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SCIENCE CHINA Technological Sciences, Volume 62 , Issue 12 : 2236-2242(2019) https://doi.org/10.1007/s11431-019-9560-7

Preparation of superhydrophobic CdS cotton using visible light response and its application for the control of water pollution

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  • ReceivedApr 28, 2019
  • AcceptedJul 18, 2019
  • PublishedOct 17, 2019

Abstract

Sewage discharge produced by homes and industries contains both oil and water-soluble components. In order to remove oil from water, materials with specific wettability can be used; however, these materials cannot remove dissolved contaminants from water. In this research, we prepared a superhydrophobic CdS cotton for water purification. This material has the ability to adsorb different types of oil due to its non-wettability (WCA = 152°). Moreover, its response behavior towards visible light enables it to remove water-soluble pollutants as well. The highest oil absorption rate of superhydrophobic CdS cotton is nearly 30 times, and it can absorb light below 564 nm and produce •OH to degrade water soluble pollutants. Finally, based on Mott-Schottky curve, the position of Fermi energy level was determined (–0.55 eV). Also, the positions of valence and conduction bands were calculated based on the analysis of band gap which helps in proving photoelectric response characteristics.


Funded by

This wrok was supported by the Foundation of Shandong Training Project(Grant,No.,ZR2018PB014)

Ph.D. Programs of Shandong Province(Grant,No.,ZR2014EL009)

and the PhD early development program of Liaocheng University(Grant,No.,318051648)


Acknowledgment

This wrok was supported by the Foundation of Shandong Training Project (Grant No. ZR2018PB014), Ph.D. Programs of Shandong Province (Grant No. ZR2014EL009), and the Ph.D. early development program of Liaocheng University (Grant No. 318051648).


Supplement

Supporting Information

The supporting information is available online at tech.scichina.com and link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.


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