Elec trodeposition of silver on mu lti wall ca rbon nanotubes m odified gla ssy carbon electro de for sen sing and study of hydrogen peroxide d ecomposition

In recent years, carbon nanotube (CNT) widely used in the con struction of chemical se nsors and biosensors, especially in the ¿eld of supporting materia ls due to their exceptional charac ters [۱]. M eanwhile, silver used as electrochemical s ensors have received much attention due to t heir excellen t biocompatibility and unique catalytic proper ties [۲]. The high surface area of C NT made it possible to load silve r thin film with high catalytic ac tivity. Fabricating CNT-supported silver thin film is thereby desirabl e since it c ombines both the advantages of CN T and silver thin film which may be helpful i n widening the applications. Hydrogen peroxid e is an ess ential mediator in many ¿elds, suc h as food industries, clinical, and e nvironmenta l analyses and it is cr ucial to det ect H۲O۲ accurately and rapidly. I n this paper, we fabricate Ag/MW CNT/GC electrode and further studied by electrochemical methods, which e xhibited well-de¿ned el ectrocatalytic activity towards H۲O۲ reduction.

کلیدواژه ها:

Carbo n nanotube ، Electrocatalyst ، Nanose nsor ، Hydro gen peroxid e ، Kinetic study