2021
DOI: 10.1016/j.snb.2020.129382
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An ultra-sensitive colorimetric detection of Ag ions based on etching AuNP@MnO2 nanoparticles with glutathione by using dark field optical microscopy

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Cited by 25 publications
(6 citation statements)
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“…The LOD is calculated according to 3δ/ S . δ represents the standard deviation of the signal responses for blank samples, and S represents the slope of the standard curve. The results of the all-in-one peptide based sensor were compared with other previously reported sensors for Van detection (shown in Table S1). The all-in-one peptide based sensor not only has special antifouling performance but also has lower LOD.…”
Section: Resultsmentioning
confidence: 99%
“…The LOD is calculated according to 3δ/ S . δ represents the standard deviation of the signal responses for blank samples, and S represents the slope of the standard curve. The results of the all-in-one peptide based sensor were compared with other previously reported sensors for Van detection (shown in Table S1). The all-in-one peptide based sensor not only has special antifouling performance but also has lower LOD.…”
Section: Resultsmentioning
confidence: 99%
“…CTAB-BGNPs were prepared according to previous literature, and Cit-GNPs were prepared according to our previous method . BGNPs was prepared by sodium borohydride reduction method with minor modification (Supporting Information).…”
Section: Methodsmentioning
confidence: 99%
“…Recently, an ultrasensitive colorimetric detection approach based on anti-etching of AuNP@MnO 2 was realized for sensing Ag + . 71 This is based on the principle that GSH can reduce the MnO 2 shell, present on the AuNP, into Mn 2+ , which leads to a prominent change in the absorption peak from 528 to 572 nm. However, in the presence of Ag + , the GSH preferably binds with Ag + ions and thereby prevents the etching of the MnO 2 shell from AuNP@MnO 2 , resulting in no or fewer changes in the absorption peak.…”
Section: Etching Off/anti-etchingmentioning
confidence: 99%