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2 edition of pH sensors based on iridium oxide found in the catalog.

pH sensors based on iridium oxide

pH sensors based on iridium oxide

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Published by Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission in Washington, DC .
Written in English

    Subjects:
  • Hydrogen-ion concentration -- Measurement.,
  • Chemical detectors.

  • Edition Notes

    Statementprepared by M.J. Tarlov ... [et al.].
    ContributionsTarlov, Michael Jay., U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering., National Institute of Standards and Technology (U.S.). Chemical Process Metrology Division.
    The Physical Object
    FormatMicroform
    Paginationvii, 13 p.
    Number of Pages13
    ID Numbers
    Open LibraryOL14666015M

    Flexible iridium oxide (IrOx)-based micro-electrodes were fabricated on flexible polyimide substrates using a sol-gel deposition process for utilization as integrated pseudo-reference electrodes for bio-electrochemical sensing applications. The fabrication method yields reliable miniature on-probe IrOx electrodes with long lifetime, high stability and by: 8. A solid-state pH sensor based on a Nafion-coated iridium oxide indicator electrode and a polymer-based silver chloride reference electrode. Sens. Actuators B Chem. , 22, 13–

    The sensors possess high pH sensitivity and stability of iridium oxide (IrOx) with the efficiency of electrodeposition and conformability and biocompatibility of polyimide substrates; additionally, the device was designed to communicate wirelessly and make use of both Bluetooth-Low-Energy (BLE) transmission and frequency-based. Iridium oxide pH electrodes employing the carbonate melt oxidation method were fabricated with oxidation temperatures of °C, °C and °C, respectively. Scanning electron microscope (SEM) and atomic force microscope (AFM) images showed that the oxide film regularized with the increase in oxidation temperatures.

    (anodic iridium oxide film) [ 1- , while O2 plasma reactive sputtering from an Ir target re- sults in a SIROF (sputtered iridium oxide film) [ Iridium oxide can also be prepared ther- mally either by decomposition at “C of a dip-coated IrCl,.3H,O film [ or by thermal. Iridium oxide has been reported for electrochemical sensing and catalyst applications, especially for water splitting at low or moderate temperatures [] due to its ideal properties such as high catalytic activity, stability, and selectivity under specific reaction conditions [].In addition, IrO x was employed in biosensing applications [7,8] and as a pH sensor [9,10].


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PH sensors based on iridium oxide Download PDF EPUB FB2

Measured sensitivity of our IrO x flexible pH sensor from (a) pH = to pH =and (b) from pH = to pH = There are some factors which may be accounted for the discrepancies from the theoretical values of potential in the pH sensing by: Based on this concept, we report about a long-term stable and highly sensitive solid-state pH sensor functionalized by anodic electrodeposited iridium oxide on a rough nanostructured platinum printed layer.

The sensors showed an excellent reproducibility with a linear super-Nernstian response ( ± mV/pH unit) in a wide pH range (pH 2–11).Cited by: 4. This work demonstrates the implementation of iridium oxide films (IROF) grown on silicon-based thin-film platinum microelectrodes, their utilization as a pH sensor, and their successful formatting into a Cited by: Both RUOF sensors show approximately Nernstian behaviour.

Short term pH precision of the annealed RUOF falls within a confidence interval of ± pH, and stability is maintained within a confidence of ± pH for up to days. The un-annealed RUOF maintains the same precision but only for 20 : R.H.G. Mingels, S. Kalsi, Y. Cheong, H. Morgan.

Abstract: We have developed a sensor array consisting of an iridium oxide (IrO x) electrode for pH measurement, an iridium oxide based ion-selective sensor for sodium detection, and two silver chloride (AgCl) reference electrodes.

The planar sensor array was fabricated on a flexible substrate with simple fabrication processes. The iridium oxide based pH sensor has shown a good performance in comparison to conventional glass pH sensor when it is being calibrated in buffer solutions with 2, 4, 7 and 9 pH values.

Xu et al. prepared iridium and tungsten oxide pH microelectrodes to measure the vertical profiles of sediment pH in the Xiamen West Sea and Jiulong River Estuary. The pH reached a minimum at the interface of aerobic and anaerobic depths (4−5 mm) and tended to remain stable at 20 : Zhengwen Zhou, Juan Li, Dawei Pan, Hong Wei, Chenchen Wang, Fei Pan, Jianjun Xia, Su Ma, Su Ma.

electrode based on this oxide film exhibits very promising pH sensing performance, with an ideal Nernstian response in the tested pH range of 1 to The potential response is fast, with a 90% response time obtained in less than 1 s for all pH changes.

