Efficient transformation of trichloroethylene activated through sodium percarbonate using heterogeneous zeolite supported nano zero valent iron-copper bimetallic composite

Danish, Muhammad; Gu, Xiaoli; Lu, Shuguang; Ahmad, Ayyaz; Naqvi, Muhammad; Farooq, Usman; Zhang, Xiang; Fu, Xiaori; Miao, Zhouwei; Xue, Yunfei

doi:10.1016/j.cej.2016.09.051

Cited by 107 publications

(31 citation statements)

References 45 publications

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“…Nowadays, most of the nanoparticles are prepared by sodium borohydride, but they are classified from the monocrystals that cause significant contamination if used extensively. It is, therefore, necessary to find alternative, low-cost, environmentally friendly methods (Zhu et al 2018;Danish et al 2017). Traditional methods adopted for the synthesis of FeNPs or CuNPs by sonochemical synthesis, vacuum sputtering, physical method (attrition), and thermal decomposition.…”

Section: Introductionmentioning

confidence: 99%

“…These methods have many limitations viz. high temperature and pressure or energy requirement, so they are relatively expensive (Devatha et al 2016;Danish et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Ficus Benjamina leaves' extract provides a greener, economic, and fast method for the synthesis of nanoparticles with an appropriate size (Puente et al 2019;Al-Qahtani 2017). So far, copper and Fe nanoparticles prepared by green synthesis have proven to be efficient to remove many contaminants (Zhu et al 2018;Danish et al 2017). Although studies have demonstrated the feasibility of the green synthesis of nZVI, the application of green synthetic iron-copper bimetallic nanoparticles has rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

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Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Abdelaziz¹,

Farag

Abdel‐Gawad

2019

Int J Environ Res

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Green synthesis of nanoparticles is an eco-friendly treatment technique. Bimetallic nano zero-valent Fe/Cu was successfully prepared by green synthesis by Ficus Benjamina leaves (FB-ZVI/Cu). The nanoscale FB-ZVI/Cu was characterized by scanning electron microscope, Fourier transform infrared spectroscopy, and dispersive X-ray spectroscopy. The characterization revealed that synthesis and presence of iron-copper nanoparticles and biomolecules which could help in capping the bimetallic nanoparticles. Subsequently, nanoscale zero-valent Fe/Cu particles were used to remove carbamazepine from the aqueous medium under varying experimental conditions, including pH, initial carbamazepine concentration, Fe/CuNPs dose, stirring rate, and contact time. The removal efficiency of carbamazepine reached 95% under the condition of dose 0.4 g L −1 , time 20 min, and pH 5. The results were analyzed according to the Freundlich and Langmuir adsorption isotherms. The adsorption data are more appropriate by the Langmuir adsorption model (R 2 = 0.998) with q max = 26.15 mg g −1. Overall, FB-nZVFe/Cu is a promising green substance to remove carbamazepine from aqueous solutions. The effect of different operating parameters was investigated using linear regression analysis, they were found to account for more than 97% of the variables affecting the removal process. Article Highlights • Bimetallic nZVFe/Cu was synthesized using the Ficus Benjamina leaves' extracts. • Nanoparticles were characterized by SEM, EDAX, and FTIR. • The green-synthesized FB-nZVFe/Cu nanoparticles can remove carbamazepine from aqueous solutions. • Removing mechanism based on adsorption and reduction is proposed. • A high removal percentage of carbamazepine was 95%. • Lower FB-nZVI/Cu PZC values.

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Section: Introductionmentioning

confidence: 99%

“…These methods have many limitations viz. high temperature and pressure or energy requirement, so they are relatively expensive (Devatha et al 2016;Danish et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Abdelaziz¹,

Farag

Abdel‐Gawad

2019

Int J Environ Res

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“…Doping iron oxides with metallic elements, e.g. Ce, Ti, Co, Zr and Mn, to prepare bimetallic catalysts is a current focus of research in Fenton chemistry [18]. …”

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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“…Sodium percarbonate (Na 2 CO 3 .1.5H 2 O 2 , SPC) is a solid phase oxidant that has received tremendous attention owing to its potential as a substitute for hydrogen peroxide (H 2 O 2 ) for in-situ chemical oxidation (ISCO) processes (Danish et al, 2017a;Danish et al, 2016c;Fu et al, 2017). SPC is a preferred chemical oxidant compared to H 2 O 2 because it is easier and safer to be stored, handled, and transported, as well as effective over a wider range of pH.…”

Section: Introductionmentioning

confidence: 99%

The impact of surface properties and dominant ions on the effectiveness of G-nZVI heterogeneous catalyst for environmental remediation

Farooq

Danish

Lyu

et al. 2019

Science of The Total Environment

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The surface properties of nanocomposites are influenced by the existence of inorganic species that may affect its performance for specific catalytic applications. The impact of different ionic species on particular catalytic activity had not been investigated to date. In this study, the surface charge (zeta potential) of graphene-oxide-supported nano zero valent iron (G-nZVI) was tested in definitive cationic (Na + , K + , Ca 2+ and Mg 2+) and anionic (Br − , Cl − , NO 3 − , SO 4 2− , and HCO 3 −) environments. The efficiency of G-nZVI catalyst was inspected by measuring the generation of reactive oxygen species (ROS) for the degradation of 1,1,1-trichloroethane (TCA) in sodium percarbonate (SPC) system. Tests conducted using probe compounds confirmed the generation of OH • and O 2 •− radicals in the system. In addition, the experiments performed using scavenging agents certified that O 2 •− were primary radicals responsible for TCA removal, along with prominent contribution from OH • radicals. The study confirmed that G-nZVI catalytic capability for TCA degradation is notably affected by various cationic species. The presence of Ni 2+ and Cu 2+ significantly enhanced (94%), whereas Na + and K + had minor effects on TCA removal. Overall, the results indicated that groundwater ionic composition may have low impact on the effectiveness of G-nZVI-catalyzed peroxide TCA treatment.

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Efficient transformation of trichloroethylene activated through sodium percarbonate using heterogeneous zeolite supported nano zero valent iron-copper bimetallic composite

Cited by 107 publications

References 45 publications

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

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

The impact of surface properties and dominant ions on the effectiveness of G-nZVI heterogeneous catalyst for environmental remediation

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