Synthesis and use of bimetals and bimetal oxides in contaminants removal from water: a review

Fu, Fenglian; Cheng, Zihang; Lu, Jiangbo

doi:10.1039/c5ra13067k

Cited by 58 publications

(28 citation statements)

References 183 publications

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“…Porous FeNi oxide nano sheets have been studied as a catalyst for groundwater contaminant treatment [16]. Nano zero valent Fe/Cu have been used by Zhu et al for the remediation of chromium in soil [17]. Doping iron oxides with metallic elements, e.g.…”

Section: Introductionmentioning

confidence: 99%

Efficient transformation in characteristics of cations supported-reduced graphene oxide nanocomposites for the destruction of trichloroethane

Farooq

Danish

Brusseau

et al. 2017

Applied Catalysis A: General

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Experiments were conducted to investigate the use of graphene-oxide supported metallic nanocomposites for improving the degradation of trichloroethane (TCA) by sodium percarbonate (SPC). Two methods of production, chemical reduction (CR) and solvo-thermal (ST), were tested for preparation of single (Fe) and binary (Fe-Cu) nanocomposites supported by reduced graphene oxide (rGO). A variety of analytical techniques including N2 adsorption Brunauer-Emmett-Teller (BET), x-ray diffraction (XRD), fourier-transfrom infrared spectroscopy (FTIR), and transmisison electron microscopy (TEM) were applied to characterize the physicochemical and microstructural properties of the synthesized nanocomposites. The characterization indicated that the CR method produced nanocomposites that comprised only mesoporous structure. Conversely, both micro and mesoporous structures were present for samples produced with the ST method. The synthesized single and bimetallic composites produced from the ST method showed higher surface areas, i.e. 93.6 m2/g and 119.2 m2/g as compared to the ones synthesized via the CR method, i.e. 13.8 m2/g and 38.0 m2/g respectively. The results of FTIR and XRD analyses confirmed that the ST method produced highly crystalline nanocomposites. SEM and TEM analysis validated that metallic particles with definite morphology well distributed on the surface of rGO. X-ray photoelectron spectroscopy (XPS) analysis confirmed the homogeneity nanocomposites and occurrence of variation in copper oxidation states during degradation process. EDS mapping validate the homogeneous distribution of Cu and Fe at reduced graphene oxide surface. The Fe-Cu/rGO (ST) activated SPC system effectively degraded TCA (92%) in 2.5 h at low nanocomposite dose compared to the Fe-Cu/rGO (CR) and only Fe, for which the maximum degradation efficiencies achieved were 81% and 34%. In conclusion, excellent catalytic characteristics were observed for the ST-synthesized single and bimetallic (Fe/rGO, Fe-Cu/rGO) catalysts. These catalysts were successful in improving the degradation of TCA via activated SPC.

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Section: Introductionmentioning

confidence: 99%

Efficient transformation in characteristics of cations supported-reduced graphene oxide nanocomposites for the destruction of trichloroethane

Farooq

Danish

Brusseau

et al. 2017

Applied Catalysis A: General

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“…The use of nanomaterials for water treatment has attracted much interest in recent decades and thousands of research papers http have been published in this area [1][2][3][4][5]. Nonetheless progress in actual applications has been rather slow [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Removal of Pb(II) and Zn(II) using lime and nanoscale zero-valent iron (nZVI): A comparative study

Wang

et al. 2016

Chemical Engineering Journal

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“…Based on previous studies, although the use of various zerovalent metals such as iron, aluminum, zinc, and so on has been found more interesting, there have been some limitations in the use of these metals alone (29). In a study conducted by Basu et al, the performance of As(V) adsorption of calcined (250°C) synthetic iron(III)-aluminum(III) mixed oxide in the presence of some groundwater ions was evaluated and observed that mixed metal oxides showed greater ability in As (V) removal compared to individual metal oxide (30).…”

Section: The Effect Of Various Elements Constituting the Media On Thementioning

confidence: 99%

The Use of Acid-Washed Iron/Aluminum Mixture in Permeable Reactive Barrier for the Elimination of Different Heavy Metal Ions From Water

Samadi¹,

Asgari²,

Rahmani³

et al. 2017

Avicenna J Environ Health Eng

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In this experimental study, the performance of a fixed bed column containing a mixture of iron and aluminum modified with acid, as a reaction bed, was evaluated for the removal of heavy metals of cadmium, nickel, and copper. The tests were carried out by feeding the columns with aqueous solutions at the concentration of 100 mg/L using four iron/aluminum granular mixtures at various volume ratios (100/0, 50/50, 75/25, 25/75 and 0/100), and pH (3, 5, 7) for a total of 28 column tests. Results showed that metal ion removal was mainly accomplished via redox reactions that initiated the precipitation of mineral phases. At pH 5 and flow rate of 1 mL/min, the removal efficiency of cadmium, nickel, and copper at the 50/50 ratio of modified iron and aluminum was obtained higher than 99% and this removal efficiency could be kept about 50 hours. It seems that the column with the volume ratio of 75/25 of iron and aluminum mixture was the most efficient column for removing the heavy metals with the most suitable iron content and also high hydraulic performance due to the suitable aluminum content. It is therefore seen that the mixture of iron and aluminum can be used as an environmentally and economically viable remediation technology for the subsequent prevention of groundwater contamination.

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Synthesis and use of bimetals and bimetal oxides in contaminants removal from water: a review

Abstract: This paper gives an overview of the recent advances of the synthesis methods of bimetals and bimetal oxides and applying them in contaminant removal from water.

Cited by 58 publications

References 183 publications

Efficient transformation in characteristics of cations supported-reduced graphene oxide nanocomposites for the destruction of trichloroethane

Efficient transformation in characteristics of cations supported-reduced graphene oxide nanocomposites for the destruction of trichloroethane

Removal of Pb(II) and Zn(II) using lime and nanoscale zero-valent iron (nZVI): A comparative study

The Use of Acid-Washed Iron/Aluminum Mixture in Permeable Reactive Barrier for the Elimination of Different Heavy Metal Ions From Water

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