Zinc oxide-graphitic carbon nitride nanohybrid as an efficient electrochemical sensor and photocatalyst

One-pot insitu facile synthesis of Zinc oxide-graphitic carbon nitride (ZnO-CN) nanohybrid using [Zn(hmp-H)2(H2O)(μ-Cl)Zn(μ-Cl)(Cl)3] as SSMP for ZnO and urea as a source for graphitic carbon nitride. A binder free glassy carbon electrode surface (ZnO-CN/GCE) have been identified for detection of –N...

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Published in:Sensors and actuators. B, Chemical Chemical, 2018-12, Vol.277, p.467-476
Main Authors: Mohammad, Akbar, Ahmad, Khursheed, Qureshi, Anjum, Tauqeer, Mohd, Mobin, Shaikh M.
Format: Article
Language:English
Subjects:
Aromatic compounds
Binder free
Carbon
Carbon nitride
Catalysis
Chemical sensors
Degradation
Dye degradation
Electron conductivity
Electron transfer
Electrons
Glassy carbon
Graphical user interface
Heterojunctions
Methylene blue
Molecular precursor
Nitro-Aromatic sensor
Nitrogen dioxide
Nitrotoluene
Photocatalysis
Pollutants
Sensors
Synthesis
Thermal decomposition
Zinc oxide
Zinc oxide-graphitic carbon nitride nanohybrid
Zinc oxides
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Summary:One-pot insitu facile synthesis of Zinc oxide-graphitic carbon nitride (ZnO-CN) nanohybrid using [Zn(hmp-H)2(H2O)(μ-Cl)Zn(μ-Cl)(Cl)3] as SSMP for ZnO and urea as a source for graphitic carbon nitride. A binder free glassy carbon electrode surface (ZnO-CN/GCE) have been identified for detection of –NO2 containing aromatics with remarkable low detection limit responses of 100 nM, 110 nM, 202 nM towards 4-nitrotoluene (4-NT); 2,4-dinitrotuluene (2,4-DNT); 2,4,6-trinitrophenol (2,4,6-TNP). Moreover, efficient and rapid photo-catalytic degradation of different organic dyes with ∼85–99.6% of degradation efficiency was obtained. [Display omitted] •One-pot insitu facile synthesis of Zinc oxide-graphitic carbon nitride (ZnO-CN) nanohybrid using [Zn(hmp-H)2(H2O)(μ-Cl)Zn(μ-Cl)(Cl)3] as SSMP for ZnO and urea as a source for graphitic carbon nitride.•Binder free glassy carbon electrode surface (ZnO-CN/GCE) for detection of –NO2 containing aromatics.•Remarkable low detection limit responses of 100 nM, 110 nM, 202 nM towards 4-nitrotoluene (4-NT); 2,4-dinitrotuluene (2,4-DNT); 2,4,6-trinitrophenol (2,4,6-TNP).•An efficient and rapid photo-catalytic degradation of Chicago sky blue (CSB), Congo red (CR) and Methylene blue (MB) with ∼85–99.6% of degradation of organic pollutants. In this study, zinc oxide-graphitic carbon nitride (ZnO-CN) nanohybrid has been synthesized via a facile in-situ one pot solid-state thermal decomposition method, here [Zn(hmp-H)2(H2O)(μ-Cl)Zn(μ-Cl)(Cl)3] was used as single-source molecular precursor (SSMP) for ZnO and urea was taken as a source for graphitic carbon nitride (CN). Synthesized ZnO-CN nanohybrid was used as a modifier towards the fabrication of a binder free glassy carbon electrode surface (ZnO-CN/GCE) for detection of –NO2 containing aromatic compounds. The developed sensor shows the remarkable sensitive lower detection limit responses of 100 nM, 110 nM, 202 nM towards the 4-nitrotoluene (4-NT); 2,4-dinitrotuluene (2,4-DNT); 2,4,6-trinitrophenol (2,4,6-TNP), respectively. Further, a superior and rapid photo-catalytic degradation of Chicago Sky Blue (CSB), Congo Red (CR) and Methylene Blue (MB) was also achieved by employing ZnO-CN as a photo-catalyst with the percentage degradation of ∼85-99.6%. The alluring performance of the ZnO-CN nanohybrid towards the sensing of -NO2 containing aromatics and degradation of organic pollutants was ascribed to high surface area of as synthesized nanohybrid and heterojunction formed between the inte
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2018.07.086