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Low Temperature Synthesis of Zeolite Films on Glassy Carbon: Towards Designing Molecularly Selective Electrochemical Devices
Author(s) -
Walcarius Alain,
Ganesan Vellaichamy,
Larlus Olivier,
Valtchev Valentin
Publication year - 2004
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200302991
Subject(s) - glassy carbon , molecular sieve , ascorbic acid , materials science , faujasite , electrochemistry , zeolite , electrode , chemical engineering , carbon fibers , hydrothermal synthesis , inorganic chemistry , hydrothermal circulation , catalysis , organic chemistry , chemistry , cyclic voltammetry , composite material , food science , composite number , engineering
Abstract Faujasite‐type zeolite films have been grown on glassy carbon electrode surfaces embedded in an epoxy resin matrix by a quasi ambient temperature hydrothermal synthesis. The resulting zeolite modified electrodes are mechanically stable and provide an advantageous combination of electrochemical detection with charge and size selectivities at the molecular level, as demonstrated with the aid of some model electroactive probes or analytes (Ru(NH 3 ) 6 3+ , Fe(CN) 6 3− , Ru(bpy) 3 2+ , dopamine, ascorbic acid). To act efficiently as a physical molecular sieve barrier between the electrode surface and the external solution, these films must have a thickness of about 0.7 μm. These results open the door for further development of molecular sieving electrochemistry.