Sensing Application — Supramolecular Host-Guest Assembly Based on Phosphotungstate Nanostructures for Pseudocapacitive and Electrochemical Sensing Applications

5 measurement groups · 26 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

cyclic voltammetry electrocatalysis

Voltammetry

2-GCE · Electrode

0.5 M H2SO4 containing ascorbic acid at different concentrations; 50 mV s-1; compared with {P2W18O62}-GCE and 1-GCE.

Geometry: glassy carbon electrode
Context: target 2-GCE compared with controls
Measurement source: 10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 6b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
AA electrocatalytic responseMarked as a best value within this paper	anodic peak I current for 2-GCE increases rapidly with increasing AA concentration; controls have no obvious change	—	—	Text Qualitative	10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 6b

amperometric i-t sensing

2-GCE · Electrode

0.05 M PBS, pH 7.4, continuous N2 stirring, AA detection at +0.36 V.

Atmosphere: N2 flow
Geometry: glassy carbon electrode
Context: target 2-GCE sensor
Measurement source: 10457-10458 (PDF pp.6-7) · Bifunctional Electrocatalytic Properties · Figure 7c; Figure S21b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
AA amperometric detection potential	+0.36 V	0.36 V	—	Text Exact Reported	10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 7c
AA linear range lower boundMarked as a best value within this paper	0.15 uM	0.00015 mM	—	Text Exact Reported	10452 and 10458 (PDF pp.1,7) · Abstract; Bifunctional Electrocatalytic Properties · Figure S21b referenced
AA linear range upper boundMarked as a best value within this paper	2.33 mM	2.33 mM	—	Text Exact Reported	10452 and 10458 (PDF pp.1,7) · Abstract; Bifunctional Electrocatalytic Properties · Figure S21b referenced
AA detection limitMarked as a best value within this paper	0.05 uM (S/N = 3)	0.00005 mM	S/N = 3	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21b referenced
AA calibration R2	0.999	0.999	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21b referenced
AA calibration intercept	13.44 uA	13.44 uA	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21b referenced
AA calibration slope	217.56 uA per concentration unit C	—	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21b referenced
AA steady-state response timeMarked as a best value within this paper	within 1 s	1 s	—	Text Approximate	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure 7c
AA sensitivityMarked as a best value within this paper	3.07 mA mM-1 cm-2	3.07 mA mM-1 cm-2	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21b referenced

cyclic voltammetry electrocatalysis

Voltammetry

2-GCE · Electrode

0.5 M H2SO4 containing H2O2 at different concentrations; 50 mV s-1; compared with {P2W18O62}-GCE and 1-GCE.

Geometry: glassy carbon electrode
Context: target 2-GCE compared with controls
Measurement source: 10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 6a,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
catalytic efficiency CAT orderMarked as a best value within this paper	2 > 1 > {P2W18O62}	—	—	Text Qualitative	10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 6c
H2O2 electrocatalytic response	cathodic peak current increases with H2O2 concentration for all three electrodes	—	—	Text Qualitative	10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 6a

amperometric i-t sensing

2-GCE · Electrode

0.05 M PBS, pH 7.4, continuous N2 stirring, H2O2 detection at -0.41 V.

Atmosphere: N2 flow
Geometry: glassy carbon electrode
Context: target 2-GCE sensor
Measurement source: 10457-10458 (PDF pp.6-7) · Bifunctional Electrocatalytic Properties · Figure 7b; Figure S21a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
H2O2 amperometric detection potential	-0.41 V	-0.41 V	—	Text Exact Reported	10457 (PDF p.6) · Bifunctional Electrocatalytic Properties · Figure 7b
H2O2 linear range lower bound	1.0 uM	0.001 mM	—	Text Exact Reported	10452 and 10458 (PDF pp.1,7) · Abstract; Bifunctional Electrocatalytic Properties · Figure S21a referenced
H2O2 linear range upper bound	3.18 mM	3.18 mM	—	Text Exact Reported	10452 and 10458 (PDF pp.1,7) · Abstract; Bifunctional Electrocatalytic Properties · Figure S21a referenced
H2O2 detection limitMarked as a best value within this paper	0.33 uM (S/N = 3)	0.00033 mM	S/N = 3	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21a referenced
H2O2 calibration R2	0.999	0.999	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21a referenced
H2O2 calibration intercept	-576.69 uA	-576.69 uA	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21a referenced
H2O2 calibration slope	-383.03 uA per concentration unit C	—	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21a referenced
H2O2 sensitivityMarked as a best value within this paper	5.01 mA mM-1 cm-2	5.01 mA mM-1 cm-2	—	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S21a referenced

anti-interference, reproducibility and stability tests

2-GCE · Electrode

Interferents at 10 times substrate concentration; five consecutive tests; five independent 2-GCEs; one-month intermittent storage stability.

Geometry: glassy carbon electrode
Context: target 2-GCE sensor
Measurement source: 10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure 8; Figure S22

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
between-electrode reproducibility RSD for 50 uM AAMarked as a best value within this paper	+/-2.6%	2.6 %	+/-	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S22c
same-electrode reproducibility RSD for 50 uM AAMarked as a best value within this paper	+/-2.3%	2.3 %	+/-	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure S22b
between-electrode reproducibility RSD for 50 uM H2O2Marked as a best value within this paper	+/-2.4%	2.4 %	+/-	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure 8c
same-electrode reproducibility RSD for 50 uM H2O2Marked as a best value within this paper	+/-2.2%	2.2 %	+/-	Text Exact Reported	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure 8b
anti-interference responseMarked as a best value within this paper	KCl, NaCl, Tyr, Ser, Thr, Glu and Lys at 10 times substrate concentration gave very weak/negligible current compared with H2O2 or AA	—	—	Text Qualitative	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure 8a; Figure S22a
one-month sensor stabilityMarked as a best value within this paper	current signals of H2O2 and AA are basically stable over one month at normal temperature storage	—	—	Text Qualitative	10458 (PDF p.7) · Bifunctional Electrocatalytic Properties · Figure 8d; Figure S22d