Knowledge Management System of Northwest Institute of Plateau Biology, CAS
High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters | |
Qu, Fei ; Chen, Ping ; Zhu, Shuyun ; You, Jinmao | |
2017-01-15 | |
发表期刊 | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY |
摘要 | Ag nanoclusters (Ag NCs) templated by hyperbranched polyethyleneimine (PEI) with different terminal groups and molecular weights had been developed as a special optical sensor for detecting p-nitrophenol (p-NP). When adding p-NP into Ag NCs, an obvious color change from pale yellow to deep yellow could be observed by naked eyes, accompanying with an apparent red-shift of absorption peak, and the reason was attributed to the formation of oxygen anion of p-NP based on the transfer of H+ from p-NP to amine groups of PEI. The molecular weights of template would greatly affect the sensitivity of p-NP. Ag NCs capped by PEI terminated ethylenediamine (EDA) possessed better sensitivity than other Ag NCs, showing good linear range from 5 to 140 mu M with the limit of detection as low as 1.28 mu M. Most importantly, this present system displayed high selectivity toward p-NP even in the presence of other nitrophenols and nitrotoluenes. This reliable method had been successfully applied for the detection of p-NP in real water and soil samples. (C) 2016 Elsevier B.V. All rights reserved. |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/58300 |
专题 | 中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Qu, Fei,Chen, Ping,Zhu, Shuyun,et al. High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2017. |
APA | Qu, Fei,Chen, Ping,Zhu, Shuyun,&You, Jinmao.(2017).High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. |
MLA | Qu, Fei,et al."High selectivity of colorimetric detection of p-nitrophenol based on Ag nanoclusters".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY (2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论