Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II)
A poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero charges, infrared spectroscopy, thermogravimetric an...
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MDPI AG
2020-10-01
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| Series: | Biosensors |
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| Online Access: | https://www.mdpi.com/2079-6374/10/10/147 |
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| author | Luis F. Chazaro-Ruiz Miguel Olvera-Sosa Gabriela Vidal J. Rene Rangel-Mendez Gabriela Palestino Fatima Perez Wei Zhang |
| author_facet | Luis F. Chazaro-Ruiz Miguel Olvera-Sosa Gabriela Vidal J. Rene Rangel-Mendez Gabriela Palestino Fatima Perez Wei Zhang |
| author_sort | Luis F. Chazaro-Ruiz |
| collection | DOAJ |
| description | A poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero charges, infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The possible use of the PAA-co-IA/NaOH/B-MWCNT hydrogel as an electrode modifier and pre-concentrator agent for Cd(II) sensing purposes was then evaluated using carbon paste electrodes via differential pulse voltammetry. The presence of the B-MWCNTs in the hydrogel matrix decreased its degree of swelling, stabilized the structure of the swollen gel, and favored the detection of 3 ppb Cd(II), which is comparable to the World Health Organization’s allowable maximum value in drinking water. A calibration curve was obtained in the concentration range of 2.67 × 10<sup>−8</sup> to 6.23 × 10<sup>−7</sup> M (i.e., 3 and 70 ppb) to determine a limit of detection (LOD) of 19.24 μgL<sup>−1</sup> and a sensitivity of 0.15 μC ppb<sup>−1</sup>. Also, the Zn(II), Hg(II), Pb(II) and Cu(II) ions interfered moderately on the determination of Cd(II). |
| first_indexed | 2024-03-10T15:31:31Z |
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| institution | Directory Open Access Journal |
| issn | 2079-6374 |
| language | English |
| last_indexed | 2024-03-10T15:31:31Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biosensors |
| spelling | doaj.art-5e393de228c44f3b82a2d0d5875330d52023-11-20T17:36:56ZengMDPI AGBiosensors2079-63742020-10-01101014710.3390/bios10100147Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II)Luis F. Chazaro-Ruiz0Miguel Olvera-Sosa1Gabriela Vidal2J. Rene Rangel-Mendez3Gabriela Palestino4Fatima Perez5Wei Zhang6División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Manuel Nava No. 6, San Luis Potosí C.P. 78210, MexicoDivisión de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, MexicoDivisión de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Manuel Nava No. 6, San Luis Potosí C.P. 78210, MexicoCONACYT—Instituto Potosino de Investigación Científica y Tecnológica, A.C. (IPICYT), Camino a la Presa San José 2055, Lomas 4ª Sección, San Luis Potosí C.P. 78216, SLP, MexicoCollege of Engineering, Bay Campus, Swansea University, Swansea SA1 8EN, UKA poly(acrylic acid-co-itaconic acid) (PAA-co-IA)/NaOH hydrogel containing bamboo-type multiwall carbon nanotubes (B-MWCNTs) doped with nitrogen (PAA-co-IA/NaOH/B-MWCNTs) was synthesized and characterized by SEM, absorption of water, point of zero charges, infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. The possible use of the PAA-co-IA/NaOH/B-MWCNT hydrogel as an electrode modifier and pre-concentrator agent for Cd(II) sensing purposes was then evaluated using carbon paste electrodes via differential pulse voltammetry. The presence of the B-MWCNTs in the hydrogel matrix decreased its degree of swelling, stabilized the structure of the swollen gel, and favored the detection of 3 ppb Cd(II), which is comparable to the World Health Organization’s allowable maximum value in drinking water. A calibration curve was obtained in the concentration range of 2.67 × 10<sup>−8</sup> to 6.23 × 10<sup>−7</sup> M (i.e., 3 and 70 ppb) to determine a limit of detection (LOD) of 19.24 μgL<sup>−1</sup> and a sensitivity of 0.15 μC ppb<sup>−1</sup>. Also, the Zn(II), Hg(II), Pb(II) and Cu(II) ions interfered moderately on the determination of Cd(II).https://www.mdpi.com/2079-6374/10/10/147hydrogelcopolymercarbon nanotubescompositecarbon–paste electrodecadmium (II) detection |
| spellingShingle | Luis F. Chazaro-Ruiz Miguel Olvera-Sosa Gabriela Vidal J. Rene Rangel-Mendez Gabriela Palestino Fatima Perez Wei Zhang Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II) Biosensors hydrogel copolymer carbon nanotubes composite carbon–paste electrode cadmium (II) detection |
| title | Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II) |
| title_full | Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II) |
| title_fullStr | Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II) |
| title_full_unstemmed | Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II) |
| title_short | Synthesis of Bamboo-like Multiwall Carbon Nanotube–Poly(Acrylic Acid-co-Itaconic Acid)/NaOH Composite Hydrogel and its Potential Application for Electrochemical Detection of Cadmium(II) |
| title_sort | synthesis of bamboo like multiwall carbon nanotube poly acrylic acid co itaconic acid naoh composite hydrogel and its potential application for electrochemical detection of cadmium ii |
| topic | hydrogel copolymer carbon nanotubes composite carbon–paste electrode cadmium (II) detection |
| url | https://www.mdpi.com/2079-6374/10/10/147 |
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