Fabrication of porous ceramics with double-pore structure by stepwise freeze casting using water/diphenyl methane emulsion
Source abstract
Abstract
Abstract Porous alumina with double-pore structure was fabricated by stepwise freeze casting using water/diphenyl methane (DPM) emulsion as freezing medium. The effects of DPM content in the alumina slurry on the pore structure, mechanical properties, and specific surface area of porous ceramics were investigated. The porosity of porous ceramics was not significantly affected by DPM content in the alumina slurry due to their same solid contents. The lamellar pore size decreased, and the spherical pore size increased in porous alumina with increasing DPM content in the slurry. Closed spherical pores were formed in lamellar pore walls when the DPM content was 10 vol%. The compressive strength slightly increased, and the specific surface area decreased in the samples with DPM compared with those in porous ceramics with pure water as freezing medium. The specific surface area of porous alumina was 0.566 m2/g, and the interception rate for titan yellow was 44.16% when the DPM content reached 25 vol% because the large spherical pore was connected to the outside. Hence, the fabricated porous alumina with DPM exhibited potential as adsorption and filtration materials.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aerogels and thermal insulation · Advanced ceramic materials synthesis · Recycling and utilization of industrial and municipal waste in materials production
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Modelling of the strength–porosity relationship in glass-ceramic foam scaffolds for bone repair10.1016/j.jeurceramsoc.2013.11.041 ↗
2. Slip-cast and hot-solution infiltrated porous yttria stabilized zirconia (YSZ) supported tubular fuel cells10.1016/j.jpowsour.2014.05.001 ↗
3. Porous YbB6 Ceramics prepared by in situ reaction between Yb2O3 and B4C combined with partial sintering10.1111/jace.13606 ↗
4. Experiment and modeling on the compressive behaviors for porous silicon nitride ceramics10.1016/j.msea.2012.08.081 ↗
5. Mechanical properties of porous ceramic scaffolds: influence of internal dimensions10.1016/j.ceramint.2015.03.044 ↗
6. Strength degradation of nonrandom porous ceramic structures under uniaxial compressive loading10.1111/j.1151-2916.2000.tb01624.x ↗
7. Freezing as a path to build complex composites10.1126/science.1120937 ↗
8. Fabrication of highly porous mullite microspheres via oil-drop molding accompanied by freeze casting10.1016/j.ceramint.2017.04.012 ↗
9. Two-step freeze casting fabrication of hydroxyapatite porous scaffolds with bionic bone graded structure10.1016/j.ceramint.2013.04.038 ↗
10. Porous Al2O3–ZrO2 composites fabricated by an ice template method10.1016/j.scriptamat.2009.12.018 ↗
11. A novel way to fabricate tubular porous mullite membrane supports by TBA-based freezing casting method10.1016/j.jeurceramsoc.2013.06.005 ↗
12. Fabrication of gradient porous β-SiAlON ceramics via a camphene-based freeze casting process10.1016/j.msea.2012.08.094 ↗
13. Freeze-casting of porous ceramics: a review of current achievements and issues10.1002/adem.200700270 ↗
14. Fully interconnected porous Al2O3 scaffolds prepared by a fast cooling freeze casting method10.1016/j.ceramint.2015.05.160 ↗
15. Thermal conductivity of ceramic/metal composites from preforms produced by freeze casting10.1016/j.ceramint.2016.06.016 ↗
16. Novel freeze casting fabrication for aligned lamellar porous alumina with centrosymmetric structure10.1016/j.jeurceramsoc.2014.05.040 ↗
17. Fabrication of lamellar porous alumina with axisymmetric structure by directional solidification with applied electric and magnetic fields10.1016/j.jeurceramsoc.2015.12.012 ↗
18. Architectural control of freeze-cast ceramics through additives and templating10.1111/j.1551-2916.2009.03087.x ↗
19. Freeze casting of aqueous alumina slurries with glycerol10.1111/j.1151-2916.2001.tb00860.x ↗
20. Manipulation of porous bioceramic microstructures by freezing of suspensions containing binary mixtures of solvents10.1111/j.1551-2916.2008.02795.x ↗
21. Freeze cast fabrication of porous ceramics using tert-butyl alcohol–water crystals as template10.1016/j.jeurceramsoc.2015.12.047 ↗
22. Physical and high-temperature permeation features of double-layered cellular filtering membranes prepared via freeze casting of emulsified powder suspensions10.1016/j.memsci.2011.08.003 ↗
23. Mesoscale assembly of chemically modified graphene into complex cellular networks10.1038/ncomms5328 ↗
24. Freeze gelcasting of naphthalene-in-aqueous alumina slurry emulsions for the preparation of macroporous alumina ceramics10.1016/j.ceramint.2014.09.083 ↗
25. Systematic tuning of pore morphologies and pore volumes in macroporous materials by freezing10.1039/b903461g ↗
26. The isoelectric points of sapphire crystals and alpha-alumina powder10.1016/S0927-7757(02)00366-7 ↗
27. Oxidation of ethyl benzene and diphenyl methane over ordered mesoporous M-MCM-41 (M = Ti, V, Cr): synthesis, characterization and structure–activity correlations10.1016/j.micromeso.2006.04.018 ↗
28. Effects of sodium dodecyl benzene sulfonate on the crystal structures and photocatalytic performance of ZnO powders prepared by hydrothermal method10.1016/j.jallcom.2015.07.109 ↗
29. Synthesis and characterization of high-strength ceramic composites in the system of potassium titanate – metallurgical slag10.1016/j.ceramint.2015.07.112 ↗
30. Partial coalescence in oil-in-water emulsions 1. Nature of the aggregation10.1016/0927-7757(93)80239-B ↗
31. Orthokinetic destabilization of emulsions by saturated and unsaturated monoglycerides10.1016/S0958-6946(01)00097-8 ↗
32. Polymer template fabrication of porous hydroxyapatite scaffolds with interconnected spherical pores10.1016/j.jeurceramsoc.2010.09.007 ↗