Sunlight-assisted synthesis of colloidal silver nanoparticles using chitosan as reducing agent

12th Joint Conference on Chemistry

Susilowati, E.^1 ; Maryani^2 ; Ashadi^1

Chemistry Education Department, Faculty of Teacher Training and Education, Universitas Sebelas Maret, Surakarta, Indonesia^1

Medical Doctor Program, Faculty of Medicine, Universitas Sebelas Maret Surakarta, Jl. Ir Sutami 36 A, Surakarta

53126, Indonesia^2

关键词: Absorption peaks;    Colloidal silver nanoparticle;    Localized surface plasmon resonance;    Reducing process;    Shape and size;    Silver particles;    Sunlight irradiation;    UV-Vis spectrophotometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/349/1/012019/pdf
DOI  :  10.1088/1757-899X/349/1/012019

来源: IOP

【 摘 要 】

The present study we explore an environmentally friendly colloidal silver nanoparticles preparation using chitosan as reducing agent and stabilizer. It develops a new strategy on preparation of silver nanoparticles through the gel phase using sodium hydroxide (NaOH) as accelerator reagent. Sunlight irradiation was employed to assisted reducing process of silver ions to silver nanoparticles. Localized surface plasmon resonance (LSPR) phenomenon of silver nanoparticles was investigated using UV-Vis spectrophotometer. The shape and size of silver particles were analyzed using TEM. The formation of silver nanoparticles was confirmed by the appearance of LSPR absorption peak at 396.0-412.0 nm. The absorption peak of LSPR were affected by NaOH amount, time of sulight irradiation and concentration of AgNO3. The produced silver nanoparticles were spherical with dominant size range of 5 to 8 nm as shown by TEM images. All colloidals were stable without any aggregation for 30 days after preparation.