Synthesis and characterization of reduced graphite oxide–polymer composites and their application in adsorption of lead

Olanipekun, Opeyemi; Oyefusi, Adebola; Neelgund, Gururaj M.; Oki, Aderemi

doi:10.1016/j.saa.2015.04.071

Cited by 22 publications

(8 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2b) exhibited type IV isotherms, as defined by IUPAC classification1617. A hysteresis loop of type H3 in RGO-Zr at the relative pressures [P/P o ] ranging from 0.45 to 1.00 indicated the possible presence of mesoporous structure1718.…”

Section: Resultsmentioning

confidence: 96%

“…2h) displayed two bands at 1343 and 1600 cm −1 , corresponding to the D and G modes, respectively16. The G-band was attributed to the in-plane vibration of sp 2 bonded carbon atoms, while the D-band was associated with the presence of defects in the graphitic layers1635. The spectrum of RGO-Zr (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Carbonaceous based materials, such as activated carbon (AC), carbon nanotubes, porous carbon and graphene oxide, have attracted tremendous interests due to their superior properties, including chemical stability, large specific surface area, abundant pore size distribution, and feasibility for mass production116. Graphene oxide (GO) has a stable layered structure with various oxygen-containing functional groups like hydroxyl, carbonyl, epoxy and carboxylic fragments attached directly to the carbons or at the layers edges1718.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Adsorption of phosphate in water using one-step synthesized zirconium-loaded reduced graphene oxide

Luo

Wang

Shu

et al. 2016

Sci Rep

View full text Add to dashboard Cite

In this account, a one-step green hydrothermal method for zirconium-loaded reduced graphene oxide (RGO-Zr) adsorbent was developed in pure water. It is based on the formation of initially strong-coupling RGO-Zr nanocomposites followed by in situ reduction of GO to RGO during the hydrothermal treatment. The phosphate adsorption performance of the as-prepared nanocomposites was investigated in aqueous environment under various conditions. The characterization results of RGO-Zr nanocomposites showed that ZrO2 was successfully integrated onto the RGO sheets in amorphous. The data from equilibrium phosphate adsorption on RGO-Zr revealed that the adsorption kinetics followed a pseudo-second-order kinetic model, where the adsorption isotherm fitted the Langmuir isotherm model with a maximum adsorption capacity of 27.71 mg P/g at pH 5 and 298 K. The improved phosphate adsorption on RGO-Zr was caused by the dispersion of ZrO2 on the RGO surface. Furthermore, the phosphate adsorption was found insensitive to the increase in pH while it was sensitive to the increase in temperature. The coexisting anions of SO42−, F−, Cl−, NO3− and CO32− affected the phosphate adsorption in a different way. Results suggest that the present RGO-Zr adsorbent has the potential for controlling phosphorus pollution in water.

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of phosphate in water using one-step synthesized zirconium-loaded reduced graphene oxide

Luo

Wang

Shu

et al. 2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Graphite oxide (GO): GOs are known as pseudo-two dimensional solid materials with covalent between the layers. Graphite oxide is often prepared by heat treatment of graphite flakes with oxidizing agents such that polar groups are introduced on the graphite surface [5,15,16]. This treatment also widens the interlayer spacing between the graphene sheets.…”

Section: Modification Of Graphitementioning

confidence: 99%

Thermal Conductivity of Graphite-Based Polymer Composites

Mokhena¹,

Mochane²,

Sefadi³

et al. 2018

Impact of Thermal Conductivity on Energy Technologies

View full text Add to dashboard Cite

It is well known that polymers are insulators, which limit their usage in other applications where thermal conductivity is essential for heat to be efficiently dissipated or stored. In the past, the improvement in the thermal conductivity of polym.rs with conductive fillers has been investigated by researchers. Carbon-based materials such as graphite, graphene and carbon nanotube, which feature excellent properties such as a high mechanical strength, a high thermal conductivity and a tailorable electronic configuration, have been added to different polymer matrices to enhance their thermal conductivity. Amongst others, graphite more especially expanded graphite merits special interest because of its abundant availability at a relatively low cost and lightweight when compared to other carbon allotropes. Herein, we describe the thermal conductivity of polymer/graphite composites and their applications.

show abstract

“…Graphene as the nanoadsorbent mainly includes three forms: pristine graphene, graphene oxide (GO), and reduced graphene oxide (rGO) [58]. GO is an oxidized form of graphene, containing various oxygen-containing groups, such as epoxide, carbonyl, carboxyl, and hydroxyl groups [59][60][61][62][63]. Since the oxygen groups break the double bonds holding the carbon atoms together, GO loses its electrical conductivity.…”

Section: Graphene-based Nanoadsorbentsmentioning

confidence: 99%

Carbon nanotubes, graphene, and their derivatives for heavy metal removal

Guo

et al. 2017

Adv Compos Hybrid Mater

171

View full text Add to dashboard Cite

Carbon nanoadsorbents have attracted tremendous interest for metal ion removal from wastewater due to their extraordinary aspect ratios, surface areas, porosities, and reactivities. However, challenges still exist as they suffer from subpar dispersion and recovery, tending to aggregate, and so on. Thus, significant research efforts focus on modification of these carbon nanomaterials to increase the dispersions and recoveries, while maintaining or even enhancing the desirable properties. This review aims to give an in-depth look at recent and impactful advances in metal ion adsorption applications involving these modified carbon nanostructures. Here, the advanced design and testing of modified carbon nanostructures for metal ion removal are emphasized with comprehensive examples, and various adsorption behaviors and mechanisms are discussed, which are hoped to help the development of more effective adsorbents for water treatment.

show abstract

Synthesis and characterization of reduced graphite oxide–polymer composites and their application in adsorption of lead

Cited by 22 publications

References 36 publications

Adsorption of phosphate in water using one-step synthesized zirconium-loaded reduced graphene oxide

Adsorption of phosphate in water using one-step synthesized zirconium-loaded reduced graphene oxide

Thermal Conductivity of Graphite-Based Polymer Composites

Carbon nanotubes, graphene, and their derivatives for heavy metal removal

Contact Info

Product

Resources

About