Effective removal of Pb(<scp>ii</scp>) using a graphene@ternary oxides composite as an adsorbent in aqueous media

La, Duong Duc; Thi, Hoai Phuong Nguyen; Nguyen, Tuan Anh; Bhosale, Sheshanath V.

doi:10.1039/c7nj03064a

Cited by 27 publications

(8 citation statements)

References 63 publications

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“…Considered as one of the most toxic kinds of ions, Pb(II) can severely harm human bodies. Therefore, the efficient separation/removal of Pb(II) from aqueous solutions is highly important and has attracted much attention. − In particular, Pb(II) separation using graphene oxide (GO) is the subject of numerous investigations. In separation technologies, GO has been shown to be a highly promising material, , used for gas and ion separation, ,− water purification, and desalination, − with outstanding efficiency.…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide as a Pb(II) Separation Medium: Has Part of the Story Been Overlooked?

Nguyen

Zhang

Prabhakaran

et al. 2021

JACS Au

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A key problem associated with the design of graphene oxide (GO) materials and their tuning for nanoscale separations is how specific functional groups influence the competitive adsorption of solvated ions and water at liquid/graphene interfaces. Computation accompanied by experiment shows that OH and COOH exert an influence on water adsorption properties stronger than that of O and H functional groups. The COO – anions, following COOH deprotonation, stabilize Pb(II) through strong electrostatic interactions. This suggests that, among the functional groups under study, COOH offers the best Pb(II) adsorption capacity and the ability to regenerate the sorbent through a pH swing. In line with computation, striking experimental observations revealed that a substantial increase in Pb(II) adsorption occurs with increasing pH. Our findings provide a systematic framework for controlled design and implementation of regenerable C-based sorbents used in separations and desalination.

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Section: Introductionmentioning

confidence: 99%

Graphene Oxide as a Pb(II) Separation Medium: Has Part of the Story Been Overlooked?

Nguyen

Zhang

Prabhakaran

et al. 2021

JACS Au

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“…Different carbon materials like porous carbon, carbon nanotubes and fullerene have been extensively used for advanced treatment of wastewaters (Gupta and Saleh, 2013). Recently, graphene-based material has been successfully utilized as an adsorbent in the field of nano sciences (Amiri et al, 2018;Mondal et al, 2018), specifically for environmental remediation (Achazhiyath Edathil et al, 2019;La et al, 2017). This led to the development of carbon-based composite adsorbents surface functionalized with various metal oxides that cater to the removal of specific contaminants.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive oxidation of sulfides catalysed by δ-MnO2 decorated porous graphitic carbon composite

Edathil

Kannan

Banat

2020

Environmental Pollution

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“…Therefore, a cost effective, potential and convenient decontamination technology for wastewater treatment is highly desirable. The high efficiency, cost-effective, and simple operation makes adsorption technology one of the most promising technology for the effective removal of the heavy metal ions from the aqueous solution which adsorb metallic ions at solid-liquid interfaces [41][42][43][44][45][46][47][48][49]. On the other hand, adsorption technology has several challenges, such as selective recovery and reuse of valuable adsorbents and pollutants in the presence of humic substances [50,51].…”

Section: Introductionmentioning

confidence: 99%

Graphene Composites for Lead Ions Removal from Aqueous Solutions

2019

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The indiscriminate disposal of non-biodegradable, heavy metal ionic pollutants from various sources, such as refineries, pulp industries, lead batteries, dyes, and other industrial effluents, into the aquatic environment is highly dangerous to the human health as well as to the environment. Among other heavy metals, lead (Pb(II)) ions are some of the most toxic pollutants generated from both anthropogenic and natural sources in very large amounts. Adsorption is the simplest, efficient and economic water decontamination technology. Hence, nanoadsorbents are a major focus of current research for the effective and selective removal of Pb(II) metal ions from aqueous solution. Nanoadsorbents based on graphene and its derivatives play a major role in the effective removal of toxic Pb(II) metal ions. This paper summarizes the applicability of graphene and functionalized graphene-based composite materials as Pb(II) ions adsorbent from aqueous solutions. In addition, the synthetic routes, adsorption process, conditions, as well as kinetic studies have been reviewed.

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Effective removal of Pb(ii) using a graphene@ternary oxides composite as an adsorbent in aqueous media

Abstract: A one-pot hydrothermal method to prepare a graphene@Fe–Mg–Cu ternary oxide composite and the proposed adsorption mechanism for removal of Pb(ii) ions.

Cited by 27 publications

References 63 publications

Graphene Oxide as a Pb(II) Separation Medium: Has Part of the Story Been Overlooked?

Graphene Oxide as a Pb(II) Separation Medium: Has Part of the Story Been Overlooked?

Adsorptive oxidation of sulfides catalysed by δ-MnO2 decorated porous graphitic carbon composite

Graphene Composites for Lead Ions Removal from Aqueous Solutions

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