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Keyword:mayenite  electride  doping  macropores 
Year,volume(Issue):page number:2018,46(1):0-0

Cd-doped mayenite (Ca(12–x)CdxAl14O33) porous electrides were prepared by a phase separation-assisted sol-gel technology accompanied by vacuum reduction process. The effects of Cd doping amount on the microstructure, crystalline phase and electrical properties of mayenite electrides were investigated in detail. The results show that the as-prepared Cd-doped mayenite possesses a co-continuous macrostructure with the dense skeletons and the porosity as high as 66%. After heat treatment at 1100 ℃, the Cd element doping does not destroy the “cage” structure of mayenite, while replaces a certain amount of more active calcium ions in the mayenite, making the structure more stable. The Cd-doped mayenite could transform from the insulator into a certain conductivity of the electride material after reduced at 900 ℃ under vacuum environment, whose electron concentration is up to 6.904×1013 cm–3.

Foundation item:
About The Author:
王 睿(1991—),男,博士研究生。

DYE J L. Chemistry. Electrons as anions[J]. Science, 2003, 301(5633): 607–8.

[2] DYE J L. Electrides: ionic salts with electrons as the anions[J]. Science, 1990, 247(4943): 663–8.

[3] EISBERG R, RESNICK R, SULLIVAN J D. Quantum physics of atoms, molecules, solids, nuclei and particles[J]. Phys Today, 1974, 39(3): 110–111.

[4] AND J L D, DEBACKER M G. Physical and chemical properties of alkalides and electrides[J]. Annual Rev Phys Chem, 1987, 38(1): 271–299.

[5] WAGNER M J, DYE J L. Alkalides, electrides and expanded metals[J]. Annual Rev Mater Res, 2003, 23(1): 223–253

[6] DYE J L. Electrides:  From 1D heisenberg chains to 2D pseudo-metals[J]. Inorgan Chem, 1997, 36(18): 3816–3826.

[7] MATSUISHI S, TODA Y, MIYAKAWA M, et al. High‐density electron anions in a nanoporous single crystal: [Ca24Al28O64]4+(4e–)[J]. Science, 2003, 301(5633): 626–9.

[8] TOLKACHEVA A S, SHKERIN S N, KORZUN I V, et al. Phase transition in mayenite Ca12Al14O33[J]. Russ J Inorgan Chem, 2012, 57(7): 1014–1018. 

[9] TOLKACHEVA A S, SHKERIN S N, KORZUN I V, et al. Phase transition in mayenite Ca12Al14O33[J]. Russ J Inorgan Chem, 2012, 57(7): 1014–1018. 

[10] CHRISTENSEN A N, SANDSTRÖM M, MAARTMANN-MOE K, et al. Neutron powder diffraction profile refinement studies on 

Ca11.3Al14O32.3 and CaClO(D0.88H0.12)[J]. Acta Chem Scand, 1987: 110–112.

[11] KIM S, MIYAKAWA M, HAYASHI K, et al. Simple and efficient fabrication of room temperature stable electride: melt-solidification and glass ceramics[J]. J Am Chem Soc, 2005, 127(5): 1370.

[12] KIM S W, MATSUISHI S, MIYAKAWA M, et al. Fabrication of room temperature-stable 12CaO·7Al2O3, electride: a review[J]. J Mater Sci Mater Electron, 2007, 18(1): 5–14.

[13] KIM S W, TODA Y, HAYASHI K, et al. Synthesis of a room temperature stable 12CaO·7Al2O3 Electride from the Melt and Its Application as an Electron Field Emitter[M]. Chem Mater, 2006, 18(7): 1938–1944.

[14] MATSUISHI S, NOMURA T, HIRANO M, et al. Direct synthesis of powdery inorganic electride [Ca24Al28O64]4+(e−)4 and determination of oxygen stoichiometry[J].  Chem Mater, 2009, 21(13): 2589–2591.

[15] GUO X, CAI X, SONG J, et al. Facile synthesis of monolithic mayenite with well-defined macropores via an epoxide-mediated sol-gel process accompanied by phase separation[J]. New J Chem, 2014, 38(12): 5832–5839.

[16] 郭兴忠, 蔡晓波, 宋杰, 等. 大孔钙铝石块体材料的制备及表征[J]. 无机材料学报, 2015, 30(2): 141–146.

GUO Xing-Zhong, CAI Xiao-Bo, SONG Jie, et al. J Inorgan Mater (in Chinese), 30(2): 141–146.


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