Optimizing the Geometry of a Catalytic Enzyme Microreactor in Porous Silicon

Abstract

The optimization of the catalytic performance of porous silicon enzyme microreactors with respect to the reactor geometry is reported. The microreactors were fabricated in p-type silicon with anisotropic KOH-etching. To increase the effective area the silicon was made porous by anodisation in a HF-ethanol solution. The performance of the different reactors was evaluated by coupling glucose oxidase onto the porous matrix and measuring the catalytic turn-over rate.