Two-Dimensional Porous SiO2 Nanostructures Derived from Renewable Petal Cells with Enhanced Adsorption Efficiency for Removal of Hazardous Dye
| Autor: | Nan Xu, Junchao Qian, Xing Zhou, Chengbao Liu, Yuanyuan Zhu, Feng Chen, Lin Yan, Ruyu Cui, Zhengying Wu, Zhigang Chen |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanostructure Renewable Energy Sustainability and the Environment General Chemical Engineering Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Nanomaterials Tetraethyl orthosilicate chemistry.chemical_compound Adsorption chemistry Environmental Chemistry 0210 nano-technology Mesoporous material Porosity BET theory |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:3478-3487 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.7b00170 |
| Popis: | Diverse microstructures and morphologies from plant cells inspire us with great opportunities for creating novel nanomaterials. In this work, a biomorphic mesoporous SiO2 with unique two-dimensional (2D) nanostructure was feasibly fabricated by employing renewable petal cells as bioscaffolds. During the structure formation, the hydrolyzed siliceous species initially adhere to and then penetrated the cell walls, forming the composite of siliceous species/cells. This is followed by shrinkage and deformation of the cell skeleton in a subsequent drying process. Then, the special 2D SiO2 with abundant internal mesopores was acquired after careful removal of the cells. The concentration of siliceous source (tetraethyl orthosilicate, TEOS) in the impregnation/infiltration steps is a key factor for the replication of the biological morphology for SiO2. The sample prepared with CTEOS of 0.05 mol L–1 can duplicate well the biomorphology of petal cells, which has a BET surface area of 177 m2 g–1 and pore size rangin... |
| Databáze: | OpenAIRE |
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