1
|
Jiménez-Duro M, Martínez-Periñán E, Martínez-Fernández M, Martínez JI, Lorenzo E, Segura JL. Robust Amide-Linked Fluorinated Covalent Organic Framework for Long-Term Oxygen Reduction Reaction Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402082. [PMID: 38773891 DOI: 10.1002/smll.202402082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/14/2024] [Indexed: 05/24/2024]
Abstract
The high energy demand of the evolving world opens the door to develop more sustainable and environmentally friendly energy sources. Oxygen reduction reaction (ORR) is a promising candidate, being the 2e- pathway of great interest for the green production of hydrogen peroxide. Metal-free covalent organic frameworks (COFs) electrocatalysts present a suitable alternative to substitute the noble-metals more commonly employed in this application. However, the lability of the linkages building up the framework raises an issue for their long-term use and application in aggressive media. Herein, a stable amide-linked COF is reported through post-synthetic modification of a previously reported imine-linked COF proven to be effective as an electrocatalyst, enhancing its chemical stability and electrochemical response. It is found that after the linkage transformation, the new electrocatalyst displays a higher selectivity toward the H2O2 production (98.5%) and an enhanced turnover frequency of 0.155 s-1, which is among the bests reported to date for metal-free and COF based electrocatalysts. The results represent a promising step forward for metal-free non pyrolyzed electrocatalysts, improving their properties through post-synthetic linkage modification for long-term operation.
Collapse
Affiliation(s)
- Miguel Jiménez-Duro
- Facultad de CC. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
| | - Emiliano Martínez-Periñán
- Departamento de Química Analítica y Análisis Instrumental Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, Madrid, 28049, Spain
| | - Marcos Martínez-Fernández
- Facultad de CC. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
| | - José I Martínez
- Departamento de Nanoestructuras, Superficies, Recubrimientos y Astrofísica Molecular, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Madrid, 28049, Spain
| | - Encarnación Lorenzo
- Departamento de Química Analítica y Análisis Instrumental Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, Madrid, 28049, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, Madrid, 28049, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia) Cantoblanco, Madrid, 28049, Spain
| | - José L Segura
- Facultad de CC. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, Madrid, 28040, Spain
| |
Collapse
|
2
|
Martínez-Fernández M, Martínez-Periñán E, de la Peña Ruigómez A, Cabrera-Trujillo JJ, Navarro JAR, Aguilar-Galindo F, Rodríguez-San-Miguel D, Ramos M, Vismara R, Zamora F, Lorenzo E, Segura JL. Scalable Synthesis and Electrocatalytic Performance of Highly Fluorinated Covalent Organic Frameworks for Oxygen Reduction. Angew Chem Int Ed Engl 2023; 62:e202313940. [PMID: 37845181 DOI: 10.1002/anie.202313940] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/18/2023]
Abstract
In this study, we present a novel approach for the synthesis of covalent organic frameworks (COFs) that overcomes the common limitations of non-scalable solvothermal procedures. Our method allows for the room-temperature and scalable synthesis of a highly fluorinated DFTAPB-TFTA-COF, which exhibits intrinsic hydrophobicity. We used DFT-based calculations to elucidate the role of the fluorine atoms in enhancing the crystallinity of the material through corrugation effects, resulting in maximized interlayer interactions, as disclosed both from PXRD structural resolution and theoretical simulations. We further investigated the electrocatalytic properties of this material towards the oxygen reduction reaction (ORR). Our results show that the fluorinated COF produces hydrogen peroxide selectively with low overpotential (0.062 V) and high turnover frequency (0.0757 s-1 ) without the addition of any conductive additives. These values are among the best reported for non-pyrolyzed and metal-free electrocatalysts. Finally, we employed DFT-based calculations to analyse the reaction mechanism, highlighting the crucial role of the fluorine atom in the active site assembly. Our findings shed light on the potential of fluorinated COFs as promising electrocatalysts for the ORR, as well as their potential applications in other fields.
