A facile green synthesis route to silver nanoparticles using cyanobacterium Nostoc carneum and its photocatalytic, antibacterial and anticoagulative activity

被引：27

作者：

Borah, Debasish ^{[1
]}

Das, Neeharika ^{[1
]}

Sarmah, Pampi ^{[2
]}

Ghosh, Kheyali ^{[3
]}

Chandel, Madhurya ^{[4
]}

Rout, Jayashree ^{[2
]}

Pandey, Piyush ^{[3
]}

Ghosh, Narendra Nath ^{[4
]}

Bhattacharjee, Chira R. ^{[1
]}

机构：

[1] Assam Univ, Dept Chem, Silchar 788011, Assam, India

[2] Assam Univ, Dept Ecol & Environm Sci, Silchar 788011, Assam, India

[3] Assam Univ, Dept Microbiol, Silchar 788011, Assam, India

[4] BITS Pilani, Dept Chem, Nanomat Lab, KK Birla Goa Campus, Sancoale 403726, India

来源：

MATERIALS TODAY COMMUNICATIONS | 2023年 / 34卷

关键词：

Green synthesis; Nostoc carneum; Silver nanoparticles; Photocatalytic; Antibacterial; LEAF EXTRACT; GOLD NANOPARTICLES; FILAMENTOUS CYANOBACTERIA; ANTIMICROBIAL ACTIVITY; METAL NANOPARTICLES; BIOSYNTHESIS; ANTIOXIDANT; BIOFABRICATION; REDUCTION; DEGRADATION;

D O I：

10.1016/j.mtcomm.2022.105110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A facile green synthesis method for the synthesis of silver nanoparticles (AgNPs) using dried biomass of a cyanobacterium, Nostoc carneum has been developed by reduction of aqueous solution of silver nitrate. The as-synthesized silver nanoparticles were characterized using ultraviolet-visible (UV-Vis) spectrophotometry, transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX) and dynamic light scattering (DLS) studies confirmed the formation of polydispersed, quasi-spherical shaped silver nanoparticles with 4-22 nm size stable beyond similar to 90 days. Fourier transform infrared (FTIR) analysis indicated the presence of phytochemicals on the AgNPs surface which served as both reducing and capping agents. The powder X-ray diffraction (XRD) study indicated a face-centered cubic crystalline structure of the nanoparticles. The as-synthesized silver nanoparticles exhibited a rather high photocatalytic activity for the degradation of two water soluble dyes, methylene blue (MB) and 2-Nitroaniline (2-NA) with degradation efficiency 92.5% and 82.5%, respectively. Kinetic study of the degradation reaction revealed the rates to be pseudo-first order in nature with rate constants 0.1138 min(-1) and 0.0443 min(-1) for MB and 2-NA, respectively. Significant anti-bacterial activity of the AgNPs against four selected pathogenic bacterial strains was observed. Further, the phytomolecule loaded AgNPs exhibited anticoagulant activity by inhibiting the human blood clotting for > 4 h.

引用

页数：13

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