A green yttrium extraction system containing naphthenic acid, trioctyl/decylamine and isopropanol

Liu, Kui; Wang, Zengkai; Mei, Jing; Lu, B; Wu, Yao; Yang, Shenglong; Lin, Xi-Jie

doi:10.1016/j.jclepro.2023.137747

Cited by 6 publications

(1 citation statement)

References 32 publications

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“…They possess vacant 4f. orbitals that readily interact with functional groups, and their incorporation introduces more oxygen defects, effectively suppressing electron–hole recombination during transfer 5 , 6 . Moreover, rare earth doping increases impurity levels, leading to more efficient utilization of photo-induced carriers.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the impact of microwave-assisted techniques in the fabrication of yttrium-doped TiO2 photocatalyst

Kubiak,

Cegłowski

2024

Sci Rep

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In this study, we investigate the role of microwave technology in the fabrication of yttrium-doped TiO2 through a comparative analysis of hydrothermal techniques. Microwave-assisted hydrothermal synthesis offers advantages, but a comprehensive comparison between microwave-assisted and conventional methods is lacking. Therefore, in our investigation, we systematically evaluate and compare the morphological, structural, and optical properties of yttrium-doped TiO2 samples synthesized using both techniques. The X-ray diffraction (XRD) patterns confirm the anatase tetragonal structure of the synthesized TiO2-Y systems, while the larger ion radius of yttrium (Y3+) compared to titanium (Ti4+) presents challenges for yttrium to incorporate into the TiO2 lattice. The X-ray Photoelectron Spectroscopy (XPS) revealed a significant difference in the atomic content of yttrium between the TiO2-Y systems synthesized using microwave-assisted and conventional methods. This finding suggests that the rapid microwave method is more effective in successfully doping TiO2 with rare earth metals such as yttrium. The photo-oxidation of carbamazepine (CBZ) using TiO2-Y systems demonstrated high efficiency under UV-LED light. Microwave-synthesized TiO2-Y demonstrates improved photo-oxidation efficiency of CBZ, attributed to enhanced absorption, charge transfer, surface area, and crystallite size. Overall, the microwave-synthesized TiO2-Y systems showed promising performance for the photo-oxidation of CBZ, with improved efficiency compared to conventional synthesis methods.

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Section: Introductionmentioning

confidence: 99%