A method for the preparation of silver nanoparticles using commercially available carboxymethyl chitosan and sunlight

Long, Yi; Ran, Xinze; Zhang, Lilong; Guo, Qinyuan; Yang, Tao; Gao, Jining; Cheng, Humin; Cheng, Tianmin; Chen, Shi; Su, Yongping

doi:10.1016/j.matlet.2013.09.035

Cited by 22 publications

(10 citation statements)

References 23 publications

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“…Long et al synthesized AgNPs by using commercially available CMC and sunlight, but this process was time-consuming and the resulting AgNPs were around 100 nm in size. 25 In an effort to prepare small AgNPs rapidly, An et al used CMC as a stabilizer, but an environmentally harmful reducing agent, NaBH 4 , was required. 26 Glucose is the most abundant natural monosaccharide, and its free-aldehyde group makes it a remarkable nontoxic reducing agent for producing nanometals.…”

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confidence: 99%

In situ green synthesis of antimicrobial carboxymethyl chitosan–nanosilver hybrids with controlled silver release

Huang¹,

Yu²,

Zhang³

et al. 2017

IJN

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In order to fabricate antimicrobial carboxymethyl chitosan–nanosilver (CMC-Ag) hybrids with controlled silver release, this study demonstrated comparable formation via three synthetic protocols: 1) carboxymethyl chitosan (CMC) and glucose (adding glucose after AgNO 3 ), 2) CMC and glucose (adding glucose before AgNO 3 ), and 3) CMC only. Under principles of green chemistry, the synthesis was conducted in an aqueous medium exposed to microwave irradiation for 10 minutes with nontoxic chemicals. The structure and formation mechanisms of the three CMC-Ag hybrids were explored using X-ray diffraction, ultraviolet-visible spectroscopy, transmission electron microscopy, and Fourier-transform infrared analyses. Additionally, antimicrobial activity and in vitro silver release of the three synthesized hybrids were investigated in detail. The results revealed that a large number of stable, uniform, and small silver nanoparticles (AgNPs) were synthesized in situ on CMC chains via protocol 1. AgNPs were well dispersed with narrow size distribution in the range of 6–20 nm, with mean diameter only 12.22±2.57 nm. The addition of glucose resulted in greater AgNP synthesis. The order of addition of glucose and AgNO 3 significantly affected particle size and size distribution of AgNPs. Compared to CMC alone and commercially available AgNPs, the antimicrobial activities of three hybrids were significantly improved. Of the three hybrids, CMC-Ag1 synthesized via protocol 1 exhibited better antimicrobial activity than CMC-Ag2 and CMC-Ag3, and showed more effective inhibition of Staphylococcus aureus than Escherichia coli . Due to strong coordination and electrostatic interactions between CMC and silver and good steric protection provided by CMC, CMC-Ag1 displayed stable and continuous silver release and better performance in retaining silver for prolonged periods than CMC-Ag2 and CMC-Ag3.

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confidence: 99%

In situ green synthesis of antimicrobial carboxymethyl chitosan–nanosilver hybrids with controlled silver release

Huang¹,

Yu²,

Zhang³

et al. 2017

IJN

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“…Biopolymers (cellulose and its derivatives, chitosan and its derivatives, alginate, dextran, and tree gums) are another family of natural sources used as reducing and stabilizing agents for metal and metal oxide nanoparticle synthesis [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58]. Vitamin B 1 , Vitamin B 2 (riboflavin), Vitamin C (ascorbic acid), coffee and tea extracts, beet juice, and grape pomace are well-known natural reducing agents or antioxidants used for the synthesis of stable nanoparticles and are comprehensively reported [59][60][61][62][63][64][65].…”

Section: Natural and Renewable Sources Of Reducing Agents For The Synmentioning

confidence: 99%

Green Synthesis: Nanoparticles and Nanofibres Based on Tree Gums for Environmental Applications

Padil

Černík

2016

Ecological Chemistry and Engineering S

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Abstract:The recent advances and potential applications of nanoparticles and nanofibres for energy, water, food, biotechnology, the environment, and medicine have immensely conversed. The present review describes a 'green' method for the synthesis and stabilization of nanoparticles and 'green electrospinning' both using tree gums (arabic, tragacanth, karaya and kondagogu). Furthermore, this review focuses on the impending applications of both gum stabilized nanoparticles and functionalized membranes in remediation of toxic metals, radioactive effluents, and the adsorptive removal of nanoparticulates from aqueous environments as well as from industrial effluents. Besides, the antibacterial properties of gum derivatives, gum stabilized nanoparticles, and functionalized electrospun nanofibrous membranes will also be highlighted. The functionalities of nanofibrous membranes that can be enhanced by various plasma treatments (oxygen and methane, respectively) will also be emphasized.

