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- Title
Synthesis of Phosphotungstic Acid/S-doped g-C<sub>3</sub>N<sub>4</sub> Photocatalyst and Its Photocatalytic Degradation of Organic Pollutants in Aqueous Solutions.
- Authors
Pengxi LI; Zhonghong LIU; Bing YANG; Zhiyong JIANG; Jingjing YANG
- Abstract
The S-doped g-C3N4 (SCN) was prepared by thermal condensation method using thiourea as a precursor, and then the phosphotungstic acid (PTA)/SCN composite photocatalytic material was prepared by reflux adsorption method. The photocatalytic degradation experiments of Rhodamine B showed that SCN20 had the highest photocatalytic degradation rate (74 %), which was 1.9 times and 3.5 times higher than that of PTA (39 %) and SCN (21 %), respectively. The photocatalytic degradation rate of SCN20 was increased by 5 times compared to that of SCN, indicating that the photocatalytic degradation performance of the composite material was significantly improved. The photocatalytic degradation mechanism study revealed that O2 - was the main active species in the photocatalytic degradation of Rhodamine B, and the addition of PTA helped the effective separation of electrons-hole and improved the photocatalytic degradation rate. Our PTA/SCN is proposed as an environmental safety tool due to several advantages, such as low cost, convenient preparation, and efficient photocatalytic degradation of Rhodamine B.
- Subjects
PHOTODEGRADATION; AQUEOUS solutions; POLLUTANTS; RHODAMINE B; PHOSPHOTUNGSTIC acids; PHOTOCATALYSTS
- Publication
Materials Science / Medziagotyra, 2023, Vol 29, Issue 2, p135
- ISSN
1392-1320
- Publication type
Article
- DOI
10.5755/j02.ms.31053