Cargando…
A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres
Fe(3)O(4)@SiO(2) nanospheres with a core–shell structure were synthesized and functionalized with bis(2-pyridylmethyl)amine (BPMA). The photoresponses of the as-obtained Fe(3)O(4)@SiO(2)-BPMA for Cr(3+), Cd(2+), Hg(2+) and Pb(2+) ions were evaluated through irradiation with a 352 nm ultraviolet lamp...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7504229/ https://www.ncbi.nlm.nih.gov/pubmed/32825384 http://dx.doi.org/10.3390/ma13173678 |
_version_ | 1783584576758611968 |
---|---|
author | Xu, Yaohui Deng, Chi Xiao, Zhigang Chen, Chang Luo, Xufeng Zhou, Yang Jiang, Qiang |
author_facet | Xu, Yaohui Deng, Chi Xiao, Zhigang Chen, Chang Luo, Xufeng Zhou, Yang Jiang, Qiang |
author_sort | Xu, Yaohui |
collection | PubMed |
description | Fe(3)O(4)@SiO(2) nanospheres with a core–shell structure were synthesized and functionalized with bis(2-pyridylmethyl)amine (BPMA). The photoresponses of the as-obtained Fe(3)O(4)@SiO(2)-BPMA for Cr(3+), Cd(2+), Hg(2+) and Pb(2+) ions were evaluated through irradiation with a 352 nm ultraviolet lamp, and Fe(3)O(4)@SiO(2)-BPMA exhibited remarkable fluorescence enhancement toward the Cd(2+) ion. The adsorption experiments revealed that Fe(3)O(4)@SiO(2)-BPMA had rapid and effective adsorption toward the Cd(2+) ion. The adsorption reaction was mostly complete within 30 min, the adsorption efficiency reached 99.3%, and the saturated adsorption amount was 342.5 mg/g based on Langmuir linear fitting. Moreover, Fe(3)O(4)@SiO(2)-BPMA displayed superparamagnetic properties with the saturated magnetization of 20.1 emu/g, and its strong magnetic sensitivity made separation simple and feasible. Our efforts in this work provide a potential magnetic functionalized nanosensor for naked-eye identification and adsorption toward the Cd(2+) ion. |
format | Online Article Text |
id | pubmed-7504229 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75042292020-09-24 A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres Xu, Yaohui Deng, Chi Xiao, Zhigang Chen, Chang Luo, Xufeng Zhou, Yang Jiang, Qiang Materials (Basel) Article Fe(3)O(4)@SiO(2) nanospheres with a core–shell structure were synthesized and functionalized with bis(2-pyridylmethyl)amine (BPMA). The photoresponses of the as-obtained Fe(3)O(4)@SiO(2)-BPMA for Cr(3+), Cd(2+), Hg(2+) and Pb(2+) ions were evaluated through irradiation with a 352 nm ultraviolet lamp, and Fe(3)O(4)@SiO(2)-BPMA exhibited remarkable fluorescence enhancement toward the Cd(2+) ion. The adsorption experiments revealed that Fe(3)O(4)@SiO(2)-BPMA had rapid and effective adsorption toward the Cd(2+) ion. The adsorption reaction was mostly complete within 30 min, the adsorption efficiency reached 99.3%, and the saturated adsorption amount was 342.5 mg/g based on Langmuir linear fitting. Moreover, Fe(3)O(4)@SiO(2)-BPMA displayed superparamagnetic properties with the saturated magnetization of 20.1 emu/g, and its strong magnetic sensitivity made separation simple and feasible. Our efforts in this work provide a potential magnetic functionalized nanosensor for naked-eye identification and adsorption toward the Cd(2+) ion. MDPI 2020-08-20 /pmc/articles/PMC7504229/ /pubmed/32825384 http://dx.doi.org/10.3390/ma13173678 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Xu, Yaohui Deng, Chi Xiao, Zhigang Chen, Chang Luo, Xufeng Zhou, Yang Jiang, Qiang A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres |
title | A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres |
title_full | A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres |
title_fullStr | A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres |
title_full_unstemmed | A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres |
title_short | A Nanosensor for Naked-Eye Identification and Adsorption of Cadmium Ion Based on Core–Shell Magnetic Nanospheres |
title_sort | nanosensor for naked-eye identification and adsorption of cadmium ion based on core–shell magnetic nanospheres |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7504229/ https://www.ncbi.nlm.nih.gov/pubmed/32825384 http://dx.doi.org/10.3390/ma13173678 |
work_keys_str_mv | AT xuyaohui ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT dengchi ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT xiaozhigang ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT chenchang ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT luoxufeng ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT zhouyang ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT jiangqiang ananosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT xuyaohui nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT dengchi nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT xiaozhigang nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT chenchang nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT luoxufeng nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT zhouyang nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres AT jiangqiang nanosensorfornakedeyeidentificationandadsorptionofcadmiumionbasedoncoreshellmagneticnanospheres |