Photocatalytic degradation of Rhodamine B, a carcinogenic pollutant, by MgO nanoparticles

被引:18
作者
Kuruthukulangara, Nethra [1 ]
Asharani, I. V. [1 ]
机构
[1] Vellore Inst Technol, Sch Adv Sci, Dept Chem, Vellore 632014, Tamil Nadu, India
关键词
MgO nanoparticle; Photocatalyst; Rhodamine B dye; Dye degradation; Saraca asoca (Roxb.); GRAPHITIC CARBON NITRIDE; ASSISTED GREEN SYNTHESIS; METHYLENE-BLUE; OXIDE NANOPARTICLES; DYES; PHOTODEGRADATION; EXTRACT; ANTIBACTERIAL; ADSORPTION; HENNA;
D O I
10.1016/j.inoche.2023.111873
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In this study, stable magnesium oxide nanoparticles (MgO NPs) are created using a one-pot process. As a capping and reducing agent, Saraca asoca (Roxb.) leaf extract is used. Multiple methods were used to characterise the photocatalyst, including UV-DRS, FT -IR, XRD, TGA, FE -SEM, EDAX, TEM, Zeta potential, BET, and XPS. The synthesized MgO NPs were found to be face-centered cubic. DRS-UV analysis determined that the optical band gap of MgO nanoparticles was 4.71eV. TEM analysis found that the shapes of the MgO NPs were a mix of nanorods and spheres. The XPS method was applied to determine the oxidation state of the MgO NPs. Rhodamine B dye was degraded by MgO nanoparticles with strong photocatalytic activity when it was exposed to UV light and achieved 95 % degradation. The experimental results were consistent with first-order kinetics. This study demonstrates that MgO NPs can be effectively applied in industries like wastewater treatment. They exhibit positive impacts on adsorption and photocatalysis, possess a rapid degradation rate, are readily studied kinetically, and can be utilized in minimal quantities.
引用
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页数:16
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