Asset Details
Do you wish to reserve the book?
Colorimetric determination of ferrous ion via morphology transition of gold nanorods
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Colorimetric determination of ferrous ion via morphology transition of gold nanorods
Do you wish to request the book?
Colorimetric determination of ferrous ion via morphology transition of gold nanorods
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Colorimetric determination of ferrous ion via morphology transition of gold nanorods
2018
Overview
A colorimetric method is described for the determination of ferrous ion (Fe
2+
) with high sensitivity and selectivity. The method is based on catalytic etching of gold nanorod (NR). In an acid condition, Fe
2+
reacts with H
2
O
2
to produce superoxide radical (O
2
•−
) that etches gold NRs from the low energy surface along the longitudinal direction preferentially. As a result, the changes in the absorption spectrum and color of gold NR can be measured and also can be detected visually. Under the optimal conditions, the assay has very low detection limit (13.5 nM) and a linear response in a concentration range of 75 to 1 μM. The method was applied to the determination of Fe
2+
in spiked samples of fetal bovine serum and also transferred to a kind of test stripe for use in fast practical applications. A unique colorimetric sensing method is demonstrated for the colorimetric detection of Fe
2+
, again based on the oxidation of gold nanorods which leads to the blue-shift of the absorption.
Graphical abstract
A unique colorimetric sensing method was shown for the colorimetric detection of Fe
2+
. Fe
2+
reacts with H
2
O
2
to generate superoxide radical that oxidize gold nanorods. This leads to a color change from blue-green to pink.
Publisher
Springer Vienna,Springer,Springer Nature B.V
Subject
