Experiment s. Synthesis of Nano Particles and Encapsulation Synthesis of Hexagonal Mesoporous Silica & Carbon Synthesis of Organic and Carbon Xerogels Synthesis of Silver NanoWires. Demostration Experiments. Sol-Gel Synthesis via TMOS
Mix the reactives
Hydrolysis and Condesation reactions take place
pH (final product)
Temperature (crystal phase)
Precursor (Type of material)
Aerogels are a unique, nanostrutured material derived from gels. Gels are a novel class of material exhibiting solid-like behavior although consisting predominantly of a liquid phase. Their solidity derives from a continuous interpenetrating framework that, in essence, acts like a molecular scaffold extending throughout the liquid. This perspective of a gel as a molecular web in a liquid has found many industrial applications.
Figure 1: A silicon oxide low density aerogel
The uniqueness of surfactant templated materials allows a variety of metal oxides to be formed with uniform honeycomb structure and surface area approaching 1000 m2/g. Surfactant templated materials have already been synthesized by the authors These materials were synthesized with Mg, Cr, Ru, Pt, and Co doped in the MCM-41 silica oxide.
FIGURE 7. TEM of MCM-41 synthesized by the author
(A) 60Å, (B) 89 Å, (C) 200 Å, (D) 260 Å.
FIGURE 8: TEM of mesoporous silica with different average pores sizes
Anodized aluminum is an ideal substrate in that it possesses vertical pores perpendicular to its surface.These nanopores are formed by electrochemical etching and pore diameter can be precisely controlled from 300 nm down to 2nm.
Figure 5: Anodized Alunminum
Figure 6: Diagram for using anodized aluminum to synthesize carbon nanotubes
FIGURE 4: Nanotube Reactor for CVD Synthesis of Carbon Nanobes in Our Laboratory
Below is pictured a diagram of the unique geometry of a carbon nanotube as well as a transmission electron micrograph of a single wall nanotube produced in our department.
FIGURE 2: Open Nanotube (Newman)
At 100-150 times the strength of steel yet only 1/60th of its weight, nanotubes are being recognized as the penultimate fiber with a promise for material technology far surpassing all previous fibers yet created. This promise, as noted, is far beyond just the properties obtained with carbon fibers, now used in the highest performance composites. Potentially, future airplanes formed from
CARBON NANOTUBE TEM OF NANOTUBE
FIGURE 3: Nanostructure and TEM of single wall nanotube as synthisized