Catalytic degradation of Orange II in aqueous solution using diatomite-supported bimetallic Fe/Ni nanoparticles

Ezzatahmadi, Naeim; Bao, Teng; Liu, Hongmei; Millar, Graeme J.; Ayoko, Godwin A.; Zhu, Jianxi; Liang, Xiaoliang; He, Hongping; Xi, Yunfei

doi:10.1039/c7ra13348k

Cited by 33 publications

(11 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Fe2p 1/2 peak at 724 eV is present for Ni4Fe10 and Ni5Fe10 as-synthesized samples, indicating the presence of iron oxide and iron hydroxide species [44], [48]. The Fe2p 3/2 and Fe2p 1/2 peaks are similar for NiFe alloy nanoparticles found in literature for the treatment of azo dyes [8], [41]. The Fe2p 1/2 peaks are harder to identify from the background noise for the Ni1Fe10-Ni3.5Fe10 molar ratios for the as-synthesized samples which indicates that the samples had less Fe at the surface of the particles.…”

Section: B Characterization Of Nanoparticles Pre-and Post-aqueous Orsupporting

confidence: 70%

“…% ≥ 67%) [37]- [39]. NiFe alloy nanoparticles for treating azo dye literature indicate that NiFe alloy nanoparticle structure varies for studies due to differing synthesis procedures [7], [27], [41]. There is a lack of post experimental XRD analysis to determine phase shifts in the literature.…”

Section: B Characterization Of Nanoparticles Pre-and Post-aqueous Ormentioning

confidence: 99%

“…The larger concentrations of Ni starting at Ni2.5Fe10 ratio show an additional peak at 852.2 eV, which indicates the presence of Ni metal in the nanoparticles [53]. Ni metal was present for NiFe alloy nanoparticles in the literature for the treatment of azo dyes [8], [41]. Similar to the Fe metal peaks, the Ni metal peak disappears in the post-reaction spectra, indicating that the Ni metal oxidizes during the reaction.…”

Section: B Characterization Of Nanoparticles Pre-and Post-aqueous Ormentioning

confidence: 99%

See 2 more Smart Citations

Nickel-Iron Alloy Nanoparticle Characteristics Pre- and Post-Reaction With Orange G

Foster

Acharya

Abolhassani

et al. 2021

IEEE Open J. Nanotechnol.

View full text Add to dashboard Cite

Bimetallic nanoparticles comprised of iron and nickel were synthesized, characterized, and evaluated to optimize the ideal metal ratio for azo dye removal from water systems. Results show that changing the molar ratio of nickel to iron caused different removal rates, as well as the extent of overall elimination of azo dye from water. Lower molar ratios, from Ni1Fe10 to Ni2.5Fe10, exhibited a higher removal efficiency of 80-99%. Higher concentrations of Ni in the catalyst, from Ni3Fe10 to Ni5Fe10, resulted in 70-90% removal. The lower molar ratios of Ni exhibited a consistent removal rate of 0.11 g/L/min, while the higher molar ratios of Ni displayed varying removal rates of 0.1-0.05 g/L/min. A second order kinetic model was fit to the first twenty minutes of the reaction for all nickel to iron compositions, where there is a decrease in rate constant with an increase in molar ratio. During the last forty minutes of reaction, azo dye removal fit a zero order kinetic model. All as-synthesized nanoparticle samples were found to be structurally disordered based on the lack of distinct peaks in XRD spectra. Post-reaction samples were found to have Fe2O3 and FeOOH cubic peaks.

show abstract

Section: B Characterization Of Nanoparticles Pre-and Post-aqueous Orsupporting

confidence: 70%

Section: B Characterization Of Nanoparticles Pre-and Post-aqueous Ormentioning

confidence: 99%

Section: B Characterization Of Nanoparticles Pre-and Post-aqueous Ormentioning

confidence: 99%

See 1 more Smart Citation

Nickel-Iron Alloy Nanoparticle Characteristics Pre- and Post-Reaction With Orange G

Foster

Acharya

Abolhassani

et al. 2021

IEEE Open J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…Supporting materials are another factor since they can deeply influence the NP size, loading, and dispersion and the activity and stability of the catalysts. − Among various supporting materials, diatomite has been applied as an efficient support to disperse metal NPs and it exhibited excellent performance in some reactions. − For instance, Ezzatahmadi et al applied diatomite supported bimetallic Fe/Ni NPs in oxidation of orange II in the aqueous phase and found that diatomite not only served as catalyst carrier for stabilizing and dispersing bimetallic Fe/Ni NPs but also had a synergistic effect with it, thereby resulting in increased degradation ability. Besides, Zhang et al found that Pd NPs can be anchored well on natural diatomite and presented excellent activity for the Heck and Suzuki reaction.…”

