气候变化领域集成服务门户(CCPortal): Gold nanorods assisted silver mirror reaction for consecutive color change based on-site visual semi-quantification of indoor formaldehyde

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DOI	10.1016/j.atmosenv.2020.118101
	Gold nanorods assisted silver mirror reaction for consecutive color change based on-site visual semi-quantification of indoor formaldehyde
	Wang Y.; Guan M.; Yan X.; Lei Y.; Shen X.; Luo L.; He H.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	In the present study, a multicolor conversion strategy based on gold nanorods (AuNRs) assisted silver mirror reaction is developed for visual quantification of formaldehyde (HCHO). The method involves the silver deposition on the surface of AuNRs via the reduction reaction of Tollens' reagent in the presence of HCHO. The peak shifts of the longitudinal localized surface plasmon resonance (LSPR) and color variations of AuNRs solution are sensitive to the thickness of silver layer deposited on the surface of AuNRs. Under the optimized conditions, there is a good linear relationship between the peak shift and the concentration of HCHO (for both liquid sample and gas sample) in a wide range of concentration, thus an AuNRs based colorimetric assay for quantitative analysis of HCHO is established. Moreover, a series of consecutive color changes (from mauve to dusty blue, nattier blue, blue, mazarine blue, dark green, clay bank and finally orange red) responding to the presence and amount of HCHO enables visual semi-quantitative determination of HCHO within 15 min, and the clearly discernible dosage scale is as low as 0.10 μM. This assay exhibits desirable selectivity for HCHO over several common interfering organic molecular species and potential gas interferents, which has been successfully applied to measure the concentration of HCHO indoor. © 2020 Elsevier Ltd
关键词	AuNRs HCHO indoor On-site visual semi-quantification Silver mirror reaction
语种	英语
scopus关键词	Chemical reactions; Color; Colorimetric analysis; Colorimetry; Formaldehyde; Gold; Gold Nanorods; Mirrors; Nanorods; Plasmons; Surface plasmon resonance; Colorimetric assays; Gold nanorods (AuNRs); Linear relationships; Localized surface plasmon resonance; Optimized conditions; Quantitative determinations; Reduction reaction; Silver mirror reactions; Gold compounds; formaldehyde; gold nanorod; silver; chemical reaction; color; formaldehyde; gold; indoor air; silver; visual analysis; absorption spectroscopy; air sampling; Article; color; colorimetry; concentration (parameter); controlled study; gas analysis; indoor air pollution; intermethod comparison; priority journal; quantitative analysis; reaction duration (chemistry); reaction optimization; surface plasmon resonance; surface property; synthesis; temperature; vision; Citrus sinensis
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248679
作者单位	Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
推荐引用方式 GB/T 7714	Wang Y.,Guan M.,Yan X.,et al. Gold nanorods assisted silver mirror reaction for consecutive color change based on-site visual semi-quantification of indoor formaldehyde[J],2021,246.
APA	Wang Y..,Guan M..,Yan X..,Lei Y..,Shen X..,...&He H..(2021).Gold nanorods assisted silver mirror reaction for consecutive color change based on-site visual semi-quantification of indoor formaldehyde.ATMOSPHERIC ENVIRONMENT,246.
MLA	Wang Y.,et al."Gold nanorods assisted silver mirror reaction for consecutive color change based on-site visual semi-quantification of indoor formaldehyde".ATMOSPHERIC ENVIRONMENT 246(2021).