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Table 3 CNT-based nonenzymatic electrochemical glucose sensors

From: Carbon nanotubes: a powerful bridge for conductivity and flexibility in electrochemical glucose sensors

Classification

Electrode

Synergistic effect with CNT

Detection method

Linear range (mM)

LOD (µΜ)

Electrolyte

Detection sensitivity (µA mM−1 cm−2)

Inferences

Stable days

Real sample analysis

Refs.

Noble metals and CNT-based

3MPBA-Pt NPs/CNTs

Not mentioned

CV

0–10

4.5

0.5 M KOH

22.25 mVmM−1

UA, AA, Fru, Ur, acetaminophen

Human urine

[96]

GCE-MWCNTs-MSA-AuNPs

Not mentioned

Amperometry

0.12–3.5 µM

0.036

KOH

22.9 µA cm−2

UA, H2O2, IM drug

Urine

[100]

AuNPs-MWCNTs-CS cryogel/AuE

Yes

Amperometry

0.001–1.0

0.5

0.050 M NaOH

3.50 ± 0.06 µA mM−1

AA, UA, DA and Cl

90%, 525 inj

Human plasma

[102]

PdNS/f-CNT/SPCE

Yes

Amperometry

1–41

95

0.1 M PBS

(pH = 7.4)

9.3

AA, DA, Gal, PCM

Human blood

[104]

Ni@f-MWCNT/GCE

Not mentioned

CV and CA

0.025–1

0.021

0.1 M NaOH

70,000

AA, DA, UA, NaCl

 > 10 weeks

Human blood serum

[112]

CuNPs/HD-CNTf

Yes

CV and Amperometry

%1.%2–1

28 nM

0.1 M NaOH

1.942

AA, DA, UA, NaCl, Fru, Lac, Suc

7

Human serum, human urine

[151]

Fc-CHIT/CNT@Cu

Yes

CV and CA

0.2–22

13.52

0.1 M NaOH

1.256

UA, AA, DA

22

[114]

Co-POM/MWCNT

Yes

CV and Amperometry

0.1–10.0

1.21

0.1 M NaOH

256.4

AA, PH

5 weeks

Coke, juice

[116]

Alloy and CNT- based

Pd–Ni@f-MWCNT/GCE

Not mentioned

CV and CA

Up to 1.4

0.026

0.1 M NaOH

71

AA, DA, UA, Lac, Fru, NaCI

10 weeks

Human blood serum

[118]

GO/MWCNT/Au@Pt/GCE

Yes

DPV

0.00005–0.1 and 0.1–2.5

0.042

0.1 M NaOH

330

AA, DA, L-GSH

Human serum

[122]

Metal oxide composite and CNT- based

CuO@CNTFs

Yes

CA

up to 13

1.4

0.1 M KOH

3000

[128]

Cu/g-SiCNT/CuO

Yes

CV and Amperometry

0.001–4.48

0.8

0.1 M KOH

2051

DA, UA, AA

2 weeks, 95.5%

Human blood plasma

[129]

Co3O4-MCNT / GCE

Not mentioned

Amperometry

0.001–0.122

0.28

0.1 M NaOH

2550

DA, AA, K+, Na+, Mg2+, Ca2+

2 weeks

Human serum

[131]

Co-Co3O4/CNT/CF

Not mentioned

Amperometry

0.0012–2.29

0.4

0.1 M NaOH

637.5

UA, DA, KCl, Gal

16

[132]

NiCeOx/MWCNTs

Yes

CV and CA

0.007–0.466, 0.466–3.44

1.8

0.1 M NaOH

271.53 and 429.95

l-Arginine, AA, UA, DA, H2O2, NaCl

7

Human serum

[133]

MOF and CNT-based

Ag NPs/ZIF-67 @CNT-1.0/GCE

Yes

CV and Amperometry

0.010–7.0

0.46

0.1 M NaOH

469.4

UA, DA, AA, Arg, Cys

28

[140]

Ag@ZIF-67/MWCNTs/NF

Not mentioned

CV and Amperometry

0.033–0.4

0.49

0.1 M NaOH

13.014

UA, AA

[141]

Co-MOF@CNTs

Yes

CV and Amperometry

0.01–0.06

21

0.1 M NaOH

104.37

UA, Ur, inorganic salt

[142]

NCNT MOF CoCu

Not mentioned

CV

0.05–2.5

0.15

0.1 M PBS (pH = 7.0)

1027

UA, DA, AA

60, 96%

Human serum

[143]

Conductive polymer and CNT- based

PEDOT: PSS-CuO-MWCNTs/PGE

Not mentioned

CV and CA

Up to 10

0.23

0.1 M NaOH

663.2

UA, DA, AA, Fru, Suc, Lac

30, 93%

[146]

GC/PCA@MWCNT-CuO

Yes

CV and Amperometry

0.002–9

2.3

PBS (pH = 7.4)

2412

UA, AA, l-cyst, DA

Human serum, human blood

[148]

MWCNTs-TBA-MIPs/AFC MEM

Yes

CV and DPV

0.001–0.18

0.61

10 mM PBS (pH = 7.4)

UA, DA, AA, GA, Xyl

Human serum

[145]

  1. “–” means information not available in the article
  2. CNT carbon nanotube, MWCNT multi-walled carbon nanotube, 3MPBA 3-mercaptophenylboronic acid, AA ascorbic acid, AFC aminoferrocene, AuE Au (Gold) electrode, Arg arginine, CA chronoamperometry, CF carbon foam, Co-POM K7[CoIIICoII(H2O)W11O39]15H2O, CS chitosan, Cys cysteine, CV cyclic voltammetry, Amp amperometry, CNT carbon nanotube, CNTF carbon nanotube non-woven fabrics, DA dopamine, DPV differential pulse voltammetry, Fc-CHIT ferrocene-chitosan, f-CNT functionalized carbon nanotube, Fru fructose, FTO fluorinetin oxide, GA glucoamylase, Gal galactose, GC glassy carbon, GCE glassy carbon electrode, GO graphene oxide, g-SiCNT graphenic SiC nanotube, HD-CNTf highly densified carbon nanotube fiber, IM imatinib mesylate, LA lactic acid, Lac lactose, Fru fructose, Suc sucrose, l-GSH: l-Glutatione reduced, MCNT multiwalled carbon nanotube, MEM microelectrode module, MOF metal–organic framework, l-cyst l-cysteine, MSA mercaptosuccinic acid, MWCNT multi-walled carbon nanotube, MWCNTs-TBA-MIP multi-walled carbon nanotube-teamed boronate affinity-based molecular imprinting polymer, NCNT nitrogen-doped carbon nanotube, NF nickel foam, NiCeOx nickel and cerium mixed oxide, NP nanoparticle, PBS phosphate buffer, PCA poly caffeic acid, PCM paracetamol, PdNS Pd nanosheets, PH pohenol, PEDOT:PSS poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), SPCE screen-printed carbon electrode, UA uric acid, Ur urea, Xyl xylose, ZIF-67 co-based zeolitic imidazolate framework