Highly enhanced selectivity for the separation of rhenium and molybdenum using amino-functionalized magnetic Cu-ferrites

Li, Yanhui; Yang, Lijun; Liu, Xueyan; Li, Na; Zhang, Lei; Li, Qi; Yang, Yang; Duan, Yu; Zhang, Fuquan

doi:10.1007/s10853-015-9140-8

Cited by 22 publications

(3 citation statements)

References 37 publications

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“…Raman spectroscopy and electron loss spectroscopy (EELS) analyses confirmed the formation of CuFe 2 O 4 in the Fedoped of CuO NPs (Naatz et al, 2017). The isoelectric point of CuFe 2 O 4 was reported as pH 4.1 in a previous study (Li et al, 2015).…”

Section: Nanoparticles Synthesis and Characterizationsupporting

confidence: 55%

Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters

et al. 2018

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Engineered nanoparticles (NPs) are often doped with other elements to improve their functionality and, at times, physical and/or chemical stability. However, the effect of doping on the environmental implications of NPs is not well-understood. We investigated the colloidal stability and effects of CuO NPs doped with Fe (0-10%). Colloidal stability of the Fe-doped CuO NPs in aqueous media, as determined by critical coagulation concentrations of NaCl, decreased with increased Fe-doping. However, decrease in the overall particle density led to slower sedimentation of Fe-doped CuO NPs than would have been predicted from their aggregation behavior. Fe-doping significantly affected CuO dissolution (p < .001), promoting Cu leaching out from the doped NPs due to increased reactivity at neutral pH and increased surface area with Fe-doping. Fe-doping did not increase the toxicity of CuO to a marine phytoplankton, Isochrysis galbana, despite promoting ionic Cu release. Total suspended Cu was dominated by dissolved Cu complexes in seawater and particulate Cu in freshwater. Based on the abundance of different size fractions analyzed in freshwater, the particles detected in water suspension were mostly (≥50%) larger than 200 nm in diameter. However, these large-sized particles are mainly composed of aggregated nanosized particles held together by van der Waals attraction.

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Section: Nanoparticles Synthesis and Characterizationsupporting

confidence: 55%

Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters

et al. 2018

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“…The Q and R values for ReO 4 – -IIP were higher than our previous work. Although some adsorbents brought the maximum adsorption capacity greater than ReO 4 – -IIP, , however, they had various limitations such as complex or expensive synthetic processes. Besides, most of these studies did not specify the detail with the separation degree.…”

Section: Resultsmentioning

confidence: 99%

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Liu

Jia

et al. 2020

ACS Omega

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In this work, an ion imprinted polymer (ReO 4 – -IIP) of the perrhenate ion based on acrylamide (AM) and acrylic acid (AA) was prepared by solution polymerization using ReO 4 – as a template ion, N , N -methylenebisacrylamide (NMBA) as cross-linkers, hydrogen peroxide-vitamin C (H 2 O 2 -Vc) as an initiator, and a mixed solution of water (H 2 O) and methanol (CH 3 OH) with volume ratio v(H 2 O)/v(CH 3 OH) = 3:7 as a solvent. During the process of synthesis condition investigation and optimization, the adsorption capacity ( Q ) and the separation degree ( R ) in the equimolar concentration mixture solutions of NH 4 ReO 4 and KMnO 4 were adopted as indexes, and the obtained optimal conditions were as follows: the molar ratios of NMBA, NH 4 ReO 4 , AA, H 2 O 2 , and Vc to AM were 5.73, 0.052, 1.29, 0.02, and 0.003, and the temperature and time of polymerization were 40 °C and 28 h, respectively. Under optimal conditions, the sample with indexes, Q and R of 0.064 mmol/g and 3.20, were harvested. What is more, a further reusability study found that good adsorption selectivity was maintained after repeating the experiment 9 times. Taking the non-IP prepared under the same conditions as a control, Fourier transform infrared spectroscopy, transmission electron microscopy, and Brunauer Emmett Teller were used to characterize the structure of the ReO 4 – -IIP prepared under the optimal conditions. Finally, the kinetic study results showed that the zero-order kinetic model could better describe the adsorption process. The thermodynamic study results showed that the Langmuir model was more suitable for describing the isotherm adsorption process of the IIP.

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“…After amine functionalization of CuFe 2 O 4 @SiO 2 , the surface charge became positive due to the presence of NH 2 groups on the material's surface. 50 Subsequently, CuFe 2 O 4 @SiO 2 -NH 2 nanoparticles immobilized on GO showed a zeta potential value of −40.8 mV, indicating that the surface of CuFe 2 O 4 @SiO 2 -GO COOH was negatively charged due to the formation of covalent bonding between the carboxylic groups of GO and amine groups. These results suggest that the CuFe 2 O 4 @SiO 2 -GO COOH material could be used as a potential adsorbent for the removal of negatively charged pollutants.…”

Section: Resultsmentioning

confidence: 99%

Ultrasound-assisted degradation of organophosphorus pesticide methidathion using CuFe₂O₄@SiO₂-GO_COOH as a magnetic separable sonocatalyst

et al. 2023

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Highly enhanced selectivity for the separation of rhenium and molybdenum using amino-functionalized magnetic Cu-ferrites

Cited by 22 publications

References 37 publications

Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters

Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Ultrasound-assisted degradation of organophosphorus pesticide methidathion using CuFe₂O₄@SiO₂-GO_COOH as a magnetic separable sonocatalyst

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Highly enhanced selectivity for the separation of rhenium and molybdenum using amino-functionalized magnetic Cu-ferrites

Cited by 22 publications

References 37 publications

Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters

Influence of nanoparticle doping on the colloidal stability and toxicity of copper oxide nanoparticles in synthetic and natural waters

Study on Synthesis and Adsorption Properties of ReO4– Ion-Imprinted Polymer

Ultrasound-assisted degradation of organophosphorus pesticide methidathion using CuFe2O4@SiO2-GOCOOH as a magnetic separable sonocatalyst

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Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Ultrasound-assisted degradation of organophosphorus pesticide methidathion using CuFe₂O₄@SiO₂-GO_COOH as a magnetic separable sonocatalyst