Spectroscopic detection of Hydrogen peroxide with an optical fiber probe using chemically deposited Prussian blue

Khorami, Hamed Akbari; Botero-Cadavid, Juan F.; Wild, Peter; Djilali, Ned

doi:10.1016/j.electacta.2013.10.186

Cited by 25 publications

(19 citation statements)

References 47 publications

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“…AROUND HEREIn addition to enabling the amperometric detection of H2O2, these PB-based electrodes also allow optical quantification through reflectance spectroscopy. It is surprising that, whilst the electrochemical detection of H2O2 at Prussian Blue electrodes is amply demonstrated and are much fewer examples of optical quantification of H2O2 at Prussian Blue electrodes, including electrodeposited Prussian Blue layers [5,14,46,47]. The electrochromic properties of the fabricated PB-SPEs were also exploited in the optical quantification of hydrogen peroxide.…”

mentioning

confidence: 99%

Electrochromic biosensors based on screen-printed Prussian Blue electrodes

Pellitero

Fremeau

Villa

et al. 2019

Sensors and Actuators B: Chemical

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Highlights We present the production of an electrochromic screen-printable paste based on Prussian Blue. These blue electrodes display excellent spectroelectrochemical reversibility and high catalytic activity towards the reduction of H2O2.  These blue electrodes enable both the electrochemical and optical quantitative determination of hydrogen peroxide.  The reported blue electrodes are highly suitable transducers for the construction of oxidase-based biosensors.  A glucose biosensor is presented to demonstrate the spectroelectrochemical capabilities of these new electrodes. AbstractPrussian Blue (PB)-modified graphite screen-printed electrodes are increasingly being used in electrochemical biosensors. However, they do not allow the observation of the electrochromism of PB. This work presents the construction of PB-based, electrochromic screen-printed biosensors. Although electrically more resistive than their graphite counterparts, these new PBbased electrodes enable both the amperometric and colorimetric detection of hydrogen peroxide.This is the first time that this has been achieved using screen-printed electrodes, and we demonstrate it spectroelectrochemically on a glucose biosensor. The biosensor electrochemical performance equals that of previously reported PB/graphite electrodes, being able to detect down to 4 µM H2O2 and 54 µM glucose. At the same time, and in contrast to PB/graphite electrodes, the new PB-based electrodes afford the optical detection of these two analytes down to 1.2 µM and 15 µM, respectively. The dynamic ranges of the glucose biosensors obtained at the PBbased electrodes are 0.1-1 mM (amperometric) and 0.025-2.5 mM (Colorimetric), matching the physiological glucose concentration range in body fluids other than blood or serum.

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mentioning

confidence: 99%

Electrochromic biosensors based on screen-printed Prussian Blue electrodes

Pellitero

Fremeau

Villa

et al. 2019

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

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“…As reported in our previous work [20], 10 mmol L -1 of potassium ferricyanide, as a single-source precursor, is added to 25 mL of an aqueous solution of 0.1 mol L -1 HCl. The optical fiber is then immersed in this prepared mixture, and held at 40 °C under continuous stirring at 300 rpm for 10 hours.…”

Section: Sensor Fabricationmentioning

confidence: 99%

“…On the other hand, Prussian blue (PB), ferric ferrocyanide, is widely used for making sensors and biosensors for detection and measurements of H 2 O 2 [11,18]. In particular, optrodes based on PB have shown reliable response to H 2 O 2 concentration [19,20]. These sensors were prepared by depositing PB onto the tip of multimode optical fibers, with PB serving as a spectroscopic indicator of H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

“…In this technique, the precursor may participate in several consecutive reactions to arrive at the final product. The single-source precursor technique was selected in this work to deposit PB onto the optical fiber because this approach leads to sensors with better long-term stability in aqueous solutions at pH 4 [20]. The single-source precursor technique is a more straightforward process than the LbL technique and results in more stable PB film on the tip of the optical fiber.…”

Section: Introductionmentioning

confidence: 99%

“…Because optical fibers are made of non-conductive materials, the chemical deposition of PB has been preferred for constructing PB-based fiber-optic sensors. Among chemical deposition methods, single-source precursor and layer-by-layer (LbL) techniques have been used successfully to prepare PB-based H 2 O 2 optrodes [14,20]. However, the performance of PB-based H 2 O 2 sensors prepared with LbL is limited in environments spanning a range of pH values and although the performance of this type of sensors is slightly improved by adding capping bilayers on the LbLbased PB film, long-term stability is poor.…”

Section: Introductionmentioning

confidence: 99%

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