电催化脱氯中钯纳米颗粒抗nom中毒性能的预嵌入策略

IF 5.5 3区 材料科学 Q1 ELECTROCHEMISTRY
Linpiao Cheng, Shuyue Liu, Yinan Liu, Xiangyi Tang, Mue Tang, Xinhua Xu, Xiaoshu Lv
{"title":"电催化脱氯中钯纳米颗粒抗nom中毒性能的预嵌入策略","authors":"Linpiao Cheng, Shuyue Liu, Yinan Liu, Xiangyi Tang, Mue Tang, Xinhua Xu, Xiaoshu Lv","doi":"10.1016/j.electacta.2025.145642","DOIUrl":null,"url":null,"abstract":"Electrocatalytic hydrodechlorination (EHDC) represents a sustainable approach to detoxifying the chlorinated organic pollutants (COPs). However, electrodes often suffer from fouling due to the ubiquitous natural organic matters (NOM) in surface water bodies. Herein we demonstrated that pre-mixing humic acid (HA) with palladium nanoparticles (Pd NPs) is an ingenious approach to address this issue. The introduction of HA improved dispersion of Pd NPs, enhanced surface hydrophilicity to promote H* generation, and increased electrostatic repulsion and steric-hinerance against NOM in solution. As a result, the as-synthesized HA<sub>0.2</sub>-Pd electrode exhibits significantly improved EHDC performance and anti-NOM poisoning ability. In the batch experiment, the HA<sub>0.2</sub>-Pd NPs achieved removal efficiencies of 91.3 and 80.8% respectively, for treating 50.0 mg L<sup>−1</sup> of 2,4-dichlorophenol (2,4-DCP, a probe COP) from contaminated water in the absence or presence of 20 mg L<sup>−1</sup> HA (representative of NOM) at -0.85 V <em>vs.</em> Ag/AgCl. Compared to that, the pure Pd/C electrode experienced a marked efficacy decline from 82.9 to 56.5% in the presence of HA. Moreover, the HA<sub>0.2</sub>-Pd/C electrode maintained a steady efficiency above 92.0% over 12 h EHDC in a continuous-flow cell, while only 60.0% for the Pd/C electrode. When subjected to contaminated natural water, the HA<sub>0.2</sub>-Pd/C electrode afforded an EHDC efficiency of 75.4%, significantly surpassing the 39.4% efficiency of Pd/C electrode.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"34 1","pages":""},"PeriodicalIF":5.5000,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Pre-embedded Strategy for Anti-NOM Poisoning Performance of Palladium Nanoparticles in Electrocatalytic Dechlorination\",\"authors\":\"Linpiao Cheng, Shuyue Liu, Yinan Liu, Xiangyi Tang, Mue Tang, Xinhua Xu, Xiaoshu Lv\",\"doi\":\"10.1016/j.electacta.2025.145642\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Electrocatalytic hydrodechlorination (EHDC) represents a sustainable approach to detoxifying the chlorinated organic pollutants (COPs). However, electrodes often suffer from fouling due to the ubiquitous natural organic matters (NOM) in surface water bodies. Herein we demonstrated that pre-mixing humic acid (HA) with palladium nanoparticles (Pd NPs) is an ingenious approach to address this issue. The introduction of HA improved dispersion of Pd NPs, enhanced surface hydrophilicity to promote H* generation, and increased electrostatic repulsion and steric-hinerance against NOM in solution. As a result, the as-synthesized HA<sub>0.2</sub>-Pd electrode exhibits significantly improved EHDC performance and anti-NOM poisoning ability. In the batch experiment, the HA<sub>0.2</sub>-Pd NPs achieved removal efficiencies of 91.3 and 80.8% respectively, for treating 50.0 mg L<sup>−1</sup> of 2,4-dichlorophenol (2,4-DCP, a probe COP) from contaminated water in the absence or presence of 20 mg L<sup>−1</sup> HA (representative of NOM) at -0.85 V <em>vs.</em> Ag/AgCl. Compared to that, the pure Pd/C electrode experienced a marked efficacy decline from 82.9 to 56.5% in the presence of HA. Moreover, the HA<sub>0.2</sub>-Pd/C electrode maintained a steady efficiency above 92.0% over 12 h EHDC in a continuous-flow cell, while only 60.0% for the Pd/C electrode. When subjected to contaminated natural water, the HA<sub>0.2</sub>-Pd/C electrode afforded an EHDC efficiency of 75.4%, significantly surpassing the 39.4% efficiency of Pd/C electrode.\",\"PeriodicalId\":305,\"journal\":{\"name\":\"Electrochimica Acta\",\"volume\":\"34 1\",\"pages\":\"\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-01-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrochimica Acta\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.electacta.2025.145642\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.electacta.2025.145642","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0

