Title: Sol–Gel Template Synthesis of Aluminum Oxide Microtubules
Abstract: Al 2 O 3 microtubules with ca . 60–600 μm in lengths and 2–16 μm in outer diameter have been prepared using water‐soluble ammonium tartrate crystal as a template in a sol‐gel method using aluminum sec ‐butoxide (ASB) as starting materials, which may have potential application in catalytic materials, electronic science or separation technology.