Nanoparticles of noble metals in peat of the Upper and Middle Amur Region

Radomskii, S. M.; Radomskaya, V. I.; Moiseenko, N. V.; Moiseenko, V. G.

doi:10.1134/s1028334x09040242

Cited by 6 publications

(5 citation statements)

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“…Numerous functions are performed by SOM in soil: starting from physical functions (stabilization of soil structure, water retention, thermal properties) [156][157][158][159][160]; throughout chemical functions (retention of cations, buffering capacity and pH effects, chelation of metals, interactions with xenobiotics); ending with the biochemical functions such as reservoir of metabolic energy, source of macronutrients, ecosystem resilience [156,158], or even allelopathy [161]. Interestingly, the reducing environment of humic acids promotes the formation of metallic and oxide nanoparticles in both laboratory and natural conditions [78,162,163].…”

Section: Interference Of Redox Processes By Soil Organic Matter Impac...mentioning

confidence: 99%

“…For example, humified organic matter and polyvalent metal cation complexes take part in the formation of micro-aggregates with clusters and silt particles, oxides, and aluminosilicates [157]. On the other hand the immobilization of toxic to plants noble metals, by humic acids of peat, in the form of metal nanoparticles was observed [162,164] and confirmed in laboratory condition [78,[165][166][167]. Unfortunately water-soluble humic acid (HA) compounds in the disinfection processes of drinking water and wastewater are considered as precursors of highly toxic, carcinogenic and mutagenic disinfectant by-products [168,169].…”

Section: Interference Of Redox Processes By Soil Organic Matter Impac...mentioning

confidence: 99%

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Perspectives for Photocatalytic Decomposition of Environmental Pollutants and Pathogens on Photoactive Particles of Soil Minerals

Sosnowska,

Hęclik,

Kisała

et al. 2024

Preprint

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The literature shows that both in laboratory and in industrial conditions, photocatalytic oxidation method copes quite well with the degradation of the most organic substances, including environmental toxins and molecular components of pathogenic microorganisms. However, the effective utilization of photocatalytic processes for environmental decontamination and disinfection require significant technological advancement both in the area of semiconductor material synthesis and its application. Here we focused on the presence and ‘photocatalytic capability‘ of photocatalysts among soil minerals, and their potential contribution to the environmental decontamination in vitro and in vivo. (The issue is sketched from the perspective of chemists and environmental scientist.) Reactions caused by sunlight on the soil surface are involved in its normal redox activity. It appears that some of them may take part in the soil decontamination. However, their importance for decontamination in vivo cannot be overstated due to diversity of soils on the Earth caused by the environmental conditions, such as climate, parent material, relief, vegetation etc. The solar-light induced reactions are just a part of extremely complicated processes dependent on a plethora of environmental determinates. Such multiplicity of affecting factors, which we tried to sketch from the perspective of chemists and environmental scientist, makes us rather sceptical about the effectiveness of the photocatalytic processes in vivo. On the other hand, there is a huge potential of the soils as the alternative source of useful photocatalytic materials of unique properties

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Section: Interference Of Redox Processes By Soil Organic Matter Impac...mentioning

confidence: 99%

Section: Interference Of Redox Processes By Soil Organic Matter Impac...mentioning

confidence: 99%

Perspectives for Photocatalytic Decomposition of Environmental Pollutants and Pathogens on Photoactive Particles of Soil Minerals

Sosnowska,

Hęclik,

Kisała

et al. 2024

Preprint

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“…The con finement of anomalous gold and platinum group ele ment contents in peats and coals is a reason for the close attention of researchers to organic matter [1,2]. The chemical speciation of noble metals in coalfields is diverse: individual minerals, isomorphous impuri ties in sulfides, and organic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…The products formed upon the addition of an alkali to a solution of Н2 [PdCl 4 ] are supposedly polynuclear com plexes containing ОHand H 2 О ligands ([Pd(H 2 О) 2 ОH] + and [Pd(H 2 О) 2 (ОH) 2 ]) or the colloidal particles of Pd(II) hydroxide. With a further increase in pH, the complexes [Pd(OH)] + and [Pd(OH) 4 ] 2are formed;…”

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confidence: 99%

Interactions of peat and its components with gold and palladium ions in aqueous solutions

et al. 2015

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The processes of gold and palladium concentration by lowland peat and humic acids and nonhy drolyzed residue separated from it in a pH range characteristic of surface water were experimentally studied at the stage of peat formation. It was established that the interaction of peat with the complex chloride anions of noble metals occurs by reducing sorption. A higher affinity of the test sorbents for the complex anions of gold, as compared with that of palladium, was revealed. The experimental data suggest that gold and palla dium can be quantitatively precipitated on naturally occurring geochemical barriers.

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“…The idea of humus acids, as elements catching and deactivating metal ions, was taken from nature, which in spite of appearances often better than human manages with various threats and finds ways to neutralize them. In the area of Amur River on the coastal peat bogs, humus acids with aggregated ions of such metal like: Ru, Rh, Pd, Ag, Os, Ir, Pt or Au were found [7][8][9]. It gave some kind of hope for creating a tool that would detoxify soil contaminated with heavy metals by phytoremediation using peat with right composition and value of pH.…”

mentioning

confidence: 99%

Metal-Humus Acid Nanoparticles - Synthesis, Characterization and Molecular Modeling

Hęclik¹,

Zarzyka²

2021

Pol. J. Environ. Stud.

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In the scientific literature, there is a clear lack of information about deciphering of possible mechanisms of creating metal nanoparticles. The methods described so far are primarily based on the enzymatic reduction (dehydrogenase) relied on the nicotinamidoadenine-dinucleotide (NADH) oxidation [1]. In simultaneous oxidation-reducing reactions, the proper environment was created because of need for reducing metal cations, most often to the form of non-reactive metallic nanoparticles. Similar applications were also shown by reducing sugars [2] or flawonoids [3][4][5][6], as examples of chemical compounds of natural origin. The idea of formation nanoparticles was based on the use of an environment that had properties of reducing metal cations to inert particles having most often nanometric dimensions. With the increase in public awareness

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Nanoparticles of noble metals in peat of the Upper and Middle Amur Region

Cited by 6 publications

References 0 publications

Perspectives for Photocatalytic Decomposition of Environmental Pollutants and Pathogens on Photoactive Particles of Soil Minerals

Perspectives for Photocatalytic Decomposition of Environmental Pollutants and Pathogens on Photoactive Particles of Soil Minerals

Interactions of peat and its components with gold and palladium ions in aqueous solutions

Metal-Humus Acid Nanoparticles - Synthesis, Characterization and Molecular Modeling

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