Preparation of MXene-Carbon Nanotube Microspheres and Its Application in Electrochemical Detection of Nitroaromatic Compounds
10.19756/j.issn.0253-3820.231177
- VernacularTitle:MXene-碳纳米管微球的制备及其对硝基芳烃化合物的电化学检测性能
- Author:
Yu LIU
1
;
Hou-Shen LI
;
Qing-Shuang YAO
;
Pei-Yao LI
;
Yi-Min SUN
Author Information
1. 武汉工程大学材料科学与工程学院,等离子体化学与新材料湖北省重点实验室,武汉 430205
- Keywords:
MXene-carbon nanotube microspheres;
Melamine formaldehyde resin;
Sacrificial template method;
Chemical vapor deposition;
Nitroaromatic compounds;
Electrochemical detection
- From:
Chinese Journal of Analytical Chemistry
2025;53(3):407-417
- CountryChina
- Language:Chinese
-
Abstract:
The MXene/MF microspheres were prepared by coating MXene nanosheets on melamine formaldehyde(MF)resin microspheres.Co(NO3)2 was adsorbed on the surface of the microspheres by impregnation,and then calcined at high temperature in an argon atmosphere.MF pyrolysis generated reducing gases such as CO and NH3,reducing Co2+to elemental Co,which was then used as a catalyst for in situ growth of carbon nanotube(CNT)through chemical vapor deposition(CVD),forming MXene-Co-CNT microspheres(MXene-Co-CNT MS).During this process,the pyrolysis of MF microspheres had dual effects.On one hand,the template was sacrificed to produce an internal hollow structure,and on the other hand,the generated gas worked as carbon source to generate CNT,forming an external sea urchin-like structure.Both of them promoted the formation of a novel structure,which combined the advantages of large specific surface area and good conductivity,thus possessing excellent electrocatalytic activity.The MXene-Co-CNT MS was modified on glassy carbon electrode(GCE)and further used in highly sensitive detection of nitroaromatic compounds(NACs).The detection limits of MXene-Co-CNT MS/GCE for 2,4,6-trinitrotoluene(TNT),1,3,5-nitrobenzamide(TNB),2,4-dinitrotoluene(DNT),1,3-dinitrobenzene(DNB),1-Cl-2,4-dinitrotoluene(Cl-DNB),and 4-nitrophenol(4-NP)were 26.84,31.60,35.03,54.14,43.86 and 28.67 nmol/L,respectively.It also had excellent anti-interference ability,and was used to detect NACs in environmental water samples accurately.
