Zhu Xiurong, Zhou Bin, Du Ai, et al. Influence of solvents on properties of monolithic La-based aerogels[J]. High Power Laser and Particle Beams, 2015, 27: 112011. doi: 10.11884/HPLPB201527.112011
Citation:
Zhu Xiurong, Zhou Bin, Du Ai, et al. Influence of solvents on properties of monolithic La-based aerogels[J]. High Power Laser and Particle Beams, 2015, 27: 112011. doi: 10.11884/HPLPB201527.112011
Zhu Xiurong, Zhou Bin, Du Ai, et al. Influence of solvents on properties of monolithic La-based aerogels[J]. High Power Laser and Particle Beams, 2015, 27: 112011. doi: 10.11884/HPLPB201527.112011
Citation:
Zhu Xiurong, Zhou Bin, Du Ai, et al. Influence of solvents on properties of monolithic La-based aerogels[J]. High Power Laser and Particle Beams, 2015, 27: 112011. doi: 10.11884/HPLPB201527.112011
La-based aerogels were synthesized by using LaCl37H2O as precursor, methanol and ethanol as solvents, via sol-gel process. The microstructure, components, specific surface area, pore diameter distribution and mechanical properties were characterized by scanning electron microscopy, Fourier transform infrared spectrometer, adsorption/desorption analysis and mechanical property tester, respectively. The results reveals that La-based aerogels derived from methanol and ethanol have a three-dimension network that consists of interconnected bead-like particles with diameters varying from several tens to hundreds nanometer. Comparing to the aerogel (specific surface area: 95 m2g-1, density: about 350 mgcm-3) derived from methanol, the aerogel (specific surface area: 220 m2g-1, density: about 160 mgcm-3) derived from ethanol possesses better pore morphology and worse mechanical property. The properties of the La-based aerogels can be attributed to the stronger polarity of methanol.