“O-S” charge transfer mechanism on electron-extracting system: Interface engineered Ag-r-GO-CuFe2O4-Fe3O4 heterojunction an efficient photocatalyst for water treatment and toxicity study in Trifolium plants

مقال فى مجلة

2024

تم النشر فى: https://doi.org/10.1016/j.jiec.2024.01.046

https://doi.org/10.1016/j.jiec.2024.01.046

Herein, we report the Ohmic and Schottky junction (O-S scheme) Ag-r-GO-CuFe2O4-Fe3O4 nanocomposite (Ag-r-
GO-CFO-FO NCs) for effective photocatalytic activity against organic pollutants. Herein the O-S scheme mechanism
is achieved by the formation of Ohmic and Schottky junctions. The two interfacial charge carriers for accelerated
phono formation and mass transfer and thus increase in the light-harvesting with electron traps for the
gerenation of reactive oxygen species (ROS). The photocatalytic activity of the constructed Ag-r-GO-CFO-FO NCs
was tested against organic dyes (red RB, orange 2R and black B) and the degradation efficiency was calculated to
be 99.8, 99.3 and 99.8% respectively. The radical quenching shows the formation of •OH and O2•- which plays
major role in the mineralization of organic pollutants. Total organic carbon (TOC) after the degradation of red
RB, orange 2R and black B by Ag-r-GO-CFO-FO NCs was 2.1%, 1.6% and 1.9% respectively, which shows the
complete mineralization of the pollutants. In addition, the real-time application of the photocatalytic efficiency
of NCs was performed against the effluent collected from dying industrial (which is a combination of red RB, orange
2R and black B) and the degradation efficiency was 98.2%. Toxicity of the NCs was performed against
maize plants, the results show that the NCs are non-toxicity towards plants and can be used for real-time application.
The efforts provide evidence of the combination of two interfacial charge carriers (O-S scheme) to boost the
catalytic activity of the catalyst for water treatment.

• مجلة/صحيفة: Journal of Industrial and Engineering Chemistry