title: Synthesis, characterization, and debromination reactivity of cellulose-stabilized Pd/Fe nanoparticles for 2,2',4,4'-tretrabromodiphenyl ether.
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.
authors.affiliation: School of Environment and Energy, South China University of Technology, the Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, PR China.|State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, PR China.
authors.forename: Guofu
authors.initials: G
authors.lastname: Huang
authors.affiliation: School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, PR China.|Dongguan Cleaner Production Center, Dongguan, PR China.
authors.forename: Mianmian
authors.initials: M
authors.lastname: Wang
authors.affiliation: School of Environment and Energy, South China University of Technology, the Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, PR China.|State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, PR China.
authors.forename: Yongyou
authors.initials: Y
authors.lastname: Hu
authors.affiliation: School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, PR China.
authors.forename: Sihao
authors.initials: S
authors.lastname: Lv
authors.affiliation: School of Environment and Energy, South China University of Technology, the Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, PR China.|State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, PR China.
authors.forename: Changfang
authors.initials: C
authors.lastname: Li
mesh_terms: D001966:Bromine / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods; D055768:Halogenated Diphenyl Ethers / Q000737:chemistry*; D065347:Hypromellose Derivatives / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D008970:Molecular Weight; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D056951:Photoelectron Spectroscopy; D000071228:Polyelectrolytes; D011108:Polymers / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D001966:Bromine; D002482:Cellulose; D055768:Halogenated Diphenyl Ethers; D065347:Hypromellose Derivatives; D007501:Iron; D010165:Palladium; D000071228:Polyelectrolytes; D011108:Polymers; C511295:2,2',4,4'-tetrabromodiphenyl ether