Influence of cerium and iron substitution on the Bi2WO6 hierarchical microsphere and their enhanced photocatalytic degradation performance

被引：5

作者：

Balamurugan, K. S. ^{[1
]}

Pradhan, Chinmaya Kumar ^{[2
]}

Chitra, Subbiah Rammohan ^{[3
]}

Sangeetha, R. K. ^{[4
]}

机构：

[1] Karpaga Vinayaga Coll Engn & Technol, Dept Elect & Commun Engn, Chengalpattu 603308, Tamilnadu, India

[2] Vignans Lara Inst Technol & Sci, Dept Elect & Commun Engn, Guntur 522213, Andhra Pradesh, India

[3] P K N Arts & Sci Coll, Dept Phys, Madurai, Tamilnadu, India

[4] Sri Eshwar Coll Engn, Dept Phys, Coimbatore 641202, India

来源：

PHYSICA B-CONDENSED MATTER | 2024年 / 674卷

关键词：

Cerium; Iron; Bi2WO6; Photocatalysis; Rhodamine B; Thionine; DOPED BI2WO6; CRYSTAL-STRUCTURE; NANOSHEETS; COMPOSITES;

D O I：

10.1016/j.physb.2023.415572

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A facile hydrothermal approach was employed to synthesize cerium and iron co-doped Bi2WO6 photocatalysts, and their photocatalytic performance for the degradation of cationic rhodamine B (RhB) and thionine (TH) dyes under UV-visible light illumination was investigated. Powder XRD investigation revealed that the Ce and Fe ions significantly influenced the Bi2WO6 crystal structure, while HR-XPS confirmed the valence states of Ce and Fe ions in the Bi2WO6 lattice. The light absorption wavelength of the co-doped samples was red-shifted when compared to the pristine Bi2WO6. The photoluminescence spectroscopy results showed that the synergistic effect of the Ce-Fe intermediate state in the Ce-Fe co-doped Bi2WO6 photocatalyst significantly reduced the recombination of photoinduced electron-hole pairs and boosted photocatalytic degradation activity. Furthermore, the stability of the best-performed catalyst was verified using recycling tests. The degrading efficiency of TH and RhB was not significantly affected after five repeated cycles. A potential mechanism for increased photocatalytic activity was also discussed.

引用

页数：11

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