摘要

电催化氢脱氯(EHDC)代表了一种可持续的方法来解毒氯化有机污染物(cop)。然而,由于地表水中普遍存在的天然有机物质(NOM),电极经常受到污染。在这里,我们证明了将腐植酸(HA)与钯纳米粒子(Pd NPs)预混合是解决这一问题的一种巧妙方法。HA的引入改善了Pd NPs的分散性,增强了表面亲水性以促进H*的生成,并增加了溶液中对NOM的静电斥力和空间阻抗。结果表明,合成的HA0.2-Pd电极具有显著提高的EHDC性能和抗nom中毒能力。在批量实验中,在不含或存在20 mg L - 1 HA (NOM的代表)的情况下,在-0.85 V /Ag /AgCl下,HA0.2-Pd NPs对污染水中50.0 mg L - 1 2,4-二氯苯酚(2,4- dcp,一种探针COP)的去除率分别为91.3和80.8%。相比之下,在HA的存在下,纯Pd/C电极的效率从82.9%下降到56.5%。在连续流动电池中,HA0.2-Pd/C电极在12 h EHDC内的效率稳定在92.0%以上,而Pd/C电极的效率仅为60.0%。当自然水体受到污染时,HA0.2-Pd/C电极的EHDC效率为75.4%,显著超过Pd/C电极的39.4%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Pre-embedded Strategy for Anti-NOM Poisoning Performance of Palladium Nanoparticles in Electrocatalytic Dechlorination

Pre-embedded Strategy for Anti-NOM Poisoning Performance of Palladium Nanoparticles in Electrocatalytic Dechlorination
Electrocatalytic hydrodechlorination (EHDC) represents a sustainable approach to detoxifying the chlorinated organic pollutants (COPs). However, electrodes often suffer from fouling due to the ubiquitous natural organic matters (NOM) in surface water bodies. Herein we demonstrated that pre-mixing humic acid (HA) with palladium nanoparticles (Pd NPs) is an ingenious approach to address this issue. The introduction of HA improved dispersion of Pd NPs, enhanced surface hydrophilicity to promote H* generation, and increased electrostatic repulsion and steric-hinerance against NOM in solution. As a result, the as-synthesized HA0.2-Pd electrode exhibits significantly improved EHDC performance and anti-NOM poisoning ability. In the batch experiment, the HA0.2-Pd NPs achieved removal efficiencies of 91.3 and 80.8% respectively, for treating 50.0 mg L−1 of 2,4-dichlorophenol (2,4-DCP, a probe COP) from contaminated water in the absence or presence of 20 mg L−1 HA (representative of NOM) at -0.85 V vs. Ag/AgCl. Compared to that, the pure Pd/C electrode experienced a marked efficacy decline from 82.9 to 56.5% in the presence of HA. Moreover, the HA0.2-Pd/C electrode maintained a steady efficiency above 92.0% over 12 h EHDC in a continuous-flow cell, while only 60.0% for the Pd/C electrode. When subjected to contaminated natural water, the HA0.2-Pd/C electrode afforded an EHDC efficiency of 75.4%, significantly surpassing the 39.4% efficiency of Pd/C electrode.
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
Electrochimica Acta
Electrochimica Acta 工程技术-电化学
CiteScore
11.30
自引率
6.10%
发文量
1634
审稿时长
41 days
期刊介绍: Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信