Synthesis, characterization, and reactivity of cellulose modified nano zero-valent iron for dye discoloration

Wang, Xiangyu; Wang, Pei; Ma, Jun; Liu, Huiling; Ning, Ping

doi:10.1016/j.apsusc.2015.03.131

Cited by 103 publications

(23 citation statements)

References 47 publications

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“…The adsorption capacity of NZVI for MB in terms of monolayer adsorption was 208.33 (mg⋅g −1 ) . More than 96% of Pb(II) was removed from 100 mL of solution containing 100 mg Pb(II)/L within 20 min of mixing with 0.7 g cellulose modified nZVI . The values for the adsorption capacity of MB in this work is acceptable as compared to some of the data reported in the literature (see Table ).…”

Section: Resultssupporting

confidence: 54%

Zero valent iron loaded on SiC nanoparticles as a new adsorbent for removing Pb (lead) and azo dyes from aqueous solution

Lemraski

Tahmasebi

2017

Env Prog and Sustain Energy

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A reusable silicon carbide nanoparticle supported by nano zero‐valent iron (nZVI) is prepared by a simple precipitation method. The results of thermal gravimetric analysis (TGA), dynamic light scattering (DLS), vibrating‐sample magnetometer (VSM), Fourier transform infrared spectroscopy (FT‐IR), transmission electron microscopy (TEM), scanning electron microscopy with X‐ray microanalysis (SEM‐EDS), X‐ray powder diffraction, and N2 adsorption isotherms indicated that the zero‐valent iron was successfully deposited onto the silicon carbide surface. An investigation into the adsorption ability of this material showed that the SiC nano particle coated with nZVI was expected to form a more active nano composite with higher efficiency for the removal of Pb2+ ions from an aqueous solution. Such findings suggest strong practical applications of modified silicon carbide nano particles with other nano particles as new adsorbents, sensors, as well as for drug delivery and catalysis due to their proper pore sizes, high‐specific areas, and high mechanical and chemical stabilities. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1657–1667, 2018

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Section: Resultssupporting

confidence: 54%

Zero valent iron loaded on SiC nanoparticles as a new adsorbent for removing Pb (lead) and azo dyes from aqueous solution

Lemraski

Tahmasebi

2017

Env Prog and Sustain Energy

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“…The C1s core-level spectrum of bare-Pd/Fe NPs (Fig 4(B)) is fitted to two peaks at 284.7 and 286.2 eV, corresponding to the C-C and C-O species [38], respectively. These carbon peaks may come from water, ethanol, or/and carbon dioxide contamination in the process of sample preparation [39]. After Pd/Fe NPs were stabilized with PAC, the noticeable variation appears in C1s core-level spectrum (Fig 4(C)).…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and debromination reactivity of cellulose-stabilized Pd/Fe nanoparticles for 2,2',4,4'-tretrabromodiphenyl ether

Huang

Wang

et al. 2017

PLoS ONE

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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.

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“…The attracting features of CMC also included to be binder in electrodes for sodium batteries [13], effective component of nanocatalysts [14] and dye solar cells [15]. Surface coating with polyelectrolytes improved nZVI stability via charge and steric stabilization [16]. Negative charge surfaces were preferred in the applications because aquifer soils generally had universal negative surface charges in the neutral pH ranges [5].…”

Section: Introductionmentioning

confidence: 99%

The influence of polyelectrolyte modification on nanoscale zero-valent iron (nZVI): Aggregation, sedimentation, and reactivity with Ni(II) in water

Liu

Zhang

2016

Chemical Engineering Journal

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h i g h l i g h t s SEM, XRD, FT-IR were used to characterize modified-nZVI. APAM modification made nZVI aggregate aggressively in water. CMC-modified nZVI had better colloidal stability. nZVI modified by APAM and CMC had the slow oxidation rate. The Ni 2+ removal efficiency with nZVI decreased after CMC modification. a b s t r a c tPolyelectrolyte modification on the surface of nanoscale zero-valent iron (nZVI) particles could affect colloidal stability, aggregation, mobility, oxidation as well as reactivity. In this article, two anionic polyelectrolytes with different molecular weight (MW), anionic polyacrylamide (APAM, MW = 3 million) and carboxymethylcellulose sodium (CMC, MW = 300-800) were modified on the surface of nZVI. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), and X-ray diffraction (XRD) were used to characterize the polyelectrolyte-modified nZVI. Results from UV-vis spectrophotometer (UV) and sedimentation tests showed that APAM modification led to the aggregation of nZVI in suspension, CMC modification made nZVI disperse well. XRD results indicated that polyelectrolyte modification made the slow oxidation of nZVI under ambient conditions. APAM-modified nZVI had much lower Ni 2+ removal efficiency than that of bare nZVI while CMC-modified nZVI had higher Ni 2+ removal efficiency after 1.5 hours (h). The study provided the information on the modification effect of nZVI on the colloidal stability and aggregation, sedimentation, reduction and sorption of heavy metal ions in the environment.

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Synthesis, characterization, and reactivity of cellulose modified nano zero-valent iron for dye discoloration

Cited by 103 publications

References 47 publications

Zero valent iron loaded on SiC nanoparticles as a new adsorbent for removing Pb (lead) and azo dyes from aqueous solution

Zero valent iron loaded on SiC nanoparticles as a new adsorbent for removing Pb (lead) and azo dyes from aqueous solution

Synthesis, characterization, and debromination reactivity of cellulose-stabilized Pd/Fe nanoparticles for 2,2',4,4'-tretrabromodiphenyl ether

The influence of polyelectrolyte modification on nanoscale zero-valent iron (nZVI): Aggregation, sedimentation, and reactivity with Ni(II) in water

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