Study on magnetic, optical and photocatalytic activities of TbMnO3@CeO2 composite multiferroic materials

Synthesis and Photocatalytic Degradation of Water to Produce Hydrogen from Novel Cerium Dioxide and Silver-Doped Cerium Dioxide Fiber Membranes by the Electrospinning Method

“…As the one of the most abundant rare elements in nature, cerium has a unique 4f electronic structure which makes its compounds widely used in optical, electrical, and magnetic fields (Rajesh et al, 2020;Abd-Rabboh et al, 2021;Wang et al, 2021a;Wang et al, 2021b;Syed et al, 2021). Cerium dioxide is a promising semiconductor photocatalyst, because it has the properties of n-type semiconductors such as good light-resistant corrosivity and excellent storage and release of oxygen, and its unique Ce 3+ /Ce 4+ valence activity makes it highly oxidative and gives it a reducing ability (Mishra et al, 2018;Wen et al, 2018;Xing et al, 2020;Wang et al, 2021c;Wang et al, 2021d). Nano-cerium dioxide possesses more special properties and applications than cerium dioxide, so researchers have more stringent requirements about morphology, size, and others (Gao et al, 2018;Gong et al, 2019;Li et al, 2021).…”

“…Generally, the single component CeO 2 photocatalyst has a large band gap and is difficult to respond to visible light, which greatly limits its application in the field of photocatalytic decomposition of water to produce hydrogen (Li et al, 2021). Up to now, there are three methods to improve the photocatalytic activity of CeO 2 photocatalysts (Gao et al, 2018;Malyukin et al, 2018;Mohammadiyan et al, 2018;Wen et al, 2018;Xing et al, 2020;Wang et al, 2021d;Mikheeva et al, 2021): 1) using special preparation methods to synthesize CeO 2 photocatalysts with special defect structures, 2) combining other metal oxides with a small band gap value to construct special heterojunction structure composites to enhance their light response ability, and 3) a CeO 2 photocatalyst was modified by noble metal particles to enhance the charge transfer and migration ability of the system, thus improving the photocatalytic activity of CeO 2 . Noble metal particles-doped cerium dioxide is expected to show excellent physical and chemical properties (Mikheeva et al, 2021).…”