Direct ink writing of cordierite ceramics with low thermal expansion coefficient

Chen, Zhe; Xu, Zhongkai; Cui, Fengdan; Zhang, Jian; Sun, Xiaohong; Shang, Yunpeng; Guo, Ruisong; Liu, Nan; Cai, Shu; Zheng, Chunming

doi:10.1016/j.jeurceramsoc.2021.12.017

Cited by 16 publications

(1 citation statement)

References 41 publications

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“…For example, alumina ceramics are prepared by synthesizing alumina powders by non-combustion methods, by reducing the sintering temperature, by ice template method, or by doping ceramic composites to reduce the sintering temperature of alumina ceramics [ 4 , 5 , 6 , 7 ]. Other methods include ball milling to refine powders [ 8 , 9 ], microwave and plasma sintering [ 10 ], 3-D printing [ 11 , 12 , 13 , 14 ], etc. These methods indicate a trend towards increasing energy efficiency in production.…”

Section: Introductionmentioning

confidence: 99%

MOF-Enhanced Aluminosilicate Ceramic Membranes Using Non-Firing Processes for Pesticide Filtration and Phytochrome Removal

Zhao,

Xu,

et al. 2024

Nanomaterials

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Aluminosilicates, abundant and crucial in both natural environments and industry, often involve uncontrollable chemical components when derived from minerals, making further chemical purification and reaction more complicated. This study utilizes pure alumina and fumed silica powders as more controllable sources, enhancing aluminosilicate reactivity through room temperature (non-firing) processing and providing a robust framework that resists mechanical stress and high temperature. By embedding iron-based metal–organic frameworks (Fe-MOF/non-firing aluminosilicate membranes) within the above matrix, these ceramic membranes not only preserve their mechanical robustness but also gain significant chemical functionality, enhancing their capacity to removing phytochromes from the vegetables. Sodium hydroxide and sodium silicate were selected as activators to successfully prepare high-strength, non-firing aluminosilicate membranes. These membranes demonstrated a flexural strength of 8.7 MPa under wet-culture conditions with a molar ratio of Al2O3:SiO2:NaOH:Na2SiO3 at 1:1:0.49:0.16. The chlorophyll adsorption of spinach conducted on these membranes showed a removal rate exceeding 90% at room temperature and pH = 9, highlighting its potential for the selective adsorption of chlorophyll. This study underscores the potential of MOF-enhanced aluminosilicate ceramic membranes in environmental applications, particularly for agricultural pollution control.

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