Catalytic dechlorination of Aroclor 1242 by Ni/Fe bimetallic nanoparticles

Three novel kinds of support film, including PVDF-PAA film, PVDF·TiO2–PAA film and PVDF–g–AA film, were synthesized and used to immobilize the Pd/Fe bimetallic nanoparticles (NPs). The immobilized Pd/Fe bimetallic NPs systems were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, contact angle analysis, and X-ray photoelectron spectroscopy. The dechlorination efficiency of the immobilized bimetallic NPs systems were tested and discussed by dechlorinating monochloroacetic acid (MCAA). Comparing with free suspended Pd/Fe NPs, bimetallic NPs with support films appeared better catalytic dechlorination efficiency, and the dechlorination efficiencies of 10 mg/L MCAA in 120 min by Pd/Fe NPs immobilized in PVDF–PAA film, PVDF·TiO2–PAA film and PVDF–g–AA film were 56.33%, 71.01% and 75.51%, respectively.

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Enhanced Catalytic Dechlorination of 1,2-Dichlorobenzene Using Ni/Pd Bimetallic Nanoparticles Prepared by a Pulsed Laser Ablation in Liquid

Catalysts ◽

10.3390/catal8090390 ◽

2018 ◽

Vol 8 (9) ◽

pp. 390 ◽

Cited By ~ 5

Author(s):

Hyeon Jung ◽

Seung Lee ◽

Ravindranadh Koutavarapu ◽

Sung Kim ◽

Hyun Choi ◽

...

Keyword(s):

Laser Ablation ◽

Bimetallic Nanoparticles ◽

Catalytic Properties ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Synthesis Methods ◽

Laser Ablation In Liquid ◽

Ni Powder ◽

Catalytic Dechlorination ◽

Plausible Mechanism

Bimetallic nanoparticles (NPs) exhibit advantageous electrical, optical, and catalytic properties. Among the various NP synthesis methods, pulsed laser ablation in liquid (PLAL) is currently attracting much attention because of its simplicity and versatility. In this study, a pulsed laser was used to produce nickel/palladium (Ni/Pd) bimetallic NPs in methanol and deionized water. The morphological and optical properties of the resulting Ni/Pd bimetallic NPs were characterized. The synthesized Ni/Pd bimetallic NPs were used for the dechlorination of 1,2-dichlorobenzene (1,2-DCB) under various conditions. The dechlorination rates of 1,2-DCB while using single (Ni and Pd) and bimetallic (Ni powder/Pd and Ni/Pd) NPs were investigated. The results showed that the Ni/Pd bimetallic NPs with 19.16 wt.% Pd exhibited much enhanced degradation efficiency for 1,2-DCB (100% degradation after 30 min). Accordingly, the results of enhanced the degradation of 1,2-DCB provide plausible mechanism insights into the catalytic reaction.

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Catalytic Dechlorination of Para-Nitrochlorobenzne in Wastewater through a Nanoscale Nickel-Iron Bimetallic Catalyst

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.535-537.2257 ◽

2012 ◽

Vol 535-537 ◽

pp. 2257-2263 ◽

Cited By ~ 1

Author(s):

Shao Feng Niu ◽

Chun Hui Li ◽

Yan Peng Cai

Keyword(s):

Reaction Rate ◽

Bimetallic Nanoparticles ◽

Bimetallic Catalyst ◽

Hydrogen Gas ◽

Mass Ratio ◽

Nickel Iron ◽

Negative Linear Correlation ◽

Catalytic Dechlorination ◽

Loading Ratio ◽

Reaction Activation Energy

In this research, nickel/iron (Ni/Fe) bimetallic nanoparticles were used for the dechlorination of para-nitrochlorobenzene (p-NCB) which could be identified in contaminated soil and wastewater. In the reaction, Ni acted as a collector of hydrogen and the Fe was corroded for producing hydrogen gas. p-NCB was rapidly adsorbed onto the surface of the nanoparticles. Then, p-NCB was degraded to p-CAN and reduced to aniline, or dechlorinated directly to aniline. It was indicated that Ni loading ratio, Ni/Fe mass ratio, and reaction temperature could greatly affect the dechlorination process of p-NCB. Under similar conditions, when 6 g/L of nanoscale Ni/Fe was used, the dechlorination efficiencies reached 25.9 and 100% under 0.5 and 2.0% of Ni/Fe mass ratios, respectively. Thus, a negative linear correlation between the reaction rate and the initial concentration of p-NCB (within a range of 20 to 80 mg/l) could be observed. The reaction activation energy of 94.6 kJ/mol was obtained within the temperature range of 15 to 35 °C.

