Effect of Temperature on the Optical and Antioxidant Properties of Bio and Organic Synthesised Hematite Nanoparticles

2nd International Conference on Materials Science and Technology

Somaraj, Malu^1 ; John, Nancy^1 ; Tharayil, Nisha J.^2 ; Usha, S.^3

Department of Physics, S.N College, Kollam Kerala, India^1

Department of Physics, S.N College for Women, Kollam Kerala, India^2

Department of Zoology, S.N College for Women, Kollam Kerala, India^3

关键词: Antioxidant properties;    Effect of temperature;    Hematite nanoparticles;    Metal oxide nanoparticles;    Morphological changes;    Preparation conditions;    Radical scavenging activity;    UV-vis spectroscopy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/360/1/012017/pdf
DOI  :  10.1088/1757-899X/360/1/012017

来源: IOP

【 摘 要 】

The hematite nanoparticles with tunable band gap were synthesised through a simple and novel co-precipitation technique using bio (DNA) and organic (EDTA) templates. The obtained precursor was heated on the basis of TGA to obtain the metal oxide nanoparticles. The crystalline and morphological changes during heat treatment of synthesised sample were discussed using XRD, SEM and TEM analysis. The optical characterisations were done using UV-Vis spectroscopy and FTIR studies. The invitro antioxidant study of samples treated at two different temperatures using DPPH assay provide the possibility of improving radical scavenging activity by varying the preparation conditions.