TY - JOUR
T1 - Biotemplated synthesis of cold nanoparticle-bacteria cellulose nanofiber nanocomposites and their application in biosensing
AU - Zhang, Taiji
AU - Wang, Wei
AU - Zhang, Dayong
AU - Zhang, Xinxiang
AU - Yurong, Ma
AU - Zhou, Yinglin
AU - Qi, Limin
PY - 2010/4/9
Y1 - 2010/4/9
N2 - Bacteria cellulose (BC) nanofibers are used as robust biotemplates for the facile fabrication of novel gold nanoparticle (NP)-bacteria cellulose nanofiber (Au-BC) nanocomposites via a one-step method. The BC nanofibers are uniformly coated with Au NPs in aqueous suspension using poly(ethyleneimine) (PEI) as the reducing and linking agent. With the addition of different halides, Au-BC nanocomposites with different Au shell thicknesses are formed, and a possible formation mechanism is proposed by taking into account the special role played by PEI. A novel H2O2 biosensor is constructed using the obtained Au-BC nanocomposites as excellent support for horseradish peroxidase (NRP) immobilization, which allows the detection of H2O2 with a detection limit lower than 1 μM. The Au-BC nanocomposites could be further used for the immobilization of many other enzymes, and thus, may find potential applications in bioelectroanalysis and bioelectrocatalysis.
AB - Bacteria cellulose (BC) nanofibers are used as robust biotemplates for the facile fabrication of novel gold nanoparticle (NP)-bacteria cellulose nanofiber (Au-BC) nanocomposites via a one-step method. The BC nanofibers are uniformly coated with Au NPs in aqueous suspension using poly(ethyleneimine) (PEI) as the reducing and linking agent. With the addition of different halides, Au-BC nanocomposites with different Au shell thicknesses are formed, and a possible formation mechanism is proposed by taking into account the special role played by PEI. A novel H2O2 biosensor is constructed using the obtained Au-BC nanocomposites as excellent support for horseradish peroxidase (NRP) immobilization, which allows the detection of H2O2 with a detection limit lower than 1 μM. The Au-BC nanocomposites could be further used for the immobilization of many other enzymes, and thus, may find potential applications in bioelectroanalysis and bioelectrocatalysis.
UR - http://www.scopus.com/inward/record.url?scp=77950252730&partnerID=8YFLogxK
U2 - 10.1002/adfm.200902104
DO - 10.1002/adfm.200902104
M3 - Article
AN - SCOPUS:77950252730
SN - 1616-301X
VL - 20
SP - 1152
EP - 1160
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 7
ER -