Journal
CERAMICS INTERNATIONAL
Volume 48, Issue 21, Pages 32409-32417Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.07.184
Keywords
Water-glass-based nanosilica; Dendritic fibrous silica nanolayer; High porosity; Zinc oxide; Metal-organic framework
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government (Ministry of Science and ICT, MSICT) [NRF-2020R1A2C1004006]
- Nano-Convergence Foundation - Ministry of Science and ICT (MSIT, Korea)
- Ministry of Trade, Industry and Energy (MOTIE, Korea) [R202101100]
- National Research Foundation of Korea [R202101100] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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By optimizing the preparation and surface treatment of nanosilica, a silica-based nanostructure with dendritic fibrous silica nanolayer was constructed to enhance its porosity and surface area. This structure can serve as an efficient template for incorporating other active components, promoting the industrial use of eco-friendly materials.
Synthetic nanosilica derived from rice husk ash (RHA) is an eco-friendly and sustainable material that can replace silica sand and fumed silica. High surface area and large pore channels are required to extend the industrial applicability of nanosilica. To overcome the current limitations of water-glass-based synthetic nanosilica prepared from RHA (denoted as WNS), a silica-based nanoarchitecture composed of a dendritic fibrous silica nanolayer (DFSL) as the outer layer and WNS as the inner part (WNS@DFSL) was constructed. The preparation of RHA and WNS was investigated and optimized to improve the surface properties of WNS@DFSL. DFSL substantially enhances the porosity, surface area, and channel size of WNS. Moreover, the obtained WNS@DFSL can be used as an efficient template for incorporating other active components such as zeolitic imidazolate framework (ZIF-8) and ZnO. The current synthetic strategy can be used to construct hierarchical porous silica-based nanoarchitectures, thereby facilitating the industrial use of eco-friendly materials.
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