In this work, silica aerogel was modified by 9,10-dihydro-9-oxa-10-phosphaphenanthrene-1-oxide (DOPO). Then DOPO-immobilized nanoparticles were used as a flame retardant to prepare flame-retardant polyurethane foams. Microscale combustion calorimeter and cone tests employed evaluate the retardancy of It found that both heat release rate total composites reduced with incorporation DOPO immobiliz...

Measurements of superfluid He in 98% aerogel demonstrate the existence of a metastable A-like phase and a stable B-like phase. It has been suggested that the relative stability of these two phases is controlled by anisotropic quasiparticle scattering in the aerogel. Anisotropic scattering produced by axial compression of the aerogel has been predicted to stabilize the axial state of superfluid ...

Introduction: During the January 2004 encounter of the Stardust space probe with comet 81P/Wild 2, a collector containing aerogel tiles was exposed to the cometary particle flux and returned to Earth in January 2006 [1–3]. Most studies so far focused on the millimeter long cavities or tracks in the aerogel, produced by micrometer sized cometary particles [3]. Cometary material has been identifi...

Abstract This study is aimed to investigate the effect of carbon nanotubes on properties lightweight aggregate concrete containing expanded glass and silica aerogel. Combinations (55%) hydrophobic aerogel particles (45%) were used as aggregates. Carbon sonicated in water with polycarboxylate superplasticizer by ultrasonication energy for 3 min. Study results show that incorporating multi-wall s...

Carbon-based TiO₂ composites have many advantages as photocatalysts. However, they suffer from low light efficiency due to the low contrast of TiO₂ with carbon. We synthesized a novel type of anatase-type TiO₂-C hybrid aerogel by a one-pot sol-gel method, which shows a photocatalytic activity for methylene degradation up to 4.23 times that of P25, a commercial photocatalyst from Degussa Inc. Th...

Capacitive desalination is a promising desalination technique. A novel fl ow-through electrode architecture utilizes a newly developed porous carbon material to achieve dramatic improvements in desalination rate and salt concentration reduction. Image depicts a capacitive desalination cell with a fl ow-through architecture. Capacitive desalination (CD) is a promising desalination technique as, ...

Introduction: The use of aerogel as a capture medium for particles traveling at high speeds has been long established (see [1] for a recent review). Aerogel collectors have several times been deployed in Low Earth Orbit. Recently, the Stardust space mission [2] has returned to Earth (Jan. 2006) carrying aerogel which was used to collect an estimated 2800±500 freshly emitted cometary dust grains...