- Title
- One-step green synthesis of bimetallic Fe/Pd nanoparticles used to degrade Orange II
- Creator
- Luo, Fang; Yang, Die; Chen, Zuliang; Megharaj, Mallavarapu; Naidu, Ravi
- Relation
- Journal of Hazardous Materials Vol. 303, p. 145-153
- Publisher Link
- http://dx.doi.org/10.1016/j.jhazmat.2015.10.034
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2016
- Description
- To reduce cost and enhance reactivity, bimetallic Fe/Pd nanoparticles (NPs) were firstly synthesized using grape leaf aqueous extract to remove Orange II. Green synthesized bimetallic Fe/Pd NPs (98.0%) demonstrated a far higher ability to remove Orange II in 12h compared to Fe NPs (16.0%). Meanwhile, all precursors, e.g., grape leaf extract, Fe2+ and Pd2+, had no obvious effect on removing Orange II since less than 2.0% was removed. Kinetics study revealed that the removal rate fitted well to the pseudo-first-order reduction and pseudo-second-order adsorption model, meaning that removing Orange II via Fe/Pd NPs involved both adsorption and catalytic reduction. The remarkable stability of Fe/Pd NPs showed the potential application for removing azo dyes. Furthermore, Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed the changes in Fe/Pd NPs before and after reaction with Orange II. High Performance Liquid Chromatography-Mass Spectrum (HPLC-MS) identified the degraded products in the removal of Orange II, and finally a removal mechanism was proposed. This one-step strategy using grape leaf aqueous extract to synthesize Fe/Pd NPs is simple, cost-effective and environmentally benign, making possible the large-scale production of Fe/Pd NPs for field remediation.
- Subject
- freen synthesized; Fe/Pd nanoparticles; grape leaf; orange II; HPLC–MS
- Identifier
- http://hdl.handle.net/1959.13/1344369
- Identifier
- uon:29407
- Identifier
- ISSN:0304-3894
- Language
- eng
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