Reduced graphene oxide/titanium carbide <scp>MXene nanocomposite‐modified</scp> electrode for electrochemical hemoglobin biosensor

Sun, Yunxiu; Wang, Baoli; Ding, Ying; Hui, Chi Wai; Li, Xiaoqing; Liang, Yan; Li, Guangjiu; Sun, Wei

doi:10.1002/jccs.202100229

Cited by 14 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Graphene is a unique two-dimensional material with spectacular structural and electronic properties that has appealed during the emergence of a new era of sensors. With focus on achieving improved performances, researchers are exploring the spectacular properties of graphene, such as its high specific surface area (theoretically, 2.630 m 2 /g for graphene with a single layer of carbon atoms) [26], outstanding electronic properties [27], strong mechanical resistance [28], and very good thermal and electrical conductivity [29], for applications in diverse fields [30]. A functionalized graphene-based material is graphene oxide (GO), which is one of the source materials for synthesis of graphene by chemical or thermal reduction processes [31].…”

Section: Introductionmentioning

confidence: 99%

Sensitive Detection of Rosmarinic Acid Using Peptide-Modified Graphene Oxide Screen-Printed Carbon Electrode

2022

View full text Add to dashboard Cite

Peptides have been used as components in biological analysis and fabrication of novel sensors due to several reasons, including well-known synthesis protocols, diverse structures, and acting as highly selective substrates for enzymes. Bio-conjugation strategies can provide a simple and efficient way to convert peptide-analyte interaction information into a measurable signal, which can be further used for the manufacture of new peptide-based biosensors. This paper describes the sensitive properties of a peptide-modified graphene oxide screen-printed carbon electrode for accurate and sensitive detection of a natural polyphenol antioxidant compound, namely rosmarinic acid. Glutaraldehyde was chosen as the cross-linking agent because it is able to bind nonspecifically to the peptide. We demonstrated that the strong interaction between the immobilized peptide on the surface of the sensor and rosmarinic acid favors the addition of rosmarinic acid on the surface of the electrode, leading to an efficient preconcentration that determines a high sensitivity of the sensor for the detection of rosmarinic acid. The experimental conditions were optimized using different pH values and different amounts of peptide to modify the sensor surface, so that its analytical performances were optimal for rosmarinic acid detection. By using cyclic voltammetry (CV) as a detection method, a very low detection limit (0.0966 μM) and a vast linearity domain, ranging from 0.1 µM to 3.20 µM, were obtained. The novelty of this work is the development of a novel peptide-based sensor with improved performance characteristics for the quantification of rosmarinic acid in cosmetic products of complex composition. The FTIR method was used to validate the voltammetric method results.

show abstract

Section: Introductionmentioning

confidence: 99%

Sensitive Detection of Rosmarinic Acid Using Peptide-Modified Graphene Oxide Screen-Printed Carbon Electrode

2022

View full text Add to dashboard Cite

show abstract

“…[ 31 ] The FESEM image of RGO (Figure 1b) shows the wrinkled paper‐like structure, corrugated surface, less aggregate, and irregular structure. [ 32 ] These changes in surface morphology occur in RGO is due to the elimination of oxygenated functional groups from the RGO surface.…”

Section: Resultsmentioning

confidence: 99%

Batch and continuous studies on adsorptive removal of hexavalent chromium [Cr(VI)] using reduced graphene oxide

Rout

Jena

2022

J Chinese Chemical Soc

View full text Add to dashboard Cite

In this study, the reduced form of graphene oxide (RGO) has been synthesized by using hydrazine hydrate as a reducing agent and used for Cr(VI) removal. The physicochemical properties of the as‐synthesized material were studied by FESEM, XRD, RAMAN, and FTIR. The optimized adsorption parameters were time of 75 min, solution pH 3.0, temperature 35°C, and dosage of 0.3 g/l. The isotherms were perfectly simulated by the Langmuir model, and the kinetic data followed the pseudo‐second‐order model. The maximum uptake capacity was 787.401 mg/g at 35°C. Thermodynamic analysis indicated an endothermic and spontaneous process occurs. Competition from interfering ions (SO42−, NO3−, Cl−, HCO3−, Co2+, and Cu2+) proved insignificant. After five cycles of regeneration, the removal remains at 85.75%. From the column study, it was observed that the parameters like breakthrough time (tb), bed capacity (qbed), and exhaustion time (te) increase with an increase in bed height and decrease with an increase in Cr(VI) flow rate. Adsorption performance for industrial effluents shows up to 55.32% removal. The above superior adsorption performance validated the application of the RGO as an efficient adsorbent for the remediation of Cr(VI) ions from wastewater.

show abstract

“…The rGO surface exhibited a typical wrinkled surface morphology on a scale of 2 µm (Fig. 1A), revealing a folded nanosheet structure after the hydrothermal reaction of GO [29]. Dispersed Ti 3 C 2 was polymerized in the rGO hydrogel (Fig.…”

Section: Characterizationmentioning

confidence: 99%

A non-invasive glucose sensor based on 3D reduced graphene oxide-MXene and AuNPs composite electrode for the detection of saliva glucose

Shang,

Yu,

Shang

et al. 2024

J Appl Electrochem

View full text Add to dashboard Cite

Regular monitoring of blood glucose levels is crucial in diabetes management. Commonly used procedures may be invasive and can lead to cross-infection and in ammation. Therefore, a safe, noninvasive blood glucose-monitoring technology is needed. Herein, a 3D reduced graphene oxide (rGO) electrode was modi ed with MXene (Ti 3 C 2 ) and gold nanoparticles (AuNPs) to construct a non-invasive, saliva glucose detection electrode. The Au/rGO-Ti 3 C 2 electrode exhibited good detection performance for glucose concentrations in the range of 10 µM-21 mM at a working potential of 0.6 V, with a detection limit of 3.1 µM glucose, and a sensitivity of 355 µA mM − 1 cm − 2 . The Au/rGO-Ti 3 C 2 electrode showed almost no response to the addition of interfering substances, and no effect was observed upon subsequent glucose detection. The sensor could detect glucose in arti cial saliva and saliva supernatant. The modi ed electrode showed a signi cant response to low glucose concentrations, even at 10 µM.These results indicate the suitability of the Au/rGO-Ti 3 C 2 electrode for saliva glucose detection. The electrode developed in this study has great potential in improving the e ciency of diabetes monitoring through pain-free, non-invasive glucose detection in saliva.

show abstract

Reduced graphene oxide/titanium carbide MXene nanocomposite‐modified electrode for electrochemical hemoglobin biosensor

Cited by 14 publications

References 33 publications

Sensitive Detection of Rosmarinic Acid Using Peptide-Modified Graphene Oxide Screen-Printed Carbon Electrode

Sensitive Detection of Rosmarinic Acid Using Peptide-Modified Graphene Oxide Screen-Printed Carbon Electrode

Batch and continuous studies on adsorptive removal of hexavalent chromium [Cr(VI)] using reduced graphene oxide

A non-invasive glucose sensor based on 3D reduced graphene oxide-MXene and AuNPs composite electrode for the detection of saliva glucose

Contact Info

Product

Resources

About