One-pot, aqueous synthesis of multifunctional biogenic Ag NPs for efficient 4-NP reduction, Hg2+ detection, bactericidal, and antioxidant activities

被引:10
作者
Ayodhya, Dasari [1 ]
Veerabhadram, Guttena [1 ]
机构
[1] Osmania Univ, Univ Coll Sci, Dept Chem, Hyderabad 500007, Telangana, India
关键词
PDS-Ag NPs; 4-nitrophenol reduction; Hg2+ detection; antibacterial activity; antioxidant activity;
D O I
10.1080/24701556.2020.1857407
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
We have developed a green and environmentally friendly approach for the synthesis of silver nanoparticles (Ag NPs) using Pithecellobium dulce seeds (PDS) extract via a simple route and characterized by several techniques. Ag NPs have an average particle size is 8 nm and used as a catalyst for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) within 3 min of reaction. Ag NPs could be easily recovered and reused five times without significant loss in its catalytic activity. The synthesized Ag NPs were investigated for optical sensing of various metal ions in aqueous solutions by monitoring their surface plasmon resonance (SPR), results showed that the selective response to mercury (Hg2+) ions. Ag NPs exhibited significant antibacterial activity against several microorganisms including Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Bacillus subtilis by a paper-disk method. The synthesized Ag NPs also exhibited virtuous antioxidant activity.
引用
收藏
页码:1831 / 1841
页数:11
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