A multidentate polymer microreactor route for green mass fabrication of mesoporous NaYF<sub>4</sub> clusters

Li, Yameng; Zhang, Xiaozeng; Zhang, Chao; Gan, Minglong; Liao, Jinsheng; Ye, Xinyu; You, Wei-Xiong; Fu, Junxiang; Wen, He‐Rui

doi:10.1039/d1cc06255g

Cited by 1 publication

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“…Figure 1g shows the N 2 adsorption-desorption isotherms of undoped, 5%Yb-doped, 25%N/5%Yb-doped, and 30%N/5%Yb-doped CeO 2 . All isotherms were consistent with type IV hysteresis loops, confirming their mesoporous structure [21]. The specific surface area (m 2 /g) was an objective, reliable, and physically meaningful size metric for porous materials, and the well-known Brunauer-Emmett-Teller (BET) equation was usually used to determine the specific surface area from the physical adsorption of a gas on a solid surface (labeled as S BET ) [22].…”

Section: Resultsmentioning

confidence: 66%

Novel Mesoporous and Multilayered Yb/N-Co-Doped CeO2 with Enhanced Oxygen Storage Capacity

Xu,

Gao,

et al. 2023

Materials

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A cubic fluorite-type CeO2 with mesoporous multilayered morphology was synthesized by the solvothermal method followed by calcination in air, and its oxygen storage capacity (OSC) was quantified by the amount of O2 consumption per gram of CeO2 based on hydrogen temperature programmed reduction (H2–TPR) measurements. Doping CeO2 with ytterbium (Yb) and nitrogen (N) ions proved to be an effective route to improving its OSC in this work. The OSC of undoped CeO2 was 0.115 mmol O2/g and reached as high as 0.222 mmol O2/g upon the addition of 5 mol.% Yb(NO3)3∙5H2O, further enhanced to 0.274 mmol O2/g with the introduction of 20 mol.% triethanolamine. Both the introductions of Yb cations and N anions into the CeO2 lattice were conducive to the formation of more non-stoichiometric oxygen vacancy (VO) defects and reducible–reoxidizable Cen+ ions. To determine the structure performance relationships, the partial least squares method was employed to construct two linear functions for the doping level vs. lattice parameter and [VO] vs. OSC/SBET.

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Section: Resultsmentioning

confidence: 66%

Novel Mesoporous and Multilayered Yb/N-Co-Doped CeO2 with Enhanced Oxygen Storage Capacity

Xu,

Gao,

et al. 2023

Materials

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A multidentate polymer microreactor route for green mass fabrication of mesoporous NaYF₄ clusters

Abstract: We report a ‘‘multidentate polymer microreactor’’ method for the creation of secondary structures of colloidal nanocrystals. Using NaYF4: Yb, Er as an example, we demonstrate that the use of sodium...

Cited by 1 publication

References 24 publications

Novel Mesoporous and Multilayered Yb/N-Co-Doped CeO2 with Enhanced Oxygen Storage Capacity

Novel Mesoporous and Multilayered Yb/N-Co-Doped CeO2 with Enhanced Oxygen Storage Capacity

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A multidentate polymer microreactor route for green mass fabrication of mesoporous NaYF4 clusters

Abstract: We report a ‘‘multidentate polymer microreactor’’ method for the creation of secondary structures of colloidal nanocrystals. Using NaYF4: Yb, Er as an example, we demonstrate that the use of sodium...

Cited by 1 publication

References 24 publications

Novel Mesoporous and Multilayered Yb/N-Co-Doped CeO2 with Enhanced Oxygen Storage Capacity

Novel Mesoporous and Multilayered Yb/N-Co-Doped CeO2 with Enhanced Oxygen Storage Capacity

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A multidentate polymer microreactor route for green mass fabrication of mesoporous NaYF₄ clusters