Enhanced electrochemical reduction of hydrogen peroxide on silver paste electrodes modified with surfactant and salt

Gonzalez‐Macia, Laura; Smyth, Malcolm R.; Morrin, Aoife; Killard, Anthony J.

doi:10.1016/j.electacta.2011.01.108

Cited by 16 publications

(16 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…22 The novel electrocatalytic mechanism was based on the formation of liquid crystal lyotropic phases of surfactant which form on the surface of the silver and bring about an enhancement in the reduction of H2O2 at moderate reduction potentials (approx. -100 mV) to avoid interferences.…”

Section: Resultsmentioning

confidence: 99%

Biomedical Diagnostics Enabled by Integrated Organic and Printed Electronics

et al. 2017

Self Cite

View full text Add to dashboard Cite

Organic and printed electronics integration has the potential to revolutionise many technologies, including biomedical diagnostics. This work demonstrates the successful integration of multiple printed electronic functionalities into a single device capable of the measurement of hydrogen peroxide, and total cholesterol. The single-use device employed printed electrochemical sensors for hydrogen peroxide electroreduction integrated with printed electrochromic display and battery. The system was driven by a conventional electronic circuit designed to illustrate the complete integration of silicon ICs via pick and place, or using organic electronic circuits. The device was capable of measuring 8 µL samples of both hydrogen peroxide (0 to 5 mM, 2.72×10 -6 A.mM -1 ) and total cholesterol in serum from 0 to 9 mM (1.34×10 -8 A.mM -1 , r 2 =0.99, RSD <10%, n=3) which was output on a semi-quantitative linear bar display. The device could operate for 10 minutes via a printed battery and display the result for many hours or days. A mobile phone 'app' was also capable of reading the test result and transmitting this to a remote health care provider. Such a technology could allow improved management of conditions such as hypercholesterolemia.Printed electronics is being hailed as a technological revolution, equal in importance to the emergence of microelectronics over 50 years ago. The combined qualities of print-processable organic, inorganic and hybrid (semi)conductive materials which can be deposited onto flexible polymeric substrates using a range of additive, high throughput printing methodologies offer the prospect of low cost mass production capability and the potential for unprecedented levels of technological integration.

show abstract

Section: Resultsmentioning

confidence: 99%

Biomedical Diagnostics Enabled by Integrated Organic and Printed Electronics

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, an enhancement of the catalytic activity of silver screen-printed electrodes towards H 2 O 2 reduction after electrode exposure to a mixed solution of dodecyl benzenesulphonic acid (DBSA) and KCl has been reported. [16] The mixed surfactant/salt modification solution brought about changes in both the morphology and chemical composition of the silver paste electrode surface, which improved the electrochemical reduction of H 2 O 2 at -0.1 V vs. Ag/AgCl up to 80-fold on such material.…”

mentioning

confidence: 99%

“…In previous work, the catalytic enhancement observed on silver screen-printing electrodes after DBSA/KCl treatment was partially attributed to the interaction of micellar/lamellar structures from the solution with the screen printed electrode surface. [16] If the printing process affected the structure of the modification solution, that would change its catalytic effect and would diminish the catalytic enhancement towards H 2 O 2 . Regarding the variability of the modification methods, both techniques exhibited similar relative reproducibility in the measurements, with an average value of 10% in both cases.…”

mentioning

confidence: 99%

“…The buffer solution was prepared as reported before. [16] Cyclic voltammograms were obtained in the potential range from -0.200 to 0.025 V (vs Ag/AgCl) at a scan rate of 0.1 V/s. Amperometry was performed at -0.1 V (vs Ag/AgCl).…”

mentioning

confidence: 99%

“…[27][28][29] Therefore, inkjet printing turned out to be a suitable technique for the deposition of Silver paste electrodes were fabricated according to Gonzalez-Macia et al [16] For the surfactant/salt-based modification, either a solution of 3. which was equivalent to approx. 1270 dpi (drops per inch).…”

mentioning

confidence: 99%

See 2 more Smart Citations

A Printed Electrocatalyst for Hydrogen Peroxide Reduction

2012

Self Cite

View full text Add to dashboard Cite

The modification of silver screen‐printed electrodes with a dodecyl benzenesulfonic acid and KCl solution was performed by inkjet printing. Scanning Electron Microscopy was performed to characterize the electrode surfaces. Electrochemical reduction of H2O2 was studied and compared to electrodes modified by dip‐coating. Analytical parameters of the all‐printed electrode such as LOD, sensitivity and inter‐electrode reproducibility were calculated (5.8×10−6 M, 4.9×10−2 AM−1 cm−2 and approx. 10 %) and contrasted with other data in the literature for the measurement of H2O2. Ink jet printing led to reductions in required surface modification times and improved signal to background levels and reproducibility.

show abstract