Genying Zeng , Guoyu Li , Wenyu Yuan , Jingwen Liu , Ying Wu , Meifang Li , Jiaqin Deng , Xinjiang Hu , Xiaofei Tan
{"title":"银纳米粒子介导的 LSPR 效应和电子传递用于增强 g-C3N5 纳米花的氧化降解过程","authors":"Genying Zeng , Guoyu Li , Wenyu Yuan , Jingwen Liu , Ying Wu , Meifang Li , Jiaqin Deng , Xinjiang Hu , Xiaofei Tan","doi":"10.1016/j.seppur.2024.128484","DOIUrl":null,"url":null,"abstract":"<div><p>The design of photocatalytic system with broad-spectrum response to sunlight and rapid electron transfer is critical for efficient destruction of diverse contaminants in various environmental situations. Herein, self-assembled supramolecular strategy was employed to anchor Ag nanoparticles on the nanoflower-like g-C<sub>3</sub>N<sub>5</sub> surface to construct Schottky-type catalyst (ACN-1) for efficient degradation of organic contaminants. The localized surface plasmon resonance (LSPR) effect significantly improves photocatalytic activity of materials by boosting rapid transfer of interlayer energy and photogenerated electrons and extending the absorption edge of catalysts into near-infrared light region. In actual water samples, ACN-1 entirely eliminated tetracycline (k = 1.0787 min<sup>−1</sup>) within 40 min and maintained high degradation rate (more than 80 %) under various water quality parameters. Furthermore, ACN-1 demonstrated remarkable suitability to microcystin-LR (98.9 %, k = 0.08098 min<sup>−1</sup>), sulfamethoxazole (81.2 %, k = 0.02984 min<sup>−1</sup>), and methylene blue (91.4 %, k = 0.04072 min<sup>−1</sup>). Quenching experiments and ESR tests showed that main active species in system were <sup>1</sup>O<sub>2</sub>, •O<sub>2</sub><sup>−</sup>, and h<sup>+</sup>. Finally, five photodegradation pathways and 26 intermediates of TC were elucidated by combining ESR signals, LC-MS and Fukui index. After photodegradation treatment, the toxicity of solution was drastically reduced and the mineralization reached 62.48 %. This study provides new insights into the design and interaction mechanisms of novel g-C<sub>3</sub>N<sub>5</sub>-based catalysts and effectively contributes to remediation strategies for emerging pollutants in water.</p></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ag nanoparticle-mediated LSPR effect and electron transfer for enhanced oxidative degradation process of g-C3N5 nanoflowers\",\"authors\":\"Genying Zeng , Guoyu Li , Wenyu Yuan , Jingwen Liu , Ying Wu , Meifang Li , Jiaqin Deng , Xinjiang Hu , Xiaofei Tan\",\"doi\":\"10.1016/j.seppur.2024.128484\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The design of photocatalytic system with broad-spectrum response to sunlight and rapid electron transfer is critical for efficient destruction of diverse contaminants in various environmental situations. Herein, self-assembled supramolecular strategy was employed to anchor Ag nanoparticles on the nanoflower-like g-C<sub>3</sub>N<sub>5</sub> surface to construct Schottky-type catalyst (ACN-1) for efficient degradation of organic contaminants. The localized surface plasmon resonance (LSPR) effect significantly improves photocatalytic activity of materials by boosting rapid transfer of interlayer energy and photogenerated electrons and extending the absorption edge of catalysts into near-infrared light region. In actual water samples, ACN-1 entirely eliminated tetracycline (k = 1.0787 min<sup>−1</sup>) within 40 min and maintained high degradation rate (more than 80 %) under various water quality parameters. Furthermore, ACN-1 demonstrated remarkable suitability to microcystin-LR (98.9 %, k = 0.08098 min<sup>−1</sup>), sulfamethoxazole (81.2 %, k = 0.02984 min<sup>−1</sup>), and methylene blue (91.4 %, k = 0.04072 min<sup>−1</sup>). Quenching experiments and ESR tests showed that main active species in system were <sup>1</sup>O<sub>2</sub>, •O<sub>2</sub><sup>−</sup>, and h<sup>+</sup>. Finally, five photodegradation pathways and 26 intermediates of TC were elucidated by combining ESR signals, LC-MS and Fukui index. After photodegradation treatment, the toxicity of solution was drastically reduced and the mineralization reached 62.48 %. This study provides new insights into the design and interaction mechanisms of novel g-C<sub>3</sub>N<sub>5</sub>-based catalysts and effectively contributes to remediation strategies for emerging pollutants in water.</p></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586624022238\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586624022238","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}
Ag nanoparticle-mediated LSPR effect and electron transfer for enhanced oxidative degradation process of g-C3N5 nanoflowers
The design of photocatalytic system with broad-spectrum response to sunlight and rapid electron transfer is critical for efficient destruction of diverse contaminants in various environmental situations. Herein, self-assembled supramolecular strategy was employed to anchor Ag nanoparticles on the nanoflower-like g-C3N5 surface to construct Schottky-type catalyst (ACN-1) for efficient degradation of organic contaminants. The localized surface plasmon resonance (LSPR) effect significantly improves photocatalytic activity of materials by boosting rapid transfer of interlayer energy and photogenerated electrons and extending the absorption edge of catalysts into near-infrared light region. In actual water samples, ACN-1 entirely eliminated tetracycline (k = 1.0787 min−1) within 40 min and maintained high degradation rate (more than 80 %) under various water quality parameters. Furthermore, ACN-1 demonstrated remarkable suitability to microcystin-LR (98.9 %, k = 0.08098 min−1), sulfamethoxazole (81.2 %, k = 0.02984 min−1), and methylene blue (91.4 %, k = 0.04072 min−1). Quenching experiments and ESR tests showed that main active species in system were 1O2, •O2−, and h+. Finally, five photodegradation pathways and 26 intermediates of TC were elucidated by combining ESR signals, LC-MS and Fukui index. After photodegradation treatment, the toxicity of solution was drastically reduced and the mineralization reached 62.48 %. This study provides new insights into the design and interaction mechanisms of novel g-C3N5-based catalysts and effectively contributes to remediation strategies for emerging pollutants in water.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.