A magnetic nanocomposite optosensing probe based on porous graphene, selective polymer and quantum dots for the detection of cefoperazone in milk

2021 ◽  
Vol 171 ◽  
pp. 106838
Author(s):  
Nuntanut Chaitong ◽  
Nutnicha Chansud ◽  
Naphatsakorn Orachorn ◽  
Warakorn Limbut ◽  
Opas Bunkoed
Keyword(s):  
Quantum Dots ◽  
Magnetic Nanocomposite ◽  
Porous Graphene

Magnetic nanocomposite with fluorescence enhancement effect based on amino acid coated-Fe3O4 functionalized with quantum dots

2020 ◽  
Vol 251 ◽  
pp. 123082
Author(s):  
Arturo I. Pavón-Hernández ◽  
Eustolia Rodríguez-Velázquez ◽  
Manuel Alatorre-Meda ◽  
José Trinidad Elizalde Galindo ◽  
Francisco Paraguay-Delgado ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Amino Acid ◽  
Fluorescence Enhancement ◽  
Magnetic Nanocomposite ◽  
Enhancement Effect

Synthesis and characterization of halloysite/graphene quantum dots magnetic nanocomposite as a new adsorbent for Pb(II) removal from water

2020 ◽  
Vol 300 ◽  
pp. 112345 ◽  
Author(s):  
Jamileh Zare Pirhaji ◽  
Farid Moeinpour ◽  
Abolghasem Mirhoseini Dehabadi ◽  
Seyed Ali Yasini Ardakani
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Magnetic Nanocomposite ◽  
Synthesis And Characterization

Facile low-temperature synthesis of hematite quantum dots anchored on a three-dimensional ultra-porous graphene-like framework as advanced anode materials for asymmetric supercapacitors

2016 ◽  
Vol 4 (29) ◽  
pp. 11247-11255 ◽  
Author(s):  
Yunyong Li ◽  
Haiyan Zhang ◽  
Shanxing Wang ◽  
Yingxin Lin ◽  
Yiming Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Low Temperature ◽  
Electrochemical Performance ◽  
Anode Materials ◽  
Three Dimensional ◽  
Asymmetric Supercapacitors ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Porous Graphene

Hematite quantum dots anchored on a 3D ultraporous graphene-like framework as anode materials showed superior electrochemical performance for asymmetric supercapacitors.

Femtosecond laser ablation of highly oriented pyrolytic graphite: a green route for large-scale production of porous graphene and graphene quantum dots

Nanoscale ◽  
2014 ◽  
Vol 6 (4) ◽  
pp. 2381-2389 ◽  
Author(s):  
Paola Russo ◽  
Anming Hu ◽  
Giuseppe Compagnini ◽  
Walter W. Duley ◽  
Norman Y. Zhou
Keyword(s):  
Quantum Dots ◽  
Femtosecond Laser ◽  
Large Scale ◽  
Coal Gasification ◽  
Pyrolytic Graphite ◽  
Graphene Quantum Dots ◽  
Femtosecond Laser Ablation ◽  
Scale Production ◽  
Porous Graphene ◽  
Large Scale Production

Large scale production of porous graphene and graphene quantum dots through femtosecond laser exfoliation and coal gasification.

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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