An optical sensor for in situ real-time detection of intermediate products in nitrate reduction reactions†

IF 10.7 2区 材料科学 Q1 CHEMISTRY, PHYSICAL
Ling Lu, Rundong Zhao, Huang Chen, Liang Tan, Dongxu Chen, Le Liu and Jingyu Xi
{"title":"An optical sensor for in situ real-time detection of intermediate products in nitrate reduction reactions†","authors":"Ling Lu, Rundong Zhao, Huang Chen, Liang Tan, Dongxu Chen, Le Liu and Jingyu Xi","doi":"10.1039/D4TA08008D","DOIUrl":null,"url":null,"abstract":"<p >The nitrate reduction reaction (NO<small><sub>3</sub></small>RR) is a promising method for ammonia production, but detecting intermediate NO<small><sub>2</sub></small><small><sup>−</sup></small><em>in situ</em> during the reaction is challenging. We propose a nitrite concentration sensor based on equivalent absorbance change, comprising a light, absorption, and imaging module, with a linear detection range of 0–1.4 mg L<small><sup>−1</sup></small>. After optimizing the absorption module parameters and applying machine learning noise reduction, the detection limit is 0.0116 mg L<small><sup>−1</sup></small>. Using foam copper as the working electrode, we achieved real-time monitoring of nitrite concentration on the electrode surface during NO<small><sub>3</sub></small>RR, validating the sensor's design. When applied to Co Base/Cu electrodes synthesized <em>via</em> localized electrodeposition, the sensor shows significantly lower nitrite concentration in the electrodeposition area compared to the non-electrodeposition area during NO<small><sub>3</sub></small>RR, indicating superior nitrite utilization by cobalt-based materials. This sensor offers a new approach for investigating NO<small><sub>3</sub></small>RR mechanisms and designing catalysts.</p>","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":" 5","pages":" 3518-3527"},"PeriodicalIF":10.7000,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry A","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ta/d4ta08008d","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

The nitrate reduction reaction (NO3RR) is a promising method for ammonia production, but detecting intermediate NO2in situ during the reaction is challenging. We propose a nitrite concentration sensor based on equivalent absorbance change, comprising a light, absorption, and imaging module, with a linear detection range of 0–1.4 mg L−1. After optimizing the absorption module parameters and applying machine learning noise reduction, the detection limit is 0.0116 mg L−1. Using foam copper as the working electrode, we achieved real-time monitoring of nitrite concentration on the electrode surface during NO3RR, validating the sensor's design. When applied to Co Base/Cu electrodes synthesized via localized electrodeposition, the sensor shows significantly lower nitrite concentration in the electrodeposition area compared to the non-electrodeposition area during NO3RR, indicating superior nitrite utilization by cobalt-based materials. This sensor offers a new approach for investigating NO3RR mechanisms and designing catalysts.

Abstract Image

用于硝酸还原反应中间产物现场实时检测的光学传感器
硝酸还原反应(NO3RR)是一种很有前途的制氨方法,但在反应过程中原位检测中间NO2-是一项挑战。我们提出了一种基于等效吸光度变化的亚硝酸盐浓度传感器,包括光、吸收和成像模块,线性检测范围为0-1.4 mg/L。优化吸收模块参数并应用机器学习降噪后,检出限为0.0116 mg/L。采用泡沫铜作为工作电极,实现了NO3RR过程中电极表面亚硝酸盐浓度的实时监测,验证了传感器的设计。当应用于局部电沉积合成的Co Base/Cu电极时,传感器显示,在NO3RR过程中,电沉积区域的亚硝酸盐浓度明显低于非电沉积区域,表明钴基材料对亚硝酸盐的利用率更高。该传感器为研究NO3RR机理和设计催化剂提供了新的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Materials Chemistry A
Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS
CiteScore
19.50
自引率
5.00%
发文量
1892
审稿时长
1.5 months
期刊介绍: The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.
×
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