One-pot dual product synthesis of hierarchical Co3O4@N-rGO for supercapacitors, N-GDs for label-free detection of metal ion and bio-imaging applications
Source abstract
Abstract
Abstract Cobalt oxide nanoparticles@nitrogen-doped reduced graphene oxide (Co3O4@N-rGO) composite and nitrogen-doped graphene dots (N-GDs) were synthesized by a one-pot simple hydrothermal method. The average sizes of the synthesized bare cobalt oxide nanoparticles (Co3O4 NPs) and Co3O4 NPs in the Co3O4@N-rGO composite were around 22 and 24 nm, respectively with an interlayer distance of 0.21 nm, as calculated using the XRD patterns. The Co3O4@N-rGO electrode exhibits superior capacitive performance with a high capability of about 450 F g−1 at a current density of 1 A g−1 and has excellent cyclic stability, even after 1000 cycles of GCD at a current density of 4 A g−1. The obtained N-GDs exhibited high sensitivity and selectivity towards Fe2+ and Fe3+, the limit of detection was as low as 1.1 and 1.0 μM, respectively, representing high sensitivity to Fe2+ and Fe3+. Besides, the N-GDs was applied for bio-imaging. We found that N-GDs were suitable candidates for differential staining applications in yeast cells with good cell permeability and localization with negligible cytotoxicity. Hence, N-GDs may find dual utility as probes for the detection of cellular pools of metal ions (Fe3+/Fe2+) and also for early detection of opportunistic yeast infections in biological samples.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrochemical sensors and biosensors · Molecular Sensors and Ion Detection · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (75)
Show source-provided references
1. Supercapacitive properties of hydrothermally synthesized Co3O4 nanostructures10.1021/jp2049684 ↗
2. Ultralayered Co3O4 for high-performance supercapacitor applications10.1021/jp201200e ↗
3. Two-dimensional Co3O4 thin sheets assembled by 3D interconnected nanoflake array framework structures with enhanced supercapacitors performance derived from coordination complexes10.1016/j.cej.2016.02.009 ↗
4. Hollow fluffy Co3O4 cages as efficient electroactive materials for supercapacitors and oxygen evolution reaction10.1021/acsami.5b05989 ↗
5. Effect of microwave on the nanowire morphology, optical, magnetic, and pseudocapacitance behavior of Co3O410.1021/jp209165v ↗
6. Fabrication of nanosheets Co3O4 by oxidation-assisted dealloying method for high capacity supercapacitors10.1016/j.matlet.2016.08.049 ↗
7. Embedded Ag quantum dots into interconnected Co3O4 nanosheets grown on 3D graphene networks for high stable and flexible supercapacitors10.1016/j.electacta.2016.12.073 ↗
8. Facile synthesis ultrathin mesoporous Co3O4 nanosheets for high-energy asymmetric supercapacitors10.1016/j.jallcom.2016.06.156 ↗
9. Biomorphic synthesis of mesoporous Co3O4 microtubules and their pseudocapacitive performance10.1021/am5044449 ↗
10. Morphology controlled synthesis of nanoporous Co3O4 nanostructures and their charge storage characteristics in supercapacitors10.1021/am4027482 ↗
11. All-solid-state symmetric supercapacitor based on Co3O4 nanoparticles on vertically aligned graphene10.1021/acsnano.5b00821 ↗
12. Morphology-controllable synthesis of cobalt oxalates and their conversion to mesoporous Co3O4 nanostructures for application in supercapacitors10.1021/ic200309t ↗
13. Facile synthesis of Co3O4 with different morphologies loaded on amine modified graphene and their application in supercapacitors10.1016/j.jallcom.2016.05.282 ↗
14. Thin Co3O4 nanosheet array on 3D porous graphene/nickel foam as a binder-free electrode for high-performance supercapacitors10.1016/j.electacta.2015.12.011 ↗
15. Carbon-encapsulated Co3O4@CoO@Co nanocomposites for multifunctional applications in enhanced long-life lithium storage, supercapacitor and oxygen evolution reaction10.1016/j.electacta.2016.10.116 ↗
16. Layer-dependent growth of two-dimensional Co3O4 nanostructure arrays on graphene for high performance supercapacitors10.1016/j.jallcom.2016.12.050 ↗
17. Multi-channeled hierarchical porous carbon incorporated Co3O4 nanopillar arrays as 3D binder-free electrode for high performance supercapacitors10.1016/j.nanoen.2015.11.038 ↗
18. Co3O4@MWCNT nanocable as cathode with superior electrochemical performance for supercapacitors10.1021/am5062272 ↗
