In Situ Electrochemical Quartz Crystal Microbalance Study of Potential Oscillations during the Electrodeposition of Cu/Cu<sub>2</sub>O Layered Nanostructures

Bohannan, Eric W.; Huang, Ling‐Yuang; Miller, F. Scott; Shumsky, Mark G.; Switzer, Jay A.

doi:10.1021/la980825a

Cited by 131 publications

(121 citation statements)

References 22 publications

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“…Commercially available have previously used electrodeposition to create 9-MHz AT-cut quartz crystals (Seiko EG and G superlattices of metal oxides [14][15][16] and nonequilmodel QA-AM9-AU) were used as the working ibrium layered nanostructures of Cu,0 and Cu which electrode during electrochemical quartz crystal mishowed quantum confinement effects in electrical crobalance (EQCM) experiments. The quartz crystals properties [17][18][19][20][21]. Recently, we reported that epihave a coating on both sides consisting of a 500 A Ti taxial films of 8-Bi 2 03 can be electrodeposited on layer beneath a 3000 A layer of Au.…”

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confidence: 99%

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

et al. 2000

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mentioning

confidence: 99%

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

et al. 2000

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“…26 Maximum growth rate is obtained at −1,1 V. The calculated mean values of film thicknesses are 0.62, 0.77, 4.60 and 1.26 μm for the samples 1-4, respectively. Although the deposition potential has an increment of −0.1 V, the film thicknesses do not increase with the same proportion.…”

Section: Resultsmentioning

confidence: 81%

Stimulated electroluminescence emission from n-ZnO/p-GaAs:Zn heterojunctions fabricated by electro-deposition

et al. 2013

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In this study, n-ZnO thin films were electrochemically deposited on p-GaAs:Zn substrates. The XRD results of ZnO thin films deposited on p-GaAs:Zn substrates at potentials varied from −0.9 V to −1.2 V show a strong c-axis (002) orientation and homogeneity. The current-voltage characteristics exhibit rectification, proving a low turn-on voltage and an ideality factor of 4.71. The n-ZnO/p-GaAs heterostructures show blue-white electroluminescence (EL) emission, which is composed of broad emission bands. In addition to these broad peaks, stimulated emission also appear on the top of the spectra due to the multiple reflections from the mirror like surfaces of ZnO-ZnO and ZnO-GaAs interfaces. Besides, three broad photoluminescence (PL) emission peaks have also been observed peaking at respectively around 3.36 eV, 3.28 eV and 3.07 eV generally attributed to the near bandedge emission, the residual donor level and deep level emission due to the localized defects, respectively. C 2013 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

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“…[18][19][20] It is thus well known that Cu 2 O is electrodeposited during the positive-going spikes in potential, while Cu and Cu 2 O composite is electrodeposited during the negative-going excursions. adjusted to 9.0 using a 5 M NaOH solution.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Pt-CuO Nanocomposite Films for Non-Enzymatic Glucose Sensor Application

Myung

Kim

Lee

et al. 2016

J. Electrochem. Soc.

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Nanocomposite films of Pt-CuO were synthesized via galvanostatic electrodeposition combined with galvanic replacement and post-synthesis thermal anneal. First, Cu-Cu 2 O composite was prepared by galvanostatic electrodeposition; heat-treatment of the as-prepared Cu-Cu 2 O composite at 375 • C for 10 h resulted in a CuO electrode showing response to glucose with long term stability. Further enhanced response to glucose was obtained with a Pt-CuO electrode, which was synthesized by galvanic replacement of Cu-Cu 2 O in 10 mM PtCl 4 solution for 30 s followed by annealing at 375 • C for 10 h. The resulting Pt-CuO electrode showed excellent response to glucose in alkaline solution with an analytical sensitivity of 3812 μAmM −1 cm −2 , a limit of detection (LOD) of 7.5 μM, and a linear response range to glucose up to 0.6 mM. These results may be extended to the fabrication of other noble metal-metal oxide nanocomposite electrodes for sensor applications. Millions of people worldwide are afflicted with diabetes, a disease necessitating regular monitoring of blood glucose levels. Amperometric sensing 1-13 is a particularly popular approach to glucose sensing but classical methodology is based on enzymatic monitoring using glucose oxidase which oxidizes the catalytic conversion of glucose to glucolactone. However, a perennial problem with the enzymatic approach is the lack of long term stability and robustness of the sensing device. In terms of selectivity and sensitivity, enzymatic sensors do generally exhibit better performance than non-enzymatic ones. 1,2,5,6 However, as noted earlier, they suffer from several problems including poor stability, high cost, fragility of the enzyme component, and difficulty of active sensing component preparation. 1,2,[5][6][7] Non-enzymatic approaches, therefore, have gained traction in recent years. Thus non-enzymatic amperometric sensors [8][9][10][11][12][13] have been electrosynthesized using MnO 2 , CuO, or cobalt oxide/hydroxide as the active sensor materials. Several reviews are available in the area of non-enzymatic glucose sensors. [8][9][10][11][12][13] Among the non-enzymatic glucose sensing components based on metals and metal oxides, CuO is one of the more promising materials due to its low cost, high stability and earth abundance.2,14 Copper(II) oxide (CuO) which is a p-type semiconductor with a bandgap 1.2 eV has been widely used in many applications including catalyst, gas sensor, battery, and biosensor. [3][4][5][6][7] This inorganic semiconductor has also shown good electrochemical activity and capability of promoting facile electron transfer rates at low overpotentials in alkaline electrolytes. 15Noble metals such as Pt, Au and Ag have been extensively used to improve sensing performance due to their excellent electrocatalytic activity and biocompatibility.2 Especially, Pt-based metal oxides have been proposed for improving the sensitivity and selectivity of non-enzymatic glucose sensors.1,2,4 Unlike CuO-based glucose sensors, however, there is more limited precedent ...

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In Situ Electrochemical Quartz Crystal Microbalance Study of Potential Oscillations during the Electrodeposition of Cu/Cu₂O Layered Nanostructures

Cited by 131 publications

References 22 publications

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

Stimulated electroluminescence emission from n-ZnO/p-GaAs:Zn heterojunctions fabricated by electro-deposition

Facile Synthesis of Pt-CuO Nanocomposite Films for Non-Enzymatic Glucose Sensor Application

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In Situ Electrochemical Quartz Crystal Microbalance Study of Potential Oscillations during the Electrodeposition of Cu/Cu2O Layered Nanostructures

Cited by 131 publications

References 22 publications

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

Low-temperature electrodeposition of the high-temperature cubic polymorph of bismuth(III) oxide

Stimulated electroluminescence emission from n-ZnO/p-GaAs:Zn heterojunctions fabricated by electro-deposition

Facile Synthesis of Pt-CuO Nanocomposite Films for Non-Enzymatic Glucose Sensor Application

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In Situ Electrochemical Quartz Crystal Microbalance Study of Potential Oscillations during the Electrodeposition of Cu/Cu₂O Layered Nanostructures