Details

Autor(en) / Beteiligte

• Zhang, Xinyang
• Chen, Zhaofeng
• Zhang, Junxiong
• Ye, Xinli
• Cui, Sheng

Titel

Hydrophobic silica aerogels prepared by microwave irradiation

Ist Teil von

• Chemical physics letters, 2021-01, Vol.762, p.138127, Article 138127

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •The superhydrophobic silica aerogels are prepared by microwave irradiation.•The silica obtained at the TEOS/EtOH molar ratio of 8 offers an essential property of microstructure and the surface area.•Significant improvement in the hydrophobic properties of the aerogels could be obtained by the MTES/TEOS co-precursor, in which the optical hydrophobic property could be obtained at the M of 0.8 and E of 8.•The water contact angle of the obtained aerogel is up to 168°. Silica aerogels were synthesized by using tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) as co-precursors via the sol–gel method under the microwave irradiation condition. The optimal molar ratio of MTES:TEOS: EtOH: H2O is 0.8:1:8:4, and the obtained aerogels showed the bulk density is 0.097 g/cm3, the surface area is 760.56 m2/g, and pore diameter is 6.06 nm, respectively. The microstructure on the skeleton of the bone networks was investigated by TEM, and the FTIR confirmed that the OH groups were substituted by the CH3 groups prepared by MTES/TEOS co-precursor, the superhydrophobic property was described with a water contact angle up to 168.0°.