Section: Introductionmentioning

confidence: 99%

Diatomite Supported Pt Nanoparticles as Efficient Catalyst for Benzene Removal

Zhai

et al. 2019

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Directly using natural materials as supporting material and reducing agent to obtain supported catalysts is significance along with the research of green and sustainable technologies. Herein, diatomite supported Pt (Pt/diatomite) catalysts were synthesized by the bioreduction method, through using Cinnamomum camphora (CC) leaf extract as reducing agent. As a result, the as-prepared 0.3% Pt/diatomite not only presented good benzene catalytic oxidation performance but also was catalytically stable and durable through long time on-stream, water vapor and carbon dioxide effect experiments. Through XPS, H2-TPR, H2-TPD, TEM, and in situ DRIFTS of CO adsorption analysis, it can be noticed that the high catalytic oxidation activity of 0.3% Pt/diatomite is attributed with more surface absorbed oxygen, good Pt dispersion and strong interactions between Pt and diatomite. Moreover, in situ DRIFTS of benzene oxidation experiments revealed that the hydrocarbon fragments were the intermediates during the process.

show abstract

“…Specifically for azo dye removal and degradation, the addition of Ni has been shown to result in an increase in catalytic lifetime of up to 10 days [8] and utilization of the corrosion of Fe to enhance reduction with the formation of nickel hydride [26]. Through investigations, it has been shown that as the initial concentration of azo dye is increased, degradation becomes slower, and as the initial concentration of nanoparticles increases, azo dye degradation increases [8,[26][27][28][29][30]. Azo dye degradation with bimetallic NiFe nanoparticles has been shown to work more effectively at lower pH values [8,[26][27][28] and has shown quicker initial degradation at increased temperatures as high as 40°C [26,27].…”

Section: Introductionmentioning

confidence: 99%

Removal of Synthetic Azo Dye Using Bimetallic Nickel-Iron Nanoparticles

Foster

Estoque

Voecks

et al. 2019

Journal of Nanomaterials

View full text Add to dashboard Cite

Bimetallic nanoparticles comprised of iron (Fe) and nickel (Ni) were investigated for the removal of an azo dye contaminant in water. Morphology (core shell and alloy) and metal molar ratio (Ni2Fe10, Ni5Fe10, and Ni10Fe10) were tested as key nanoparticle properties. The shelf life of the nanoparticles was tested over a 3-week period, and the effect of initial nanoparticle concentration on dye removal was evaluated. The highest initial nanoparticle concentration (1000 mg/L) showed consistent Orange G removal and the greatest extent of dye removal, as compared to the other tested concentrations (i.e., 750 mg/L, 500 mg/L, and 250 mg/L) for the same nanoparticle morphology and metal molar ratio. The metal molar ratio significantly affected the performance of the core shell morphology, where overall dye removal was found to be 66%, 89%, and 98% with an increasing molar ratio (Ni2Fe10 → Ni5Fe10 → Ni10Fe10). In contrast, the overall removal of the dye for all molar ratios of the alloy nanoparticles only resulted in a variability of ±0.005%. When stored in water for 3 weeks, core shell nanoparticles lost reactivity with an average>17% loss in removal with each passing week. However, the alloy nanoparticles were able to continually remove Orange G from solution after 3 weeks of storage to ~97% when used at a starting nanoparticle concentration of 1000 mg/L. Overall, the Ni2Fe10, Ni5Fe10, and Ni10Fe10 alloy nanoparticles with a starting nanoparticle concentration of 1000 mg/L resulted in the greatest dye removal of 97%, 99%, and 98%, respectively. Kinetic rate models were used to analyze dye removal rate constants as a function of nanoparticle properties. Kinetic rate models were seen to differ from core shell (first-order kinetics) to alloy morphology (second-order kinetics). Alloy nanoparticles resulted in as high as X kinetic rate constant, and core shell nanoparticles resulted in as high as XX kinetic rate constant. Metal leaching from the nanoparticles was investigated; alloy nanoparticles resulted in leaching of 3% Fe and 5% Ni which is similar to core shell leaching of 3.2% Fe and 4.3% Ni from the Fe10Ni10 nanoparticles.

show abstract

Catalytic degradation of Orange II in aqueous solution using diatomite-supported bimetallic Fe/Ni nanoparticles

Abstract: A functional diatomite-supported Fe/Ni nanocomposite successfully remediated Orange II contaminant in aqueous solution.

Cited by 33 publications

References 33 publications

Nickel-Iron Alloy Nanoparticle Characteristics Pre- and Post-Reaction With Orange G

Nickel-Iron Alloy Nanoparticle Characteristics Pre- and Post-Reaction With Orange G

Diatomite Supported Pt Nanoparticles as Efficient Catalyst for Benzene Removal

Removal of Synthetic Azo Dye Using Bimetallic Nickel-Iron Nanoparticles

Contact Info

Product

Resources

About