Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers
An optical fiber localized surface plasmon resonance (LSPR) sensor was proposed and experimentally demonstrated to detect Hg<sup>2+</sup> ions by functionalizing the optical fiber surface with gold nanoparticles (AuNPs) and chitosan (CS)/poly acrylic acid (PAA) bilayers. A flame-brushing...
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/14/4845 |
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| author | Xiujuan Zhong Li Ma Guolu Yin Mengyu Gan Yong Wei |
| author_facet | Xiujuan Zhong Li Ma Guolu Yin Mengyu Gan Yong Wei |
| author_sort | Xiujuan Zhong |
| collection | DOAJ |
| description | An optical fiber localized surface plasmon resonance (LSPR) sensor was proposed and experimentally demonstrated to detect Hg<sup>2+</sup> ions by functionalizing the optical fiber surface with gold nanoparticles (AuNPs) and chitosan (CS)/poly acrylic acid (PAA) bilayers. A flame-brushing technology was proposed to post-process the polydimethyl diallyl ammonium chloride(PDDA)-templated nanoparticles, avoiding the aggregation of AuNPs and achieving well-dispersed AuNPs arrays. LSPR stimulated by the AuNPs is sensitive to changes in the refractive index induced by Hg<sup>2+</sup> ions absorption on the CS/PAA bilayers. Experimental results demonstrated that the LSPR peak wavelength linearly shifts with the concentrations of Hg<sup>2+</sup> ions from 1 to 30 μM with a sensitivity of around 0.51 nm/ppm. The sensor also exhibits good specificity and longtime stability. |
| first_indexed | 2024-03-10T18:28:17Z |
| format | Article |
| id | doaj.art-09cd77232cfd46ecb2df5603b4cd9a28 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:28:17Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-09cd77232cfd46ecb2df5603b4cd9a282023-11-20T06:47:17ZengMDPI AGApplied Sciences2076-34172020-07-011014484510.3390/app10144845Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA BilayersXiujuan Zhong0Li Ma1Guolu Yin2Mengyu Gan3Yong Wei4College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, ChinaKey Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, ChinaCollege of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing 404100, ChinaAn optical fiber localized surface plasmon resonance (LSPR) sensor was proposed and experimentally demonstrated to detect Hg<sup>2+</sup> ions by functionalizing the optical fiber surface with gold nanoparticles (AuNPs) and chitosan (CS)/poly acrylic acid (PAA) bilayers. A flame-brushing technology was proposed to post-process the polydimethyl diallyl ammonium chloride(PDDA)-templated nanoparticles, avoiding the aggregation of AuNPs and achieving well-dispersed AuNPs arrays. LSPR stimulated by the AuNPs is sensitive to changes in the refractive index induced by Hg<sup>2+</sup> ions absorption on the CS/PAA bilayers. Experimental results demonstrated that the LSPR peak wavelength linearly shifts with the concentrations of Hg<sup>2+</sup> ions from 1 to 30 μM with a sensitivity of around 0.51 nm/ppm. The sensor also exhibits good specificity and longtime stability.https://www.mdpi.com/2076-3417/10/14/4845optical fiber sensorlocalized surface plasmon resonancegold nanoparticlesmercury ion sensor detection |
| spellingShingle | Xiujuan Zhong Li Ma Guolu Yin Mengyu Gan Yong Wei Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers Applied Sciences optical fiber sensor localized surface plasmon resonance gold nanoparticles mercury ion sensor detection |
| title | Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers |
| title_full | Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers |
| title_fullStr | Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers |
| title_full_unstemmed | Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers |
| title_short | Hg<sup>2+</sup> Optical Fiber Sensor Based on LSPR with PDDA-Templated AuNPs and CS/PAA Bilayers |
| title_sort | hg sup 2 sup optical fiber sensor based on lspr with pdda templated aunps and cs paa bilayers |
| topic | optical fiber sensor localized surface plasmon resonance gold nanoparticles mercury ion sensor detection |
| url | https://www.mdpi.com/2076-3417/10/14/4845 |
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