Graphene-supported TiO2: study of promotion of charge carrier in photocatalytic water splitting and methylene blue dye degradation

Singh, Neha; Jana, Soumita; Singh, Gajendra Prasad; Dey, R. K.

doi:10.1007/s42114-020-00140-w

Cited by 88 publications

(22 citation statements)

References 46 publications

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“…The reduction in the emission intensity of CuO/rGO/TiO 2 compared to those of TiO 2 and rGO/TiO 2 confirms the main role of rGO in lowering the electron–hole pair recombination, owing to the fast charge transport capacity of the rGO network. 72…”

Section: Resultsmentioning

confidence: 99%

An efficient CuO/rGO/TiO₂photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

2022

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Section: Resultsmentioning

confidence: 99%

An efficient CuO/rGO/TiO₂photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

2022

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“…[18][19][20][21][22][23][24][25] Among all hydrogen (H 2 ) energy technologies, electrocatalytic splitting of water including oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is considered to be an effective one to prepare the clean energy. [26][27][28][29][30][31][32] During the process, the large-scaled catalysts play a significantly important role. However, there is a challenge to prepare the electrocatalysts having high property as well as good consistency for OER and HER processes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Three dimensional Mo-Doped Nickel Sulfide Mesoporous Nanostructures/Ni Foam Composite for Supercapacitor and Overall Water Splitting

Li¹,

Fan²,

Li³

et al. 2022

ES Energy Environ.

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Three dimensional (3D) Mo-doped nickel sulfide (Ni 3 S 2 ) mesoporous nanostructures on Ni foam were successfully synthesized via the solvothermal method, which showed the superior properties for energy storage and conversion. As an electrode for supercapacitor, 3D Mo-doped Ni 3 S 2 mesoporous nanostructures demonstrated a 604.4 μAh cm -2 specific capacity and good cycling stability. Furthermore, Mo-doped Ni 3 S 2 mesoporous nanostructures exhibited superior hydrogen evolution reaction and oxygen evolution reaction properties and good cycle stability for water splitting. At 1.41 V, the electrolyzer made up of Mo-doped Ni 3 S 2 mesoporous nanostructures reached the 10mA cm -2 catalytic current density, demonstrating outstanding long-term durability. Furthermore, the physical characterization results and mechanism of the 3D Mo-doped Ni 3 S 2 were investigated. Therefore, the study presents the great promise of the 3D Mo-doped Ni 3 S 2 mesoporous nanostructures in energy conversion and storage.

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“…In an electrochemical and photo‐electrochemical water splitting reaction [ 1–7 ] for hydrogen production, [ 2,8–13 ] improving a non‐noble metal catalyst's stability and durability through various strategies such as utilizing single‐atom catalyst, atomic thin layer formation, and coating method is an attractive field. [ 14 ] The anodic oxygen evolution reaction (OER) catalyst activity and stability are not appreciable in water splitting reactors than the cathodic hydrogen evolution reaction (HER), specifically using the non‐noble metal‐based catalysts such as Co and Ni‐based materials.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Oxygen Evolution Reaction on Hydrogen Embrittled CoSe Surface

Karthik

Rajan

Jothi

et al. 2021

Adv Materials Inter

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In the design of structurally competent electrodes with prolonged lifecycles, a solid understanding of the gaseous hydrogen interaction in a metal lattice is highly desirable. During hydrogen evolution reaction, ingress of H severely affects the physical and mechanical properties of the material causing catastrophic brittle failures (hydrogen embrittlement). In this work, by chronoamperometry technique, an electrode with CoSe catalyst system is intentionally diffused with H to serve as a hydrogen stressed CoSe electrode. Surprisingly this H‐embrittled CoSe electrode exhibits enhanced oxygen evolution reaction (OER) behavior as confirmed by linear sweep voltammetry (LSV), impedance, and Tafel analysis, a cathodic shift of 80 mV at the current density of 10 mA cm−2, impedance analysis reveals half the time of Rct decreasing in the OER on H‐embrittled CoSe than pristine CoSe. The Tafel slope of the H‐embrittled CoSe exhibits of 30 mV, which is relatively lower than the pristine CoSe at OER condition. These results collectively support the enhanced activity of the H‐embrittled CoSe electrode towards OER. Diffusion of hydrogen into metal lattice is confirmed by the high‐resolution transmission electron microscopy (HR‐TEM) fringes analysis, where a 22% decrease Q2 in the lattice distance is revealed by the H‐embrittled CoSe catalyst.

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Graphene-supported TiO2: study of promotion of charge carrier in photocatalytic water splitting and methylene blue dye degradation

Cited by 88 publications

References 46 publications

An efficient CuO/rGO/TiO₂photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

An efficient CuO/rGO/TiO₂photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

Synthesis of Three dimensional Mo-Doped Nickel Sulfide Mesoporous Nanostructures/Ni Foam Composite for Supercapacitor and Overall Water Splitting

Enhanced Electrochemical Oxygen Evolution Reaction on Hydrogen Embrittled CoSe Surface

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Graphene-supported TiO2: study of promotion of charge carrier in photocatalytic water splitting and methylene blue dye degradation

Cited by 88 publications

References 46 publications

An efficient CuO/rGO/TiO2photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

An efficient CuO/rGO/TiO2photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

Synthesis of Three dimensional Mo-Doped Nickel Sulfide Mesoporous Nanostructures/Ni Foam Composite for Supercapacitor and Overall Water Splitting

Enhanced Electrochemical Oxygen Evolution Reaction on Hydrogen Embrittled CoSe Surface

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An efficient CuO/rGO/TiO₂photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

An efficient CuO/rGO/TiO₂photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation