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Influence of P doping on the properties of g-C3N4/La2Ce2O7 photocatalyst in degrading organic pollutants.

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Název: Influence of P doping on the properties of g-C3N4/La2Ce2O7 photocatalyst in degrading organic pollutants.
Autoři: Yu, Fucheng1,2,3 (AUTHOR) yufc72@163.com, Chen, Jianru1 (AUTHOR), Liang, Dong1 (AUTHOR), Jiang, Ruobing1 (AUTHOR), Duan, Xuying1 (AUTHOR), Yu, Xihao1 (AUTHOR), Liu, Lina1 (AUTHOR), Feng, Chenchen1 (AUTHOR), Li, Cuixia1 (AUTHOR), Hu, Kechao4 (AUTHOR), Hou, Xiaogang5 (AUTHOR)
Zdroj: Ceramics International. Nov2025:Part A, Vol. 51 Issue 28, p57156-57168. 13p.
Témata: *PHOTOCATALYSTS, *ORGANIC water pollutants, *ELECTRON mobility, *SURFACE structure, *CYANIDES, *CHEMICAL decomposition, *LANTHANUM oxide, *PHOSPHORUS
Abstrakt: The precise quantities of melamine and cyanuric acid were subjected to a ball milling process, with the objective of forming supramolecule precursors. Following the calcination of the precursors, g-C 3 N 4 nanoflakes were obtained. Subsequently, a g-C 3 N 4 /La 2 Ce 2 O 7 composite photocatalyst was then yielded by growing La 2 Ce 2 O 7 nanoparticles on the surface of g-C 3 N 4 nanoflakes via the co-deposition method. The composite with the Type-II carrier transfer mechanism (CTM) exhibited a photocatalytic capacity on the degradation of tetracyclines (TC) and ciprofloxacin (CIP) solutions. Moreover, the investigation into the influence of La 2 Ce 2 O 7 mass percentage on the photocatalytic performance of the g-C 3 N 4 /La 2 Ce 2 O 7 composite revealed that a 15 % La 2 Ce 2 O 7 mass percentage sample yielded the optimum photocatalytic performance. Consequently, within a 30-min timeframe, the degradation efficiencies of TC and CIP solutions were 72.085 % and 46.214 %, respectively, under the photocatalytic action of the sample. Furthermore, with the introduction of the donor dopant of P element, the Fermi level of the g-C 3 N 4 component was elevated, resulting in a shift of the CTM of the composite to the S-scheme. Consequently, the photocatalytic performance of the composite was further enhanced. It is evident that the doped sample exhibited much improved photocatalytic activity, which resulted in enhanced degradation efficiencies of 92.894 % and 73.809 % for these two solutions, respectively. [Display omitted] • A novel composite photocatalyst, g-C 3 N 4 /La 2 Ce 2 O 7 , has been developed. • The Fermi level of the g-C 3 N 4 component was elevated by the P element doping. • The carrier transfer mechanism in the composite was shifted from the Type-II to the S-scheme via the P element doping. • The photocatalytic degradation rate for TC and CIP solution was found to be 72.085% and 46.214%, respectively. • The doping of P element resulted in degradation rates of 92.894% and 73.809% for these two solutions, respectively. [ABSTRACT FROM AUTHOR]
Databáze: Academic Search Index
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Abstrakt:The precise quantities of melamine and cyanuric acid were subjected to a ball milling process, with the objective of forming supramolecule precursors. Following the calcination of the precursors, g-C 3 N 4 nanoflakes were obtained. Subsequently, a g-C 3 N 4 /La 2 Ce 2 O 7 composite photocatalyst was then yielded by growing La 2 Ce 2 O 7 nanoparticles on the surface of g-C 3 N 4 nanoflakes via the co-deposition method. The composite with the Type-II carrier transfer mechanism (CTM) exhibited a photocatalytic capacity on the degradation of tetracyclines (TC) and ciprofloxacin (CIP) solutions. Moreover, the investigation into the influence of La 2 Ce 2 O 7 mass percentage on the photocatalytic performance of the g-C 3 N 4 /La 2 Ce 2 O 7 composite revealed that a 15 % La 2 Ce 2 O 7 mass percentage sample yielded the optimum photocatalytic performance. Consequently, within a 30-min timeframe, the degradation efficiencies of TC and CIP solutions were 72.085 % and 46.214 %, respectively, under the photocatalytic action of the sample. Furthermore, with the introduction of the donor dopant of P element, the Fermi level of the g-C 3 N 4 component was elevated, resulting in a shift of the CTM of the composite to the S-scheme. Consequently, the photocatalytic performance of the composite was further enhanced. It is evident that the doped sample exhibited much improved photocatalytic activity, which resulted in enhanced degradation efficiencies of 92.894 % and 73.809 % for these two solutions, respectively. [Display omitted] • A novel composite photocatalyst, g-C 3 N 4 /La 2 Ce 2 O 7 , has been developed. • The Fermi level of the g-C 3 N 4 component was elevated by the P element doping. • The carrier transfer mechanism in the composite was shifted from the Type-II to the S-scheme via the P element doping. • The photocatalytic degradation rate for TC and CIP solution was found to be 72.085% and 46.214%, respectively. • The doping of P element resulted in degradation rates of 92.894% and 73.809% for these two solutions, respectively. [ABSTRACT FROM AUTHOR]
ISSN:02728842
DOI:10.1016/j.ceramint.2025.09.369