Iridium oxide sensors for acidity and basicity detection in industrial lubricants Article (PDF Available) in Sensors and Actuators B Chemical 96() November with Reads. Herein we report the fabrication of highly sensitive solid-state pH sensors based on iridium oxide nanowires (IONWs) for a wide-range of pH measurements.

IONWs were confined electrodeposits on the indium tin oxide (ITO) electrode using a highly ordered silica nanochannel membrane as the : Lin Zhou, Chen Cheng, Xinru Li, Jialian Ding, Qingjun Liu, Bin Su.

Microscopic pH electrodes were produced by deposition of hydrous iridium oxide onto carbon fiber microelectrodes. The electrodes exhibit two linear regions of potentiometric response between pH 2−6 and pH 6− The electrodes respond to pH changes within 50 ms, and an equilibrium value is reached within 30 s.

By using these electrodes as probes in the scanning electrochemical. The iridium oxide based pH sensor has shown a good performance in comparison to conventional glass pH sensor when it is being calibrated in buffer solutions with 2, 4, 7 and 9 pH values.

The iridium oxide pH sensor is specifically designed to measure the pH on the surface of metal plate. Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications Abstract: This work presents a pH sensor platform combining the high performance of iridium oxide (IrOx) fabricated by cyclic voltammetry with inductively-coupled wireless (ICW) : Paul Marsh, Libu Manjakkal, Xuesong Yang, Miguel Huerta, Tai Le, Lillian Thiel, J.-C.

Chiao, Hung Ca. An iridium oxide microelectrode for monitoring acute local pH changes of endothelial cells. The Analyst(12), DOI: /C5ANF. Jongman Park, Moonhee Kim, Shinseon Kim. Surface renewable nano-iridium oxide polymeric composite pH electrodes. Sensors and Actuators B: Chemical, DOI: / Iridium oxide pH sensing film has been demonstrated with wide pH-sensing ranges, high durability, and small drifts in potentials.

As an alternative to the glass pH electrode, an entirely solid-state pH sensor (pH-sensing and reference electrodes) has been developed based on an annealed permselective polymer (Nafion tm TM)-coated iridium oxide pH indicator electrode and a polymer-modified silver-silver chloride reference electrode.

When a solution of Nafion is coated onto the iridium oxide surface and annealed at °C, it becomes Cited by: The sensor is based on anodically electrodeposited iridium oxide film, as a pH-sensing layer.

Merits of the present sensor include (i) excellent adhesion of the pH sensitive layer to the substrate, (ii) excellent reproducibility of sensor fabrication, (iii) faster preparation procedure, and (iv).

Iridium oxide pH electrodes employing the carbonate melt oxidation method were fabricated with oxidation temperatures of °C, °C and °C, respectively.

Scanning electron microscope (SEM) and atomic force microscope (AFM) images showed that the oxide film regularized with the increase in oxidation temperatures. The pH response, response time and long-term stability of the Author: Penggang Wang, Tengfei Guo, Tiejun Zhao, Zhenxing Du, Zuquan Jin, Biqin Dong, Zhe Li.

This paper reports the results of an experiment on the synthesis and electrodeposition of iridium oxide nanoparticles for the fabrication of a pH sensor. Iridium oxide nanoparticles with mean diameter in the range of 1–2 nm were successfully synthesized and electrodeposited on stainless steel substrate by cyclic voltammetry.

The sensors possess high pH sensitivity and stability of iridium oxide (IrOx) with the efficiency of electrodeposition and conformability and biocompatibility of polyimide substrates; additionally, the device was designed to communicate wirelessly and make use of both Bluetooth-Low-Energy (BLE) transmission and frequency-based load modulation Author: Paul Marsh.

Fabrication and characterization of a novel potentiometric pH electrode based on melt-oxidized iridium oxide film is presented.

The oxide film produced in a lithium carbonate melt has the composition of and shows high chemical stability. The electrode based on this oxide film exhibits very promising pH sensing performance, with an ideal Nernstian response in the tested pH range of 1 to Flexible Iridium Oxide Based pH Sensor Integrated With Inductively Coupled Wireless Transmission System for Wearable Applications.Abstract Citations (1) References (5) Co-Reads Similar Papers Volume Content NASA/ADS.

Micro pH Sensors Based on Iridium Oxide Nanotubes Nguyen, Cuong M.; Rao, Smitha; Seo, Young-Sik; Schadt, Kyle; Hao, Yaowu.