Size-Dependent Programming of the Dynamic Range of Graphene Oxide–DNA Interaction-Based Ion Sensors

2014 ◽  
Vol 86 (8) ◽  
pp. 4047-4051 ◽  
Author(s):  
Huan Zhang ◽  
Sisi Jia ◽  
Min Lv ◽  
Jiye Shi ◽  
Xiaolei Zuo ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Dynamic Range ◽  
Dna Interaction ◽  
Ion Sensors ◽  
Size Dependent

Size-dependent modulation of graphene oxide–aptamer interactions for an amplified fluorescence-based detection of aflatoxin B1 with a tunable dynamic range

The Analyst ◽  
2016 ◽  
Vol 141 (13) ◽  
pp. 4029-4034 ◽  
Author(s):  
JingJing Zhang ◽  
Zengmei Li ◽  
Shancang Zhao ◽  
Yi Lu
Keyword(s):  
Graphene Oxide ◽  
Fluorescence Detection ◽  
Aflatoxin B1 ◽  
Dynamic Range ◽  
Size Dependent

Size-dependent modulation of graphene oxide–aptamer interactions was investigated for amplified fluorescence detection of aflatoxin B1 with a tunable dynamic range.

scholarly journals Size‐Dependent Pulmonary Impact of Thin Graphene Oxide Sheets in Mice: Toward Safe‐by‐Design

2020 ◽  
Vol 7 (12) ◽  
pp. 1903200 ◽  
Author(s):  
Artur Filipe Rodrigues ◽  
Leon Newman ◽  
Dhifaf Jasim ◽  
Sourav P. Mukherjee ◽  
Jun Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Size Dependent ◽  
Graphene Oxide Sheets ◽  
Safe By Design

scholarly journals Graphene oxide decorated with zinc oxide nanoflower, silver and titanium dioxide nanoparticles: fabrication, characterization, DNA interaction, and antibacterial activity

RSC Advances ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 3704-3714 ◽  
Author(s):  
Nagi El-Shafai ◽  
Mohamed E. El-Khouly ◽  
Maged El-Kemary ◽  
Mohamed Ramadan ◽  
Ibrahim Eldesoukey ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Titanium Dioxide Nanoparticles ◽  
Dna Interaction

The fabrication, characterization, and antibacterial activity of novel nanocomposites based on graphene oxide (GO) nanosheets decorated with silver, titanium dioxide nanoparticles, and zinc oxide nanoflowers were examined.

Thermally managed Z-scan methods investigation of the size-dependent nonlinearity of graphene oxide in various solvents

2016 ◽  
Vol 33 (11) ◽  
pp. 2395 ◽  
Author(s):  
Paul Burkins ◽  
Robinson Kuis ◽  
Isaac Basaldua ◽  
Anthony M. Johnson ◽  
Siva Ram Swaminathan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Size Dependent

Size-Dependent Cell Uptake of Protein-Coated Graphene Oxide Nanosheets

2012 ◽  
Vol 4 (4) ◽  
pp. 2259-2266 ◽  
Author(s):  
Qingxin Mu ◽  
Gaoxing Su ◽  
Liwen Li ◽  
Ben O. Gilbertson ◽  
Lam H. Yu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Cell Uptake ◽  
Graphene Oxide Nanosheets ◽  
Size Dependent ◽  
Dependent Cell

Thermally managed Z-scan methods investigation of the size-dependent nonlinearity of graphene oxide in various solvents: publisher’s note

2017 ◽  
Vol 34 (6) ◽  
pp. 1214 ◽  
Author(s):  
Paul Burkins ◽  
Robinson Kuis ◽  
Isaac Basaldua ◽  
Anthony M. Johnson ◽  
Siva Ram Swaminathan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Size Dependent

scholarly journals Facile and green synthesis of silver nanoparticle-reduced graphene oxide composite and its application as nonenzymatic electrochemical sensor for hydrogen peroxide

2021 ◽  
pp. 295-308 ◽  
Author(s):  
Jagdish C. Bhangoji ◽  
Srikant Sahoo ◽  
Ashis Kumar Satpati ◽  
Suresh S. Shendage
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Dynamic Range ◽  
Electrochemical Impedance ◽  
Metal Foil ◽  
Reduced Graphene ◽  
Scanning Electron

A simple and environment friendly protocol has been developed for the synthesis of Ag nanoparticles (AgNPs) supported on reduced graphene oxide (rGO) with copper metal foil as reductant. The prepared AgNPs-rGO, nanocomposite was characterized by various analytical techniques such as scanning electron microscopy (SEM), field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD). The electrochemical performance of the material has been evaluated using cyclic voltammetry (CV), chronoamperometry and electrochemical impedance spectroscopy (EIS). The average crystallite size of AgNPs is found to be 32.34 nm. The application of prepared electrocatalyst (AgNPs-rGO) as a non-enzymatic sensor is examined through the modified electrode with the synthesized AgNPs-rGO. The sensor showed excellent performance toward H2O2 reduction with a sensitivity of 12.73 µA.cm-2.mM-1, with a linear dynamic range of 1.5 µM – 100 mM, and the detection limit of 1.90 µM (S/N = 3). Furthermore, the sensor displayed high sensitivity, reproducibility, stability and selectivity for the determination of H2O2. The results demonstrated that AgNPs-rGO has potential applications as sensing material for quantitative determination of H2O2.

scholarly journals Poly-Phthalocyanine–Doped Graphene Oxide Nanosheet Conjugates for Electrocatalytic Oxidation of Drug Residues

2021 ◽  
Vol 9 ◽  
Author(s):  
Prince Chundu ◽  
Edith Dube ◽  
Ngceboyakwethu P. Zinyama ◽  
Mambo Moyo ◽  
Munyaradzi Shumba
Keyword(s):  
Electron Microscopy ◽  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Dynamic Range ◽  
Electrochemical Impedance ◽  
Cow Milk ◽  
Catalytic Rate Constant ◽  
Donor And Acceptor ◽  
Vis Spectroscopy ◽  
Doped Graphene

Donor and acceptor phthalocyanine molecules were copolymerized and linked to graphene oxide nanosheets through amidation to yield electrocatalytic platforms on glassy carbon electrodes. The platforms were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, UV/Vis spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The fabricated electrochemical catalytic surfaces were then evaluated toward electrocatalytic detection of ascorbic acid and tryptophan. These were characterized by a wide linear dynamic range and low limits of detection and quantification of 2.13 and 7.12 µM for ascorbic acid and 1.65 and 5.5 µM for tryptophan, respectively. The catalytic rate constant was 1.86 × 104 and 1.51 × 104 M−1s−1 for ascorbic acid and tryptophan, respectively. The Gibbs energy for catalytic reactions was −17.45 and −14.83 kJ mol−1 depicting a spontaneous reaction on the electrode surface. The sensor platform showed an impressive recovery when applied in real samples such as fresh cow milk, in the range 91.71–106.73% for both samples. The developed sensor therefore shows high potential for applicability for minute quantities of the analytes in real biological samples.

Size-dependent separation of graphene oxide by deformation of packed-gel in a chromatographic column

2019 ◽  
Vol 55 (7) ◽  
pp. 1356-1363
Author(s):  
Yuji Takaoka ◽  
Shohei Esaki ◽  
Koichi Sakaguchi ◽  
Tomotsumi Fujisawa ◽  
Masashi Unno ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Chromatographic Column ◽  
Size Dependent
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