Facile synthesis of 3D porous nitrogen-doped graphene as an efficient electrocatalyst for adenine sensing

Li, Junhua; Jiang, Jianbo; Feng, Haibo; Xu, Zhifeng; Tang, Siping; Deng, Peihong; Qian, Dong

doi:10.1039/c6ra01864e

Cited by 37 publications

(6 citation statements)

References 54 publications

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“…The peak at +0.73 to +0.75 V is attributed to the oxidation of guanine, whereas that at +1.0 to +1.08 V results from adenine . The mechanism of oxidation of both DNA purine bases is described in refs and .…”

Section: Resultssupporting

confidence: 77%

Boron-Enhanced Growth of Micron-Scale Carbon-Based Nanowalls: A Route toward High Rates of Electrochemical Biosensing

Siuzdak

Ficek²,

Sobaszek³

et al. 2017

ACS Appl. Mater. Interfaces

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In this study, we have demonstrated the fabrication of novel materials called boron-doped carbon nanowalls (B:CNWs), which are characterized by remarkable electrochemical properties such as high standard rate constant (k°), low peak-to-peak separation value (ΔE) for the oxidation and reduction processes of the [Fe(CN)] redox system, and low surface resistivity. The B:CNW samples were deposited by the microwave plasma-assisted chemical vapor deposition (CVD) using a gas mixture of H/CH/BH and N. Growth results in sharp-edged, flat, and long CNWs rich in sp as well as sp hybridized phases. The achieved high values of k° (1.1 × 10 cm s) and ΔE (85 mV) are much lower compared to those of the glassy carbon or undoped CNWs. The enhanced electrochemical performance of the B:CNW electrode facilitates the simultaneous detection of DNA purine bases: adenine and guanine. Both separated oxidation peaks for the independent determination of guanine and adenine were observed by means of cyclic voltammetry or differential pulse voltammetry. It is worth noting that the determined sensitivities and the current densities were about 1 order of magnitude higher than those registered by other electrodes.

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Section: Resultssupporting

confidence: 77%

Boron-Enhanced Growth of Micron-Scale Carbon-Based Nanowalls: A Route toward High Rates of Electrochemical Biosensing

Siuzdak

Ficek²,

Sobaszek³

et al. 2017

ACS Appl. Mater. Interfaces

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“…3D graphene architectures strategically eliminate the risk of face-to-face restacking and expand the utilization of graphene in a wider range of fields . They hold great promise for a myriad of electrochemical applications, such as supercapacitors, , batteries, ,,, solar cells, − fuel cells, ,− electrochemical sensors, − and flexible electronics. ,, Meanwhile, 3D graphene materials have been extensively used as catalyst supports in a series of chemical and electrochemical reactions and as adsorbents for environmental remediation, where macroscopic 3D architectures also show great advantage in recycling and recovery. , …”

Section: Design Considerations Of 3d Graphene Materials For Various A...mentioning

confidence: 99%

3D Graphene Materials: From Understanding to Design and Synthesis Control

2020

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Carbon materials, with their diverse allotropes, have played significant roles in our daily life and the development of material science. Following 0D C60 and 1D carbon nanotube, 2D graphene materials, with their distinctively fascinating properties, have been receiving tremendous attention since 2004. To fulfill the efficient utilization of 2D graphene sheets in applications such as energy storage and conversion, electrochemical catalysis, and environmental remediation, 3D structures constructed by graphene sheets have been attempted over the past decade, giving birth to a new generation of graphene materials called 3D graphene materials. This review starts with the definition, classifications, brief history, and basic synthesis chemistries of 3D graphene materials. Then a critical discussion on the design considerations of 3D graphene materials for diverse applications is provided. Subsequently, after emphasizing the importance of normalized property characterization for the 3D structures, approaches for 3D graphene material synthesis from three major types of carbon sources (GO, hydrocarbons and inorganic carbon compounds) based on GO chemistry, hydrocarbon chemistry, and new alkali-metal chemistry, respectively, are comprehensively reviewed with a focus on their synthesis mechanisms, controllable aspects, and scalability. At last, current challenges and future perspectives for the development of 3D graphene materials are addressed.

