Electrochemical Detection of Sugar-related Compounds Using Boron-doped Diamond Electrodes

Hayashi, Tomohisa; Sakurada, Ikuo; Honda, Kensuke; Motohashi, Shigeyasu; Uchikura, Kazuo

doi:10.2116/analsci.28.127

Cited by 13 publications

(7 citation statements)

References 39 publications

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“…Removal of TA was not observed at the OCP (0–20 min), was removed 18.7 ± 2.0% in the permeate stream at an anodic potential of 2.14 V (20–40 min), and was removed 57.8 ± 1.2% at an anodic potential of 2.64 V (>40 min) (Figure c). Figure d shows the detection of HTA in the permeate stream, which indicates that HTA concentrations approximately doubled upon raising the potential from 2.14 to 2.64 V. The yield of HTA was 0.03 ± 0.03% at 2.14 V and 0.1 ± 0.06% at 2.64 V. Reported OH • generation potentials are above 2.2 V, and at potentials higher than 2.8 V, significant concentrations of OH • form. − Therefore, our experimental results are consistent with the standard electrode potential for the OH • generation half reaction (H 2 O ↔ OH • + H + + e – ) ( E o = 2.38 V), and provide conclusive evidence for OH • formation on the Ti 4 O 7 anode (REM-3).…”

Section: Resultssupporting

confidence: 82%

Development and Characterization of Ultrafiltration TiO₂ Magnéli Phase Reactive Electrochemical Membranes

Guo

Yin

Chaplin

2016

Environ. Sci. Technol.

191

122

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This research focused on the synthesis, characterization, and performance testing of a novel Magnéli phase (TinO2n-1), n = 4 to 6, reactive electrochemical membrane (REM) for water treatment. The REMs were synthesized from tubular asymmetric TiO2 ultrafiltration membranes, and optimal reactivity was achieved for REMs composed of high purity Ti4O7. Probe molecules were used to assess outer-sphere charge transfer (Fe(CN)6(4-)) and organic compound oxidation through both direct oxidation (oxalic acid) and formation of OH(•) (coumarin, terephthalic acid). High membrane fluxes (3208 L m(-2) h(-1) bar(-1) (LMH bar(-1))) were achieved and resulted in a convection-enhanced rate constant for Fe(CN)6(4-) oxidation of 1.4 × 10(-4) m s(-1), which is the highest reported in an electrochemical flow-through reactor and approached the kinetic limit. The optimal removal rate for oxalic acid was 401.5 ± 18.1 mmol h(-1) m(-2) at 793 LMH, with approximately 84% current efficiency. Experiments indicate OH(•) were produced only on the Ti4O7 REM and not on less reduced phases (e.g., Ti6O11). REMs were also tested for oxyanion separation. Approximately 67% removal of a 1 mM NO3(-) solution was achieved at 58 LMH, with energy consumption of 0.22 kWh m(-3). These results demonstrate the extreme promise of REMs for water treatment applications.

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Section: Resultssupporting

confidence: 82%

Development and Characterization of Ultrafiltration TiO₂ Magnéli Phase Reactive Electrochemical Membranes

Guo

Yin

Chaplin

2016

Environ. Sci. Technol.

191

122

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“…However, the latter is more convenient for the deposition of doped diamond on large surfaces (Luong et al, 2009). Different types of substrates can be used for deposition of BDD films, such as silicon (Haenni et al, 1998), tungsten (Pleskov et al, 1987), and niobium (Hayashi et al, 2012), among others (Luong et al, 2009). Silicon substrates are the most used bases in electroanalysis.…”

Section: Fabrication and Surface Activation Procedures For Bdd Electrmentioning

confidence: 99%

Boron Doped Diamond Electrodes in Flow-Based Systems

et al. 2019

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Boron-doped diamond (BDD) electrodes present several notable properties, such as the largest potential window of all electrode materials (especially in anodic potentials), low background and capacitive currents, reduced fouling compared to other electrodes, mechanical robustness, and good stability over time. On the other hand, flow-based systems are known as well-established approaches to minimize reagent consumption and waste generation and with good compromise between sample throughput and analytical performance (mechanization of chemical assays). This review focuses on the use of BDD electrodes for electrochemical detection in flow systems, such as flow injection analysis (FIA), batch injection analysis (BIA), high performance liquid chromatography (HPLC), and capillary electrophoresis (CE). The discussion deals with the historical evolution of BDD, types of electrochemical pre-treatments (cathodically/H-terminated or anodically/O-terminated), cell configurations, and analytical performance. Articles are discussed in chronological order and subdivided according to the type of flow system: FIA, BIA, HPLC, and CE.

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“…Serum samples [186] (continued) 7.5 Hyphenated Techniques for LC and FIA M Urine and plasma samples [198] (continued) [209] (continued) …”

Section: Hyphenated Techniques For Lc and Fiamentioning

confidence: 99%

Electrochemical and Hyphenated Electrochemical Detectors in Liquid Chromatography and Flow Injection Systems for Drug Compound Analysis

Özkan

Kauffmann

Zuman

2015

Monographs in Electrochemistry

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Electrochemical Detection of Sugar-related Compounds Using Boron-doped Diamond Electrodes

Cited by 13 publications

References 39 publications

Development and Characterization of Ultrafiltration TiO₂ Magnéli Phase Reactive Electrochemical Membranes

Development and Characterization of Ultrafiltration TiO₂ Magnéli Phase Reactive Electrochemical Membranes

Boron Doped Diamond Electrodes in Flow-Based Systems

Electrochemical and Hyphenated Electrochemical Detectors in Liquid Chromatography and Flow Injection Systems for Drug Compound Analysis

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Electrochemical Detection of Sugar-related Compounds Using Boron-doped Diamond Electrodes

Cited by 13 publications

References 39 publications

Development and Characterization of Ultrafiltration TiO2 Magnéli Phase Reactive Electrochemical Membranes

Development and Characterization of Ultrafiltration TiO2 Magnéli Phase Reactive Electrochemical Membranes

Boron Doped Diamond Electrodes in Flow-Based Systems

Electrochemical and Hyphenated Electrochemical Detectors in Liquid Chromatography and Flow Injection Systems for Drug Compound Analysis

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Product

Resources

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Development and Characterization of Ultrafiltration TiO₂ Magnéli Phase Reactive Electrochemical Membranes

Development and Characterization of Ultrafiltration TiO₂ Magnéli Phase Reactive Electrochemical Membranes