Rapid and highly selective removal of lead from water using graphene oxide-hydrated manganese oxide nanocomposites

Wan, Shunli; He, Feng; Wu, Jianfei; Wan, Wubo; Gu, Yawei; Gao, Bin

doi:10.1016/j.jhazmat.2016.04.014

Cited by 162 publications

(47 citation statements)

References 56 publications

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“…In this case, the GO can capture lead from solution, while the platinum allows added hydrogen peroxide to be converted to H 2(g) and O 2(g) that act as propellants and the nickel facilitates magnetic control of the microbots. [195] Pb GO and manganese oxide NPs 553 [196] (i) Ni (ii) Pb (iii) Zn…”

Section: Emerging Composite Graphene Materials For Enhanced Water Purmentioning

confidence: 99%

Activated Carbon, Carbon Nanotubes and Graphene: Materials and Composites for Advanced Water Purification

Sweetman

May²,

Mebberson³

et al. 2017

172

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Abstract:To ensure the availability of clean water for humans into the future, efficient and cost-effective water purification technology will be required. The rapidly decreasing quality of water and the growing global demand for this scarce resource has driven the pursuit of high-performance purification materials, particularly for application as point-of-use devices. This review will introduce the main types of natural and artificial contaminants that are present in water and the challenges associated with their effective removal. The efficiency and performance of recently developed materials for water purification, with a focus on activated carbon, carbon nanotubes and graphene will be discussed. The recent advances in water purification using these materials is reviewed and their applicability as point-of-use water purification systems discussed.

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Section: Emerging Composite Graphene Materials For Enhanced Water Purmentioning

confidence: 99%

Activated Carbon, Carbon Nanotubes and Graphene: Materials and Composites for Advanced Water Purification

Sweetman

May²,

Mebberson³

et al. 2017

172

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“…Manganese oxide (MnO x ) has received more and more attentions in water treatment (Allard, Gutierrez, Fontaine, Croue, & Gallard, 2017;Chen, Wang, Zhang, Wu, & Wang, 2018;Post, 1999), focusing mainly on two respects. One is the removal of heavy metals, such as As 5+ (Driehaus, Seith, & Jekel, 1995;Hou et al, 2016), Pb 2+ (Chen et al, 2017;Wan et al, 2016;Wang et al, 2015), and Cr 6+ (Landrot, Gindervogel, Livi, Fitts, & Sparks, 2012;Tang, Webb, Estes, & Hansel, 2014), and the other is to remove the organic matters, for example, phenols (Selig, Keinath, & Weber, 2003;Ulrich & Stone, 1989), anilines (Laha & Luthy, 1990;Park, Dec, Kim, & Bollag, 1999), low-molecular-weight acids (Xyla et al, 1992), and pesticide (Šťastný et al, 2016). Our previous research has found that MnO x film coated on silica sands in aerobic filter had strong catalytic activity for ammonium removal (Cheng, Huang, Sun, & Shi, 2017;Guo, Huang, Wen, & Cao, 2017;Zhang, Huang, et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Removing ammonium from underground water by strengthening Mn(III) generation through electrochemical reduction

Shi

et al. 2019

Water Environment Research

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Manganese oxide has been found to be an active catalyst for ammonium oxidation. This work presented an innovative electrochemical system to improve the removal efficiency of ammonium by strengthening the generation of Mn(III). In this system, the manganese oxide coating activated carbon (MnOx/AC) particles were used as the cathode of a fuel cell (MnOx/AC‐Ca). Compared to the conventional method using MnOx in a nonelectrochemical system (MnOx/AC‐Control), the ammonium removal efficiency was doubled in the MnOx/AC‐Ca system. Conversely, when using MnOx as the anode of a fuel cell (MnOx/AC‐An), the ammonium removal efficiency was lower than that in the MnOx/AC‐Control system. XPS results showed that Mn(III) in the MnOx/AC‐Ca system was obviously higher than that in the MnOx/AC‐Control system. Conversely, more Mn(IV), which was less active than Mn(III) for NH4+-N removal, was detected in the MnOx/AC‐An system. The possible pathway for the ammonium removal by MnOx was that Mn(III) reacted with NH4+-N and produced Mn2+. These Mn2+ were then reoxidized into new active MnOx under the self‐catalysis of MnOx, resulting in a continuous ammonium removal. Moreover, nitrite, the intermediate product of ammonium oxidation, can be oxidized by MnOx, thus helping the ammonium oxidation process. Practitioner points Mn(III) was generated by using MnOx as the cathode of fuel cells. Ammonium removal efficiency went up with the content of Mn(III) in MnOx. Mechanism of the NH4+-N removal by MnOx was discussed.

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“…Wan et al . 16 reported a nanocomposite graphene oxide-manganese oxide with an outstanding sorption selectivity for Pb(II) when high amounts of Ca(II) coexisted. Moreover, the separation difficulty of the GO-loaded metal ions from liquid phase restricts the practical application of GO.…”

Section: Introductionmentioning

confidence: 99%

Facile preparation and adsorption performance of graphene oxide-manganese oxide composite for uranium

Yang

Zhu

Huang

2018

Sci Rep

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To overcome the limits of low adsorption capacity and the separation difficulty of solid from liquid phase for graphene oxide (GO), a novel nanocomposite graphene oxide-manganese oxide (GOMO) was facilely fabricated under ultrasonic radiation. The structures and micro-morphology of the products were characterized by fourier transform infrared (FT-IR) spectroscopy, raman shift spectroscopy, X-ray diffraction (XRD) pattern and scanning electron microscopy (SEM). The effect of solution pH, adsorbent dose, contact time, initial uranium concentration, ionic strength and temperature on uranium removal efficiency was studied by batch adsorption experiments. The product GOMO was used to examine the feasibility of the removal of high salt content in uranium-containing wastewater. The adsorption results were fitted using the Langmuir and Freundlich isotherm models. The kinetic parameters in the adsorption process were measured and fitted. Five adsorption/desorption cycles were performed using 3 M HNO3 as the regenerant in order to evaluate the reuse of GOMO.

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Rapid and highly selective removal of lead from water using graphene oxide-hydrated manganese oxide nanocomposites

Cited by 162 publications

References 56 publications

Activated Carbon, Carbon Nanotubes and Graphene: Materials and Composites for Advanced Water Purification

Activated Carbon, Carbon Nanotubes and Graphene: Materials and Composites for Advanced Water Purification

Removing ammonium from underground water by strengthening Mn(III) generation through electrochemical reduction

Facile preparation and adsorption performance of graphene oxide-manganese oxide composite for uranium

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