A facile synthesis of CuFe2O4/Cu9S8/PPy ternary nanotubes as peroxidase mimics for the sensitive colorimetric detection of H2O2 and dopamine. Issue 34 (16th August 2017)

• Record Type: Journal Article
• Authors: Yang, Zezhou; Ma, Fuqiu; Zhu, Yun; Chen, Sihui; Wang, Ce; Lu, Xiaofeng
• Is Part Of: Dalton transactions. Volume 46:Issue 34(2017)
• Page Start: 11171
• Page End: 11179
• Publication Date: 2017-08-16
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt02355c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : CuFe2 O4 /Cu9 S8 /PPy ternary nanotubes as robust peroxidase-like mimics for the sensitive detection of dopamine have been developed. Abstract : Synergistic effects play an important role in improving the catalytic activity for enzyme-like reactions. Compared to individual nanomaterials, a system consisting of multiple components usually exhibits enhanced catalytic activity as an enzyme mimic. Herein we describe the synthesis of CuFe2 O4 /Cu9 S8 /polypyrrole (PPy) ternary nanotubes as an efficient peroxidase mimic via a three-step approach involving an electrospinning process, annealing treatment and hydrothermal reaction. The remarkably enhanced catalytic activity of CuFe2 O4 /Cu9 S8 /PPy ternary nanotubes as peroxidase mimics over individual CuFe2 O4 nanofibers, CuFe2 O4 /CuO composite nanofibers, CuFe2 O4 /CuS composite nanofibers, and PPy materials has been achieved, demonstrating the presence of a synergistic effect among the components. The steady-state kinetic experiment suggests a good catalytic efficiency of the CuFe2 O4 /Cu9 S8 /PPy ternary nanotubes. On the basis of high catalytic activity, a colorimetric platform for the sensitive detection of H2 O2 and dopamine has been developed. This work not only offers a simple approach for the fabrication of a high performance peroxidase-like nanocatalyst, but also provides its promising potential applications in biosensors, medical diagnosis, and environmental monitoring.