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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Chem. | doi: 10.3389/fchem.2019.00091

Ag loading enhanced photocatalytic activity of g-C3N4 porous nanosheets for decomposition of organic pollutants

 Kezhen Qi1*,  Shu-yuan Liu2*, Kun Zheng3, Zhe Chen4 and Ruidan Wang1
  • 1Shenyang Normal University, China
  • 2Shenyang Medical College, China
  • 3AGH University of Science and Technology, Poland
  • 4School of Science, Jilin University of Chemical Technology, China

The g-C3N4 porous nanosheets with different loading amount of Ag nanoparticles (NPs) are successfully prepared by a simple liquid-phase reduction method. These Ag/g-C3N4 composites have an improved photocatalytic performance for decomposing organic pollutants compared with that of pure g-C3N4 nanosheets. Many measurements have been used for characterizing the samples, such as XRD, FTIR, UV-Vis DRS, PL, XPS, EDS, SEM, and TEM. In Ag/g-C3N4, the Ag NPs are uniformly coated on the g-C3N4 surface, the diameter is mainly in the range of 8~18 nanometers. Loading of Ag NPs expand the response to the visible light for g-C3N4 and increasing the producing rate of photogenerated e–-h+ pairs. The loading of silver NPs obviously enhances the photocatalytic activity of C3N4 nanosheets toward the Rhodamine B (RhB) decomposition under the simulated sunlight irradiation. With different loading amounts of Ag NPs, Ag/g-C3N4 (3wt% of Ag) showed the highest photocatalytic activity for RhB decomposition among these as-prepared samples, which is 10 times of the rate of pure C3N4. Based on the experimental results, a possible photocatalytic mechanism for Ag/g-C3N4 is proposed.

Keywords: Ag nanoparticles, Ag/g-C3N4, photocatalytic activity, organic pollutant, Ag nanoparticles, Ag nanoparticles (Ag NPs), G-C3N4, photocatalytic activity, Organic pollutant

Received: 31 Aug 2018; Accepted: 04 Feb 2019.

Edited by:

Bing LI, Institute of Materials Research and Engineering (A*STAR), Singapore

Reviewed by:

Wenbo Wang, Lanzhou Institute of Chemical Physics (CAS), China
Priyabrat Mohapatra, C. V. Raman College of Engineering, India  

Copyright: © 2019 Qi, Liu, Zheng, Chen and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Prof. Kezhen Qi, Shenyang Normal University, Shenyang, China, qkzh2003@aliyun.com
Dr. Shu-yuan Liu, Shenyang Medical College, Shenyang, 110034, Liaoning Province, China, liushuyuan@symc.edu.cn