synthesized at different temperatures while other parameters were
identical. MSNs with wormlike pore structures were formed. Most
of the particles are isolated and no junction between each other. All
MSNs obtained at different reaction temperatures possesses narrow
size distribution. The particle sizes of MSNs increased from
21 nm to 38 nm with the elevating of reaction temperature from
40 C to 95 C. The obtained MSNs can be well dispersed inwater to
form transparent suspension.