Electrodeposited thiophene-containing organic small molecule-modified ITO electrode with highly efficient photoelectric conversion and photoelectrochemical oxygen reduction

Zhang, Chenxing; Yang, Tong; Yin, Hengfu; Gao, Lihua; Wang, Kezhi

doi:10.1016/j.electacta.2020.137150

Cited by 5 publications

(3 citation statements)

References 69 publications

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“…Indium tin oxide (ITO) has good electrical conductivity and a smooth, flat surface, which provides good original conditions for repeated experiments on metal ion electrodeposition. , The SEM image and energy-dispersive spectrometry (EDS) analysis results of the ITO surface morphology used in this study are shown in Figure . It is necessary to ensure that the ITO surface is clean before being used.…”

Section: Methodsmentioning

confidence: 99%

Influence of Pre-Adsorbed TiO₂ Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Liu

Jaber

et al. 2022

J. Phys. Chem. C

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Electrodeposition holds excellent potential for creating controllable nanoscale functional interfaces. However, the key characteristics of these processes remain elusive, especially the composite electrodeposition processes involving inert nanoparticles. Herein, the pre-adsorption of inert particles is considered in detail in electro-codeposition. The nucleation and growth mechanism of nickel nanoparticles under the influence of preadsorbed inert particles is studied in a choline chloride−ethylene glycol deep eutectic solvent (DES). Cyclic voltammetry results show that pre-adsorbed TiO 2 particles can significantly increase the cathodic reduction current, while codeposited TiO 2 particles hinder the reduction process. Chronoamperometry analysis demonstrates that pure Ni electrodeposition in a DES follows the mechanism of instantaneous nucleation and tridimensional growth at a high potential, while the Ni electrodeposition deviated from the instantaneous nucleation model due to the pre-adsorption of TiO 2 particles. Moreover, considering the classical model description of multiphase 3D nucleation and diffusion-controlled growth, the typical kinetic parameters such as nucleation rate constant and diffusion coefficient were investigated under different applied potentials. It was found that the nucleation rate constant of Ni electrodeposition increased significantly in the presence of pre-adsorbed TiO 2 particles. These findings are of great significance for understanding and perfecting the electro-codeposition process containing inert nanoparticles.

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Section: Methodsmentioning

confidence: 99%

Influence of Pre-Adsorbed TiO₂ Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Liu

Jaber

et al. 2022

J. Phys. Chem. C

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“…In addition, it was reported that an increase in π-conjugation could extend the absorption band into the visible region, which could also promote the separation of photo-generated charges, contributing to enhanced photo(electro)catalytic performance [ 21 , 22 ]. The thiophene group has attracted much attention for introduction into Ru(II) polypyridyl complexes [ 23 , 24 ] due to its enhanced light absorption, good electronic conductivity and charge transport properties [ 25 , 26 , 27 , 28 , 29 , 30 ], but thiophene group-grafted tricarbonyl Re complexes have not received enough attention [ 16 , 31 ]. Wang et al reported a tricarbonyl Re complex with thiophene-substituted imidazole [4,5- f ]-1,10-phenanthroline ligand, and density functional theory calculation showed that the complex should possess good hole-transfer ability [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic Dioxygen Reduction Based on a Novel Thiophene-Functionalized Tricarbonylchloro(1,10-phenanthroline)rhenium(I)

Wang

2023

Molecules

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A novel Re (I) complex of [Re(CO)3Cl(L)], {L = 2-([2,2’-bithiophen]-5-yl)-1-phenyl-1H-imidazo [4,5-f][1,10]phenanthroline}, was synthesized, and its optical (UV–Visible absorption and emission spectroscopy), cyclovoltammetric and photoelectrochemical oxygen reduction properties were studied. The geometric and electronic properties were also investigated by density functional theory calculations. It was found that the ITO electrode coated with drop-casted [Re(CO)3Cl(L)] film exhibited cathodic photocurrent generation characteristics. The illuminated film exhibited a maximum cathodic photocurrent up to 30.4 μA/cm2 with an illumination intensity of 100 mW/cm2 white light at a bias potential of −0.4 V vs. SCE in O2-saturated electrolyte solution, which was reduced by 5.1-fold when thoroughly deoxygenated electrolyte solution was used, signaling that the electrode performed well on the photoelectrochemical oxygen reduction. The photo-electrocatalytic hydrogen peroxide production was proved with a maximum H2O2 concentration of 6.39 μM during 5 h of the photoelectrocatalytic process. This work would guide the construction of more efficient rhenium-based photo(electro)catalytic molecular systems for O2 sensing, hydrogen peroxide production and other types of photoelectrochemical energy conversion and storage.

