Morphological and Electrochemical Characterization of Ti/MxTiySnzO2 (M = Ir or Ru) Electrodes Prepared by the Polymeric Precursor Method

Carneiro, Jussara F.; Silva, Jéssica R.; Rocha, Robson S.; Ribeiro, Josimar; Lanza, Marcos R.V.

doi:10.4236/aces.2016.64037

Cited by 9 publications

(3 citation statements)

References 29 publications

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“…That is the case of tin oxide, a low-cost material with good catalytic activity [ 16 , 17 ]. Ti/RuO 2 -TiO 2 -SnO 2 electrodes synergistically integrate stability and sensing capabilities that can enable target analytes monitoring for water quality and industrial applications [ 7 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Vasconcellos

Silva

Lee

et al. 2021

Sensors

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Urea is an added value chemical with wide applications in the industry and agriculture. The release of urea waste to the environment affects ecosystem health despite its low toxicity. Online monitoring of urea for industrial applications and environmental health is an unaddressed challenge. Electroanalytical techniques can be a smart integrated solution for online monitoring if sensors can overcome the major barrier associated with long-term stability. Mixed metal oxides have shown excellent stability in environmental conditions with long lasting operational lives. However, these materials have been barely explored for sensing applications. This work presents a proof of concept that demonstrates the applicability of an indirect electroanalytical quantification method of urea. The use of Ti/RuO2-TiO2-SnO2 dimensional stable anode (DSA®) can provide accurate and sensitive quantification of urea in aqueous samples exploiting the excellent catalytic properties of DSA® on the electrogeneration of active chlorine species. The cathodic reduction of accumulated HClO/ClO− from anodic electrogeneration presented a direct relationship with urea concentration. This novel method can allow urea quantification with a competitive LOD of 1.83 × 10−6 mol L−1 within a linear range of 6.66 × 10−6 to 3.33 × 10−4 mol L−1 of urea concentration.

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Section: Introductionmentioning

confidence: 99%

Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Vasconcellos

Silva

Lee

et al. 2021

Sensors

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“…TiO 2 -RuO 2 /Ti electrodes are typical dimensionally stable anodes (DSA) which are commonly applied in the oxidation of organic compounds which occurs with simultaneous evolution of oxygen [2][3][4]. DSA-type electrodes can be prepared with the application of different methods, e.g., thermal decomposition of polymeric precursors or thermal decomposition of precursor metal salts [5][6][7][8][9]. The method of preparation has an effect on the morphological and electrochemical characterization of electrodes.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical and Corrosion Characterization of TiO2-RuO2/Ti Electrodes Modified with WO3

Kuśmierek

2019

Electrocatalysis

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DSA (dimensionally stable anodes)-type electrodes (TiO 2-RuO 2-WO 3 /Ti) were prepared by the thermal decomposition of proper metal precursor on titanium substrate. Electrochemical and corrosion characteristics of these electrodes were determined in [Fe(CN) 6 ] 3− /[Fe(CN) 6 ] 4− system and Na 2 SO 4 solution with the application of cyclic voltammetry and chronoamperometry. The electrode active surface area and the activity towards oxygen evolution were evaluated. Moreover, corrosion resistance of the tested electrodes was estimated by determination of basic corrosion parameters. The introduction of WO 3 into the oxide layer of the electrodes resulted in a decrease in electrode active surface area and in the number of active sites. The modified electrodes revealed lower activity towards OER but higher activity in organic oxidation. However, their stability was significantly higher in comparison with the non-modified electrode. Corrosion characteristics of the tested electrodes proved the highest corrosion resistance in the case of the electrode modified with 3% WO 3. The modification of TiO 2-RuO 2 /Ti with WO 3 seems to be advantageous in the application in electrochemical and photoelectrochemical degradation of organic pollutants.

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“…The introduction of SnO 2 , IrO 2 , RuO 2 , and La 2 O 3 or a combination of them into MMO anodes can improve the performance of the anodes for OER and CER [7][8][9][10][11][12][13][14][15][16]. Thus, the fractional replacement of TiO 2 with active oxides, such as SnO 2 or La 2 O 3 in RuO 2 -based anodes improves the electrocatalytic activity for OER and CER [17][18][19][20].…”

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confidence: 99%

Nanostructured Ti/TiO ₂ –RuO ₂ –La ₂ O ₃ anodes prepared by sol–gel process and the effect of electrolyte composition on their stability

Pouladvand

Asl

Hoseini

et al. 2019

Micro & Nano Letters

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Ti/TiO 2-RuO 2-La 2 O 3 anodes were prepared by sol-gel process. The main aim of this work was to study nanostructured TiO 2-RuO 2-La 2 O 3 coatings and the effect of electrolyte composition on their stability. For this purpose, coatings with different molar ratios applied on titanium substrate. Then, the morphology and electrochemical properties of the anodes in 0.5 M NaCl and 1 M H 2 SO 4 solutions were studied using field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, potentiostatic polarisation, cyclic voltammetry, and accelerated corrosion test (ACT). The results showed that the morphology of all the coatings was cracked-mud microstructure and cracks with a width of 50-500 nm produced in the coatings. It was also observed that corrosion resistance, stability, and electrocatalytic properties of the anodes improve with increased La 2 O 3 content. Then, the optimum TiO 2-RuO 2-La 2 O 3 composition is obtained with a molar ratio of 70:15:15. Besides, the lifetime and stability of the anodes in NaCl solution were higher than H 2 SO 4 , so that the reduction of active elements in the coating with a molar ratio of 70:15:15 after ACT was obtained about 64.7 and 77.4% of before ACT in NaCl and H 2 SO 4 , respectively.

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Morphological and Electrochemical Characterization of Ti/MxTiySnzO2 (M = Ir or Ru) Electrodes Prepared by the Polymeric Precursor Method

Cited by 9 publications

References 29 publications

Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Electrochemical and Corrosion Characterization of TiO2-RuO2/Ti Electrodes Modified with WO3

Nanostructured Ti/TiO ₂ –RuO ₂ –La ₂ O ₃ anodes prepared by sol–gel process and the effect of electrolyte composition on their stability

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Morphological and Electrochemical Characterization of Ti/MxTiySnzO2 (M = Ir or Ru) Electrodes Prepared by the Polymeric Precursor Method

Cited by 9 publications

References 29 publications

Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Electrochemical and Corrosion Characterization of TiO2-RuO2/Ti Electrodes Modified with WO3

Nanostructured Ti/TiO 2 –RuO 2 –La 2 O 3 anodes prepared by sol–gel process and the effect of electrolyte composition on their stability

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Nanostructured Ti/TiO ₂ –RuO ₂ –La ₂ O ₃ anodes prepared by sol–gel process and the effect of electrolyte composition on their stability