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Erschienen in: Journal of Nanoparticle Research 1/2018

01.01.2018 | Research Paper

Synthesis, photoelectrochemical properties and solar light-induced photocatalytic activity of bismuth ferrite nanoparticles

verfasst von: Sambhu Prasad Pattnaik, Arjun Behera, Satyabadi Martha, Rashmi Acharya, Kulamani Parida

Erschienen in: Journal of Nanoparticle Research | Ausgabe 1/2018

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Abstract

Bismuth ferrite (BFO) nanoparticles prepared by solid state reaction route were characterized by various characterization techniques such as XRD, FESEM, HRTEM, UV–Vis DRS, PL etc., and their photocatalytic activities were evaluated by decolorization of aqueous solution of Congo red (CR) under solar light. The photocatalytic activity of BFO was increased by increasing the preparation temperature from 350 to 500 °C and then decreased with rise in temperature. The results of electrochemical measurements such as linear sweep voltammetry (LSV), electrochemical impedence (EIS), and Mott–Schottky analysis of BFO nanoparticles corroborated the findings of their photocatalytic activity. The enhanced photocatalytic response of the sample prepared at 500 °C is attributed to its smallest band gap, minimum crystallite size (30 nm), efficient separation, and lowest possible recombination of photo-generated charge carriers. The effects of amount of nano-BFO, irradiation time, initial CR concentration, and BFO calcination temperature on the decolorization of CR were examined. It was observed that 1 g/L nano-BFO calcined at 500 °C can decolorize up to 77% a 10-ppm CR dye solution under solar irradiation for 60 min. The studies included scavenger tests for identification of reactive species and a possible mechanism of dye decolorization.

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Metadaten
Titel
Synthesis, photoelectrochemical properties and solar light-induced photocatalytic activity of bismuth ferrite nanoparticles
verfasst von
Sambhu Prasad Pattnaik
Arjun Behera
Satyabadi Martha
Rashmi Acharya
Kulamani Parida
Publikationsdatum
01.01.2018
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 1/2018
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-017-4110-5

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