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Characterization and Evaluation of Catalytic Dechlorination Activity of Pd/Fe Bimetallic Nanoparticles

Industrial & Engineering Chemistry Research ◽

10.1021/ie701762d ◽

2008 ◽

Vol 47 (22) ◽

pp. 8645-8651 ◽

Cited By ~ 27

Author(s):

Xiangyu Wang ◽

Chao Chen ◽

Huiling Liu ◽

Jun Ma

Keyword(s):

Bimetallic Nanoparticles ◽

Catalytic Dechlorination

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Catalytic dechlorination of 2,4-dichlorophenol by Pd/Fe bimetallic nanoparticles in the presence of humic acid

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2010.06.022 ◽

2010 ◽

Vol 182 (1-3) ◽

pp. 252-258 ◽

Cited By ~ 51

Author(s):

Zhen Zhang ◽

Qiaohui Shen ◽

Naman Cissoko ◽

Jingjing Wo ◽

Xinhua Xu

Keyword(s):

Humic Acid ◽

Bimetallic Nanoparticles ◽

Catalytic Dechlorination

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Green synthesis of mixed metallic nanoparticles using room temperature self-assembly

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v13i2.5942 ◽

2017 ◽

Vol 13 (2) ◽

pp. 4671-4677 ◽

Cited By ~ 2

Author(s):

A. M. Abdelghany ◽

A.H. Oraby ◽

Awatif A Hindi ◽

Doaa M El-Nagar ◽

Fathia S Alhakami

Keyword(s):

Self Assembly ◽

Metallic Nanoparticles ◽

Room Temperature ◽

Bimetallic Nanoparticles ◽

Reduction Process ◽

Nano Particles ◽

Nano Structure ◽

Small Shift ◽

Molar Ratios ◽

Vis Spectroscopy

Bimetallic nanoparticles of silver (Ag) and gold (Au) were synthesized at room temperature using Curcumin. Reduction process of silver and gold ions with different molar ratios leads to production of different nanostructures including alloys and core-shells. Produced nanoparticles were characterized simultaneously with FTIR, UV/vis. spectroscopy, transmission electron microscopy (TEM), and Energy-dispersive X-ray (EDAX). UV/vis. optical absorption spectra of as synthesized nanoparticles reveals presence of surface palsmon resonance (SPR) of both silver at (425 nm) and gold at (540 nm) with small shift and broadness of gold band after mixing with resucing and capping agent in natural extract which suggest presence of bimetallic nano structure (Au/Ag). FTIR and EDAX data approve the presence of bimetallic nano structure combined with curcumin extract. TEM micrographs shows that silver and gold can be synthesized separately in the form of nano particles using curcumin extract. Synthesis of gold nano particles in presence of silver effectively enhance and control formation of bi-metallic structure.

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Phyto-Facilitated Bimetallic ZnFe2O4 Nanoparticles via Boswellia carteri: Synthesis, Characterization and Anti-Cancer Activity.

Anti-Cancer Agents in Medicinal Chemistry ◽

10.2174/1871520621666201218114040 ◽

2020 ◽

Vol 21 ◽

Author(s):

Amer Imraish ◽

Afnan Al-Hunaiti ◽

Tuqa Abu-Thiab ◽

Abed Al-Qader Ibrahim ◽

Eman Hwaitat ◽

...

