Magnetically separable and visible light-active Ag/NiCo2O4 nanorods prepared by a simple route for superior photodegradation of atrazine in water

Progress in Natural Science: Materials International

R.M. Mohamed¹  Maha Alhaddad²  Nasser S. Awwad³  Hala A. Ibrahium³  Ahmed Shawky⁴ 

[1] Corresponding author. Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8565, Japan.;Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8565, Japan;Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia;Nanomaterials and Nanotechnology Department, Advanced Materials Division, Central Metallurgical R&D Institute (CMRDI) P.O. Box 87 Helwan, 11421, Cairo, Egypt;

关键词: Spinel photocatalyst;    Visible light;    Photodegradation;    Atrazine;    Magnetic separation;   

DOI  :  

来源: DOAJ

【 摘 要 】

Atrazine (ATZ) is a known herbicide used in agriculture and caused many concerns according to its toxicity. Herein, we have prepared NiCo2O4 nanorods that can work as a photocatalyst under visible light exposure by Ag loading through a simple route. The characterizations revealed the role of Ag for improving the structural, optical and optoelectronic properties of the produced photocatalyst. The Ag loading with 5 wt% confirms the minimization of the bandgap from 3.6 down to 2.57 eV with enhanced visible light absorption and sustaining the magnetic properties. The Ag/NiCo2O4 nanorods showed a superior photodegradation of ATZ within 20 min at 2.0 g L–1 with excellent recyclability. The enhancement of the photocatalytic activity is referred to the local surface plasmon resonance of Ag-loaded photocatalyst. This reduces the electron-hole recombination and outperforms the unloaded sample. This work is highlighting the application of magnetically separable spinel photocatalysts for the removal of herbicides and water remediation.

【 授权许可】

Unknown