Degradability of methylene orange synthetic dyes of multiferroic NiFe2O4–Ba0.8Sr0.2TiO3 composites
Source abstract
Abstract
Five samples of xNiFe2O4/(1 − x)Ba0.8Sr0.2TiO3 (where x = 0, 0.1, 0.2, 0.3, and 0.4) multiferroic nanocomposites have been successfully fabricated using ball milling combined with heat treatment in a short time. X-ray diffraction patterns indicated the coexistence of two phases, namely, NiFe2O4 (NFO) and Ba0.8Sr0.2TiO3 (BSTO). The average grain size obtained is about 50–100 nm, and NFO and BSTO phases are evenly distributed in the samples. With an increase in the content of NFO, the values characterizing the ferroelectric and ferromagnetic properties improve significantly. Furthermore, the bandgap energy (Eg) value was also strongly reduced. The results on the degradability of methylene orange show that the apparent first-order rate of composites containing NFO with x = 0.4 was found to be k = 0.0228 min−1, which is significantly higher than that of pure BSTO (k = 0.0166 min−1), suggesting that NFO/BSTO multiferroic nanocomposites could be considered as candidate photocatalysts for the degradation of pollutants.
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Research context
OpenAlex topics: Multiferroics and related materials · Dielectric properties of ceramics · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Materials Science, Vietnam Academy of Science and Technology 1 , 18-Hoang Quoc Viet, Hanoi, Vietnam
Hanoi University of Science, Vietnam National University 2 , 334-Nguyen Trai, Hanoi, Vietnam
School of Engineering Physics, Hanoi University of Science and Technology 3 , 01-Dai Co Viet, Hanoi, Vietnam
Center for Research and Technology Transfer, Vietnam Academy of Science and Technology 4 , 18-Hoang Quoc Viet, Hanoi, Vietnam
Funding
Vietnam Academy of Science and Technology
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