Molecular-scale cage-confinement pyrolysis route to size-controlled molybdenum carbide nanoparticles for electrochemical sensor

Meiling Wang; Yong Zhang; Mingzhu Cui; Yu Lu; Dongdong Peng; Xun Cao; Cao Wu; Jiadong Zhou; Yu Feng; Weifeng Liu; Zhaofeng Chen; Xuguang Liu; Tian Wang; Pin Song; Yizhong Huang

doi:10.1016/j.bios.2020.112373

Molecular-scale cage-confinement pyrolysis route to size-controlled molybdenum carbide nanoparticles for electrochemical sensor

Biosens Bioelectron. 2020 Oct 1:165:112373. doi: 10.1016/j.bios.2020.112373. Epub 2020 Jun 12.

Authors

Meiling Wang¹, Yong Zhang², Mingzhu Cui³, Yu Lu², Dongdong Peng², Xun Cao², Cao Wu⁴, Jiadong Zhou², Yu Feng⁵, Weifeng Liu⁶, Zhaofeng Chen⁴, Xuguang Liu⁷, Tian Wang⁸, Pin Song⁹, Yizhong Huang¹⁰

Affiliations

¹ Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China; School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
² School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
³ School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, 041004, China.
⁴ College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
⁵ Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, PR China.
⁶ Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
⁷ Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China. Electronic address: [email protected].
⁸ Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore. Electronic address: [email protected].
⁹ School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore. Electronic address: [email protected].
¹⁰ School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore. Electronic address: [email protected].

PMID: 32729505
DOI: 10.1016/j.bios.2020.112373

Abstract

Herein, size-controllable molybdenum carbide nanoparticles (Mo₂C NPs) encapsulated by N, P-codoped carbon shells which simultaneously wrapping on the surface of carbon nanotube (Mo₂C@NPC/CNT) is synthesized through a molecular-scale cage-confinement pyrolysis route. Such confinement achieves a good coating and protection of Mo₂C and the effective control over the size of Mo₂C NPs ranging from 2.5 to 10 nm facilitates a rational investigation into their electrochemical sensor behavior at nanometer scales. The optimized structure consisting of Mo₂C nanoparticles with size of ~5 nm showed an outstanding electrochemical response toward dopamine (DA) and acetaminophen (AC) with detection limits (S/N = 3) of 0.008 μM for AC and 0.01 μM for DA.

Keywords: Acetaminophen; Cage-confinement; Dopamine; Electrochemical sensor; Size-controlled Mo(2)C.

MeSH terms

Biosensing Techniques*
Electrochemical Techniques
Electrodes
Molybdenum
Nanoparticles*
Pyrolysis

Substances

molybdenum carbide
Molybdenum