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Synthesis, characterization, and debromination reactivity of cellulose-stabilized Pd/Fe nanoparticles for 2,2',4,4'-tretrabromodiphenyl ether.
- Source :
-
PloS one [PLoS One] 2017 Mar 29; Vol. 12 (3), pp. e0174589. Date of Electronic Publication: 2017 Mar 29 (Print Publication: 2017). - Publication Year :
- 2017
-
Abstract
- In this study, two kinds of cellulose derivatives (polyanionic cellulose (PAC) and hydroxypropylmethyl cellulose (HPMC)) were selected as stabilizers of Pd/Fe nanoparticles (NPs) to investigate their influences on the debromination performances of 2,2',4,4'-tretrabromodiphenyl ether (BDE47). Field emission scanning electron microscope (FE-SEM) images revealed that the cellulose-stabilized Pd/Fe NPs were smaller and more uniform than the bare-Pd/Fe NPs. X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) results suggested that cellulose coatings found on Pd/Fe NPs surfaces featured some antioxidation abilities, which followed the order of HPMC < PAC. Sedimentation tests demonstrated that the stabilizing power of PAC for Pd/Fe NPs was higher than that of HPMC. Fourier transfer infrared spectrometer (FTIR) results indicated that PAC molecules were bound to the Pd/Fe NPs surfaces by polar covalent bonds and hydrogen bonds, while HPMC molecules interacted with the nanoparticles by hydrogen bonds. Batch debromination test for BDE47 demonstrated that the catalytic debromination rate with cellulose-stabilized Pd/Fe NPs was higher than that with bare-Pd/Fe NPs during reaction period of 15 min. Overall, this study indicated that both celluloses are beneficial to forming smaller, more regular, stable and antioxidative Pd/Fe NPs, leading to higher debromination reactivity for BDE47 compared with the bare-Pd/Fe NPs. Therefore Pd/Fe NPs can be utilized as a promising remediation technology for the contaminated groundwater and soils.
- Subjects :
- Environmental Restoration and Remediation methods
Hypromellose Derivatives chemistry
Metal Nanoparticles ultrastructure
Microscopy, Electron, Scanning
Molecular Structure
Molecular Weight
Particle Size
Photoelectron Spectroscopy
Polyelectrolytes
Polymers chemistry
Spectroscopy, Fourier Transform Infrared
X-Ray Diffraction
Bromine chemistry
Cellulose chemistry
Halogenated Diphenyl Ethers chemistry
Iron chemistry
Metal Nanoparticles chemistry
Palladium chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1932-6203
- Volume :
- 12
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- PloS one
- Publication Type :
- Academic Journal
- Accession number :
- 28355273
- Full Text :
- https://doi.org/10.1371/journal.pone.0174589