(497d) Electrochemical Synthesis of Zeolite Coatings

Zeolite coatings are studied as catalysts, adsorbents, and molecular sieves for membranes separation, membrane reactor, and chemical sensor applications. Zeolite coatings have also been studied as anti-corrosive films for metals and alloys, antimicrobial and hydrophilic films for HVAC (i.e., heating, ventilation, and air conditioning), and dielectrics for semiconductor applications. In-situ deposition of zeolites has been the most widely researched technique in the past two decades because it allows the direct growth of zeolite crystals on the support, which offers high adhesion and cohesion between the zeolite coating and the support. Although, these require high process temperatures and long synthesis times. This talk discusses a novel electrochemical approach to synthesize zeolite coatings. The synthesis approach reduced zeolite film synthesis time and energy input. The coating morphology and crystallinity depend on temperature, time, zeolite precursor composition, and applied current. Electrochemical synthesis is a simple and fast pathway to preparing zeolite coatings with a potential to be generalized for developing zeolite coatings with diverse framework structures on substrates with complicated geometries.