Preparation of novel ternary g-C 3 N 4 /WO 3 /ZnO nanocomposite adsorbent with highly effective imidacloprid removal: op
- PDF / 3,035,867 Bytes
- 18 Pages / 595.276 x 790.866 pts Page_size
- 92 Downloads / 178 Views
Preparation of novel ternary g-C3N4/WO3/ZnO nanocomposite adsorbent with highly effective imidacloprid removal: optimization design and a controllable systematic study Hadiseh Mirhosseini1, Ali Mostafavi1, Tayebeh Shamspur1,*
1 2
, and Ghasem Sargazi2
Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran Noncommunicable Diseases Research Center, Bam University of Medichal Science, Bam, Iran
Received: 1 June 2020
ABSTRACT
Accepted: 25 August 2020
In this study, a novel g-C3N4/WO3/ZnO nanocomposite was successfully synthesized from two-dimensional (2D) g-C3N4 and WO3 nanosheets and onedimensional (1D) ZnO nanorods. These nanostructures were characterized by the related analyses of field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, mapping, X-ray diffraction, and Fourier transform infrared spectroscopy. The obtained results further demonstrated the successful synthesis of the ternary heterostructure. The final productions were used as an effective adsorbent for imidacloprid pesticide removal from aqueous solution. Also, 2k-1 factorial design was applied to systematic study the effects of various experimental parameters such as the amount of adsorbent, imidacloprid concentration, contact time, and pH on the adsorption behaviors. According to the results obtained from the analysis of variance, these experimental parameters have significant effects on the imidacloprid adsorption efficiency. Also, response surface methodology was used to attain the best optimization procedure of imidacloprid adsorption. The results showed that g-C3N4/WO3/ZnO nanocomposite has a significant potential for imidacloprid removal with an efficiency of 99.9%. The appropriate kinetic model for imidacloprid adsorption on the g-C3N4/WO3/ZnO nanocomposite was pseudo-second-order kinetic models. Also, Freundlich isotherm was fitted for performing the adsorption process. The nanocomposite developed in this study and also the optimization procedure can be used as a novel strategy in the green future.
Springer Science+Business
Media, LLC, part of Springer Nature 2020
Address correspondence to E-mail: [email protected]; [email protected]
https://doi.org/10.1007/s10854-020-04343-1
J Mater Sci: Mater Electron
1 Introduction Industrial and agriculture development and general change in lifestyle lead to the extensive release of pollutants in surface and ground waters. The pesticides were constructed from chemical compounds and used to control pests [1, 2]. Imidacloprid, 1-((6chloro-3pyridinyl) methyl)-N-nitro-2imidazolidinimine (C9H10ClN5O2), is a chlorinated organic pesticide, which controls the insects via degradation of their nervous system [3, 4]. The reported imidacloprid solubility is 0.58 g L-1 in water, which can pollute the waters [5]. So, removal of these pollutants from waters will be necessary, because of their harmful influences on human health and aquatic ecosystems. There are many methods for eliminating pesticides from aqueous solutions, such as advanced oxi
Data Loading...
