Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups
This work presents the design and optimization of a new Cr(VI)-selective electrode. The new sensor is based on modifying a glassy carbon electrode with carbon quantum dots, ß-cyclodextrin, and carbon disulfide. The carbon quantum dots aided the electrical properties of the glassy carbon by improving...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Sensors and Actuators Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666053924000420 |
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| author | Manuel Ochoa-Pérez Jorge Juárez-Gómez Sarahy Meneses-Aparicio Dafne Sarahia Guzmán-Hernández Víctor Lara Alberto Rojas-Hernández María Teresa Ramírez-Silva |
| author_facet | Manuel Ochoa-Pérez Jorge Juárez-Gómez Sarahy Meneses-Aparicio Dafne Sarahia Guzmán-Hernández Víctor Lara Alberto Rojas-Hernández María Teresa Ramírez-Silva |
| author_sort | Manuel Ochoa-Pérez |
| collection | DOAJ |
| description | This work presents the design and optimization of a new Cr(VI)-selective electrode. The new sensor is based on modifying a glassy carbon electrode with carbon quantum dots, ß-cyclodextrin, and carbon disulfide. The carbon quantum dots aided the electrical properties of the glassy carbon by improving charge transfer; the electropolymerization of ß-cyclodextrin resulted in a polymeric membrane that functions as a recognition element when modified by adding sulfur donor groups to its structure. Modifying the membrane with sulfur atoms gave the sensor excellent selectivity toward Cr(VI) ions. The electrode synthesis was optimized using a 23 factorial design; the factors studied were pH, the number of cycles in the electropolymerization, and the presence or absence of carbon nanoparticles. Eight different electrodes were constructed, and their potentiometric response to different concentrations of Cr(VI) was evaluated for all of them. The analysis of variance of the experimental design found no significant effect of any factor on the response. However, it suggests a strong interaction between the three factors studied. The sensor that presented the best analytical parameters was synthesized at pH 5 and 50 consecutive cycles in the presence of carbon quantum dots. This new electrode, with its response times of 40 s at different concentrations of the metal ion, exhibiting a slope of (66.0 ± 2.1) mV decade−1 and a detection limit of (5.2 ± 0.1)x10−7 mol L−1, can be used at pH between 0 and 3 without the effect of hydronium ions. The proposed electrode has good reproducibility and excellent selectivity against various metal ions and has significant advantages over other analysis methods. Its cost, ease of construction, easy handling, ease of operation, ease of storage and transportation, as well as good performance, short response time, and high selectivity make this electrode a valuable tool for easy, fast, and reliable monitoring of Cr(VI) in water samples, contributing to the safety and health of our environment. |
| format | Article |
| id | doaj-art-2dfc40fdeb6747969f9a59bbd0c0dd1c |
| institution | Kabale University |
| issn | 2666-0539 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensors and Actuators Reports |
| spelling | doaj-art-2dfc40fdeb6747969f9a59bbd0c0dd1c2024-11-15T06:15:00ZengElsevierSensors and Actuators Reports2666-05392024-12-018100226Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groupsManuel Ochoa-Pérez0Jorge Juárez-Gómez1Sarahy Meneses-Aparicio2Dafne Sarahia Guzmán-Hernández3Víctor Lara4Alberto Rojas-Hernández5María Teresa Ramírez-Silva6Departamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, MéxicoDepartamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, México; Corresponding author.Departamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, MéxicoDepartamento de Química, CONAHCYT-Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, MéxicoDepartamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, MéxicoDepartamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, MéxicoDepartamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Av. San Rafael Atlixco #186, Col. Vicentina, D.F., C.P., 09340, MéxicoThis work presents the design and optimization of a new Cr(VI)-selective electrode. The new sensor is based on modifying a glassy carbon electrode with carbon quantum dots, ß-cyclodextrin, and carbon disulfide. The carbon quantum dots aided the electrical properties of the glassy carbon by improving charge transfer; the electropolymerization of ß-cyclodextrin resulted in a polymeric membrane that functions as a recognition element when modified by adding sulfur donor groups to its structure. Modifying the membrane with sulfur atoms gave the sensor excellent selectivity toward Cr(VI) ions. The electrode synthesis was optimized using a 23 factorial design; the factors studied were pH, the number of cycles in the electropolymerization, and the presence or absence of carbon nanoparticles. Eight different electrodes were constructed, and their potentiometric response to different concentrations of Cr(VI) was evaluated for all of them. The analysis of variance of the experimental design found no significant effect of any factor on the response. However, it suggests a strong interaction between the three factors studied. The sensor that presented the best analytical parameters was synthesized at pH 5 and 50 consecutive cycles in the presence of carbon quantum dots. This new electrode, with its response times of 40 s at different concentrations of the metal ion, exhibiting a slope of (66.0 ± 2.1) mV decade−1 and a detection limit of (5.2 ± 0.1)x10−7 mol L−1, can be used at pH between 0 and 3 without the effect of hydronium ions. The proposed electrode has good reproducibility and excellent selectivity against various metal ions and has significant advantages over other analysis methods. Its cost, ease of construction, easy handling, ease of operation, ease of storage and transportation, as well as good performance, short response time, and high selectivity make this electrode a valuable tool for easy, fast, and reliable monitoring of Cr(VI) in water samples, contributing to the safety and health of our environment.http://www.sciencedirect.com/science/article/pii/S2666053924000420ISECr(VI)Selectivityß-CDElectropolymerization |
| spellingShingle | Manuel Ochoa-Pérez Jorge Juárez-Gómez Sarahy Meneses-Aparicio Dafne Sarahia Guzmán-Hernández Víctor Lara Alberto Rojas-Hernández María Teresa Ramírez-Silva Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups Sensors and Actuators Reports ISE Cr(VI) Selectivity ß-CD Electropolymerization |
| title | Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups |
| title_full | Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups |
| title_fullStr | Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups |
| title_full_unstemmed | Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups |
| title_short | Design and optimization of a Cr(VI)-Selective Electrode based on a polymeric ß-cyclodextrin membrane modified with sulfur donor groups |
| title_sort | design and optimization of a cr vi selective electrode based on a polymeric ss cyclodextrin membrane modified with sulfur donor groups |
| topic | ISE Cr(VI) Selectivity ß-CD Electropolymerization |
| url | http://www.sciencedirect.com/science/article/pii/S2666053924000420 |
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