Nonenzyme Sensor Based on Metal Organic Frameworks/Porphyrin/Multiwalled Carbon Nanotubes for Detection of Glucose†

doi:10.7503/cjcu20160226

Abstract

Abstract:

Metal-organic frameworks(MOFs) are regarded as a new type of electrochemical sensor due to its excellent properties. In this work, Co-TCPP/MWCNTs@Co-MOFs composite was prepared in a gentle method, which is a manifest of the combination of the biomimetic catalytic feature of Co-TCPP, the excellent conductivity of MWCNTs and the high density of active sites of Co-MOFs. A new glucose nonezyme sensor was also constructed, which was experimentally proved processing significant response to glucose.

Key words: Metal-organic framework, Electrochemical sensor, Porphyrin, Carbon nanotubes, Glucose

CLC Number:

O657

TrendMD:

HU Yiping, SHAN Duoliang, LU Xiaoquan. Nonenzyme Sensor Based on Metal Organic Frameworks/Porphyrin/Multiwalled Carbon Nanotubes for Detection of Glucose^†[J]. Chem. J. Chinese Universities, 2016, 37(6): 1082.

Figures/Tables 8

Scheme 1 Synthesis of Co-TCPP/MWCNTs@Co-MOFs and electrochemical glucose sensing

Fig.1 SEM images of pure Co-MOFs(A), Co-TCPP@Co-MOFs(B), MWNCTs@Co-MOFs(C) and Co-TCPP/MWCNTs@Co-MOFs(D)

Fig.2 PXRD patterns(A) and FTIR spectra(B) of different composite materials(A) a. Simulated Co-MOFs; b. as-prepared Co-MOFs; c. Co-TCPP@Co-MOFs; d. MWCNTs@Co-MOFs; e. Co-TCPP/MWCNTs@Co-MOFs; f. MWCNTs; (B) a. Co-TCPP/MWCNTs@Co-MOFs; b. MWCNTs@Co-MOFs; c. Co-TCPP@Co-MOFs; d. Co-TCPP.

Fig.3 CV curves of different composite materials in 1 mmol/L K3Fe(CN)6/K4Fe(CN)6(volume ratio 1∶1) solution containing 0.1 mol/L KCl

Fig.4 CV curves of pure Co-MOFs(A), Co-TCPP@Co-MOFs(B), MWNCTs@Co-MOFs(C) and Co-TCPP/MWCNTs@Co-MOFs(D)Inset: CV curves of MWCNTs(A), Co-TCPP(B), Co-TCPP/MWCNTs(C).

Fig.5 I-t curve of Co-TCPP/MWCNTs@Co-MOFs(A) Amperometric response of Co-TCPP/MWCNTs@Co-MOFs to GL; (B) anti-interference. Inset of (A): the linear relationship between the peak current and concentrations of GL for Co-TCPP/MWCNTs@Co-MOFs.

Table 1 Comparison of the electrochemical detection of glucose sensors

Electrode material	Sensitivity/(μA·mmol·L^-1·cm^-2)	Detection limit/(μmol·L^-1)	Linear range	Ref.
Co-TCPP/MWCNTs@Co-MOFs	2157.1, 115.7	0.28	1—400 μmol/L	This work
MWCNT/PEI/Cu	714	0.50	10 μmol/L—0.3mmol/L	[22]
Pillar-like Cu	699.4499	0.50	1 μmol/L—0.5mmol/L	[23]
Cu@CNTs	437.8	0.05	0—3 mmol/L	[24]

Fig.6 I-t curves of Co-TCPP/MWCNTs@Co-MOFs in 1 mmol/L(A) and 100 mmol/L(B) glucose solutions

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