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Synthesis and anti-fungal effect of silver nanoparticles-chitosan composite particles.

Wang LS, Wang CY, Yang CH, Hsieh CL, Chen SY, Shen CY, Wang JJ, Huang KS - Int J Nanomedicine (2015)

Bottom Line: The diameter of the synthesized chitosan composite particles ranged from 1.7 mm to 2.5 mm, and the embedded silver nanoparticles were measured to be 15 ± 3.3 nm.The results show that the silver nanoparticles were distributed over the surface and interior of the chitosan spheres.The fabricated spheres had macroporous property, and could be used for many applications such as fungicidal agents in the future.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical Engineering, I-Shou University, Kaohsiung, Taiwan ; Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan ; The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung, Taiwan ; Department of Chinese Medicine, E-Da Hospital, Kaohsiung, Taiwan.

ABSTRACT
Silver nanoparticles have been used in various fields, and several synthesis processes have been developed. The stability and dispersion of the synthesized nanoparticles is vital. The present article describes a novel approach for one-step synthesis of silver nanoparticles-embedded chitosan particles. The proposed approach was applied to simultaneously obtain and stabilize silver nanoparticles in a chitosan polymer matrix in-situ. The diameter of the synthesized chitosan composite particles ranged from 1.7 mm to 2.5 mm, and the embedded silver nanoparticles were measured to be 15 ± 3.3 nm. Further, the analyses of ultraviolet-visible spectroscopy, energy dispersive spectroscopy, and X-ray diffraction were employed to characterize the prepared composites. The results show that the silver nanoparticles were distributed over the surface and interior of the chitosan spheres. The fabricated spheres had macroporous property, and could be used for many applications such as fungicidal agents in the future.

No MeSH data available.


Related in: MedlinePlus

Schematic drawing of the silver nanoparticles–chitosan composite spheres synthesis.Notes: Droplets were pushed out from pin tip of a pump-driven syringe and then dropped into an NaOH solution, which was used for silver nanoparticles’ reduction and chitosan solidification. Silver nanoparticles–chitosan composite spheres were formed in 15 minutes. The distance between solidifying liquid surface and the tip was one centimeter. The diameter of the needle of the syringe was 8.73 mm.Abbreviations: AgNO3, silver nitrate; NaOH, sodium hydroxide.
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f1-ijn-10-2685: Schematic drawing of the silver nanoparticles–chitosan composite spheres synthesis.Notes: Droplets were pushed out from pin tip of a pump-driven syringe and then dropped into an NaOH solution, which was used for silver nanoparticles’ reduction and chitosan solidification. Silver nanoparticles–chitosan composite spheres were formed in 15 minutes. The distance between solidifying liquid surface and the tip was one centimeter. The diameter of the needle of the syringe was 8.73 mm.Abbreviations: AgNO3, silver nitrate; NaOH, sodium hydroxide.

Mentions: Based on our previous studies,41–44 the one-step production of silver nanoparticles–chitosan composite spheres is shown in Figure 1. Chitosan (0.2 g, dissolved in 10 mL of 1% v/v CH3COOH solution) and 2% 10 mL AgNO3 was mixed by constant stirring for 30 minutes, and then an AgNO3–chitosan mixture solution was obtained. The AgNO3–chitosan mixture solution was then dropped into a 20%, 30%, or 40%, 25 mL NaOH solution, respectively by using a syringe pump. After 15 minutes, yellow-brown color spheres (eg, silver nanoparticles–chitosan composite spheres) were yielded. Spheres were collected and washed twice with 30 mL of dd-H2O to remove residual alkali.


Synthesis and anti-fungal effect of silver nanoparticles-chitosan composite particles.

Wang LS, Wang CY, Yang CH, Hsieh CL, Chen SY, Shen CY, Wang JJ, Huang KS - Int J Nanomedicine (2015)

Schematic drawing of the silver nanoparticles–chitosan composite spheres synthesis.Notes: Droplets were pushed out from pin tip of a pump-driven syringe and then dropped into an NaOH solution, which was used for silver nanoparticles’ reduction and chitosan solidification. Silver nanoparticles–chitosan composite spheres were formed in 15 minutes. The distance between solidifying liquid surface and the tip was one centimeter. The diameter of the needle of the syringe was 8.73 mm.Abbreviations: AgNO3, silver nitrate; NaOH, sodium hydroxide.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4388074&req=5

f1-ijn-10-2685: Schematic drawing of the silver nanoparticles–chitosan composite spheres synthesis.Notes: Droplets were pushed out from pin tip of a pump-driven syringe and then dropped into an NaOH solution, which was used for silver nanoparticles’ reduction and chitosan solidification. Silver nanoparticles–chitosan composite spheres were formed in 15 minutes. The distance between solidifying liquid surface and the tip was one centimeter. The diameter of the needle of the syringe was 8.73 mm.Abbreviations: AgNO3, silver nitrate; NaOH, sodium hydroxide.
Mentions: Based on our previous studies,41–44 the one-step production of silver nanoparticles–chitosan composite spheres is shown in Figure 1. Chitosan (0.2 g, dissolved in 10 mL of 1% v/v CH3COOH solution) and 2% 10 mL AgNO3 was mixed by constant stirring for 30 minutes, and then an AgNO3–chitosan mixture solution was obtained. The AgNO3–chitosan mixture solution was then dropped into a 20%, 30%, or 40%, 25 mL NaOH solution, respectively by using a syringe pump. After 15 minutes, yellow-brown color spheres (eg, silver nanoparticles–chitosan composite spheres) were yielded. Spheres were collected and washed twice with 30 mL of dd-H2O to remove residual alkali.

Bottom Line: The diameter of the synthesized chitosan composite particles ranged from 1.7 mm to 2.5 mm, and the embedded silver nanoparticles were measured to be 15 ± 3.3 nm.The results show that the silver nanoparticles were distributed over the surface and interior of the chitosan spheres.The fabricated spheres had macroporous property, and could be used for many applications such as fungicidal agents in the future.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical Engineering, I-Shou University, Kaohsiung, Taiwan ; Department of Biomedical Engineering, I-Shou University, Kaohsiung, Taiwan ; The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung, Taiwan ; Department of Chinese Medicine, E-Da Hospital, Kaohsiung, Taiwan.

ABSTRACT
Silver nanoparticles have been used in various fields, and several synthesis processes have been developed. The stability and dispersion of the synthesized nanoparticles is vital. The present article describes a novel approach for one-step synthesis of silver nanoparticles-embedded chitosan particles. The proposed approach was applied to simultaneously obtain and stabilize silver nanoparticles in a chitosan polymer matrix in-situ. The diameter of the synthesized chitosan composite particles ranged from 1.7 mm to 2.5 mm, and the embedded silver nanoparticles were measured to be 15 ± 3.3 nm. Further, the analyses of ultraviolet-visible spectroscopy, energy dispersive spectroscopy, and X-ray diffraction were employed to characterize the prepared composites. The results show that the silver nanoparticles were distributed over the surface and interior of the chitosan spheres. The fabricated spheres had macroporous property, and could be used for many applications such as fungicidal agents in the future.

No MeSH data available.


Related in: MedlinePlus