Mesoporous silica in the form of an empty nanotube or a nanotube filled with carbon nanotubes and its method of preparation

It is currently quite difficult to obtain a good homogeneous coating on the surface of carbon nanotubes (CNTs) with mesoporous silica due to issues with their dispersal prior to synthesis given that they aggregate easily. In most cases, ultrasound is used for long periods of time in order to obtain a better dispersal of the carbon nanotubes. Oxidising acid treatments are also used to functionalise the carbon nanotube surface and thus improve its dispersibility, but this does not eliminate the need to use ultrasound for long periods of time. We can find very simple syntheses, but the result is not at all homogeneous, and a composite with a homogeneous coating and the correct morphology is not obtained.