Development of a novel graphitic carbon nitride and multiwall carbon nanotube co-doped Ti/PbO2 anode for electrocatalytic degradation of acetaminophen

Chen, Shouxian; He, Ping; Zhou, Pengcheng; Wang, Xuejiao; Feng, Xiao; He, Qihang; Li, Jing; Jia, Lingpu; Zhang, Hui; Jia, Baohua; Tang, Bin

doi:10.1016/j.chemosphere.2021.129830

Cited by 47 publications

(12 citation statements)

References 59 publications

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“…EIS was further performed to understand the dynamic parameters and investigate the charge transport behavior. [38][39][40] As shown in Fig. 4d, there are no distinct semicircles in high frequency region for the Nyquist plots, and the intersections with the real axis represent the ohmic resistance of the electrode.…”

Section: Resultsmentioning

confidence: 94%

“…4d, there are no distinct semicircles in high frequency region for the Nyquist plots, and the intersections with the real axis represent the ohmic resistance of the electrode. 39,40 Obviously, the Ti/CoTiO 3 -TiO 2 catalyst with 5-layer has the smallest ohmic impedance among these electrodes. Also, the Ti/CoTiO 3 -TiO 2 electrode with 5-layer shows the largest slope compared to 10, 15-layer and Ti/TiO 2 which implies the lowest diffusion resistance in the low frequency region.…”

Section: Resultsmentioning

confidence: 99%

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Ti/CoTiO₃-TiO₂ for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Dong

Lang

Chai

et al. 2021

J. Electrochem. Soc.

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A Ti/CoTiO3-TiO2 catalyst electrode was successfully prepared by a one-step impregnation pyrolysis method and systematically investigated through scanning electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The electrochemical characterization results containing cyclic voltammetry, electrochemical impedance spectroscopy, and linear sweep voltammetry further indicate that the as-prepared Ti/CoTiO3-TiO2 has higher oxygen evolution potential, lower resistance, higher electrochemical active surface area, and a longer lifetime than that of the pristine Ti/TiO2. A variety of dyes were selected as the target degraded pollutants for evaluating the electrocatalytic performance of Ti/CoTiO3-TiO2. Compared with those of the Ti/TiO2 and other counterparts, the Ti/CoTiO3-TiO2 shows significantly higher degradation efficiency, up to 98.5% under optimal conditions. Moreover, the Ti/CoTiO3-TiO2 displays superior stability and reusability. The higher electrochemical activity of Ti/CoTiO3-TiO2 than Ti/TiO2 may be the main reason for electrocatalytic performance enhancement, and the numerous ·OH and O2 − radicals generated on the anode surface may be the primary active species for dyes degradation. In addition, the possible degradation mechanism was inferred by analyzing the measured intermediates. Consequently, this work offers a strategy via constructing titanate composites to enhance the electrocatalytic degradation performance for the refractory organic pollutants.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Ti/CoTiO₃-TiO₂ for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Dong

Lang

Chai

et al. 2021

J. Electrochem. Soc.

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“…It is well known that the higher the amount of oxygen-containing species on the surface of the electrode is the better the removal of poisonous species and, consequently, the better the system performance [101]. For GC/Ni-PbO 2 -GN, the presence of PbO 2 promotes the oxidation of the adsorbed intermediates from the electrode surface because it increases the adsorption ability of the hydroxyl ion onto the catalyst surface and help in the oxidation of the adsorbed carbonaceous intermediate species and thereby liberate the active sites of the electrode surface [73,74,[102][103][104].…”

Section: Electrochemical Analysismentioning

confidence: 99%

“…and Ni-PbO 2 ) have attracted attention as electrocatalysts for electrooxidation processes due to the easiness of their preparations, high surface areas, and improved catalytic activities and stabilities [34,[70][71][72][73][74]. Recently, PbO 2 is used as a metal oxide electrode in many electrochemical applications owing to some attractive properties.…”

Section: Introductionmentioning

confidence: 99%

Stimulation of ethylene glycol electrooxidation on electrodeposited Ni–PbO2–GN nanocomposite in alkaline medium

2022

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In this work, a novel system composed of non-precious nickel-based metal oxide/reduced graphene oxide nanocomposite (Ni–PbO2–GN) is used for electrooxidation of ethylene glycol (EG) in 1.0 M NaOH solution and compares its activity with that of Ni, Ni–GN, and Ni–PbO2. The facile electrodeposition technique is used to prepare the catalysts on glassy carbon (GC) substrates. The outcomes of electrochemical measurements show a high performance towards EG oxidation is obtained for Ni-nanocomposite electrodes compared to that of Ni mainly due to their higher surface areas. The excellent electrocatalytic properties of the Ni-nanocomposite could be ascribed to the synergistic contributions of PbO2 and graphene (GN) nano-sheets that help the reduction of Ni grains. A smaller charge transfer resistance value of 34.5 Ω cm2 for EG oxidation reaction at + 360 mV is recorded for GC/Ni–PbO2–GN compared to the other prepared electrodes. Moreover, it exhibits higher kinetic parameters of EG such as diffusion coefficient (D = 3.9 × 10–10 cm2 s−1) and charge transfer rate constant (ks = 32.5 mol−1 cm3 s−1). The overall performance and stability of the prepared catalysts towards EG electrooxidation have been estimated to be in the order of GC/Ni–PbO2–GN > GC/Ni–GN > GC/Ni–PbO2 > GC/Ni. Graphical abstract

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“…116 Tang et al have further introduced graphitic carbon nitride (GCN) and multi-wall carbon nanotube (CNT) with Ti/PbO 2 electrode, achieving high degradation efficiency of acetaminophen (83.2%) and chemical oxygen demand (COD) removal efficiency (76.3%) by effective suppression of oxygen evolution and enhancing electron transfer. 117 One of the main influences of these strategies on electrochemical performance would be reducing the microcrystal grain size, which correlated to a higher electroactive surface area, more active sites, and lower charge transfer resistance with more active oxygen species. Nevertheless, there is a risk of Pb ion leaching from the electrodes during the electrolysis, which has limited the wide use of these electrodes in industrial water treatment applications.…”

mentioning

confidence: 99%

Emerging electrocatalysts for electrochemical advanced oxidation processes (EAOPs): recent progress and perspectives

Shu

Ming

et al. 2023

Mater. Chem. Front.

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Development of a novel graphitic carbon nitride and multiwall carbon nanotube co-doped Ti/PbO2 anode for electrocatalytic degradation of acetaminophen

Cited by 47 publications

References 59 publications

Ti/CoTiO₃-TiO₂ for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Ti/CoTiO₃-TiO₂ for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Stimulation of ethylene glycol electrooxidation on electrodeposited Ni–PbO2–GN nanocomposite in alkaline medium

Emerging electrocatalysts for electrochemical advanced oxidation processes (EAOPs): recent progress and perspectives

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Development of a novel graphitic carbon nitride and multiwall carbon nanotube co-doped Ti/PbO2 anode for electrocatalytic degradation of acetaminophen

Cited by 47 publications

References 59 publications

Ti/CoTiO3-TiO2 for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Ti/CoTiO3-TiO2 for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Stimulation of ethylene glycol electrooxidation on electrodeposited Ni–PbO2–GN nanocomposite in alkaline medium

Emerging electrocatalysts for electrochemical advanced oxidation processes (EAOPs): recent progress and perspectives

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Product

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Ti/CoTiO₃-TiO₂ for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties

Ti/CoTiO₃-TiO₂ for Efficient Degradation of Refractory Organic Dyes: Synthesis, Characterization, and Electrocatalytic Properties