Ferrofluid Synthesis Using Nitrosated Lignosulfonates

Babkin, I. M.; Бровко, О. С.; Iakovlev, Mikhail; Khabarov, Yu. G.

doi:10.1021/ie400531f

Cited by 6 publications

(4 citation statements)

References 21 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The magnetic activity (MA, g) [19] of the formed precipitate was measured after the given time intervals. The magnetic characteristics of precipitates were measured by the magnetic granulometry method [20].…”

Section: Methodsmentioning

confidence: 99%

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

Kuzyakov¹,

Veshnyakov²,

Khabarov³

et al. 2018

IJET

View full text Add to dashboard Cite

Chromium and its compounds are widely used in various industries. Wastewater from industrial enterprises using chromium compounds are subject to complete disposal at treatment facilities. The possibility of synthesizing a magnetoactive compound by oxidizing part of Fe(II) cations with chromate-anions in the presence of lignosulfonates was investigated. The magnetic activity was measured on Gouy balance, magnetic characteristics were determined by the magnetic granulometry method. It has been shown that the interaction of Fe(II) cations with chromate-anions passes with the formation of an water soluble intermediate without redox transformations at pH 3.4. Using method of the isomolar series, it was determined that the ratio of chromate-ions and Fe(II) cations in the intermediate is 1:2.33. The intermediate solution is stable for a long time. Synthesized magnetoactive compound samples are ferrimagnets. The use of lignosulfonate and the synthesis with heating can achieve a higher magnetic activity of magnetoactive compound. The optimal lignosulfonate consumption is 0.7 g/g Fe.

show abstract

Section: Methodsmentioning

confidence: 99%

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

Kuzyakov¹,

Veshnyakov²,

Khabarov³

et al. 2018

IJET

View full text Add to dashboard Cite

show abstract

“…Babkin et al synthesized FFs based on iron(II) sulfate and lignosulfonates. [155] They reported that a relative magnetic permeability as high as 35 g g À1 Fe could be achieved by using high-molecular-weight nitrosated lignosulfonates from the acid sulfite pulping process. Estephan et al synthesized stable aqueous dispersions of superparamagnetic iron oxide by using a zwitterionic siloxane, namely sulfobetaine siloxane, without peptization or any ligand exchange.…”

Section: Electrostatic Stabilization In Aqueous Mediummentioning

confidence: 99%

Ferrofluids: Synthetic Strategies, Stabilization, Physicochemical Features, Characterization, and Applications

Joseph

Mathew

2014

ChemPlusChem

View full text Add to dashboard Cite

Ferrofluids (FFs) or magnetic nanofluids are incredible smart materials consisting of ultrafine magnetic nanoparticles suspended in a liquid carrier medium, which exhibit both fluidity and magnetic controllability. Studies involving the dynamics and physicochemical properties of these magnetic nanofluids are an interdisciplinary area of research attracting researchers from different fields of science and technology. Herein, a comprehensive Review on the different aspects of FF research is presented. First, the synthesis and stabilization of various types of FFs are discussed followed by their physicochemical features such as polydispersity, magnetic behavior, dipolar interactions, formation of chainlike aggregates, and long‐range ordering. The Review also details the rheological and thermal properties, dynamic instabilities, phase behavior, and particle assemblies in FFs to form complex multipolar geometries, photonic nanostructures, labyrinth structures, thin films, and droplets. Many important characterization techniques for probing FF properties are also briefly discussed, and the numerous innovative applications and future prospects of FFs are outlined.

show abstract

“…33 High molecular weight stabilizers, such as synthetic polymers, [34][35][36] including polyvinyl alcohol, 37 polyacrylic acid, 38 polymethacrylic acid, 39 the three-block copolymer PEO-COOH-PEO, 40 the copolymer of acrylic, and p-vinylbenzenesulfonic and vinylsulfonic acids, 41 can be used to stabilize the colloidal particles of MFs. In addition, natural or modi¯ed biopolymers, such as dextran, 42,43 alginic acid, 44 humic acids 45 and lignosulfonates (LS), [46][47][48] including nitrosated LS, 49,50 are used as stabilizers.…”

Section: Introductionmentioning

confidence: 99%

Using Nitrated Lignosulfonates for the Synthesis of a Water-Based Magnetic Fluid

et al. 2019

View full text Add to dashboard Cite

Nitrated lignosulfonates were used to synthesize a water-based magnetic fluid. Lignosulfonates were nitrated by nitric acid under mild conditions and without further purification were used to synthesize a magnetic fluid. Part of the iron(II) were oxidized with an excess of nitric acid, so that the magnetoactive phase under the condensation by action of sodium hydroxide was formed. Optimum conditions for nitration of lignosulfonates and synthesis of a magnetic fluid were experimentally established. The optimum consumption of iron(II) was 1.3–1.5[Formula: see text]g per 1[Formula: see text]g of sodium lignosulfonate. Unlike the initial lignosulfonates, nitrated lignosulfonates have peptizing properties, due to which the precipitate formed during condensation was dispersed to nanoparticles (15–30[Formula: see text]nm). The resulting magnetic fluid had a high magnetic activity and was stable for a long time.

show abstract

Ferrofluid Synthesis Using Nitrosated Lignosulfonates

Cited by 6 publications

References 21 publications

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

Influence of lignosulfonic acids on the formation of magnetoactive compound in the redox reaction of iron(II) with chromate-anion

Ferrofluids: Synthetic Strategies, Stabilization, Physicochemical Features, Characterization, and Applications

Using Nitrated Lignosulfonates for the Synthesis of a Water-Based Magnetic Fluid

Contact Info

Product

Resources

About