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“…[28][29][30][31][32][33][34][35][36] Several approaches have been reported for enhancing the activity of carbon-based materials by doping the carbon chain by non-metal heteroatoms, such as boron (B), phosphorous (P), nitrogen (N), and sulfur (S). 4,8,22,[37][38][39][40] Doping of S atoms in the carbon chain enhances the electrochemical activity.…”

Section: Introductionmentioning

confidence: 99%

“…The simple and controlled synthesis and construction of carbon-based materials as sensors and biosensor-based electrodes have attained great interest. ,,− Various types of carbon-based materials have been used as working materials due to their good electrochemical properties, easy fabrication, and facile functionality; such materials include graphene, carbon nanotubes, fullerenes, diamond, carbon nanomaterials, and their composites. ,,− Significant properties such as large surface area, good mechanical stability, good conductivity, easy fabrication and functionalization, and composite formation within the metal and/or metal oxides have gained particular interest in various fields, such as biosensing, water treatment, and energy. − Several approaches have been reported for enhancing the activity of carbon-based materials by doping the carbon chain with nonmetal heteroatoms, such as boron (B), phosphorus (P), nitrogen (N), and sulfur (S). ,,,− Doping of S atoms in the carbon chain enhances the electrochemical activity. The mechanism of action remains unclear because the electronegativity of S (2.58) is close to C (2.55).…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Circular Surface Curvature of a Spherule-Based Electrode for Selective Signaling and Dynamic Mobility of Norepinephrine in Living Cells

Emran

Shenashen

El‐Safty

et al. 2020

ACS Appl. Bio Mater.

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A highly sensitive protocol for signaling norepinephrine (NEP) in human fluids and neuronal cell line models should be established for clinical investigation of some neuronal diseases. A metal-free electrode catalyst was designed based on sulfur-doped carbon spheroidal surface (S-CSN) and employed as a transducing element for selective signaling of NEP in biological samples. The designed electrode of S-CSN features spherical construct and curvature surface to form spheroidal nanolayer with an average layer size of < 2 nm. The S-CSN shows surface topography of circular surface curvature with rugged surface texture, ridge end, and free open spaces between interlayers. The rich-space diversity surfaces offer forest electron transports and heavily target loads along with in-/out-plane circular spheres of the S-CSN surface. The active doping of the carbon-based electrode by S atoms creates an active transducing element with many active sites, strong binding to targeted molecules, facile diffusion of charges/molecules, long-term durability, and dense reactive exposure sites for signaling NEP at ultra-trace levels. S-CSN could be a sensitive and selective nanosensor for signaling NEP and establishing a sensing protocol with high stability and reproducibility. The sensory protocol based on S-CSN exhibits high sensitivity and selectivity with a low detection limit of 0.001 µM and a wide linear range of 0.01-0.8 µM. The in vitro sensory protocol of NEP secreted from living cells (neuronal cell line model) under stimulated agents possesses high sensitivity, low cytotoxicity, and high biocompatibility. These results confirm the successful establishment of NEP sensor in human blood samples and neuronal cells for clinical investigation.

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Facile synthesis of 3D porous nitrogen-doped graphene as an efficient electrocatalyst for adenine sensing

Abstract: We demonstrate a simple, low-cost and eco-friendly strategy for the convenient preparation of three-dimensional porous nitrogen-doped graphene (3D-N-GN) for the highly sensitive detection of adenine.

Cited by 37 publications

References 54 publications

Boron-Enhanced Growth of Micron-Scale Carbon-Based Nanowalls: A Route toward High Rates of Electrochemical Biosensing

Boron-Enhanced Growth of Micron-Scale Carbon-Based Nanowalls: A Route toward High Rates of Electrochemical Biosensing

3D Graphene Materials: From Understanding to Design and Synthesis Control

Three-Dimensional Circular Surface Curvature of a Spherule-Based Electrode for Selective Signaling and Dynamic Mobility of Norepinephrine in Living Cells

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