Membrane‐based bimetallic nanoparticles for environmental remediation: Synthesis and reactive properties

Xu, Jian; Bhattacharyya, Dibakar

doi:10.1002/ep.10106

Cited by 110 publications

(78 citation statements)

References 26 publications

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“…Nanotechnology has been identified as a technology that could play an important role in resolving many of the problems involving water purification and quality (Bottero et al, 2006;Savage & Diallo, 2005;Theron et al, 2008;Weber et al, 2003). As such, the application of MNPs has been extensively studied for reductive dechlorination of halogenated organic compounds in ground water (Xu & Bhattacharyya, 2005). One of the most efficient elements is iron nanoparticles as pure monometallic entities or in combination with platinum (bimetallic particles).…”

Section: Complex Water Treatmentmentioning

confidence: 99%

“…For example, during a catalytic reaction, if the support has a dense structure, diffusion of reactants to the nanocatalysts may cause diffusion resistance. Therefore, it is necessary to tune the structural properties of nanocomposites to make such functional NPs maximally accessible by the substrates of interest (chemical reagents to be catalyzed or bacteria to be eliminated) and active (Xu & Bhattacharyya, 2005).…”

mentioning

confidence: 99%

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Environmentally-Safe Catalytically Active and Biocide Polymer-Metal Nanocomposites with Enhanced Structural Parameters

Alonso¹,

Macanás²,

Davies³

et al. 2011

Advances in Nanocomposite Technology

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Section: Complex Water Treatmentmentioning

confidence: 99%

mentioning

confidence: 99%

Environmentally-Safe Catalytically Active and Biocide Polymer-Metal Nanocomposites with Enhanced Structural Parameters

Alonso¹,

Macanás²,

Davies³

et al. 2011

Advances in Nanocomposite Technology

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“…However, there are only a few reports concerning the interaction modes between CMC and nZVI nanoparticles and the consequent change in surface potential due to the adsorption of CMC Phenrat et al 2008;Kim et al 2009). Less studies investigated consecutive degradative capability in a long time scale (Xu and Bhattacharyya 2005;Parshetti and Doong 2009). As for the degradation of γ-HCH by iron-based bimetallic nanoparticles, modification by Pd has been well documented (Nagpal et al 2010;Singh et al 2012Singh et al , 2013.…”

Section: Introductionmentioning

confidence: 98%

Degradation of γ-Hexachlorocyclohexane Using Carboxymethylcellulose-Stabilized Fe/Ni Nanoparticles

Yang

Sun

2015

Water Air Soil Pollut

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Carboxymethylcellulose (CMC)-stabilized and Ni-doped nanoscale zero valent iron (nZVI) particles (CMC-Fe/Ni) were synthesized to remove γ-hexachlorocyclohexane (γ-HCH) in aqueous solution. Fourier transform infrared spectroscopy results suggested that the CMC molecules were adsorbed onto iron primarily through carboxylate groups by monodentate complexation, and hydroxyl groups were also involved in the interactions between CMC and iron. The adsorbed CMC made the zeta potential of Fe/Ni nanoparticles more negative. At reaction pH of 8.3, the absolute value of zeta potential of the CMC-Fe/Ni was almost twice that of the bare one. The stability of colloidal nanoparticles was greatly enhanced as initial CMC concentration increased from 0 to 0.1 % (w/w) and did not increase further with higher CMC doses. Batch studies showed that 99.9 % of 10 mg/L γ-HCH was removed after 4 h at a mono nZVI loading level of 0.1 g/L, while the γ-HCH could be completely removed in 5 min using CMC-Fe/Ni, which exhibited a 13 times greater k obs as compared to that using bare Fe/Ni. Within 20 h, 60 mg/L γ-HCH was totally removed through 6 cycles of consecutive treatment using CMC-Fe/Ni. GC-MS analysis showed that 3,4,5,6-tetrachlorocyclohexene was the main intermediate and chlorobenzene was the final product when using mono nZVI. When treating by Fe/Ni nanoparticles, 1,2,3,4,5-pentachlorocyclohexene, 3,4,5,6-tetrachlorocyclohexene, and 1,4-dichlorobenzene were formed as intermediates and benzene and chlorobenzene as the final products. Possible degradation pathways were proposed based on the identified intermediates, and dehydrochlorination, dichloroelimination, and hydrogenolysis were involved in dechlorination.

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“…The results showed that supported Ni/Fe BNPs has significantly higher reactivity than unsupported BNPs. Xu and Bhattacharyya [27] [31,32], PAA/PVDF [33], polysulphone [34], polymeric anion exchanger [35], and PEG/PVDF and PEG/nylon 66 membranes [ 36] to form Ni/Fe bimetallic nanoparticles within D072 (denoted Fe/Ni-D072). The collected black particles were washed with ethanol at least three times.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of Fe/Ni nanoparticles supported by polystyrene resin for trichloroethylene degradation

Zhou

Ruan

Huang

et al. 2016

Chemical Engineering Journal

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Membrane‐based bimetallic nanoparticles for environmental remediation: Synthesis and reactive properties

Cited by 110 publications

References 26 publications

Environmentally-Safe Catalytically Active and Biocide Polymer-Metal Nanocomposites with Enhanced Structural Parameters

Environmentally-Safe Catalytically Active and Biocide Polymer-Metal Nanocomposites with Enhanced Structural Parameters

Degradation of γ-Hexachlorocyclohexane Using Carboxymethylcellulose-Stabilized Fe/Ni Nanoparticles

Fabrication and characterization of Fe/Ni nanoparticles supported by polystyrene resin for trichloroethylene degradation

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