Next Article in Journal
Relative Contribution of Climate Change and Anthropogenic Activities to Streamflow Alterations in Illinois
Next Article in Special Issue
Comparative Study on Advanced Nitrogen Removal of Landfill Leachate Treated by SBR and SBBR
Previous Article in Journal
Gross Primary Production of Rainfed and Irrigated Potato (Solanum tuberosum L.) in the Colombian Andean Region Using Eddy Covariance Technique
Article

Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol

1
Institute of Environment and Ecology, Shandong Normal University, Jinan 250358, China
2
School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266525, China
3
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Shandong University, Jinan 250061, China
4
College of Geography and Environment, Shandong Normal University, Jinan 250358, China
*
Authors to whom correspondence should be addressed.
These authors are co-first authors on this work.
Academic Editors: Andreas N. Angelakis, Weihua Zhao, Kai Wang and Shanyun Wang
Water 2021, 13(22), 3224; https://doi.org/10.3390/w13223224
Received: 9 October 2021 / Revised: 21 October 2021 / Accepted: 9 November 2021 / Published: 13 November 2021
The photocatalytic degradation of organic pollutants is an effective method of controlling environmental pollution. ZnO nanoparticles (ZnO NPs) were prepared by the solvothermal method and characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV–visible diffuse reflectance spectroscopy (UV–Vis DRS). The results showed that the ZnO NPs had a uniform size of 25–40 nm, hexagonal wurtzite structure, and a band gap of 2.99 eV. The photocatalytic degradation of methyl orange (MO) and p-nitrophenol (PNP) was used as a model reaction to evaluate the photocatalytic activity of ZnO NPs. The photocatalytic degradation rates (pseudo-first-order kinetics) of MO and PNP were 92% (0.0128 min1) and 56.2% (0.0042 min1), respectively, with a 25 W ultraviolet lamp, MO/PNP concentration = 20 mg/L, ZnO NPs dose = 1.5 g/L, and time = 180 min. The photocatalytic mechanism of ZnO NPs and degradation pathways of MO and PNP were also proposed. The results provide valuable information and guidance for the treatment of wastewater via photocatalytic methods. View Full-Text
Keywords: ZnO; solvothermal; methyl orange; p-nitrophenol ZnO; solvothermal; methyl orange; p-nitrophenol
Show Figures

Figure 1

MDPI and ACS Style

Wang, Y.; Yang, C.; Liu, Y.; Fan, Y.; Dang, F.; Qiu, Y.; Zhou, H.; Wang, W.; Liu, Y. Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol. Water 2021, 13, 3224. https://doi.org/10.3390/w13223224

AMA Style

Wang Y, Yang C, Liu Y, Fan Y, Dang F, Qiu Y, Zhou H, Wang W, Liu Y. Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol. Water. 2021; 13(22):3224. https://doi.org/10.3390/w13223224

Chicago/Turabian Style

Wang, Ying, Chuanxi Yang, Yonglin Liu, Yuqi Fan, Feng Dang, Yang Qiu, Huimin Zhou, Weiliang Wang, and Yuzhen Liu. 2021. "Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol" Water 13, no. 22: 3224. https://doi.org/10.3390/w13223224

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop