An overview of recent applications of reduced graphene oxide as a basis of electroanalytical sensing platforms

Rowley‐Neale, Samuel J.; Randviir, Edward P.; Dena, Ahmed S. Abo; Banks, Craig E.

doi:10.1016/j.apmt.2017.11.010

Cited by 287 publications

(120 citation statements)

References 84 publications

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“…Graphene oxides also show a process‐based dependence on the type and quantity of oxygen functional groups that appear on the individual sheets . While progress has been made with novel synthesis methods proposed recently,, a method for obtaining well‐defined, stoichiometric covalent graphene derivatives with graphene oxide as an intermediate remains elusive ,…”

Section: Introductionmentioning

confidence: 99%

Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

et al. 2018

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Well‐defined, stoichiometric derivatives of graphene afford many opportunities in fine‐tuning of graphene properties and hence, extend the application potential of this material. Here, we present the electrochemical properties of cyanographene (G−CN), and graphene acid (G−COOH) in order to understand the role of the covalently attached functional groups on the graphene sheet in electrochemical sensing for the detection of biomarkers. G−CN shows better performance for the negatively charged analytes ascorbic and uric acids when compared to G−COOH. The less‐favourable performance of G−COOH is explained by repulsion between negatively charged analytes and negatively charged functional groups of G−COOH. The capacitance of both materials is in a comparable range, but chronopotentiometry reveals that G−CN shows a greater capacitance than G−COOH. The identified differences in electrochemical properties imprinted by the functional group show that its chemical nature can be exploited in fine‐tuning of the selectivity of electrochemical sensing and energy storage applications.

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Section: Introductionmentioning

confidence: 99%

Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

et al. 2018

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“…In almost all cases, a certain degree of oxygen containing functionalities is always left back, yielding partly oxidized graphene containing many sp 3 ‐defects. Due to the ability to prepare and process such graphene flakes in solution this material is very often used as a component of composite electrodes . Despite this fact, individual RGO flakes have been used as components of devices for both electrochemistry and sensor applications …”

Section: Graphene Monolayer Surfacesmentioning

confidence: 99%

Bioelectronics and Interfaces Using Monolayer Graphene

et al. 2018

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Graphene is expected to revolutionize several application areas ranging from portable energy conversion and storage to miniaturized biosensors for medical applications. In this endeavor, the control of surface characteristics is an essential aspect for understanding fundamental phenomena occurring at the graphene‐liquid interface. In this comprehensive review, we address recent progress in the investigation of the interfacial characteristics of monolayer graphene and methods for modulating the physical and chemical properties of this interface. We focus on the electrochemistry and field‐effect measurements in liquid, which provide an improved understanding of the unique graphene‐liquid interface, with due consideration of the influence of the underlying substrate and structural defects in graphene. Finally, we present reported examples of using single graphene monolayers in miniaturized devices for realizing sensors, neural interfaces and batteries.

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“…We performed DFT calculations using the Gaussian 09 program at the level of spin restricted B3LYP/6-311G(d,p) using Gaussian 09. 21,22 Results and Discussions The UV bands at 230 and 300 nm that can be ascribed to the π ! Figure 1 shows the structures of GOs and rGOs created by referring from previous reports.…”

Section: Instrumental Measurementsmentioning

confidence: 99%

Water Molecules on the Epoxide Groups of Graphene Oxide Surfaces

Tran

Lee

Lee³

et al. 2018

Bulletin Korean Chem Soc

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The dispersion interaction between a water molecule and an epoxide group on graphene oxides (GOs) was estimated both experimentally and theoretically. We performed a deconvolution analysis of C O and OH bands using attenuated-total reflection infrared absorption (ATR-IR) spectroscopy. The C O mode at approximately 1737 cm −1 , the bending δ(OH 2 ) band at approximately 1639 cm −1 , and the δ(-COH) band at approximately 1410 cm −1 were clearly observed for the graphene oxides (GOs), whereas a weak C C band at approximately 1599 cm −1 was found for the reduced graphene oxides (rGOs). The broad OH bands showed different profiles for GOs and rGOs. Density functional theory (DFT) calculations of gas molecules suggest that the water (H 2 O) molecule on the epoxide surface of GOs should be the most favorable. A comparison of the deconvolution analysis of the OH band suggests more substantial binding of the water molecule on the oxygen atom on GOs.

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An overview of recent applications of reduced graphene oxide as a basis of electroanalytical sensing platforms

Cited by 287 publications

References 84 publications

Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

Cyanographene and Graphene Acid: The Functional Group of Graphene Derivative Determines the Application in Electrochemical Sensing and Capacitors

Bioelectronics and Interfaces Using Monolayer Graphene

Water Molecules on the Epoxide Groups of Graphene Oxide Surfaces

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