Greener and size-specific synthesis of stable Fe-Cu oxides as earth-abundant adsorbents for malachite green

Journal of Materials Chemistry. A, Materials for Energy and Sustainability
Ping ZhangXun Wang

Abstract

A greener and sustainable pathway to the assembly of Fe, Cu -based adsorbent is described using Virginia creeper (Parthenocissus quinquefolia) leaf extracts in presence of oxalic acid which avoids the use of toxic chemicals. Characterization of the synthesized mixed Fe, Cu oxides are carried out by SEM, TEM, XRD, FT-IR, XPS, and BET techniques; SEM and TEM results disclosed particle size ranging from 160 nm to 1 μm in presence of varying oxalic acid amounts of 0 and 0.1 mol/L. The X-ray photoelectron spectroscopy studies revealed that the sample comprised of Fe, Cu-based hybrid oxides and oxalates. The ensuing results from altered operational parameters namely initial pH, initial malachite green (MG) concentration, the sample dosage and the reaction temperature suggest that the MG adsorption capacity of synthesized materials could be well structured by simply varying the amount of oxalic acid. The optimal sample (S3 sample) has a remarkably high maximum adsorptive capacity (~1399 mg/g) for aqueous MG removal at 303 K and natural pH (~ 6.58), which is superior to recently documented sorbents. The results demonstrate that the adsorption is spontaneous (i.e., ∆G < 0) via an endothermic process wherein the synthesized adsorbent dis...Continue Reading

References

Jul 31, 2013·The Science of the Total Environment·Ting WangRavendra Naidu
Sep 17, 2013·Journal of Colloid and Interface Science·Ye KuangRavendra Naidu
Feb 5, 2014·Journal of Hazardous Materials·A AluigiL Jannoke
May 3, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Valentin V MakarovNatalia O Kalinina
Aug 15, 2014·Environmental Science & Technology·Jian ZhaoBaoshan Xing
May 8, 2016·Advances in Colloid and Interface Science·María Pérez-PagePieter Stroeve
Apr 22, 2017·Journal of Colloid and Interface Science·Kanika Gupta, Om P Khatri
Aug 19, 2017·Journal of Colloid and Interface Science·Ping ZhangDeyi Hou

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Citations

Oct 11, 2019·Environmental Science and Pollution Research International·Pamela Y QuintasLeticia B Escudero
Sep 12, 2018·International Journal of Environmental Research and Public Health·Jian XuYan Zhou
May 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Qiujie LiuWeihua Zou
Aug 9, 2020·Journal of Hazardous Materials·Mahmoud NasrollahzadehRajender S Varma
Jan 25, 2022·Langmuir : the ACS Journal of Surfaces and Colloids·Dhirendra SahooBhaskar Kaviraj

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