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“…Se ha reportado la síntesis de nanopartículas de plata utilizando carboximetilquitosano como reductor y estabilizante y la presencia de un reductor adicional como epiclorhidrina 6 o mediante técnicas como la preparación de nanopartículas de plata a partir de nitrato de plata y carboximetilquitosano comercial por la técnica de irradiación solar 7 . Por otro lado, desarrollaron la síntesis de carboximetilquitosano cuaternizado soluble en agua como agente reductor y estabilizador para la preparación de nanopartículas de plata bajo irradiación de microondas en presencia del reactivo de Tollens como la fuente de plata 8,3 .…”

Section: Introductionunclassified

OBTENCIÓN Y CARACTERIZACIÓN DEL NANOCOMPOSITO: NANOPARTÍCULAS DE PLATA Y CARBOXIMETILQUITOSANO (NPsAg-CMQ)

Álvarez

Núñez

Chavez

et al. 2019

rsqp

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Se realizó la síntesis del nanocomposito, nanopartículas de plata y O-carboximetil quitosano (NPsAg-CMQ), por el método de reducción química, utilizando el O-carboximetilquitosano 0,01 % y AgNO3 1 mM en una proporción de 3:2, con un tiempo de reacción de 30 minutos a temperatura ambiente y pH neutro. El nanocomposito obtenido a partir del complejo [Ag(NH3)2]+ fue sintetizado bajo las mismas condiciones que el AgNO3, pero a un pH básico. Por espectrofotometría UV-VIS, se verificó la formación del plasmón de nanopartículas de plata a 410 nm, para ambas fuentes de plata. Los resultados por Dispersión Dinámica de Luz (DLS) para el AgNO3, muestra una distribución monodispersa del nanocomposito con un tamaño hidrodinámico promedio de 166,7 nm. En el caso del diaminplata [Ag(NH3)2]+ un 83,9 % tuvieron un tamaño promedio de 54,42 nm. y 15,2 % de 4,48 nm. Mediciones de Espectroscopia Infrarroja con Transformada de Fourier (FT-IR) muestra la inhibición de las bandas espectrales a 879 y 723 cm-1 indicando la presencia de las NPsAg en el nanocomposito NPsAg-CMQ. Los resultados de Microscopía Electrónica de Barrido (SEM-STEM) evidenciaron que las nanopartículas de plata en el nanocomposito fueron de forma esférica y de un tamaño de 5 a 20 nm.

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A method for the preparation of silver nanoparticles using commercially available carboxymethyl chitosan and sunlight

Cited by 22 publications

References 23 publications

In situ green synthesis of antimicrobial carboxymethyl chitosan–nanosilver hybrids with controlled silver release

In situ green synthesis of antimicrobial carboxymethyl chitosan–nanosilver hybrids with controlled silver release

Green Synthesis: Nanoparticles and Nanofibres Based on Tree Gums for Environmental Applications

OBTENCIÓN Y CARACTERIZACIÓN DEL NANOCOMPOSITO: NANOPARTÍCULAS DE PLATA Y CARBOXIMETILQUITOSANO (NPsAg-CMQ)

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A method for the preparation of silver nanoparticles using commercially available carboxymethyl chitosan and sunlight

Cited by 22 publications

References 23 publications

In situ green synthesis of antimicrobial carboxymethyl chitosan&ndash;nanosilver hybrids with controlled silver release

In situ green synthesis of antimicrobial carboxymethyl chitosan&ndash;nanosilver hybrids with controlled silver release

Green Synthesis: Nanoparticles and Nanofibres Based on Tree Gums for Environmental Applications

OBTENCIÓN Y CARACTERIZACIÓN DEL NANOCOMPOSITO: NANOPARTÍCULAS DE PLATA Y CARBOXIMETILQUITOSANO (NPsAg-CMQ)

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In situ green synthesis of antimicrobial carboxymethyl chitosan–nanosilver hybrids with controlled silver release

In situ green synthesis of antimicrobial carboxymethyl chitosan–nanosilver hybrids with controlled silver release