2.1 Materials
The reagents used in this synthesis process were tetraethyl
orthosilicate (TEOS, analytical grade, Damao Chemical Reagent Factory,
China), tetrabutylammonium
hydroxide (TBAOH, 40 wt % aqueous solution, Energy Chemical, China),
aluminum isopropoxide (analytical grade, Aladdin), iron citrate
(analytical grade, Aladdin), iron (III) chloride (Adamas-beta), benzyl
alcohol (analytical grade, Damao Chemical Reagent Factory, China), and
1,3,5-trimethylbenzene (analytical grade, Aladdin). All water in the
experiment was deionized water.