Table Info

Table 3.

The performance of the different modified electrodes for the detection of NO₂^–

Electrode materials	Medium	Potential (V)	LR (µM)	LOD (µM)	Ref.
Ag-HNT MoS₂/GCE	0.1 M PBS (pH = 4)	0.8 V (Ag/AgCl)	2–425	0.7	[9]
PEDOT-AuNPs/GCE	0.1 M PBS (pH = 5)	0.78 V (SCE)	3–300	0.1	[10]
rGO-MoS₂/GCE	0.1 M PBS (pH = 7)	0.8 V (Ag/AgCl)	0.2–4,800	0.17	[11]
Cu/Ag/MWCNTs/GCE	0.1 M PBS (pH = 7)	0.85 V (SCE)	1–1,000	0.2	[12]
nHAP-PEDOT/GCE	0.2 M PBS (pH = 8)	0.78 V (SCE)	0.25–1.05	0.083	[30]
Fe₂O₃-MoS₂/GCE	0.1 M PBS (pH = 4)	1.0 V (SCE)	2–6,730	1.0	[31]
CG-Ppy-CS/GCE	0.1 M AcHAC (pH = 4)	0.87 V (Ag/AgCl)	0.2–1,000	0.02	[32]
Poly (4-AB/OT)/CPE	0.1 M PBS (pH = 5)	0.95 V (Ag/AgCl)	6–600	3.5	[33]
a-Fe₂O₃/CNTs/GC	0.1 M PBS (pH = 7)	0.95 V (Ag/AgCl)	0.5–4,000	0.15	[39]
MWCNTs/Pt	0.1 M PBS (pH = 7)	0.70 V (SCE)	1–1,000	0.1	This work

GCE: glassy carbon electrode; PBS: phosphate-buffered solution; CPE: carbon-paste electrode; AuNPs: gold nanoparticles; SCE: saturated calomel electrode; Poly (4-AB/OT): poly(4-aminobenzoic acid/o-toluidine); Ppy: polypyrrole; CG: carboxyl graphene; nHAP: nanosized hydroxyapatite; MWCNTs: multi-walled carbon nanotubes; LR: linear range; LOD: limit of detection; HNT: halloysite nanotube; GC: galssy carbon; PEDOT: poly(3,4-ethylenedioxythiophene); rGO: reduced graphene oxide; CNTs: carbon nanotubes; CS: chitosan; AcHAC: acetic acid-sodium acetate

Declarations

Author contributions

MD: Conceptualization, Writing—original draft, Writing—review & editing, Investigation, Supervision. NKB: Investigation, Validation, Writing—review & editing. BS: Investigation. MT and SAO: Writing—review & editing. All authors read and approved the submitted version.

Conflicts of interest

The authors declare have no conflict of interest in financial, personal, or other relationships with other people, laboratories, or organizations.

Ethical approval

Not applicable.

Consent to participate

Not applicable.

Consent to publication

Not applicable.

Availability of data and materials

The raw data supporting the conclusions of this manuscript will be made available by the authors, without undue reservation, to any qualified researcher.

Funding

Not applicable.

Copyright

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