Glucose sensing based on an effective conversion of O2 and H2O2 into superoxide anion radical with clay minerals

Chih, Tsailing; Jao, Hsi Jung; Wang, Chong Mou

doi:10.1016/j.jelechem.2004.12.018

Cited by 15 publications

(11 citation statements)

References 57 publications

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“…86 The fluorogenic reaction of non-fluorescent Amplex Red with an oxidant to form fluorescent resorufin was exploited in an HP-based detection scheme. 87 GOx was incorporated in a montmorillonite clay placed on an electrode. This mineral contains Fe(II) and Fe(III) species that catalyze the conversion of O 2 and HP to form the superoxide anion radical.…”

Section: Glucose Sensing Via Measurement Of the Formation Of Hydrogen...mentioning

confidence: 99%

Optical methods for sensing glucose

2011

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This critical review covers the present state of the art in optical sensing of glucose. Following an introduction into the significance of (continuous) sensing of glucose and a brief look back, we discuss methods based on (a) monitoring the optical properties of intrinsically fluorescent or labeled enzymes, their co-enzymes and co-substrates; (b) the measurement of the products of enzymatic oxidation of glucose by glucose oxidase; (c) the use of synthetic boronic acids; (d) the use of Concanavalin A; and (e) the application of other glucose-binding proteins. We finally present an assessment in terms of the advantages and disadvantages of the various methods (237 references).

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Section: Glucose Sensing Via Measurement Of the Formation Of Hydrogen...mentioning

confidence: 99%

Optical methods for sensing glucose

2011

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“…GSG plasmonic interferometer Plasmonic and UV-vis absorption spectrum 20-240 μM 0 . 1μM [24] Hydrogel micropatch arrays and microfluidic devices Fluorescence spectrum 1-5 mM 0.8 mM [25] The clay and zeolite-modified ITO electrodes Fluorescence spectrum 1-150 μM -- [26] Hemin/G-quadruplexes Fluorescence spectrum 0-200 μM 5μM [ 27] Water-in-air droplet generating microfluidic chip Fluorescence spectrum 0-3 mM 6.64 μM [28] Hierarchical cobalt/carbon nanotube hybrid nanocomplex Fluorescence spectrum 1-50 μM 150 nM [29] Single simplicity, high speed, easy operation, and no requirement for any material fabrication. The colorimetric method is also employed to detect glucose.…”

Section: Catalyst or Devicementioning

confidence: 99%

Simple and fast colorimetric and electrochemical methods for the ultrasensitive detection of glucose

Zhang

et al. 2021

Anal Bioanal Chem

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Developing ultrasensitive and user-friendly methods for the detection glucose has attracted more and more attention. By virtue of high selectivity and sensitivity, enzyme-based glucose sensor plays a key role in point-of-care sensing technology for detecting glucose concentration. In this study, Amplex Red (AR), as both indicator and mediator, was investigated to detect glucose in presence of glucose oxidase (GOx) enzymes using colorimetric and electrochemical methods. Without using any advanced techniques and sophisticated nanomaterials, 1 μM glucose can be easily detected through simply detecting the solution color with a visual colorimetric method. On the other hand, the electrochemical method can provide much higher sensitivity for the detection of glucose, which achieves a linear range spanning from 20 nM to 3.56 μM with a limit of 7.3 nM (signal-to-noise ratio SNR = 3). It is also found that the presence of other sugars such as fructose, lactose, and maltose have very limited interference effects on the detection of glucose. More importantly, a bare GC electrode was used in all these electrochemical measurements without any electrode surface modification, guaranteeing a simple and fast operation. The analytical platforms for the detection of glucose presented here not only provide simple, fast, and ultrasensitive methods, but also have the potential to advance the sensing technology in the application of other health diagnostic research areas.

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“…It should be noted that the mixed solution of H 2 O 2 and Fe 2þ is well known as the "Fenton reagent." In this reaction, H 2 O 2 is decomposed to the OH radical (OH • ) and hydroxide ion (OH À ) by the Fe 2þ ion as follows: [39][40][41] Fe 2þ þ H 2 O 2 ! Fe 3þ þ OH • þ OH À :…”

Section: Fe 21 and H 2 O 2 Concentration-dependences Of The Enhancmentioning

confidence: 99%

“…The formed OH radical can further generate other O-containing radicals and O 2 according to reactions (2)-(5), [39][40][41] …”

Section: Fe 21 and H 2 O 2 Concentration-dependences Of The Enhancmentioning

confidence: 99%

Effects of metal ions on Pt electrode dissolution in H2SO4 solution enhanced by the presence of H2O2

Itaya¹,

Shironita²,

Nakazawa³

et al. 2014

Journal of Renewable and Sustainable Energy

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Successive potential cycling of a Pt plate electrode was conducted in H 2 O 2 -containing 0.5 mol dm À3 H 2 SO 4 in the presence of metal ions such as Fe (Fe 2þ , Fe 3þ ), Ce (Ce 3þ , Ce 4þ ), and Mn (Mn 2þ ) ions. First, the potential cycling in 294 mmol dm À3 H 2 O 2 þ 0.5 mol dm À3 H 2 SO 4 without any metal ions confirmed the weight loss of the Pt electrode, which implies Pt dissolution. When the metal ions were added to the solution, the Pt electrode dissolution during the potential cycling was very significant; the Pt weight sharply decreased in the presence of both Fe 2þ and H 2 O 2 . In addition, this enhanced Pt dissolution depended on both the Fe 2þ and H 2 O 2 concentrations, and the maximum Pt weight loss (257 lg) was obtained at the Fe 2þ and H 2 O 2 concentrations of 10 and 294 mmol dm À3 , respectively. The Fe 2þ and H 2 O 2 concentration dependences of the Pt dissolution also correlated with the consumption rate of H 2 O 2 . These results revealed that the Fe 2þ and H 2 O 2 synergically enhanced the Pt dissolution rate. V C 2014 AIP Publishing LLC.

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Glucose sensing based on an effective conversion of O2 and H2O2 into superoxide anion radical with clay minerals

Cited by 15 publications

References 57 publications

Optical methods for sensing glucose

Optical methods for sensing glucose

Simple and fast colorimetric and electrochemical methods for the ultrasensitive detection of glucose

Effects of metal ions on Pt electrode dissolution in H2SO4 solution enhanced by the presence of H2O2

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