19. One-pot hydrothermal synthesis of 3D flower-like RGO/Co3O4/Ni(OH)2 composite film on nickel foam for high-performance supercapacitors10.1016/j.electacta.2014.05.032 ↗
20. 3D Graphene-cobalt oxide electrode for high-performance supercapacitor and enzymeless glucose detection10.1021/nn300097q ↗
21. Enhanced electrochemical performance of cobalt oxide nanocube intercalated reduced graphene oxide for supercapacitor application10.1039/C6RA00160B ↗
22. Microwave assisted green synthesis of fluorescent N-doped carbon dots: cytotoxicity and bio-imaging applications10.1016/j.jphotobiol.2016.05.017 ↗
23. Facile and purification-free synthesis of nitrogenated amphiphilic graphitic carbon dots10.1021/acs.chemmater.5b04915 ↗
24. Synthesis of nitrogen-doped graphene quantum dots at low temperature for electrochemical sensing trinitrotoluene10.1021/acs.analchem.5b03201 ↗
25. A green synthesis of highly fluorescent nitrogen-doped graphene quantum dots for the highly sensitive and selective detection of mercury(II) ions and biothiols10.1039/C5AY03208C ↗
26. One-step preparation of nitrogen-doped graphene quantum dots from oxidized debris of graphene oxide10.1039/C2TB00189F ↗
27. One-pot synthesis of hydrophilic and hydrophobic N-doped graphene quantum dots via exfoliating and disintegrating graphite flakes10.1038/srep30426 ↗
28. Synthesis of highly fluorescent nitrogen-doped graphene quantum dots for sensitive, label-free detection of Fe(III) in aqueous media10.1016/j.bios.2014.02.061 ↗
29. Iron in infection and immunity10.1016/j.chom.2013.04.010 ↗
30. Fluorescent sensors for measuring metal ions in living systems10.1021/cr400546e ↗
31. Amino acids as the source for producing carbon nanodots: microwave assisted one-step synthesis, intrinsic photoluminescence property and intense chemiluminescence enhancement10.1039/c2cc34612e ↗
32. Facile synthesis of zinc oxide nanoparticles decorated graphene oxide composite via simple solvothermal route and their photocatalytic activity on methylene blue degradation10.1016/j.jphotobiol.2016.07.019 ↗
33. Supercapacitor performance of carbon supported Co3O4 nanoparticles synthesized using Terminalia chebula fruit10.1016/j.jtice.2016.09.021 ↗
34. Mesoporous vertical Co3O4 nanosheet arrays on nitrogen-doped graphene foam with enhanced charge-storage performance10.1021/acsami.5b05095 ↗
35. Facile self-cross-linking synthesis of 3D nanoporous Co3O4/carbon hybrid electrode materials for supercapacitors10.1021/acsami.6b03527 ↗
36. Facile synthesis of monodisperse hollow carbon nanospheres using sucrose by carbonization route10.1016/j.matlet.2015.12.022 ↗
37. Synthesis of multilayer graphene balls on mesoporous Co-MCM-41 molecular sieves by chemical vapour deposition method10.1016/j.micromeso.2013.03.035 ↗
38. A study of adhesion forces between vinyl monomers and graphene surfaces for non-covalent functionalization of graphene10.1016/j.carbon.2016.05.049 ↗
39. Gadolinium-doped carbon dots with high quantum yield as an effective fluorescence and magnetic resonance bimodal imaging probe10.1016/j.jallcom.2016.07.226 ↗
40. Synthesis and characterization of graphitic mesoporous carbon using metal-metal oxide by chemical vapor deposition method10.1016/j.micromeso.2015.05.032 ↗
41. Stable determination of paracetamol in the presence of uric acid in human urine sample using melamine grafted graphene modified electrode10.1016/j.jelechem.2015.11.039 ↗
42. Optimization of site specific adsorption of oleylamine capped CuO nanoparticles on MWCNTs for electrochemical determination of guanosine10.1016/j.snb.2013.07.067 ↗
43. High-concentration graphene dispersion stabilized by block copolymers in ethanol10.1016/j.jcis.2017.03.027 ↗
44. Growth of ordered multi-walled carbon nanotubes over mesoporous 3D cubic Zn/Fe-KIT-6 molecular sieves and its use in the fabrication of epoxy nanocomposites10.1016/j.micromeso.2012.08.031 ↗
45. Enhanced electrochemical activity of low temperature solution process synthesized Co3O4 nanoparticles for pseudo-supercapacitors applications10.1016/j.ceramint.2015.09.155 ↗
46. Green synthesis of Co3O4 nanoparticles via Aspalathus linearis: physical properties10.1080/17518253.2015.1082646 ↗
