{"title":"具有内置驱动 Z 型异质结构的二维/三维 mpg-C3N4/ZnO 纳米笼的简单合成:光催化降解四环素类抗生素并解除复杂水环境的限制","authors":"","doi":"10.1016/j.psep.2024.09.036","DOIUrl":null,"url":null,"abstract":"<div><p>Tetracycline antibiotics have attracted attention due to their difficulty in being degraded by the natural environment. In this work, 2D/3D mesoporous graphitic carbon nitride (mpg-C<sub>3</sub>N<sub>4</sub>)/ zinc oxide (ZnO) hollow nanocage (MCNZH) complexes with Z-scheme heterostructure were prepared for the photocatalytic degradation of tetracycline antibiotics. The catalysts were characterized by SEM, TEM, BET, XRD, FT-IR, EIS, etc. The degradation of tetracycline hydrochloride (40 mg L<sup>–1</sup>) by MCNZH (1.2 g L<sup>–1</sup>) can reach 92.08 %. Further, the energy band structure of the catalysts were calculated and the possible degradation mechanism was proposed. The results showed that ·OH<sup>–</sup> and ·O<sub>2</sub><sup>–</sup> were the main active species, and the internal electric field suppressed the compounding of photogenerated carriers. The catalysts exhibited broad-spectrum degradation of tetracycline antibiotics. Practical sample spiking experiments on soil and river water confirmed its practicability, which provide great significance for the application of the photocatalytic technology in the practical environmental purification.</p></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":null,"pages":null},"PeriodicalIF":6.9000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Simple synthesis of 2D/3D mpg-C3N4/ZnO nanocages with built-in driven Z-scheme heterostructures: Photocatalytic degradation of tetracycline antibiotics and lifting the limitation of the complex water environment\",\"authors\":\"\",\"doi\":\"10.1016/j.psep.2024.09.036\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Tetracycline antibiotics have attracted attention due to their difficulty in being degraded by the natural environment. In this work, 2D/3D mesoporous graphitic carbon nitride (mpg-C<sub>3</sub>N<sub>4</sub>)/ zinc oxide (ZnO) hollow nanocage (MCNZH) complexes with Z-scheme heterostructure were prepared for the photocatalytic degradation of tetracycline antibiotics. The catalysts were characterized by SEM, TEM, BET, XRD, FT-IR, EIS, etc. The degradation of tetracycline hydrochloride (40 mg L<sup>–1</sup>) by MCNZH (1.2 g L<sup>–1</sup>) can reach 92.08 %. Further, the energy band structure of the catalysts were calculated and the possible degradation mechanism was proposed. The results showed that ·OH<sup>–</sup> and ·O<sub>2</sub><sup>–</sup> were the main active species, and the internal electric field suppressed the compounding of photogenerated carriers. The catalysts exhibited broad-spectrum degradation of tetracycline antibiotics. Practical sample spiking experiments on soil and river water confirmed its practicability, which provide great significance for the application of the photocatalytic technology in the practical environmental purification.</p></div>\",\"PeriodicalId\":20743,\"journal\":{\"name\":\"Process Safety and Environmental Protection\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.9000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Process Safety and Environmental Protection\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0957582024011613\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0957582024011613","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
摘要
四环素类抗生素因难以被自然环境降解而备受关注。本研究制备了具有 Z 型异质结构的二维/三维介孔氮化石墨碳(mpg-C3N4)/氧化锌(ZnO)中空纳米笼(MCNZH)复合物,用于光催化降解四环素类抗生素。对催化剂进行了 SEM、TEM、BET、XRD、FT-IR、EIS 等表征。MCNZH (1.2 g L-1)对盐酸四环素(40 mg L-1)的降解率可达 92.08%。此外,还计算了催化剂的能带结构,并提出了可能的降解机理。结果表明,-OH-和-O2-是主要的活性物种,内部电场抑制了光生载流子的复合。催化剂对四环素类抗生素具有广谱降解作用。在土壤和河水中的实际样品添加实验证实了其实用性,这为光催化技术在实际环境净化中的应用提供了重要意义。
Simple synthesis of 2D/3D mpg-C3N4/ZnO nanocages with built-in driven Z-scheme heterostructures: Photocatalytic degradation of tetracycline antibiotics and lifting the limitation of the complex water environment
Tetracycline antibiotics have attracted attention due to their difficulty in being degraded by the natural environment. In this work, 2D/3D mesoporous graphitic carbon nitride (mpg-C3N4)/ zinc oxide (ZnO) hollow nanocage (MCNZH) complexes with Z-scheme heterostructure were prepared for the photocatalytic degradation of tetracycline antibiotics. The catalysts were characterized by SEM, TEM, BET, XRD, FT-IR, EIS, etc. The degradation of tetracycline hydrochloride (40 mg L–1) by MCNZH (1.2 g L–1) can reach 92.08 %. Further, the energy band structure of the catalysts were calculated and the possible degradation mechanism was proposed. The results showed that ·OH– and ·O2– were the main active species, and the internal electric field suppressed the compounding of photogenerated carriers. The catalysts exhibited broad-spectrum degradation of tetracycline antibiotics. Practical sample spiking experiments on soil and river water confirmed its practicability, which provide great significance for the application of the photocatalytic technology in the practical environmental purification.
期刊介绍:
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