The development of a ternary nanocomposite for the removal of Cr(vi) ions from aqueous solutions

The aim is to develop a ternary nanocomposite of polyaniline/2-acrylamido-2-methylpropanesulfonic acid-capped silver nanoparticles/graphene oxide quantum dots as an efficient adsorbent for the removal of the highly toxic hexavalent chromium (Cr(vi)) from polluted water.

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Highly Luminescent Ternary Nanocomposite of Polyaniline, Silver Nanoparticles and Graphene Oxide Quantum Dots

Scientific Reports ◽

10.1038/s41598-019-53584-6 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 8

Author(s):

Azza Shokry ◽

M. M. A. Khalil ◽

Hesham Ibrahim ◽

Moataz Soliman ◽

Shaker Ebrahim

Keyword(s):

Quantum Dots ◽

Silver Nanoparticles ◽

Graphene Oxide ◽

Chemical Reduction ◽

Oxidative Polymerization ◽

Sensing Applications ◽

Ternary Nanocomposite ◽

Average Size ◽

Graphene Oxide Quantum Dots ◽

20 Nm

AbstractQuantum dots (QDs) with photostability show a potential application in optical sensing and biological imaging. In this work, ternary nanocomposite (NC) of high fluorescent polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide quantum dots (PANI/Ag (AMPSA)/GO QDs) have been synthesized by in situ chemical oxidative polymerization of aniline in the presence of Ag (AMPSA) NPs and GO QDs. Ag (AMPSA) NPs and GO QDs were prepared by AgNO3 chemical reduction and glucose carbonization methods, respectively. The prepared materials were characterized using UV-visible, Fourier transform infrared (FTIR), photoluminescence and Raman spectroscopies, X-Ray diffractometer (XRD) and high- resolution transmission electron microscopy (HRTEM). HRTEM micrographs confirmed the preparation of GO QDs with an average size of 15 nm and Ag (AMPSA) NPs with an average size of 20 nm. PANI/Ag (AMPSA)/GO QDs NC showed high and stable emission peak at 348 nm. This PANI/Ag (AMPSA)/GO QDs NC can emerge as a new class of fluorescence materials that could be suitable for practical sensing applications.

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Selective removal of lead ions from aqueous solutions using 1,8-dihydroxyanthraquinone (DHAQ) functionalized graphene oxide; isotherm, kinetic and thermodynamic studies

RSC Advances ◽

10.1039/c7ra13603j ◽

2018 ◽

Vol 8 (11) ◽

pp. 5685-5694 ◽

Cited By ~ 9

Author(s):

Mohammad Khazaei ◽

Simin Nasseri ◽

Mohammad Reza Ganjali ◽

Mehdi Khoobi ◽

Ramin Nabizadeh ◽

...

Keyword(s):

Graphene Oxide ◽

Aqueous Solutions ◽

Selective Removal ◽

Lead Ions ◽

Polluted Water ◽

Functionalized Graphene ◽

Functionalized Graphene Oxide ◽

Thermodynamic Studies ◽

Kinetic And Thermodynamic Studies ◽

Efficient Adsorbent

The Fe3O4@DHAQ_GO nanocomposite can serve as an efficient adsorbent for the selective removal of lead from polluted water.

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Controlling the cooperative self-assembly of graphene oxide quantum dots in aqueous solutions

RSC Advances ◽

10.1039/c5ra09704e ◽

2015 ◽

Vol 5 (71) ◽

pp. 57425-57432 ◽

Cited By ~ 21

Author(s):

Salman Hassanzadeh ◽

Karin H. Adolfsson ◽

Minna Hakkarainen

Keyword(s):

Quantum Dots ◽

Graphene Oxide ◽

Aqueous Solutions ◽

Self Assembly ◽

Association Behavior ◽

Dilute Aqueous Solutions ◽

Graphene Oxide Quantum Dots

The 3D supramolecular association behavior of the synthesized 2D graphene oxide quantum dots (GOQDs) could be smartly controlled in dilute aqueous solutions to tune their final properties.

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