Photocatalytic degradation of methylene blue under visible light by cobalt ferrite nanoparticles/graphene quantum dots

被引：0

作者：

Anh V.C.N. ^{[1
,2
]}

Nhi L.T.T. ^{[3
,4
]}

Dung L.T.K. ^{[1
]}

Hoa D.T.N. ^{[1
]}

Son N.T. ^{[1
]}

Uyen N.T.T. ^{[2
]}

Thu N.N.U. ^{[2
]}

Son L.V.T. ^{[5
]}

Hieu L.T. ^{[2
]}

Tuyen T.N. ^{[2
]}

Khieu D.Q. ^{[2
]}

机构：

[1] University of Pharmacy and Medicine, Hue University

[2] University of Sciences, Hue University

[3] Center for Advanced Chemistry, Institute of Research & Development, Duy Tan University

[4] Faculty of Natural Sciences, Duy Tan University

[5] University of Education and Science, The University of Danang

来源：

Beilstein Journal of Nanotechnology | 2024年 / 15卷

关键词：

cobalt ferrite; graphene quantum dots; methylene blue;

D O I：

10.3762/BJNANO.15.43

中图分类号：

学科分类号：

摘要：

A simple approach was developed to synthesize cobalt ferrite nanoparticles/graphene quantum dots (CF/GQDs). The material was prepared from a homogeneous mixture of iron nitrate, cobalt nitrate, and starch at 140, 180 and 200 °C in a 24 h thermal hydrolysis process. The obtained materials were characterised by using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet–visible diffuse reflectance spectroscopy, Fourier-transform infrared spectroscopy, photoluminescence spectroscopy, vibrating-sample magnetometry, and nitrogen adsorption/desorption isotherms. Cobalt ferrite crystals of around 8–10 nm and graphene quantum dots formed directly at 200 °C. Stacking GQDs sheets onto the CF nanoparticles resulted in CF/GQDs nanoparticles. The nanocomposite exhibits satisfactory fluorescent and superparamagnetic properties, which are vital for catalytic applications. The CF/GQDs catalyse significantly the degradation of methylene blue (MB) under visible light. The catalyst can be recycled with an external magnetic field and displays suitable stability. Also, it was reused in three successive experiments with a loss of efficiency of about 5%. The CF/GQDs are considered as an efficient photocatalyst for MB degradation and other dyes. © 2024 Anh et al.; licensee Beilstein-Institut. License and terms: see end of document.

引用

页码：475 / 489

页数：14

共 40 条

[1]

Li Y., Hu Y., Zhao Y., Shi G., Deng L., Hou Y., Qu L., Adv. Mater. (Weinheim, Ger.), 23, pp. 776-780, (2011)

[2]

Dong Y., Shao J., Chen C., Li H., Wang R., Chi Y., Lin X., Chen G., Carbon, 50, pp. 4738-4743, (2012)

[3]

Li L., Wu G., Yang G., Peng J., Zhao J., Zhu J.-J., Nanoscale, 5, pp. 4015-4039, (2013)

[4]

Inah B. E., Eze J. F., Louis H., Edet H. O., Gber T. E., Eno E. A., Etim A. N., Adeyinka A. S., Chem. Phys. Impact, 7, (2023)

[5]

Revathy R., Sajini T., Augustine C., Joseph N., Results Eng, 18, (2023)

[6]

Gaikwad R. S., Chae S.-Y., Mane R. S., Han S.-H., Joo O.-S., Int. J. Electrochem, 2011, (2011)

[7]

Refat N. M., Nassar M. Y., Sadeek S. A., RSC Adv, 12, pp. 25081-25095, (2022)

[8]

Ansari S. M., Sinha B. B., Sen D., Sastry P. U., Kolekar Y. D., Ramana C. V., Nanomaterials, 12, (2022)

[9]

Jacinto M. J., Ferreira L. F., Silva V. C., J. Sol-Gel Sci. Technol, 96, pp. 1-14, (2020)

[10]

Ramachandran S., Sathishkumar M., Kothurkar N. K., Senthilkumar R., IOP Conf. Ser.: Mater. Sci. Eng, 310, (2018)

← 1 2 3 4 →