Collapse
Affiliation(s)
- Marcos Martínez-Fernández
- Facultad de CC. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040, Madrid, Spain
- Departamento de Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, 28049, Madrid, Spain
| | - Emiliano Martínez-Periñán
- Departamento de Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, 28049, Madrid, Spain
| | - Alejandro de la Peña Ruigómez
- Facultad de CC. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040, Madrid, Spain
- Chemical and Environmental Technology Department, Univ. Rey Juan Carlos, Móstoles, 28933, Madrid, Spain
| | - Jorge J Cabrera-Trujillo
- CNRS/Université de Pau et des Pays de l'Adour E2S-UPPA, IPREM UMR 5254, 64053, Pau Cedex 09, France
| | - Jorge A R Navarro
- Departamento de Química Inorgánica, Universidad de Granada, Av. Fuentenueva S/N, 18071, Granada, Spain
| | - Fernando Aguilar-Galindo
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, 28049, Madrid, Spain
- Departamento de Química, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, 28049, Madrid, Spain
| | - David Rodríguez-San-Miguel
- Departamento de Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, 28049, Madrid, Spain
| | - Mar Ramos
- Chemical and Environmental Technology Department, Univ. Rey Juan Carlos, Móstoles, 28933, Madrid, Spain
| | - Rebecca Vismara
- Departamento de Química Inorgánica, Universidad de Granada, Av. Fuentenueva S/N, 18071, Granada, Spain
| | - Félix Zamora
- Departamento de Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, 28049, Madrid, Spain
- Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid Campus de Cantoblanco, 28049, Madrid, Spain
| | - Encarnación Lorenzo
- Departamento de Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Campus de Cantoblanco-Crta. Colmenar, 28049, Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid Campus de Cantoblanco, 28049, Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Cantoblanco, 28049, Madrid, Spain
| | - José L Segura
- Facultad de CC. Químicas, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040, Madrid, Spain
| |
Collapse
|
3
|
Xie J, Zhang L, Liu Z, Ling G, Zhang P. Application of electrochemical sensors based on nanomaterials modifiers in the determination of antipsychotics. Colloids Surf B Biointerfaces 2022; 214:112442. [PMID: 35278857 DOI: 10.1016/j.colsurfb.2022.112442] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/21/2022] [Accepted: 03/02/2022] [Indexed: 01/08/2023]
Abstract
At present, the content of antipsychotics in samples is always analyzed by traditional detection methods, including mass spectrometry (MS), spectrophotometry, fluorescence, capillary electrophoresis (CE). However, conventional methods are cumbersome and complex, require a large sample volume, many pre-processing steps, long analysis cycles, expensive instruments, and need well-trained detection capabilities personnel. In addition, patients with schizophrenia require frequent and painful blood collection procedures, which adds additional treatment costs and time burdens. In view of these factors, electrochemical methods have become the most promising candidate technology for timely analysis due to their low cost, simple operation, excellent sensitivity and specificity. As we all know, nanomaterials play an extremely important role in electrochemical sensing applications. As the sensor modifiers, nanomaterials enable electrochemical analysis to overcome the time-consuming and labor-intensive shortcomings of traditional detection methods, and greatly reduce the research cost. Nanomaterials modified electrodes can be used as sensors to determine the concentration of antipsychotics in organisms quickly and accurately, which is a bright spot in the application of nanomaterials. The combination of different nanomaterials can even form a nanocomposite with a synergistic effect. This paper firstly reviews the application of nanomaterials-modified sensors on the basis of research in the past ten years, reviews the use of nanomaterial-modified sensors to quickly and accurately determine the concentration of antipsychotics in biological samples, and demonstrates a new idea of using nanomaterials sensors for drug monitoring and determination. At the end of this review, a brief overview is given of the limitations and the future prospects of nanomaterial sensors for the determination of antipsychotics concentrations.
Collapse
Affiliation(s)
- Jiao Xie
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Lijing Zhang
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Zhiling Liu
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Guixia Ling
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
| | - Peng Zhang
- Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
| |
Collapse
|
4
|
The Role of Structured Carbon in Downsized Transition Metal-Based Electrocatalysts toward a Green Nitrogen Fixation. Catalysts 2021. [DOI: 10.3390/catal11121529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Electrocatalytic Nitrogen Reduction Reaction (NRR) to ammonia is one of the most recent trends of research in heterogeneous catalysis for sustainability. The stark challenges posed by the NRR arise from many factors, beyond the strongly unfavored thermodynamics. The design of efficient heterogeneous electrocatalysts must rely on a suitable interplay of different components, so that the majority of research is focusing on development of nanohybrids or nanocomposites that synergistically harness the NRR sequence. Nanostructured carbon is one of the most versatile and powerful conductive supports that can be combined with metal species in an opportune manner, so as to guide the correct proceeding of the reaction and boost the catalytic activity.
