Biogenic synthesis of antioxidant, shape selective gold nanomaterials mediated by high altitude lichens

被引：21

作者：

Debnath, Rupam ^{[1
]}

Purkayastha, Debraj Dhar ^{[2
]}

Hazra, Subhenjit ^{[3
]}

Ghosh, Narendra Nath ^{[3
]}

Bhattacharjee, Chira R. ^{[2
]}

Rout, Jayashree ^{[1
]}

机构：

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

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

[3] BITS Pilani, Dept Chem, Nanomat Lab, KK Birla Goa Campus, Zuarinagar 403726, Goa, India

来源：

MATERIALS LETTERS | 2016年 / 169卷

关键词：

Biosynthesis; Nanoparticles; Electron microscopy; Multiply twinned; Antioxidant activity; SILVER NANOPARTICLES; BIOLOGICAL SYNTHESIS; GREEN SYNTHESIS; BIOSYNTHESIS; ALGA;

D O I：

10.1016/j.matlet.2016.01.072

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Biogenic synthesis of gold nanoparticles have been accomplished using dried biomass of two high altitude lichen species, collected from the alpine region of Eastern Himalaya in Arunachal Pradesh state of North East India, without addition of any external reducing or stabilizing chemicals. The nanoparticles were characterised by UV-visible, FT-IR spectroscopy, powder X-ray diffraction (XRD), and transmission electron microscopy (TEM). The as-obtained gold nanoparticles showed surface plasmon resonance (SPR) band at similar to 535 nm. The XRD study furnished evidence for the formation of face-centered cubic structure of gold nanomaterials. The nanoparticles produced with Acroscyphus sp. consisted of multiply twinned quasi-spherical and prismatic shapes while those accessed with Sticta sp. are exclusively multiply twinned. The biomatrix loaded gold nanomaterial exhibited pronounced antioxidant activity. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：58 / 61

页数：4

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