Room temperature electrosynthesis of TinO2n-1 film and its bilayer with PNMPy on mild steel for corrosion protection in sulphuric acid

Pekmez, Nuran Özçiçek; Uğur, Merve; Karaca, Erhan; Ertekin, Zeliha; Pekmez, Kadi̇r

doi:10.1016/j.electacta.2021.137996

Cited by 6 publications

(4 citation statements)

References 60 publications

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“…Presently, the commonly used anode materials in electrocatalysis mainly include boron-doped diamond (BDD) film [19][20][21][22][23], titanium suboxide [15,[24][25][26][27], and carbon material [28][29][30] electrodes and dimensionally stable anodes (DSAs) electrodes [31][32][33][34][35][36]. In terms of the physical properties of titanium suboxide electrodes, the Magneli phase titanium oxide material (Ti n O 2n−1 ) has good electrical conductivity under normal temperature [37]. Additionally, Magnéli phase titanium oxide materials, compared to the conventional electrode materials used in industry, exhibit high chemical stability, corrosion resistance, and a wide electrochemical stability potential window [15,26,37].…”

Section: Electrode Preparationmentioning

confidence: 99%

“…In terms of the physical properties of titanium suboxide electrodes, the Magneli phase titanium oxide material (Ti n O 2n−1 ) has good electrical conductivity under normal temperature [37]. Additionally, Magnéli phase titanium oxide materials, compared to the conventional electrode materials used in industry, exhibit high chemical stability, corrosion resistance, and a wide electrochemical stability potential window [15,26,37]. The material could be used as both cathode and anode, which is ecofriendly and cost-effective [38].…”

Section: Electrode Preparationmentioning

confidence: 99%

“…From the results, Figure S4 shows that titanium suboxide has two peaks at 464.32 eV and 458.49 eV, which belong to Ti2p1/2 and Ti2p3/2, respectively, indicating the existence of Ti 4+ . The characteristic peak at 457.90 eV belongs to Ti 3+ [37,45].…”

Section: Xps Analysismentioning

confidence: 99%

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Electrocatalytic Degradation of Levofloxacin, a Typical Antibiotic in Hospital Wastewater

Han

et al. 2021

Materials

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Presently, in the context of the novel coronavirus pneumonia epidemic, several antibiotics are overused in hospitals, causing heavy pressure on the hospital’s wastewater treatment process. Therefore, developing stable, safe, and efficient hospital wastewater treatment equipment is crucial. Herein, a bench-scale electrooxidation equipment for hospital wastewater was used to evaluate the removal effect of the main antibiotic levofloxacin (LVX) in hospital wastewater using response surface methodology (RSM). During the degradation process, the influence of the following five factors on total organic carbon (TOC) removal was discussed and the best reaction condition was obtained: current density, initial pH, flow rate, chloride ion concentration, and reaction time of 39.6 A/m2, 6.5, 50 mL/min, 4‰, and 120 min, respectively. The TOC removal could reach 41% after a reaction time of 120 min, which was consistent with the result predicted by the response surface (40.48%). Moreover, the morphology and properties of the electrode were analyzed. The degradation pathway of LVX was analyzed using high-performance liquid chromatography–mass spectrometry (LC–MS). Subsequently, the bench-scale electrooxidation equipment was changed into onboard-scale electrooxidation equipment, and the onboard-scale equipment was promoted to several hospitals in Dalian.

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Section: Electrode Preparationmentioning

confidence: 99%

Section: Electrode Preparationmentioning

confidence: 99%

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Electrocatalytic Degradation of Levofloxacin, a Typical Antibiotic in Hospital Wastewater

Han

et al. 2021

Materials

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“…This is because of the Sabatier principle of the HER, , where the adsorption energy of Magnéli phases (Δ G H ) is too positive, meaning that the hydrogen atom is bonded too weakly with most of these materials. More importantly, Magnéli phases have demonstrated strong corrosion resistance, which is widely used in applications, such as cathodic protection during the electrodeposition process − and inert anode material for electrochemical wastewater treatment. − These characteristics made Magnéli phases a promising catalyst for acidic nitrogen electrofixation. Nevertheless, the electrical conductivity of most Magnéli phases is low, which would lead to slow electron transfer at the electrode/electrolyte interface and a high Schottky barrier at the charge transfer interface.…”

Section: Introductionmentioning

confidence: 99%

Acid-Stable Ebonex for Continuous-Flow Nitrogen Electrofixation

Li,

Ding,

Zhang

et al. 2023

Energy Fuels

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Acidic nitrogen electrofixation offers the benefits of abundant proton sources and improved solubility of N 2 that can facilitate the reaction kinetics at three-phase interfaces. However, excessive protons would simultaneously boost competitive hydrogen evolution that consume electrons otherwise for nitrogen electrofixation, leading to low selectivity to ammonia. In this paper, we report an acid-stable ebonex (Ti 4 O 7 ) characteristic of excellent catalytic performances in a 0.1 M HCl electrolyte (pH 1). With the incorporation into continuous-flow cells, the catalyst demonstrates an optimal faradaic efficiency of 23.57% and a large ammonia yield rate of 45.52 μg h −1 cm −2 , which is 2 orders of magnitude higher than that in traditional H-type cells. A further mechanism study has been conducted using density functional theory (DFT) calculations and X-ray absorption near-edge structure (XANES), which indicate the structural advantages of ebonex,such as intrinsic electrical conductivity and low oxidation valence of Ti and Jahn−Teller-type structural distortion. Consequently, the ebonex catalyst can suppress hydrogen evolution, leading to a favorable associative alternating nitrogen electrofixation pathway with the rate-limiting step of N 2 * → NNH*.

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Equilibrium Phase Relations of the CaO-SiO2-Ti3O5 System at 1400 °C and a p(O2) of 10−16 atm

Shi

Qiu

Wan

et al. 2022

JOM

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Room temperature electrosynthesis of TinO2n-1 film and its bilayer with PNMPy on mild steel for corrosion protection in sulphuric acid

Cited by 6 publications

References 60 publications

Electrocatalytic Degradation of Levofloxacin, a Typical Antibiotic in Hospital Wastewater

Electrocatalytic Degradation of Levofloxacin, a Typical Antibiotic in Hospital Wastewater

Acid-Stable Ebonex for Continuous-Flow Nitrogen Electrofixation

Equilibrium Phase Relations of the CaO-SiO2-Ti3O5 System at 1400 °C and a p(O2) of 10−16 atm

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