47. Nitrogen-doped carbon dots originating from unripe peach for fluorescent bioimaging and electrocatalytic oxygen reduction reaction10.1016/j.jcis.2016.07.058 ↗
48. High-yield and high-solubility nitrogen-doped carbon dots: formation, fluorescence mechanism and imaging application10.1039/C3RA45762A ↗
49. Enhanced electromagnetic wave absorption performances of Co3O4 nanocube/reduced graphene oxide composite10.1016/j.synthmet.2014.04.012 ↗
50. A sandwich N-doped graphene/Co3O4 hybrid: an efficient catalyst for selective oxidation of olefins and alcohols10.1039/c3ta11672g ↗
51. Surfactant-modified chemically reduced graphene oxide for electrochemical supercapacitors10.1039/C4RA03826F ↗
52. Determination of tetracycline in the presence of major interference inhuman urine samples using polymelamine/electrochemically reduced graphene oxide modified electrode10.1016/j.snb.2016.10.091 ↗
53. MOF derived Co3O4 nanoparticles embedded in N-doped mesoporous carbon layer/MWCNT hybrids: extraordinary bi-functional electrocatalysts for OER and ORR10.1039/C5TA03900B ↗
54. A green and facile synthesis of carbon-incorporated Co3O4 nanoparticles and their photocatalytic activity for hydrogen evolution10.1155/2015/618492 ↗
55. Co@Co3O4@PPD core@bishell nanoparticle-based composite as an efficient electrocatalyst for oxygen reduction reaction10.1002/smll.201503694 ↗
56. One-dimensional porous nanofibers of Co3O4 on the carbon matrix from human hair with superior lithium ion storage performance10.1038/srep12382 ↗
57. Polydopamine@electrochemically reduced graphene oxide-modifiedelectrode for electrochemical detection of free-chlorine10.1016/j.snb.2016.09.025 ↗
58. High lithium storage capacity and rate capability achieved by mesoporous Co3O4 hierarchical nanobundles10.1016/j.jpowsour.2013.08.069 ↗
59. Nanoparticle decorated ultrathin porous nanosheets as hierarchical Co3O4 nanostructures for lithium ion battery anode materials10.1038/srep20592 ↗
60. Asymmetric supercapacitors using 3D nanoporous carbon and cobalt oxide electrodes synthesized from a single metal-organic framework10.1021/acsnano.5b01790 ↗
61. Enhanced photocatalytic performance of the graphene-V2O5 nanocomposite in the degradation of methylene blue dye under direct sunlight10.1021/acsami.5b02715 ↗
62. Ultrafast preparation of three-dimensional porous tin–graphene composites with superior lithium ion storage10.1039/C4TA02021A ↗
63. Facile synthesis of Ni0.85Se on Ni foam for high performance asymmetric capacitors10.1039/C5RA09476C ↗
64. Electrospun carbon nanofibers with in situ encapsulated Co3O4 nanoparticles as electrodes for high-performance supercapacitors10.1021/acsami.5b02787 ↗
65. Green synthesis of nitrogen-doped graphitic carbon sheets with use of Prunus persica for supercapacitor applications10.1016/j.apsusc.2016.10.030 ↗
66. Needle-like Co3O4 anchored on the graphene with enhanced electrochemical performance for aqueous supercapacitors10.1021/am5009369 ↗
67. Facile hydrothermal reduction synthesis of porous Co3O4 nanosheets@RGO nanocomposite and applied as a supercapacitors electrode with enhanced specific capacitance and excellent cycle stability10.1016/j.electacta.2016.11.065 ↗
68. One-pot green synthesis of optically pH-sensitive carbon dots with upconversion luminescence10.1039/c2nr31319g ↗
69. Efficient synthesis of highly fluorescent nitrogen-doped carbon dots for cell imaging using unripe fruit extract of Prunus mume10.1016/j.apsusc.2016.05.054 ↗
70. Selective and sensitive chemosensor for lead ions using fluorescent carbon dots prepared from chocolate by one-step hydrothermal method10.1016/j.snb.2016.06.092 ↗
71. Low-cost synthesis of carbon nanodots from natural products used as a fluorescent probe for the detection of ferrum(III) ions in lake water10.1039/c3ay41715h ↗
72. Impact of surface functionalization of AgNPs on binding and conformational change of hemoglobin (Hb) and hemolytic behavior10.1021/jp5075048 ↗
73. Turn-off fluorescence sensor for the detection of ferric ion in water using green synthesized N-doped carbon dots and its bio-imaging10.1016/j.jphotobiol.2016.03.010 ↗
74. Graphitic carbon quantum dots as a fluorescent sensing platform for highly efficient detection of Fe3+ ions10.1039/c3ra23410j ↗
75. Dual functional N- and S-co-doped carbon dots as the sensor for temperature and Fe3+ ions10.1016/j.snb.2016.09.032 ↗