High surface area Au-SBA-15 and Au-MCM-41 materials synthesis: Tryptophan amino acid mediated confinement of gold nanostructures within the mesoporous silica pore walls

► High surface area mesoporous Au-SBA-15 and Au-MCM-41 synthesis. ► Tryptophan mediated formation and confinement of gold within silica walls. ► Mechanism involved in forming Au-SBA-15 and Au-MCM-41. ► Improving the textural properties and functional properties of mesoporous materials.