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Prussian blue (PB) has good electrochemical reversibility , and easy to prepare , it acts as electron transfer media, for H 2 O 2 Restore exhibited higher electrocatalytic activity and selectivity , are called \However, PB easily detached from the electrode , and its fixity and instability have become scientists to solve important problems. In order to improve the PB fixity , many articles reported the preparation of PB composite materials, looking for an effective carrier of PB . This paper combines the research achievements in recent years , the use of TiO 2 nanotubes large specific surface area , strong adsorption capacity , etc., as a PB carrier, thereby preparing H 2 O 2 sensor , the conclusion is as follows : 1. were synthesized by hydrothermal method TiO 2 nanotubes (TNTs), as a carrier of immobilized PB synthesized novel the PB-TNTs composite materials , combined with the Nafion membrane prepared and PB-TNTs Nafion composite modified glassy carbon electrode has good electrocatalytic activity , and H 2 O 2 < / sub> has significant power reduction catalysis . Studies have shown that , TNTs is an excellent electrical activity material carrier , the adsorption of PB better than ordinary TiO 2 particles . TNTs the PB force and the Nafion membrane immobilized role of the PB is not easy to fall off, modified electrode experiments to further improve stability . 2 prepared by anodic oxidation of TiO 2 nanotube arrays (TNAs), and studied under constant pressure in a variety of different F- containing electrolyte and different oxidation time on the TNAs Ti film on the metal substrate the growth . TNAs successively deposited on the surface of the Au film and PB films prepared TNAs / Au / PB electrode . Studies show that the high conductivity of Au , TNAs / Au deposition easier than TNAs PB. TNAs / Au / PB electrode can be used to detect H 2 O 2 concentration , and can be reused for detecting H 2 O 2 concentration , high stability electrode , PB is not easily detached from the electrode .
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