CNTs-Pt Formaldehyde Sensor and CNTs-Au Glucose Sensor

Abstract

Abstract: Carbon nanotubes (CNTs) were prepared by CH₄ pyrolysis using chemical vapor deposition (CVD) technique. And then spinning disc processor (SDP) self-assembly technique was used to modify the CNTs with nano Pt and nano Au through electrodeposition processes. Subsequently, CNTs-Pt/GCE electrode and CNTs-Au modified electrode were prepared by electrochemical deposition of platinum particles on CNTs-modified glassy carbon electrode (GCE) and immobilization of glucose oxidase on Au electrode via electrostatic effect, respectively. Finally, the electrochemical behavior of glucose on CNTs-Au electrode and formaldehyde on CNTs-Pt/GCE electrode was investigated by cyclic voltammetry (CV) method in a three-electrode system. The electrochemical test results show that Au nanoparticles and CNTs could effectively increase the specific surface area of the electrode and increase its electron transfer rate. Therefore, CNTs-Au biosensor has good repeatability, stability and rapid glucose detection response, which could be used for the detection of serum glucose concentration in clinical practice. In addition, due to the high dispersion of Pt nano particles and the synergistic effect of CNTs and Pt nano particles, the active sites on the electrode surface are enhanced, so the CNTs-Pt/GCE electrode exhibits high sensitivity and good reproducibility in the detection process of formaldehyde. The above results shows that this work has a very good potential for practical application.

Key words: sensor, spinning disc processor, CNTs-Au, CNTs-Pt, glucose, formaldehyde

CLC Number:

TP212
O657.1

ZHANG Xunhai, WANG Chaohui, LIN Wei, LI Xiaosheng, ZHANG Yong. CNTs-Pt Formaldehyde Sensor and CNTs-Au Glucose Sensor[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(2): 368-374.

References

[1] IIJIMA S. Helical microtubules of graphitic carbon[J]. Nature, 1991, 354(6348): 56-58.
[2] AJAYAN P M, LIJIMA S. Capillarity-induced filling of carbon nanotubes[J]. Nature, 1993, 361(6410): 333-334.
[3] IIJIMA S, ICHIHASHI T. Single-shell carbon nanotubes of 1-nm diameter[J]. Nature, 1993, 363(6430): 603-605.
[4] 林毓韬,徐涛,柳清菊.碳纳米管及其掺杂氧化物半导体气敏传感器[J].功能材料,2011,42(7):1159-1162.
LIN Y T, XU T, LIU Q J. Carbon nanotubes gas sensors and oxide semiconductor doping with carbon nanotubes gas sensors[J]. Journal of Functional Materials, 2011, 42(7): 1159-1162(in Chinese).
[5] VICHCHULADA P, LIPSCOMB L D, ZHANG Q, et al. Incorporation of single-walled carbon nanotubes into functional sensor applications[J]. Journal of Nanoscience and Nanotechnology, 2009, 9(4): 2189-2200.
[6] ZHOU C. Modulated chemical doping of individual carbon nanotubes[J]. Science, 2000, 290(5496): 1552-1555.
[7] NOVOSELOV K S, GEIM A K, MOROZOV S V, et al. Electric field effect in atomically thin carbon films[J]. Science, 2004, 306(5696): 666-669.
[8] CUNCI L, RAO C V, VELEZ C, et al. Graphene-supported Pt, Ir, and Pt-Ir nanoparticles as electrocatalysts for the oxidation of ammonia[J]. Electrocatalysis, 2013, 4(1): 61-69.
[9] ZHANG M L, SU H C, RHEEM Y, et al. A rapid room-temperature NO₂ sensor based on tellurium-SWNT hybrid nanostructures[J]. The Journal of Physical Chemistry C, 2012, 116(37): 20067-20074.
[10] CUI S M, PU H H, LU G H, et al. Fast and selective room-temperature ammonia sensors using silver nanocrystal-functionalized carbon nanotubes[J]. ACS Applied Materials & Interfaces, 2012, 4(9): 4898-4904.
[11] ZHANG Q L, ZHANG Y W, GAO Z H, et al. A facile synthesis of platinum nanoparticle decorated graphene by one-step γ-ray induced reduction for high rate supercapacitors[J]. J Mater Chem C, 2013, 1(2): 321-328.
[12] HERRERA GONZÁLEZ A M, CALDERA VILLALOBOS M, GARCÍA-SERRANO J, et al. Polyelectrolytes with sulfonic acid groups useful in the synthesis and stabilization of Au and Ag nanoparticles[J]. Designed Monomers and Polymers, 2016, 19(4): 330-339.
[13] CHUN Y S, SHIN J Y, SONG C E, et al. Palladium nanoparticles supported onto ionic carbon nanotubes as robust recyclable catalysts in an ionic liquid[J]. Chemical Communications (Cambridge, England), 2008(8): 942-944.
[14] ZOU J L, HUBBLE L J, IYER K S, et al. Bare palladium nano-rosettes for real-time high-performance and facile hydrogen sensing[J]. Sensors and Actuators B: Chemical, 2010, 150(1): 291-295.
[15] CHIN S F, IYER K S, RASTON C L, et al. Size selective synthesis of superparamagnetic nanoparticles in thin fluids under continuous flow conditions[J]. Advanced Functional Materials, 2008, 18(6): 922-927.
[16] SISOEV G M, MATAR O K, LAWRENCE C J. Gas absorption into a wavy film flowing over a spinning disc[J]. Chemical Engineering Science, 2005, 60(7): 2051-2060.
[17] GAO L Z, KIWI-MINSKER L, RENKEN A. Growth of carbon nanotubes and microfibers over stainless steel mesh by cracking of methane[J]. Surface and Coatings Technology, 2008, 202(13): 3029-3042.
[18] BURNS J R, RAMSHAW C, JACHUCK R J. Measurement of liquid film thickness and the determination of spin-up radius on a rotating disc using an electrical resistance technique[J]. Chemical Engineering Science, 2003, 58(11): 2245-2253.
[19] SWAMINATHANIYER K, NORRET M, DALGARNO S, et al. Loading molecular hydrogen cargo within viruslike nanocontainers[J]. Angewandte Chemie International Edition, 2008, 47(34): 6362-6366.
[20] LI L, HE S J, LIU M M, et al. Three-dimensional mesoporous graphene aerogel-supported SnO₂ nanocrystals for high-performance NO₂ gas sensing at low temperature[J]. Analytical Chemistry, 2015, 87(3): 1638-1645.
[21] RIEDEL J, BERTHOLD M, GUTH U. Pyrolytic deposited graphite electrodes for voltammetric sensors: an alternative to nano structured electrodes[J]. Sensors and Actuators A: Physical, 2016, 241: 212-215.