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Thermo-responsive photoluminescent silver clusters/hydrogel nanocomposites for highly sensitive and selective detection of Cr(<scp>vi</scp>)
- Source :
- Journal of Materials Chemistry C. 6:2088-2094
- Publication Year :
- 2018
- Publisher :
- Royal Society of Chemistry (RSC), 2018.
-
Abstract
- Stimuli-sensitive nanocomposites have received special attention because of their potential applications in various fields. In this work, we report a novel thermo-responsive photoluminescent silver clusters/hydrogel nanocomposite with red emission, as a probe for highly sensitive and selective detection of Cr(VI) in aqueous solutions. The hydrogel nanocomposites integrate the advantages of p(NIPAM-co-AAc) hydrogel submicron particles and Ag clusters: the p(NIPAM-co-AAc) hydrogel submicron particles can act as templates for Ag nanoclusters and exhibit thermo-responsive properties. In addition, Ag nanoclusters endow excellent photoluminescent properties to our nanocomposites, resulting in photoluminescent sensors. As a result, we obtained novel thermo-responsive Ag clusters/p(NIPAM-co-AAc) hydrogel nanocomposites through photoreduction process. The photoluminescence (PL) intensity of as-prepared nanocomposites exhibited a linear and reversible response from 2 to 85 °C and displayed a high PL quenching for the sensitive and selective detection of Cr(VI), rather than Cr(III). The limit of detection could reach as low as 1 ppb, which indicates that it is an ideal sensor tool for environmental monitoring, laboratory detections and various other applications.
- Subjects :
- Detection limit
Photoluminescence
Nanocomposite
Aqueous solution
Materials science
02 engineering and technology
General Chemistry
Hydrogel nanocomposites
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Nanoclusters
Highly sensitive
Chemical engineering
Materials Chemistry
0210 nano-technology
Thermo responsive
Subjects
Details
- ISSN :
- 20507534 and 20507526
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Chemistry C
- Accession number :
- edsair.doi...........bfddac627ad699fa911518456a482ecb