Solar light-driven CeVO 4 /ZnO nanoheterojunction for the mineralization of Reactive Orange 4
- PDF / 2,888,891 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 35 Downloads / 150 Views
RESEARCH ARTICLE
Solar light-driven CeVO4/ZnO nanoheterojunction for the mineralization of Reactive Orange 4 Inbasekaran Muthuvel 1,2 & Kaliyamoorthy Gowthami 1 & Ganesamoorthy Thirunarayanan 1 & Balu Krishnakumar 3 & Meenakshisundaram Swaminathan 4 & Ravichandran Siranjeevi 5 Received: 16 May 2020 / Accepted: 27 July 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this study, we synthesized CeVO4/ZnO nanoheterojunction photocatalyst through hydrothermal-precipitation method. The prepared photocatalyst was characterized by Fourier transform infrared analysis (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) with elemental color mapping (ECM), high-resolution transmission electron microscopy (HR-TEM) with selected area electron diffraction (SAED) pattern, UV-vis diffuse reflection spectroscopy (UV-vis-DRS), BET, and photoluminescence (PL) spectroscopy. The BET surface area of CeVO4/ZnO is 10.50 m2/g. The photocatalytic activity of CeVO4/ZnO nanoheterojunction under solar light was investigated for the degradation of Reactive Orange 4 (RO 4). CeVO4/ZnO has been found to be more effective for mineralization of RO 4 than the prepared ZnO at neutral pH. The addition of TBA (•OH scavenger) contributes a significant decrease in the photodegradation efficiently of the catalyst. Chemical oxygen demand (COD) measurements confirmed the complete mineralization of RO 4. In addition, it found that the photocatalyst was stable and reusable. Keywords Photodegradation . CeVO4/ZnO . Wastewater treatment . Organic azo dye
Introduction In recent decades, research has focused on semiconductor nanomaterials because of their versatile properties and various applications (Maeda and Mallouk 2019; Khan et al. 2014; Ansari et al. 2014). Improper management of wastewater Responsible Editor: Santiago V. Luis * Inbasekaran Muthuvel [email protected] 1
Advanced Photocatalysis Laboratory, Department of Chemistry, Annamalai University, Annamalai Nagar, Tamil Nadu 608002, India
2
Photocatalysis Laboratory, Department of Chemistry, M.R. Govt. Arts College, Mannargudi, Tamil Nadu 614001, India
3
Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
4
Nanomaterials Laboratory, Department of Chemistry, Kalasalingam Academy of Research and Education, Krishnankoil, Tamil Nadu 626126, India
5
Department of Chemistry, SRM Institute of Science and Technology (SRMIST), Kattankulathur, Tamil Nadu 603203, India
has become a critical issue due to the large amount of wastewater that is generated from various sources. The textile industry is a major source of significant wastewater production. It creates huge quantities of highly colored dye effluents, which are typically poisonous and resistant to destruction by biological methods of treatment. Azo dyes are the most important type of organic synthetic dyes used for the textile industry, and therefore are industrial pollutants (Muthuvel et al. 2014), and also azo dyes constitute
Data Loading...
