Preparation of ordered zirconia porous ceramics by polymer ceramic precursor method

Recently, Professor Qiu Wenfeng, a special researcher of the South China Institute of Soft Matter Science and Technology, published a paper entitled Preparation of ordered porous zirconia ceramics by polymer ceramic precursors in ACS Omega professional magazine as the first correspondent author.

The results show that porous ceramics have important applications in catalyst support, filtration, heat insulation, high temperature composite reinforcement and other fields. Traditional porous ceramics are mostly made of polyurethane as the template, filled with slurry made from ceramic powder, and then sintered. However, due to the limitation of slurry fluidity, it is impossible to immerse the polyurethane template with small pore size, and the pore size of porous ceramics is mostly in the millimeter level.

Fig. the process of preparing porous ceramics using bacterial cellulose as template by using polymer ceramic precursor as raw material

In this work, zirconia ceramic blocks with multi-stage porous structure were prepared by using bacterial cellulose and polymer ceramic precursors as raw materials, using the unique three-dimensional network structure of bacterial cellulose and the excellent processing and film-forming properties of polymer ceramic precursors. The porous ceramics have large specific surface area (10 m2/g), light density (0.13 g/cm3), rich porous structure (large pore size is about 1 micron, with both mesoporous and microporous structure), excellent thermal stability and moderate mechanical strength, and are used in catalyst support, filtration, heat insulation, high temperature composite reinforcement. It has broad application prospects in other fields.


Source from South China Advanced Institute for Soft Matter Science and Technology

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