A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis
We develop an electrochemical sensor by using 2D-transition metal dichalcogenides (TMD), specifically MoS2, and nanoparticles stabilized with cucurbit[8]uril (CB[8]) incorporated together with them. Two different nanoparticles are assayed: diamond nanoparticles (DNPs) and gold nanoparticles (AuNp)....
| Authors: | ; ; ; ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2021 |
| Country: | España |
| Institution: | Universidad Autónoma de Madrid |
| Repository: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Language: | English |
| OAI Identifier: | oai:repositorio.uam.es:10486/710215 |
| Online Access: | http://hdl.handle.net/10486/710215 https://dx.doi.org/10.1016/j.aca.2021.338940 |
| Access Level: | Open access |
| Keyword: | Cucurbit[8]uril Diamond nanoparticles Methyl viologen Molybdenum disulphide Supramolecular chemistry Química |
| _version_ | 1878733755837841408 |
|---|---|
| author | Blanco Gil, Elías |
| author2 | Pozo Vázquez, María del Petit Domínguez, María Dolores Casero Junquera, María Elena Quintana Mani, María del Carmen Rocha, Laura Vázquez, Luis |
| author2_role | author author author author author author |
| author_browse | Blanco Gil, Elías Casero Junquera, María Elena Petit Domínguez, María Dolores Pozo Vázquez, María del Quintana Mani, María del Carmen Rocha, Laura Vázquez, Luis |
| author_facet | Blanco Gil, Elías Pozo Vázquez, María del Petit Domínguez, María Dolores Casero Junquera, María Elena Quintana Mani, María del Carmen Rocha, Laura Vázquez, Luis |
| author_role | author |
| collection | Biblos-e Archivo. Repositorio Institucional de la UAM |
| description | We develop an electrochemical sensor by using 2D-transition metal dichalcogenides (TMD), specifically MoS2, and nanoparticles stabilized with cucurbit[8]uril (CB[8]) incorporated together with them. Two different nanoparticles are assayed: diamond nanoparticles (DNPs) and gold nanoparticles (AuNp). 0D materials, together with TMD, provide increased conductivity and active surface while the macrocycle CB[8] affords selectivity towards the guest methyl viologen (MV2+), also named paraquat. Glassy Carbon (GC) electrodes are modified by drop-casting of suspensions of MoS2, followed by either a CB[8]-DNPs hybrid dispersion or a CB[8]-AuNp suspension. Atomic force microscopy is employed for the morphological characterization of the electrochemical sensor surface while cyclic voltammetry and electrochemical impedance spectroscopy techniques allow the electrochemical characterization of the sensor. The well-stablished signals of CB[8]-encapsulated MV2+ arise in voltammetric measurements when the macrocycle modifies the 0D-materials. Once the sensor construction and differential pulse voltammetry parameters have been optimized for quantification purposes, calibration procedures are performed with the platform GC/MoS2/CB[8]-DNPs. This sensing platform shows linear relations between peak intensity and the MV2+ concentration in the linear concentration range of (0.73–8.0) · 10−6 M with a limit of detection of 2.2 · 10−7 M. Analyses of river water samples fortified with MV2+ at the μM level shows recoveries of 100% with RSD values of 6.4% (n = 3) |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_5c593fedcebfce97a16576be17ed00a2 |
| institution | Universidad Autónoma de Madrid |
| instname_str | Universidad Autónoma de Madrid |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:repositorio.uam.es:10486/710215 |
| publishDate | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | Biblos-e Archivo. Repositorio Institucional de la UAM |
| spelling | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis Blanco Gil, Elías Pozo Vázquez, María del Petit Domínguez, María Dolores Casero Junquera, María Elena Quintana Mani, María del Carmen Rocha, Laura Vázquez, Luis Cucurbit[8]uril Diamond nanoparticles Methyl viologen Molybdenum disulphide Supramolecular chemistry Química We develop an electrochemical sensor by using 2D-transition metal dichalcogenides (TMD), specifically MoS2, and nanoparticles stabilized with cucurbit[8]uril (CB[8]) incorporated together with them. Two different nanoparticles are assayed: diamond nanoparticles (DNPs) and gold nanoparticles (AuNp). 0D materials, together with TMD, provide increased conductivity and active surface while the macrocycle CB[8] affords selectivity towards the guest methyl viologen (MV2+), also named paraquat. Glassy Carbon (GC) electrodes are modified by drop-casting of suspensions of MoS2, followed by either a CB[8]-DNPs hybrid dispersion or a CB[8]-AuNp suspension. Atomic force microscopy is employed for the morphological characterization of the electrochemical sensor surface while cyclic voltammetry and electrochemical impedance spectroscopy techniques allow the electrochemical characterization of the sensor. The well-stablished signals of CB[8]-encapsulated MV2+ arise in voltammetric measurements when the macrocycle modifies the 0D-materials. Once the sensor construction and differential pulse voltammetry parameters have been optimized for quantification purposes, calibration procedures are performed with the platform GC/MoS2/CB[8]-DNPs. This sensing platform shows linear relations between peak intensity and the MV2+ concentration in the linear concentration range of (0.73–8.0) · 10−6 M with a limit of detection of 2.2 · 10−7 M. Analyses of river water samples fortified with MV2+ at the μM level shows recoveries of 100% with RSD values of 6.4% (n = 3) The authors acknowledge financial support from the Spanish MINECO ( MAT2017-85089-C2-1-R , MAT2017-85089-C2-2-R , PID2020-113142RB-C21 , PID2020-113142RB-C22 ) and the Comunidad Autónoma de Madrid ( P2018/NMT-4349 , TRANSNANOAVANSENS-CM). Elsevier http://hdl.handle.net/10486/710215 https://dx.doi.org/10.1016/j.aca.2021.338940 |
| spellingShingle | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis Blanco Gil, Elías Cucurbit[8]uril Diamond nanoparticles Methyl viologen Molybdenum disulphide Supramolecular chemistry Química |
| title | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis |
| title_full | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis |
| title_fullStr | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis |
| title_full_unstemmed | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis |
| title_short | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis |
| title_sort | A supramolecular hybrid sensor based on cucurbit[8]uril, 2D-molibdenum disulphide and diamond nanoparticles towards methyl viologen analysis |
| topic | Cucurbit[8]uril Diamond nanoparticles Methyl viologen Molybdenum disulphide Supramolecular chemistry Química |
| topic_facet | Cucurbit[8]uril Diamond nanoparticles Methyl viologen Molybdenum disulphide Supramolecular chemistry Química |
| url | http://hdl.handle.net/10486/710215 https://dx.doi.org/10.1016/j.aca.2021.338940 |