A vacuum calcination route to high-surface-area MgO nanoplates for superior arsenate adsorption and catalytic properties
| Autor: | Zhang Junping, Lan Xiang, Cheng Yang, Jing Wang, Meigui Yi, Ruosong Chen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Coalescence (physics)
Materials science Arsenate chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films law.invention Catalysis chemistry.chemical_compound Adsorption chemistry Chemical engineering law Phase (matter) Calcination 0210 nano-technology Porosity Instrumentation Arsenic |
| Zdroj: | Vacuum. 158:231-235 |
| ISSN: | 0042-207X |
| Popis: | Porous MgO nanoplates with high surface area has been synthesized by a vacuum calcination route using industrially available Mg(OH)2 as the precursor. The vacuum calcination not only promoted the phase transformation of Mg(OH)2 to MgO at a low temperature (300 °C), but also inhibited the thermally-induced particle growth and pore coalescence, leading to the formation of MgO nanoplates with fine grain sizes (5.5 nm), ultrasmall pores (2–4 nm) and high surface area (390 m2 g−1). The as prepared MgO nanoplates exhibited superior arsenic adsorption properties with a maximum adsorption capacity of 481.0 mg g−1, as well as excellent catalytic activity for the Claisen-Schmidt condensation reaction. |
| Databáze: | OpenAIRE |
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