and excellent photocatalytic activity. Due to the synergistic and proximity effects between nanobody and photocatalyst, the degradation efficiency of Ag/AgCl/BSA-Nb hybrid catalyst achieved a degradation rate 2.3 times higher than that of Ag/AgCl/BSA in eutrophic water. Nearly 100% degradation of MC-LR was achieved within 30 min under visible light irradiation. The degradation pathways of MC-LR were analyzed using UPLC-Q-TOF MS. The hepatotoxicity of the MC-LR transformation products was significantly reduced compared to that of MC-LR. Ag/AgCl/BSA-Nb demonstrated excellent reusability and a good industrial application prospect.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":13.2000,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.cej.2025.159993","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Microcystin-LR (MC-LR) is a major contaminant in food and the environment, posing a significant public health risk. However, targeted degradation of MC-LR in complex systems remains a challenging task. In this study, we rationally designed a hierarchically structured nanobody-metal hybrid photocatalyst with both high affinity for MC-LR and excellent photocatalytic activity. Due to the synergistic and proximity effects between nanobody and photocatalyst, the degradation efficiency of Ag/AgCl/BSA-Nb hybrid catalyst achieved a degradation rate 2.3 times higher than that of Ag/AgCl/BSA in eutrophic water. Nearly 100% degradation of MC-LR was achieved within 30 min under visible light irradiation. The degradation pathways of MC-LR were analyzed using UPLC-Q-TOF MS. The hepatotoxicity of the MC-LR transformation products was significantly reduced compared to that of MC-LR. Ag/AgCl/BSA-Nb demonstrated excellent reusability and a good industrial application prospect.
期刊介绍：
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
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