期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 125, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2020.105651
关键词
Photocatalysis; g-C3N4 nanosheet/Ag3BiO3; Visible light; Organic contaminants; Z-Scheme
类别
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2016-04221]
- McCain Foundation through the McCain Foundation Postdoctoral Fellowship in Innovation program
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2020M2D8A206983011]
- Basic Science Research Program through the National Research Foundation of Korea [2017R1A2B3009135]
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [104.05-2020.15]
Photocatalytic degradation using g-C3N4 nanosheet/Ag3BiO3 systems was effective in eliminating various organic pollutants in effluent, demonstrating synergy between the two semiconductors for enhanced efficiency. The study highlighted the importance of efficient charge transfer and absorption of visible light for improved photocatalytic activity.
Photocatalytic degradation was selected as an advanced and novel method for the degradation of dangerous organic contaminants from effluent. In this research work, the binary g-C3N4 nanosheet/Ag3BiO3 systems were constructed entirely through a simple approach and utilized to evaluate the elimination efficiency of various organic pollutants under visible light excitation for the first time. Physicochemical characterizations demonstrated that Ag3BiO3 nanoparticles deposited on the of g-C3N4 nanosheet. The Ka, values of g-C3N4 nanosheet/Ag3BiO3 (20%) for RhB, MG, MO and phenol were 52.5, 49.1, 49.0, and 32.7 times compared with that of single g-C3N4, respectively. The ultimate photoactivity and durability could be related to synergetic effects containing (1) highly impressive transfer and separation system of photo-generated charges from g-C3N4 nanosheet to Ag3BiO3; (2) boosted photoability was related to the increased absorption of visible irradiation due to the presence of small optical gap semiconductors. The active species discovering tests revealed that the center dot OH, h(+) and center dot O-2(-) played important roles in RhB elimination. Finally, a conceivable z-scheme mechanism for photocatalytic activity of g-C3N4 nanosheet increased with Ag3BiO3 was offered according to the detailed analysis. This research paper presents an effective and alternative method for the elimination of organic pollutants in the effluent.
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