Silver nanoparticles on amidoxime fibers for photo-catalytic degradation of organic dyes in waste water

Wu, Zhichuan; Zhang, Yong; Tao, Tingxian; Zhang, Lifeng; Fong, Hao

doi:10.1016/j.apsusc.2010.08.022

Cited by 130 publications

(50 citation statements)

References 25 publications

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“…As an alternative to using TiO 2 , the possibility of using a new photo-catalyst of silver nanoparticles attached on the surface of amidoxime fibers to degrade Methyl Orange (MO) under sunlight was attempted [24]. Results obtained indicated that the silver nanoparticles initiated and mediated the photo-oxidation reaction of MO through localized surface plasmon resonance under sunlight.…”

Section: Catalytic Oxidationmentioning

confidence: 99%

Dye Waste Treatment

Ong

Keng

Lee

et al. 2011

Water

112

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Dye wastes represent one of the most problematic groups of pollutants because they can be easily identified by the human eye and are not easily biodegradable. This literature review paper highlights and provides an overview of dye waste treatments performed over the three years period from 2008-2010. Noteworthy processes for the treatment of dye waste include biological treatment, catalytic oxidation, filtration, sorption process and combination treatments.

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Section: Catalytic Oxidationmentioning

confidence: 99%

Dye Waste Treatment

Ong

Keng

Lee

et al. 2011

Water

112

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“…The complete degradation of dye was observed within 20 min from bright orange colour to light yellow colour ( figure 6(b)). The probable mechanism of degradation could be attributed to the SPR effect where the excited surface electrons might interact with the dissolved oxygen molecules and ultimately produce hydroxyl radicals while allowing Ag + ions to interact with the anionic dye [42,43]. Hence, it is evident that AgNPs synthesized from Cordia dichotoma leaf extract is highly potential photocatalytic agent for dye degradation in the presence of sunlight.…”

Section: Photocatalysismentioning

confidence: 99%

Antibacterial and photocatalytic degradation efficacy of silver nanoparticles biosynthesized using Cordia dichotoma leaf extract

Kumari

Thapa

Gupta

et al. 2016

Adv. Nat. Sci: Nanosci. Nanotechnol.

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The present study focuses on the biosynthesis of silver nanoparticles (AgNPs) along with its antibacterial and photocatalytic activity. The AgNPs were synthesized using Cordia dichotoma leaf extract and were characterized using UV-vis spectroscopy to determine the formation of AgNPs. FTIR was done to discern biomolecules responsible for reduction and capping of the synthesized nanoparticles. Further, DLS technique was performed to examine its hydrodynamic diameter, followed by SEM, TEM and XRD to determine its size, morphology and crystalline structure. Later, these AgNPs were studied for their potential role in antibacterial activity and photocatalytic degradation of azo dyes such as methylene blue and Congo red.

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“…Nowadays biosynthesis nanocatalysts are widely used for the effective removal of dye contaminants. plant products represent excellent platforms for this purpose [6][7][8]13]. The compounds present in plants that have different potential biological activities; phytochemicals are important natural resource for the synthesis of metal nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, TiO 2 has a relatively large energy band-gap and only absorbs UV region, while the UV lights only contribute to less than 10% of total solar radiations; the visible lights, on the other hand, contribute to 50% of the solar radiations. It's a crucial drawback in photo-catalysts of TiO 2 based application [6]. So, in the recent years have been many research efforts devoted to improve the photocatalytic activity by incorporating of metal particles (silver, gold and iron) [7][8][9], to broaden the absorption of solar radiations by doping with nitrogen and to reactivate the TiO 2 -based photo-catalysts by treating with heat [10,11].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Degradation of Organic Dyes using Synthesized Silver Nanoparticles: A Green Approach

S¹,

M²,

MV³

2015

J Bioremed Biodeg

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The scientific community is search in for new methods for the synthesis of metallic nanoparticles. Green synthesis has now become a vast developing area of new research groups. Here we report a green method to the synthesis of silver nanoparticles (AgNPs) using the different parts of Vishanika or Indian screw tree, an ayurvedic medicinal tree. This is nontoxic, eco-friendly and low cost method. The reduction and stabilization capability of the plant extracts of different parts are described. The size and structure of the silver can be characterized by varying the plant parts of the vishanika. The biosynthesized nanoparticles are characterized by using UV-VIS spectroscopy, TEM, XRD, DLS and FTIR. The size and extract dependent catalytic activity of the biosynthesized nanoparticles is established in the degradation of organic dyes.plant products represent excellent platforms for this purpose [6][7][8]13]. The compounds present in plants that have different potential biological activities; phytochemicals are important natural resource for the synthesis of metal nanoparticles. They play important roles in both stabilization and reduction of nanoparticles. The focus of the present work is to apply the accurate principles of green chemistry for the synthesis of silver nanoparticles by using stem bark, root and leaf of Helicteres isora extracts as stand-alone reducing and capping agent. H. isora plant extracts possess anticancer properties [14]. Usually, the bark and root juice were used against diabetes and emphysema. In traditional medicine, the bark and root juice is claimed to be useful in snake bite, diabetes, blood disorder, cough, colic, diarrhoea, astringent, etc., [15], expectorant and astringent [16], hypolipidemic [17], antihyperglycemic activity and glibenclamide [18]. In the present study, we have investigated the extracts and size dependent catalytic degradation of organic dyes-methyl violet, safranin, eosin methylene blue and methyl orange by in the presence of silver colloids. Materials and MethodsSilver nitrate (99.99%), methyl violet, safranin, eosin methylene blue and methyl orange, were purchased from sigma Aldrich. All glassware's were cleaned with sterile distilled water and rinsed with deionized water. Preparation of extractDifferent parts of (stem bark, root and leaf) H. isora were collected from Western Ghats of Tamil Nadu, washed with sterile distilled water and dried, then make it powder. 1 g of each explants powder was mixed with 100 mL of water and kept on orbital shaker at 120 rpm for 12 h. After that, the extracts were filtered with filter paper and stored at 4 0 C in refrigerator until further use. Journal of Bior emediation & Biodegradation Synthesis of silver nanoparticlesSilver nanoparticles (stem bark (S), root (R) and leaf (L)) have been synthesized by Bhakya et al. [19] method with slight modification. The formation of AgNPs is indicated by the appearance of dark brown color within 5 min. CharacterizationUV-visible spectra analysis was performed for all samples and the abs...

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Silver nanoparticles on amidoxime fibers for photo-catalytic degradation of organic dyes in waste water

Cited by 130 publications

References 25 publications

Dye Waste Treatment

Dye Waste Treatment

Antibacterial and photocatalytic degradation efficacy of silver nanoparticles biosynthesized using Cordia dichotoma leaf extract

Catalytic Degradation of Organic Dyes using Synthesized Silver Nanoparticles: A Green Approach

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