Collapse
|
5
|
Sri S, Lakshmi GBVS, Gulati P, Chauhan D, Thakkar A, Solanki PR. Simple and facile carbon dots based electrochemical biosensor for TNF-α targeting in cancer patient's sample. Anal Chim Acta 2021; 1182:338909. [PMID: 34602194 DOI: 10.1016/j.aca.2021.338909] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/31/2021] [Accepted: 08/02/2021] [Indexed: 01/05/2023]
Abstract
Tumour Necrosis Factor (TNF-α) is a pro-inflammatory cytokine having key roles in cell death, differentiation, survival, proliferation, migration and is a modulator of immune system. Therefore, TNF-α is an ideal biomarker for several disease diagnosis including cancer. However, out of all the biomarkers of cancer, TNF-α) is less explored for cancer detection. Only a few reports are available of developing biosensors for TNF-α targeting in human serum samples. Also, Carbon Dots (CDs) remains less explored in biosensor application. In this regard, for the first time, a sensitive and low-cost electrochemical biosensor based on CDs has developed. CDs were synthesized by simple yet facile microwave pyrolysis. Poly methyl methacrylate (PMMA) was selected as the matrix to hold CDs to fabricate the biosensing platform. This novel CD-PMMA nanocomposite featuring excellent biocompatibility, exceptional electrocatalytic conductivity, and large surface area. CD-PMMA was applied as transducing material to efficiently conjugate antibodies specific towards TNF-α and fabricate electrochemical immunosensor for specific detection of TNF-α. The fabricated immunosensor was used for the detection of TNF-α within a wide dynamic range of 0.05-160 pg mL-1 with a lower detection limit of 0.05 pg mL-1 and sensitivity of 5.56 pg mL-1 cm-2. Furthermore, this CDs based immunosensor retains high sensitivity, selectivity, and stability. This immunosensor demonstrated a high correlation with the conventional technique, Enzyme-Linked Immunosorbent Assay for early screening of cancer patient serum samples.
Collapse
Affiliation(s)
- Smriti Sri
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - G B V S Lakshmi
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Payal Gulati
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Deepika Chauhan
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Alok Thakkar
- All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Pratima R Solanki
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India.
| |
Collapse
|
6
|
Dondo N, Shumba M, Moyo M, Nyoni S. Simultaneous non-steroidal anti-inflammatory drug electrodetection on nitrogen doped carbon nanodots and nanosized cobalt phthallocyanine conjugate modified glassy carbon electrode. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.09.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
7
|
Liu L, Mi Z, Guo Z, Wang J, Feng F. A label-free fluorescent sensor based on carbon quantum dots with enhanced sensitive for the determination of myricetin in real samples. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104956] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
8
|
Jana J, Ngo YLT, Chung JS, Hur SH. Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process. J ELECTROCHEM SCI TE 2020. [DOI: 10.33961/jecst.2020.00934] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
9
|
Royuela S, Martínez-Periñán E, Arrieta MP, Martínez JI, Ramos MM, Zamora F, Lorenzo E, Segura JL. Oxygen reduction using a metal-free naphthalene diimide-based covalent organic framework electrocatalyst. Chem Commun (Camb) 2020; 56:1267-1270. [DOI: 10.1039/c9cc06479f] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel naphthalene diimide-based covalent organic framework (NDI-COF) has been synthesized and successfully exfoliated into COF nanosheets (CONs) to provide an efficient electrocatalyst for the oxygen reduction reaction.