Keyword(s):

Anticancer Activity ◽

Cell Lines ◽

Metallic Nanoparticles ◽

Bimetallic Nanoparticles ◽

Iron Chloride ◽

Nano Particles ◽

Adverse Side Effect ◽

Wide Range ◽

Anti Cancer ◽

Znfe2o4 Nanoparticles

Background: The growing unsatisfaction toward the available traditional chemotherapeutic agents enhanced the need to develop new methods for obtaining materials with more effective and safe anti-cancer properties. Over the past few years, usage of metallic nanoparticles has been a target for researchers of different scientific and commercial fields due to their tiny sizes, environment friendly properties and wide range applications. To overcome the obstacles of traditional physical and chemical methods for synthesis of such nanoparticles, a new less expensive and eco-friendly method has been adopted using natural existing organisms as a reducing agent to mediate synthesis of the desired metallic nanoparticles from their precursors, a process called green biosynthesis of nanoparticles. Objective: Here in the present study, zinc iron bimetallic nanoparticles (ZnFe2O4) were synthesized via an aqueous extract of Boswellia Carteri resin mixed with zinc acetate and iron chloride precursors, and they were tested for their anticancer activity. Methods: Various analytic methods were applied for the characterization of the Phyto synthesized ZnFe2O4 and they were tested for their anticancer activity against MDA-MB-231, K562, MCF-7 cancer cell lines and normal fibroblasts. Results: Our results demonstrate the synthesis of cubic structured bimetallic nanoparticles ZnFe2O4 with an average diameter 10.54 nm. MTT cytotoxicity assay demonstrate that our phyto-synthesized ZnFe2O4 nanoparticles exhibited a selective and potent anticancer activity against K562 and MDA-MB-231 cell lines with IC50 values 4.53 µM and 4.19 µM, respectively. Conclusion: In conclusion, our bio synthesized ZnFe2O4 nano particles show a promising environmentally friendly of low coast chemotherapeutic approach against selective cancers with a predicted low adverse side effect toward normal cells. Further in vivo advanced animal research should be done to execute their applicability in living organisms.

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Preparation and Photocatalytic Performance for Degradation of Rhodamine B of AgPt/Bi4Ti3O12 Composites

Nanomaterials ◽

10.3390/nano10112206 ◽

2020 ◽

Vol 10 (11) ◽

pp. 2206

Author(s):

Gaoqian Yuan ◽

Gen Zhang ◽

Kezhuo Li ◽

Faliang Li ◽

Yunbo Cao ◽

...

Keyword(s):

Visible Light ◽

Noble Metal ◽

Rhodamine B ◽

Photocatalytic Performance ◽

Bimetallic Nanoparticles ◽

Resonance Effect ◽

Visible Region ◽

Photogenerated Electron ◽

Pt Nanoparticles ◽

Electron Hole

Loading a noble metal on Bi4Ti3O12 could enable the formation of the Schottky barrier at the interface between the former and the latter, which causes electrons to be trapped and inhibits the recombination of photoelectrons and photoholes. In this paper, AgPt/Bi4Ti3O12 composite photocatalysts were prepared using the photoreduction method, and the effects of the type and content of noble metal on the photocatalytic performance of the catalysts were investigated. The photocatalytic degradation of rhodamine B (RhB) showed that the loading of AgPt bimetallic nanoparticles significantly improved the catalytic performance of Bi4Ti3O12. When 0.10 wt% noble metal was loaded, the degradation rate for RhB of Ag0.7Pt0.3/Bi4Ti3O12 was 0.027 min−1, which was respectively about 2, 1.7 and 3.7 times as that of Ag/Bi4Ti3O12, Pt/Bi3Ti4O12 and Bi4Ti3O12. The reasons may be attributed as follows: (i) the utilization of visible light was enhanced due to the surface plasmon resonance effect of Ag and Pt in the visible region; (ii) Ag nanoparticles mainly acted as electron acceptors to restrain the recombination of photogenerated electron-hole pairs under visible light irradiation; and (iii) Pt nanoparticles acted as electron cocatalysts to further suppress the recombination of photogenerated electron-hole pairs. The photocatalytic performance of Ag0.7Pt0.3/Bi4Ti3O12 was superior to that of Ag/Bi4Ti3O12 and Pt/Bi3Ti4O12 owing to the synergistic effect between Ag and Pt nanoparticles.

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