Nature-inspired soluble iron-rich humic compounds: new look at the structure and properties

Sorkina, T.A.; Polyakov, Alexander Yu.; Куликова, Н. А.; Goldt, Anastasia E.; Philippova, O. I.; Aseeva, Alina A.; Велигжанин, А. А.; Zubavichus, Yan V.; Pankratov, D. А.; Goodilin, Eugene A.; Perminova, Irina V.

doi:10.1007/s11368-013-0688-0

Cited by 27 publications

(18 citation statements)

References 28 publications

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“…Similar reports about humic substances have been published elsewhere (Blinova et al, 2007;Perminova et al, 2007;Zhilin et al, 2004). The presence of amine groups in organic matter play significant role due to their protonation at definite pH values (Saada et al, 2003;Sorkina et al, 2014). As(V) sorption onto different forms of kaolinite and two kaolinites coated with humic acids was carried out by Saada et al (2003).…”

Section: Adsorption (Ad)supporting

confidence: 65%

Arsenic and fluoride contaminated groundwaters: A review of current technologies for contaminants removal

Jadhav

Bringas

Yadav

et al. 2015

Journal of Environmental Management

428

146

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Section: Adsorption (Ad)supporting

confidence: 65%

Arsenic and fluoride contaminated groundwaters: A review of current technologies for contaminants removal

Jadhav

Bringas

Yadav

et al. 2015

Journal of Environmental Management

428

146

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“…After that, two products (S and M) were obtained by interaction of potassium humate with 57 Fe 2 (SO 4 ) 3 solution. In brief, the product S was synthesized as in Sorkina et al (2014), 17 mL of 0.2M 57 Fe 2 (SO 4 ) 3 solution was added dropwise to 14.3 mL of the L solution and pH was maintained at a value of 10 by adding slowly 1M KOH when needed. For the synthesis of the product M, 17 mL of 57 Fe 2 (SO 4 ) 3 solution was slowly added to 40 mL of L solution, maintaining the pH at 9 with 1M KOH.…”

Section: Methodsmentioning

confidence: 99%

Eco-Friendly Iron-Humic Nanofertilizers Synthesis for the Prevention of Iron Chlorosis in Soybean (Glycine max) Grown in Calcareous Soil

et al. 2019

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Iron deficiency is a frequent problem for many crops, particularly in calcareous soils and iron humates are commonly applied in the Mediterranean basin in spite of their lesser efficiency than iron synthetic chelates. Development and application of new fertilizers using nanotechnology are one of the potentially effective options of enhancing the iron humates, according to the sustainable agriculture. Particle size, pH, and kinetics constrain the iron humate efficiency. Thus, it is relevant to understand the iron humate mechanism in the plant–soil system linking their particle size, characterization and iron distribution in plant and soil using 57 Fe as a tracer tool. Three hybrid nanomaterials (F, S, and M) were synthesized as iron-humic nanofertilizers ( 57 Fe-NFs) from leonardite potassium humate and 57 Fe used in the form of 57 Fe(NO 3 ) 3 or 57 Fe 2 (SO 4 ) 3 . They were characterized using Mössbauer spectroscopy, X-ray diffraction (XRD), extended X-ray absorption fine structure spectroscopy (EXAFS), transmission electron microscopy (TEM) and tested for iron availability in a calcareous soil pot experiment carried out under growth chamber conditions. Three doses (35, 75, and 150 μmol pot -1 ) of each iron-humic material were applied to soybean iron deficient plants and their iron nutrition contributions were compared to 57 FeEDDHA and leonardite potassium humate as control treatments. Ferrihydrite was detected as the main structure of all three 57 Fe-NFs and the plants tested with iron-humic compounds exhibited continuous long-term statistically reproducible iron uptake and showed high shoot fresh weight. Moreover, the 57 Fe from the humic nanofertilizers remained available in soil and was detected in soybean pods. The Fe-NFs offers a natural, low cost and environmental option to the traditional iron fertilization in calcareous soils.

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“…32,33 We have also shown the excellent colloidal stability and biocompatibility of humate-capped NPs. 34,35 In this work, we used leonardite-derived humate as a capping agent to achieve control over the morphology, size distribution, plasmonic properties, and water redispersibility of AuNPs. Firstly, we defined the conditions for humatemediated synthesis of spheroidal AuNPs with a narrow size distribution and enhanced optical properties; secondly, we studied the growth of spheroidal humate AuNPs as compared to citrate AuNPs; thirdly, we surmised the mechanisms which underlie the ultrastability and water-redispersibility of AuNPs capped with polyelectrolytic humate as opposed to low molecular weight citrate.…”

Section: Introductionmentioning

confidence: 99%

Non-classical growth of water-redispersible spheroidal gold nanoparticles assisted by leonardite humate

et al. 2017

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The growth of gold nanoparticles (AuNPs) assisted by humatea natural hyperbranched polyelectrolytewas studied using in situ and ex situ techniques. The conditions for formation of almost monodisperse gold nanospheres of 13 ± 3 nm diameter with pronounced plasmonic properties were defined. A striking similarity was found between humate-and citrate-mediated growth of AuNPs: the formation of gold nanospheres involved rapid nucleation of gold seeds, slow growth within the intermediate agglomerates (visible as nanoworms after drying on a TEM grid), and rapid peptization into the final gold nanospheres. Both humate and citrate syntheses produced ultrastable gold sols with pronounced plasmonic properties. The substantial difference was slower kinetics of humate synthesis, 240 min versus 15 min for citrate, and the water redispersible properties of the humate-capped gold nanospheres after freeze drying, which was not seen with the citrate AuNPs. Theoretical calculations revealed a leading role of steric factors in the formation of intermediate aggregates of capped AuNPs at the stage of their slow growth in the case of both citrate and humate. We suggested that it was the polyelectrolyte nature of humate which enabled the waterredispersibility of humate-versus citrate-capped gold nanoparticles.

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Nature-inspired soluble iron-rich humic compounds: new look at the structure and properties

Cited by 27 publications

References 28 publications

Arsenic and fluoride contaminated groundwaters: A review of current technologies for contaminants removal

Arsenic and fluoride contaminated groundwaters: A review of current technologies for contaminants removal

Eco-Friendly Iron-Humic Nanofertilizers Synthesis for the Prevention of Iron Chlorosis in Soybean (Glycine max) Grown in Calcareous Soil

Non-classical growth of water-redispersible spheroidal gold nanoparticles assisted by leonardite humate

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