Collapse
Affiliation(s)
- Sergio Royuela
- Departamento de Química Orgánica I
- Facultad de CC. Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Emiliano Martínez-Periñán
- Departamento de Química Analítica y Análisis Instrumental
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - Marina P. Arrieta
- Departamento de Química Orgánica I
- Facultad de CC. Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - José I. Martínez
- Departamento de Nanoestructuras
- Superficies
- Recubrimientos y Astrofísica Molecular
- Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC)
- 28049 Madrid
| | - M. Mar Ramos
- Departamento de Tecnología Química y Ambiental
- Universidad Rey Juan Carlos
- 28933 Madrid
- Spain
| | - Félix Zamora
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - Encarnación Lorenzo
- Departamento de Química Analítica y Análisis Instrumental
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- 28049 Madrid
- Spain
| | - José L. Segura
- Departamento de Química Orgánica I
- Facultad de CC. Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| |
Collapse
|
10
|
Bravo I, Gutiérrez-Sánchez C, García-Mendiola T, Revenga-Parra M, Pariente F, Lorenzo E. Enhanced Performance of Reagent-Less Carbon Nanodots Based Enzyme Electrochemical Biosensors. SENSORS (BASEL, SWITZERLAND) 2019; 19:E5576. [PMID: 31861148 PMCID: PMC6960740 DOI: 10.3390/s19245576] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/03/2019] [Accepted: 12/14/2019] [Indexed: 01/08/2023]
Abstract
This work reports on the advantages of using carbon nanodots (CNDs) in the development of reagent-less oxidoreductase-based biosensors. Biosensor responses are based on the detection of H2O2, generated in the enzymatic reaction, at 0.4 V. A simple and fast method, consisting of direct adsorption of the bioconjugate, formed by mixing lactate oxidase, glucose oxidase, or uricase with CNDs, is employed to develop the nanostructured biosensors. Peripherical amide groups enriched CNDs are prepared from ethyleneglycol bis-(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid and tris(hydroxymethyl)aminomethane, and used as precursors. The bioconjugate formed between lactate oxidase and CNDs was chosen as a case study to determine the analytical parameters of the resulting L-lactate biosensor. A linear concentration range of 3.0 to 500 µM, a sensitivity of 4.98 × 10-3 µA·µM-1, and a detection limit of 0.9 µM were obtained for the L-lactate biosensing platform. The reproducibility of the biosensor was found to be 8.6%. The biosensor was applied to the L-lactate quantification in a commercial human serum sample. The standard addition method was employed. L-lactate concentration in the serum extract of 0.9 ± 0.3 mM (n = 3) was calculated. The result agrees well with the one obtained in 0.9 ± 0.2 mM, using a commercial spectrophotometric enzymatic kit.
Collapse
Affiliation(s)
- Iria Bravo
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; (I.B.); (C.G.-S.); (T.G.-M.); (M.R.-P.); (F.P.)
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Faraday, 9, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Cristina Gutiérrez-Sánchez
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; (I.B.); (C.G.-S.); (T.G.-M.); (M.R.-P.); (F.P.)
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Faraday, 9, Campus UAM, Cantoblanco, 28049 Madrid, Spain
| | - Tania García-Mendiola
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; (I.B.); (C.G.-S.); (T.G.-M.); (M.R.-P.); (F.P.)
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Faraday, 9, Campus UAM, Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Mónica Revenga-Parra
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; (I.B.); (C.G.-S.); (T.G.-M.); (M.R.-P.); (F.P.)
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Faraday, 9, Campus UAM, Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Félix Pariente
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; (I.B.); (C.G.-S.); (T.G.-M.); (M.R.-P.); (F.P.)
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Encarnación Lorenzo
- Departamento de Química Analítica y Análisis Instrumental, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; (I.B.); (C.G.-S.); (T.G.-M.); (M.R.-P.); (F.P.)
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Faraday, 9, Campus UAM, Cantoblanco, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| |
Collapse
|
11
|
Loukanov A, Angelov A, Takahashi Y, Nikolov I, Nakabayashi S. Carbon nanodots chelated with metal ions as efficient electrocatalysts for enhancing performance of microbial fuel cell based on sulfate reducing bacteria. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.04.067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
12
|
Campuzano S, Yáñez-Sedeño P, Pingarrón JM. Carbon Dots and Graphene Quantum Dots in Electrochemical Biosensing. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E634. [PMID: 31010125 PMCID: PMC6523669 DOI: 10.3390/nano9040634] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 04/16/2019] [Accepted: 04/17/2019] [Indexed: 12/11/2022]
Abstract
Graphene quantum dots (GQDs) and carbon dots (CDs) are among the latest research frontiers in carbon-based nanomaterials. They provide interesting attributes to current electrochemical biosensing due to their intrinsic low toxicity, high solubility in many solvents, excellent electronic properties, robust chemical inertness, large specific surface area, abundant edge sites for functionalization, great biocompatibility, low cost, and versatility, as well as their ability for modification with attractive surface chemistries and other modifiers/nanomaterials. In this review article, the use of GQDs and CDs as signal tags or electrode surface modifiers to develop electrochemical biosensing strategies is critically discussed through the consideration of representative approaches reported in the last five years. The advantages and disadvantages arising from the use of GQDs and CDs in this context are outlined together with the still required work to fulfil the characteristics needed to achieve suitable electrochemical enzymatic and affinity biosensors with applications in the real world.
Collapse
Affiliation(s)
- Susana Campuzano
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - Paloma Yáñez-Sedeño
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| | - José M Pingarrón
- Departamento de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain.
| |
Collapse
|
13
|
Spectroelectrochemical operando method for monitoring a phenothiazine electrografting process on amide functionalized C-nanodots/Au hybrid electrodes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|