Fabrication of highly stable CdS/g-C3N4 composite for enhanced photocatalytic degradation of RhB and reduction of CO2

  • Xin Li
  • Miroslava Edelmannová
  • Pengwei HuoEmail author
  • Kamila KočíEmail author
Chemical routes to materials


CdS/g-C3N4 (CdS/CN) type II heterojunction photocatalyst was prepared by an improved successive ionic layer adsorption and reaction process. TEM results show that the CdS nanoparticles (CdS NPs) were successfully loaded on the surface of CN. The results of PL and PEC display that the construction of CdS/CN heterojunction benefits the transmission of the photogenerated carriers and effectively inhibits the photogenerated carrier recombination in photocatalytic process. The photodegradation experiments exhibit that the 3-CdS/CN photocatalyst possesses the highest photodegradation performance over the other samples. The yields of H2 and CH4, in the presence of the best CdS/CN photocatalyst (1-CdS/CN) are 50 and 13 times stronger, respectively, than in the case of the pure CN in the photoreduction process of CO2. The CN coupling effectively improves the photocatalytic performance of CdS-based photocatalyst and inhibits the hole-induced photocorrosion of CdS NPs. A possible type II heterojunction photocatalytic mechanism has been provided.



The work was supported from the National Natural Science Foundation of China (Grant No. 21776117), ERDF “Institute of Environmental Technology—Excellent Research” (No. CZ.02.1.01/0.0/0.0/16_019/0000853) and by using Large Research Infrastructure ENREGAT supported by the Ministry of Education, Youth and Sports of the Czech Republic under Project No. LM2018098.

Supplementary material

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Supplementary material 1 (DOCX 542 kb)


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Authors and Affiliations

  1. 1.School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiangChina
  2. 2.Institute of Environmental TechnologyVŠB-Technical University of OstravaOstrava-PorubaCzech Republic
  3. 3.Faculty of Materials Science and TechnologyVŠB-Technical University of OstravaOstrava-PorubaCzech Republic

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