The greener synthesis of nanoparticles

Kharissova, Oxana V.; Dias, H. V. Rasika; Kharisov, Boris I.; Pérez, Betsabee Olvera; Jiménez-Pérez, Vı́ctor M.

doi:10.1016/j.tibtech.2013.01.003

Cited by 920 publications

(433 citation statements)

References 59 publications

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“…Another report notes that morphology of 15-30 nm copper oxide nanoparticles can be controlled by regulating the amount of Aloe vera extract. This ecological approach for synthesis is suitable for commercial scale production and related health CuO nanoparticles applications (Gunalan et al, 2012;Kharissova et al, 2013. ).…”

Section: Discussionmentioning

confidence: 99%

Copper Nanoparticles as Potential Antimicrobial Agent in Disinfecting Root Canals: A Systematic Review

Sánchez‐Sanhueza

Fuentes‐Rodríguez

Bello-Toledo

2016

Int. J. Odontostomat.

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ABSTRACT:Copper was registered as the first solid antimicrobial material. Its availability makes it an important option as an antibacterial agent. At nanoparticle size it does not exceed 100 nm, allowing close interaction with microbial membranes, enhancing its effect even more. Copper generates toxic hydroxyl radicals that damage cell membranes of Gram-negative and Gram-positive bacteria, among the latter, Enterococcus faecalis, which are present in infected radicular canals. Synthesis of metal nanoparticles with antimicrobial properties has become a viable alternative and has promising applications in the fight against pathogenic microorganisms. Furthermore, the use of some polymers to stabilize nanoparticles increases their release time and may as well decrease the risk of bacterial recolonization and biofilm formation within the ducts, enhancing the antimicrobial properties of these compounds.The aim of this article is to conduct a systematic review of the literature on antimicrobial copper nanoparticles, their current applications and their potential use in the area of oral health, specifically in the field of endodontics.

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Section: Discussionmentioning

confidence: 99%

Copper Nanoparticles as Potential Antimicrobial Agent in Disinfecting Root Canals: A Systematic Review

Sánchez‐Sanhueza

Fuentes‐Rodríguez

Bello-Toledo

2016

Int. J. Odontostomat.

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“…silver, titanium dioxide, zinc oxide, Platinum, Gold and Paledium. However, silver (Ag) is used for formulation of bulk coins, which was replaced by ionic silver and in current, it is molded for colloidal silver NP (Kharissova et al 2013;Rai et al 2012). It is used in the nitrate form to induce the antimicrobial effects, but when silver nanoparticles are used, there is a huge increase in the surface area to interact with microbes efficiently.…”

Section: Introductionmentioning

confidence: 99%

Silver nano fabrication using leaf disc of Passiflora foetida Linn

Lade

Patil

2017

Appl Nanosci

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The main purpose of the experiment is to develop a greener low cost SNP fabrication steps using factories of secondary metabolites from Passiflora leaf extract. Here, the leaf extraction process is omitted, and instead a leaf disc was used for stable SNP fabricated by optimizing parameters such as a circular leaf disc of 2 cm (1, 2, 3, 4, 5) instead of leaf extract and grade of pH (7, 8, 9, 11). The SNP synthesis reaction is tried under room temperature, sun, UV and dark condition. The leaf disc preparation steps are also discussed in details. The SNP obtained using (1 mM: 100 ml AgNO 3 ? singular leaf disc: pH 9, 11) is applied against featured room temperature and sun condition. The UV spectroscopic analysis confirms that sun rays synthesized SNP yields stable nano particles. The FTIR analysis confirms a large number of functional groups such as alkanes, alkyne, amines, aliphatic amine, carboxylic acid; nitro-compound, alcohol, saturated aldehyde and phenols involved in reduction of silver salt to zero valent ions. The leaf disc mediated synthesis of silver nanoparticles, minimizes leaf extract preparation step and eligible for stable SNP synthesis. The methods sun and room temperature based nano particles synthesized within 10 min would be use certainly for antimicrobial activity.

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“…Both CheSeNPs and BioSeNPs adsorb mercury from mercury vapor by forming mercury selenide precipitates [11,12,13]. However, chemical elemental selenium nanoparticles production methods entail high production costs and are not environmental benign due to the use of toxic solvents, high temperature and high pressure [14,15,16]. In contrast, BioSeNPs can be produced at an ambient temperature without the use of specialized equipments [7,17].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of zinc by biogenic elemental selenium nanoparticles

Jain

Jordan

Schild

et al. 2015

Chemical Engineering Journal

130

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The adsorption of Zn 2+ ions onto biogenic elemental selenium nanoparticles (BioSeNPs) was investigated. BioSeNPs were produced by reduction of selenite (SeO 3 2− ) in the presence of anaerobic granules from a full scale upflow anaerobic sludge blanket (UASB) reactor treating paper mill wastewater. The BioSeNPs have an iso-electric point at pH 3.8 at 5 mM background electrolyte concentration. X-ray photoelectron spectroscopy showed the presence of a layer of extracellular polymeric substances on the surface of BioSeNPs providing colloidal stability. Batch adsorption experiments showed that the uptake of Zn 2+ ions by BioSeNPs was fast and occurred at a pH as low as 3.9. The maximum adsorption capacity observed was 60 mg of zinc adsorbed per g of BioSeNPs. The Zn 2+ ions adsorption on the BioSeNPs was largely unaffected by the presence of Na + and Mg 2+ , but was impacted by the presence of Ca 2+ and Fe 2+ ions.

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The greener synthesis of nanoparticles

Cited by 920 publications

References 59 publications

Copper Nanoparticles as Potential Antimicrobial Agent in Disinfecting Root Canals: A Systematic Review

Copper Nanoparticles as Potential Antimicrobial Agent in Disinfecting Root Canals: A Systematic Review

Silver nano fabrication using leaf disc of Passiflora foetida Linn

Adsorption of zinc by biogenic elemental selenium nanoparticles

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