化学发光
铈
X射线光电子能谱
检出限
自来水
化学
分析化学(期刊)
线性范围
原位
光化学
核化学
无机化学
化学工程
物理化学
环境化学
色谱法
工程类
环境工程
有机化学
作者
Xiaohan Yuan,Shuguang Yan,Chudong Wei,Yanyan Zhang,Yingying Su,Yi Lv
标识
DOI:10.1016/j.microc.2023.108560
摘要
In this study, nitrogen-doped carbon dots (N-CDs) was observed to strongly amplify the chemiluminescence (CL) intensity of Ce (IV)-Na2S system with an enhancement factor around 55. Possible mechanism was explored and discussed on account of results of free radical scavenger experiments, CL spectra and X-ray photoelectron spectroscopy (XPS), etc. During the CL process, mono-dispersed N-CDs generated in situ catalyzed the production of more 1O2 on its surface and the CL enhancement mainly attributed to the chemiluminescence resonance energy transfer (CRET) between (1O2)2*/Ce (III)* and N-CDs. The new CL system was then developed as a convenient and sensitive platform for H2S detection. The linear range was 20–200 nM and the limit of detection (LOD) was 0.32 nM. The applications in different water samples were proved to have good recovery rate (tap water: 100.46%-109.22%; pool water: 99.91%-102.87%) with satisfactory results.
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