Enhancement of electrochemical performance of cobalt (II) coordinated polyaniline: A combined experimental and theoretical study

Mu, Yakui; Ruan, Chaohui; Li, Pengxi; Xu, Jing; Xie, Yibing

doi:10.1016/j.electacta.2020.135881

Cited by 37 publications

(14 citation statements)

References 58 publications

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“…The EIS measurements of TiO 2 NTA electrodes are conducted for the kinetic analysis of ion diffusion and electron transfer 38–40 . The open‐circuit potential is determined at a current density of 0 according to the linear sweep voltammetry curve of TiO 2 NTA at 5 mV s −1 .…”

Section: Resultsmentioning

confidence: 99%

Photoelectrochemical performance of tubewall‐separated titanium dioxide nanotube array photoelectrode

Xie

2021

Asia-Pacific J Chem Eng

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Titanium dioxide nanotube array (TiO2 NTA) grown on titanium substrate has been fabricated as active photoelectrode for organic compound degradation. TiO2 NTA shows the tubewall‐separated nanotube arrangement and anatase crystal structure. Transient photocurrent of 1.86 mA and open‐circuit photovoltage of 0.26 V are determined to keep stable level under ultraviolet (UV) light irradiation, indicating its high photoelectrochemical activity. The cathodic polarization process causes more feasible electron transfer than the equilibrium process and anodic polarization process, which is consistent with the declining current response at an increasing positive potential. The photocatalytic activity of TiO2 NTA is fully evaluated through UV light‐induced photocatalysis and photoelectrocatalysis degradation of organic dye X‐3B as a reactant pollutant. The pseudo‐first‐order reaction rate constant is enhanced from 0.00346 min−1 for photocatalysis to 0.00521 min−1 for photoelectrocatalysis using Langmuir–Hinshelwood kinetic model of heterogeneous catalysis. The tubewall‐separated nanotube structure could induce photoelectron directional transport and provide extra interspace for reactant organic molecule diffusion at accessible surface area. The positive potential applied on TiO2 NTA could further promote photoelectron–hole pair separation. Two strategies of photoelectron generation and photoelectron–hole separation are accordingly adopted to improve its electro‐assisted photocatalytic activity. Therefore, the tubewall‐separated TiO2 NTA could present the promising photoelectrocatalysis application.

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Section: Resultsmentioning

confidence: 99%

Photoelectrochemical performance of tubewall‐separated titanium dioxide nanotube array photoelectrode

Xie

2021

Asia-Pacific J Chem Eng

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“…The adsorption of TU on the surface of CF or oxygenfunctionalized CF was investigated via density functional theory (DFT) calculations. [23][24][25] The periodic supercell of the 4 Â 4 graphene unit cells formed by 32 carbon atoms (C 32 ) was applied to simulate the interaction between TU and CF. Single hydroxyl or epoxy groups graed onto C 32 to fabricate C 32 -O and C 32 -OH were used to simulate the adsorption of TU by CF-O and CF-OH.…”

Section: Computational Model and Methodsmentioning

confidence: 99%

Electrochemical performance of activated carbon fiber with hydrogen bond-induced high sulfur/nitrogen doping

Ruan

Xie

2020

RSC Adv.

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“…Pure MnO 2 exhibits a weight loss of 2.6% from 50 to 200 • C due to water evaporation and a weight loss of 6.7% from 200 to 800 • C due to oxygen release, as MnO 2 changes to Mn 2 O 3 under heating [39,40]. Pure PANI exhibits a weight loss of 5.0% from 50 to 200 • C due to water evaporation and a weight loss of 91% from 200 to 718 • C due to organic decomposition [39,41]. The residues of pure MnO 2 and pure PANI were 90.7% and 4.0%, respectively.…”

Section: Characterizations Of Pani/mno 2 Compositementioning

confidence: 99%

Cement-Based Thermoelectric Device for Protection of Carbon Steel in Alkaline Chloride Solution

Liao

Zhang

et al. 2022

Materials

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The thermoelectric cement-based materials can convert heat into electricity; this makes them promising candidates for impressed current cathodic protection of carbon steel. However, attempts to use the thermoelectric cement-based materials for energy conversion usually results in low conversion efficiency, because of the low electrical conductivity and Seebeck coefficient. Herein, we deposited polyaniline on the surface of MnO2 and fabricated a cement-based thermoelectric device with added PANI/MnO2 composite for the protection of carbon steel in alkaline chloride solution. The nanorod structure (70~80 nm in diameter) and evenly dispersed conductive PANI provide the PANI/MnO2 composite with good electrical conductivity (1.9 ± 0.03 S/cm) and Seebeck coefficient (−7.71 × 103 ± 50 μV/K) and, thereby, increase the Seebeck coefficient of cement-based materials to −2.02 × 103 ± 40 μV/K and the electrical conductivity of cement-based materials to 0.015 ± 0.0003 S/cm. Based on this, the corrosion of the carbon steel was delayed after cathodic protection, which was demonstrated by the electrochemical experiment results, such as the increased resistance of the carbon steel surface from 5.16 × 102 Ω·cm2 to 5.14 × 104 Ω·cm2, increased charge transfer resistance from 11.4 kΩ·cm2 to 1.98 × 106 kΩ·cm2, and the decreased corrosion current density from 1.67 μA/cm2 to 0.32 μA/cm2, underlining the role of anti-corrosion of the PANI/MnO2 composite in the cathodic protection system.

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Enhancement of electrochemical performance of cobalt (II) coordinated polyaniline: A combined experimental and theoretical study

Cited by 37 publications

References 58 publications

Photoelectrochemical performance of tubewall‐separated titanium dioxide nanotube array photoelectrode

Photoelectrochemical performance of tubewall‐separated titanium dioxide nanotube array photoelectrode

Electrochemical performance of activated carbon fiber with hydrogen bond-induced high sulfur/nitrogen doping

Cement-Based Thermoelectric Device for Protection of Carbon Steel in Alkaline Chloride Solution

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