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“…In photoelectrochemical water splitting, the commercial viability of the route is currently limited because of the low efficiency and/or poor stability of the photoelectrodes, which have traditionally been composed of inorganic semiconductors such as TiO 2 , ZnO, WO 3 , Fe 2 O 3 and CdS [ 4 , 5 ]. With respect to the photoelectrochemical oxygen reduction reaction, it has typically been studied using thiophene-derived polymers and immobilized photosensitizers such as phthalocyanines, but some issues about photocurrent stabilities have been reported [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical Stability under Anodic and Cathodic Conditions of Meso-Tetra-(4-Sulfonatophenyl)-Porphyrinato Cobalt (II) Immobilized in Polypyrrole Thin Films

et al. 2021

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Cobalt porphyrins have emerged as promising catalysts for electrochemical and photoelectrochemical applications because of their good performance, low cost and the abundance of cobalt in the earth. Herein, a negatively charged porphyrin meso-tetra-(4-sulfonatophenyl)-porphin (TPPS) was immobilized in polypyrrole (PPy) during the electro-polymerization, and then it was metallized with cobalt to obtain meso-tetra-(4-sulfonatophenyl)-porphyrinato cobalt (II) (CoTPPS) as a dopant in PPy. The coatings were evaluated as photoelectrodes towards thiosulfate oxidation and oxygen reduction. For comparison purposes, the photoelectrochemical behavior of ClO4−-doped polypyrrole films was also evaluated. Characterizations by chronoamperometry, UV-Vis spectroscopy and Raman spectroscopy showed that polypyrrole is stable under anodic and cathodic conditions, but CoTPPS and TPPS immobilized in PPy are degraded during the anodic process. Thus, decreases in photocurrent of up to 87% and 97% for CoTPPS-doped PPy and TPPS-doped PPy were observed after a 30-min chronoamperometry test. On the other hand, good stability of CoTPPS and TPPS immobilized in PPy was observed during photoelectrochemical oxygen reduction, which was reflected in almost constant photocurrents obtained by chronoamperometry. These findings are relevant to understanding the role of CoTPPS as a catalyst or pre-catalyst in photoelectrochemical applications such as water splitting. In addition, these results could pave the way for further research to include CoTPPS-doped PPy in the design of novel photocathodes.

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Electrodeposited thiophene-containing organic small molecule-modified ITO electrode with highly efficient photoelectric conversion and photoelectrochemical oxygen reduction

Cited by 5 publications

References 69 publications

Influence of Pre-Adsorbed TiO₂ Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Influence of Pre-Adsorbed TiO₂ Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Photoelectrocatalytic Dioxygen Reduction Based on a Novel Thiophene-Functionalized Tricarbonylchloro(1,10-phenanthroline)rhenium(I)

Photoelectrochemical Stability under Anodic and Cathodic Conditions of Meso-Tetra-(4-Sulfonatophenyl)-Porphyrinato Cobalt (II) Immobilized in Polypyrrole Thin Films

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Electrodeposited thiophene-containing organic small molecule-modified ITO electrode with highly efficient photoelectric conversion and photoelectrochemical oxygen reduction

Cited by 5 publications

References 69 publications

Influence of Pre-Adsorbed TiO2 Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Influence of Pre-Adsorbed TiO2 Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Photoelectrocatalytic Dioxygen Reduction Based on a Novel Thiophene-Functionalized Tricarbonylchloro(1,10-phenanthroline)rhenium(I)

Photoelectrochemical Stability under Anodic and Cathodic Conditions of Meso-Tetra-(4-Sulfonatophenyl)-Porphyrinato Cobalt (II) Immobilized in Polypyrrole Thin Films

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Influence of Pre-Adsorbed TiO₂ Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition

Influence of Pre-Adsorbed TiO₂ Particles on the Nucleation and Growth Mechanism of Ni in Deep Eutectic Solvent Electro-Codeposition