等离子体技术在黄铁矿表面构建Brönsted位点高效水解微囊藻毒素- lr

IF 5.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Sciences-china Pub Date : 2025-01-24 DOI:10.1016/j.jes.2025.01.016

Qing Zhang , Yuting He , Jing Zhang , Yadong Li , Yanfen Fang , Yunzhi Tan

{"title":"等离子体技术在黄铁矿表面构建Brönsted位点高效水解微囊藻毒素- lr","authors":"Qing Zhang , Yuting He , Jing Zhang , Yadong Li , Yanfen Fang , Yunzhi Tan","doi":"10.1016/j.jes.2025.01.016","DOIUrl":null,"url":null,"abstract":"<div><div>Enhancing the catalytic hydrolysis efficiency of microcystins (MCs) at ambient temperature has been a persistent challenge in water treatment. We employed N2/low-temperature plasma technology to modify the surface of natural pyrites (NP), and the resulting nitrogen-modified pyrites (NPN) with a nanorod structure and new Fe-Nx sites are more efficient for the hydrolysis of microcystins-LR (MC-LR). Kinetic experiments revealed that NPN exhibited significantly higher hydrolysis activity (kobs = 0.1471 h−1) than NP (0.0914 h−1). Liquid chromatography-mass spectrometry (LC/MS) for the intermediates produced by hydrolyzing MC-LR, in situ attenuated total reflectance Fourier transform infrared spectroscopy (in situ ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) analysis unfolded that the Fe and N atoms of Fe-Nx sites on the surface act of NPN as Lewis acid and Brönsted basic respectively, selectively breaking amide bond on MC-LR molecule. This study demonstrates the effectiveness of plasma technology in modifying mineral materials to enhance their catalytic activity, providing a new method for eliminating MCs in practical water treatment.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 622-632"},"PeriodicalIF":5.9000,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Construction of Brönsted sites on pyrite surface via plasma technology for efficient hydrolysis of microcystins-LR\",\"authors\":\"Qing Zhang , Yuting He , Jing Zhang , Yadong Li , Yanfen Fang , Yunzhi Tan\",\"doi\":\"10.1016/j.jes.2025.01.016\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Enhancing the catalytic hydrolysis efficiency of microcystins (MCs) at ambient temperature has been a persistent challenge in water treatment. We employed N2/low-temperature plasma technology to modify the surface of natural pyrites (NP), and the resulting nitrogen-modified pyrites (NPN) with a nanorod structure and new Fe-Nx sites are more efficient for the hydrolysis of microcystins-LR (MC-LR). Kinetic experiments revealed that NPN exhibited significantly higher hydrolysis activity (kobs = 0.1471 h−1) than NP (0.0914 h−1). Liquid chromatography-mass spectrometry (LC/MS) for the intermediates produced by hydrolyzing MC-LR, in situ attenuated total reflectance Fourier transform infrared spectroscopy (in situ ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) analysis unfolded that the Fe and N atoms of Fe-Nx sites on the surface act of NPN as Lewis acid and Brönsted basic respectively, selectively breaking amide bond on MC-LR molecule. This study demonstrates the effectiveness of plasma technology in modifying mineral materials to enhance their catalytic activity, providing a new method for eliminating MCs in practical water treatment.</div></div>\",\"PeriodicalId\":15788,\"journal\":{\"name\":\"Journal of Environmental Sciences-china\",\"volume\":\"155 \",\"pages\":\"Pages 622-632\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2025-01-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Environmental Sciences-china\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1001074225000233\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Environmental Sciences-china","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1001074225000233","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

摘要

提高微囊藻毒素（MCs）在常温下的催化水解效率一直是水处理领域面临的挑战。采用N2/低温等离子体技术对天然黄铁矿（NP）表面进行修饰，得到具有纳米棒结构和新的Fe-Nx位点的氮修饰黄铁矿（NPN）对微囊藻毒素- lr （MC-LR）的水解效率更高。动力学实验表明，NPN的水解活性（kobs = 0.1471 h−1）显著高于NP （0.0914 h−1）。液相色谱-质谱（LC/MS）分析MC-LR水解产物，原位衰减全反射傅立叶变换红外光谱（in situ ATR-FTIR）和x射线光电子能谱（XPS）分析表明，表面Fe- nx位点的Fe和N原子分别作为Lewis酸和Brönsted碱，选择性地破坏MC-LR分子上的酰胺键。该研究证明了等离子体技术在改性矿物材料以提高其催化活性方面的有效性，为实际水处理中去除MCs提供了一种新的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Construction of Brönsted sites on pyrite surface via plasma technology for efficient hydrolysis of microcystins-LR

查看原文本刊更多论文

Construction of Brönsted sites on pyrite surface via plasma technology for efficient hydrolysis of microcystins-LR

Enhancing the catalytic hydrolysis efficiency of microcystins (MCs) at ambient temperature has been a persistent challenge in water treatment. We employed N₂/low-temperature plasma technology to modify the surface of natural pyrites (NP), and the resulting nitrogen-modified pyrites (NP_N) with a nanorod structure and new Fe-N_x sites are more efficient for the hydrolysis of microcystins-LR (MC-LR). Kinetic experiments revealed that NP_N exhibited significantly higher hydrolysis activity (k_obs = 0.1471 h⁻¹) than NP (0.0914 h⁻¹). Liquid chromatography-mass spectrometry (LC/MS) for the intermediates produced by hydrolyzing MC-LR, in situ attenuated total reflectance Fourier transform infrared spectroscopy (in situ ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) analysis unfolded that the Fe and N atoms of Fe-N_x sites on the surface act of NP_N as Lewis acid and Brönsted basic respectively, selectively breaking amide bond on MC-LR molecule. This study demonstrates the effectiveness of plasma technology in modifying mineral materials to enhance their catalytic activity, providing a new method for eliminating MCs in practical water treatment.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Environmental Sciences-china 环境科学-环境科学

CiteScore

13.70

自引率

0.00%

发文量

6354

审稿时长

2.6 months

期刊介绍： The Journal of Environmental Sciences is an international journal started in 1989. The journal is devoted to publish original, peer-reviewed research papers on main aspects of environmental sciences, such as environmental chemistry, environmental biology, ecology, geosciences and environmental physics. Appropriate subjects include basic and applied research on atmospheric, terrestrial and aquatic environments, pollution control and abatement technology, conservation of natural resources, environmental health and toxicology. Announcements of international environmental science meetings and other recent information are also included.