Reduced graphene oxide/spinel ferrite nanocomposite as an efficient adsorbent for the removal of Pb (II) from aqueous solution

2021 ◽  
Author(s):  
Radhika R. Nair ◽  
B. Carmel Jeeva Mary ◽  
J. Judith Vijaya ◽  
A. Mustafa ◽  
L. Khezami ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Spinel Ferrite ◽  
Reduced Graphene ◽  
Oxide Spinel ◽  
Efficient Adsorbent

Reduced graphene oxide-spinel ferrite nano-hybrids as magnetically separable and recyclable visible light driven photocatalyst

2019 ◽  
Vol 254 ◽  
pp. 1-9 ◽  
Author(s):  
Hafsa Javed ◽  
Abdul Rehman ◽  
Sara Mussadiq ◽  
Muhammad Shahid ◽  
Muhammad Azhar Khan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Spinel Ferrite ◽  
Reduced Graphene ◽  
Visible Light Driven ◽  
Oxide Spinel ◽  
Magnetically Separable

Self-supported 3D reduced graphene oxide for solid-phase extraction: An efficient and low-cost sorbent for environmental contaminants in aqueous solution

Talanta ◽  
2021 ◽  
pp. 122750
Author(s):  
Raimara de Souza Gomes ◽  
Anderson Thesing ◽  
Jacqueline Ferreira Leite Santos ◽  
Andreia Neves Fernandes
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Reduced Graphene Oxide ◽  
Solid Phase ◽  
Low Cost ◽  
Environmental Contaminants ◽  
Phase Extraction ◽  
Reduced Graphene

scholarly journals Superparamagnetic ZnFe2O4 Nanoparticles-Reduced Graphene Oxide-Polyurethane Resin Based Nanocomposites for Electromagnetic Interference Shielding Application

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1112
Author(s):  
Raghvendra Singh Yadav ◽  
Anju ◽  
Thaiskang Jamatia ◽  
Ivo Kuřitka ◽  
Jarmila Vilčáková ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electromagnetic Waves ◽  
Spinel Ferrite ◽  
Ferrite Nanoparticles ◽  
Resin Matrix ◽  
Polyurethane Resin ◽  
Reduced Graphene ◽  
Znfe2o4 Nanoparticles ◽  
Electromagnetic Pollution

Superparamagnetic ZnFe2O4 spinel ferrite nanoparticles were prepared by the sonochemical synthesis method at different ultra-sonication times of 25 min (ZS25), 50 min (ZS50), and 100 min (ZS100). The structural properties of ZnFe2O4 spinel ferrite nanoparticles were controlled via sonochemical synthesis time. The average crystallite size increases from 3.0 nm to 4.0 nm with a rise of sonication time from 25 min to 100 min. The change of physical properties of ZnFe2O4 nanoparticles with the increase of sonication time was observed. The prepared ZnFe2O4 nanoparticles show superparamagnetic behavior. The prepared ZnFe2O4 nanoparticles (ZS25, ZS50, and ZS100) and reduced graphene oxide (RGO) were embedded in a polyurethane resin (PUR) matrix as a shield against electromagnetic pollution. The ultra-sonication method has been used for the preparation of nanocomposites. The total shielding effectiveness (SET) value for the prepared nanocomposites was studied at a thickness of 1 mm in the range of 8.2–12.4 GHz. The high attenuation constant (α) value of the prepared ZS100-RGO-PUR nanocomposite as compared with other samples recommended high absorption of electromagnetic waves. The existence of electric-magnetic nanofillers in the resin matrix delivered the inclusive acts of magnetic loss, dielectric loss, appropriate attenuation constant, and effective impedance matching. The synergistic effect of ZnFe2O4 and RGO in the PUR matrix led to high interfacial polarization and, consequently, significant absorption of the electromagnetic waves. The outcomes and methods also assure an inventive and competent approach to develop lightweight and flexible polyurethane resin matrix-based nanocomposites, consisting of superparamagnetic zinc ferrite nanoparticles and reduced graphene oxide as a shield against electromagnetic pollution.

scholarly journals Transformation of hydroquinone to benzoquinone mediated by reduced graphene oxide in aqueous solution

Carbon ◽  
2015 ◽  
Vol 89 ◽  
pp. 74-81 ◽  
Author(s):  
Chunmei Li ◽  
Lingyun Li ◽  
Lixiang Sun ◽  
Zhiguo Pei ◽  
Jieli Xie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

Polyaniline-coated reduced graphene oxide as an efficient adsorbent for the removal of malachite green from water samples

2018 ◽  
Vol 76 (10) ◽  
pp. 5269-5283 ◽  
Author(s):  
Armaghan Ghahramani ◽  
Mohammad Gheibi ◽  
Mohammad Eftekhari
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Malachite Green ◽  
Water Samples ◽  
Reduced Graphene ◽  
Efficient Adsorbent

Electrochemical detection of reduced graphene oxide nanoparticles in aqueous solution

2018 ◽  
Vol 44 (6) ◽  
pp. 3753-3760 ◽  
Author(s):  
Harim Kwon ◽  
Ji-Hyeon Jeong ◽  
Byung-Kwon Kim ◽  
Jun Hui Park
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrochemical Detection ◽  
Oxide Nanoparticles ◽  
Reduced Graphene

Cd-Gd-doped nickel spinel ferrite nanoparticles and their nanocomposites with reduced graphene oxide for catalysis and antibacterial activity studies

2020 ◽  
Author(s):  
Abdur Rahman ◽  
Sonia Zulfiqar ◽  
Ain Ul Haq ◽  
Ibrahim A. Alsafari ◽  
Umair Yaqub Qazi ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Spinel Ferrite ◽  
Ferrite Nanoparticles ◽  
Reduced Graphene

Synthesis and application of magnetic reduced graphene oxide composites for the removal of bisphenol A in aqueous solution—a mechanistic study

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102348-102358 ◽  
Author(s):  
Penglei Wang ◽  
Xin Zhou ◽  
Yagang Zhang ◽  
Lulu Wang ◽  
Keke Zhi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Bisphenol A ◽  
Reduced Graphene Oxide ◽  
Mechanistic Study ◽  
Reduction Degree ◽  
Reduced Graphene ◽  
Oxide Composites ◽  
Magnetic Reduced Graphene Oxide

Magnetic reduced graphene oxide composites (MRGO) with different reduction degree for removal of bisphenol A from aqueous solution

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