Development of a (PQQ)-GDH-anode based on MWCNT-modified gold and its application in a glucose/O2-biofuel cell

Surface modifications for enhanced enzyme immobilization and improved electron transfer of PQQ-dependent glucose dehydrogenase anodes

“…Surface confined PQQ has been shown previously to enhance the electron transfer between PQQ-sGDH and the underlying electrode [56,57], although to our knowledge, covalently bound PQQ electrodes have never been produced using the arylamine grafting procedure described here. PQQ has three carboxyl groups, which can be used for immobilization on arylamine using the same carbodiimide mechanism described for hemin attachment.…”

Anodic Bioelectrocatalysis: From Metabolic Pathways To Metabolons

“…Figure 5.3 shows the modifications by Saleh et al with CNTs [53,54]. Several research groups have addressed the application of a SWCNT hybrid system [55,56].…”

“…Surface-assembled GOx is in good electric contact with the electrode due to the application of SWCNTs, which act as conductive nanoneedles that electrically wire the enzyme's active site to the transducer surface [55,56]. Other studies have been reported on improving electrochemical and electrocatalytic behavior and fast electron transfer kinetics of CNT [53]. Table 5.2 summarizes the work done between 2001 and 2011 on MET and DET performed with glucose anodes.…”

Recent Development of Miniatured Enzymatic Biofuel Cells 657

“…Recently, one of the most significant advances in EBFCs is electrode modification by employing carbon nanotubes. (Wang et al2009;Lee et al 2010;Tanne et al 2010 andSaleh et al 2011.) Several research activities have addressed the application of single wall carbon nanotube hybrid system.…”