Promoting the photo-induced charge separation and photoelectrocatalytic hydrogen generation: Z-scheme configuration of WO3 quantum nanodots-decorated immobilized Ti/TiO2 nanorods

Hariri, Armin; Gilani, Neda; Pasikhani, Javad Vahabzadeh

doi:10.1016/j.jallcom.2021.159528

Cited by 16 publications

(2 citation statements)

References 47 publications

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“…Since Honda and Fujishima first reported the work of photoelectrochemical (PEC) water splitting under sunlight by using TiO 2 as the photoanode in 1972, the conversion of solar energy into hydrogen by PEC systems based on semiconductor nanomaterials has aroused significant interest . Materials with excellent properties are greatly essential to solve the environmental crisis and achieve sustainable development. , Therefore, large numbers of semiconductor nanomaterials have been developed as the photoelectrode materials for PEC water cracking, especially metal oxides (TiO 2 , α-Fe 2 O 3 , WO 3 ), metal sulfides (Bi 2 S 3 , CdS), and other compounds.…”

Section: Introductionmentioning

confidence: 99%

Novel Nanostructured WO₃@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Liu

Zhang

et al. 2021

ACS Appl. Energy Mater.

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A simple hydrothermal method has been developed to prepare a WO 3 nanorod array@Prussian blue (WO 3 @PB) composite material on FTO substrates with core−shell heterogeneous structures, aiming to enhance the limited photoelectrochemical performance of semiconductor nanomaterials. Due to their enhanced absorption efficiency, faster electron transfer rate, and more appropriate gradient energy gap structure, the obtained composite materials display higher photocurrent density in comparison with pure WO 3 . A photocurrent density of 0.34 mA/cm 2 at 1.23 V vs RHE was finally obtained over a WO 3 @PB photoanode with an electrochemical deposition time of 150 s, which is 0.8 and 33 times higher than those of pure WO 3 and PB, respectively. Our work offers a promising photoelectrocatalyst for water decomposition applications and provides a way for the synthesis of environmentally friendly and low-cost photoanode materials.

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Section: Introductionmentioning

confidence: 99%

Novel Nanostructured WO₃@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Liu

Zhang

et al. 2021

ACS Appl. Energy Mater.

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“…Cr x Fe 1−x -WT photoelectrodes were placed in the anodic chamber while immersed in KOH (1 M, pH = 13.9) solution containing ethylene glycol (5 vol%) and irradiated by Xe lamp (200 mW cm −2 , and λ > 420 nm). A platinum-coated titanium mesh electrode as the cathode was inserted into an inverted burette, where H 2 was collected [27][28][29]. PEC water splitting was continued by applying a constant external potential of 1.23 V vs. RHE.…”

Section: Photoelectrochemical (Pec) Characterization and Pec Water Sp...mentioning

confidence: 99%

Photoelectrochemical Water Splitting and H2 Generation Enhancement Using an Effective Surface Modification of W-Doped TiO2 Nanotubes (WT) with Co-Deposition of Transition Metal Ions

et al. 2022

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W-doped TiO2 nanotube arrays (WT) were fabricated by in situ electrochemical anodization of titanium substrate. The results of the influence of different photo-deposited transition ions (CrxFe1−x, 0 ≤ x ≤ 1) on the surface of WT on photoelectrochemical (PEC) water splitting and H2 generation are presented. The crystallinities, structural, elemental, and absorption analysis were conducted by XRD, SEM, RAMAN, EDX, and UV–Vis absorption spectroscopy, which demonstrated anatase as the main crystalline phase of TiO2, and the existence of CrxFe1−x (nano)particles/film deposited on the surface of WT. The SEM images revealed that the deposition rate and morphology are highly related to the ratio of Cr and Fe ions. Under visible light illumination, the entire photoelectrodes showed a very good response to light with stable photocurrent density. PEC measurements revealed that the mixture of transition ions with a certain ratio of ions (Cr0.8Fe0.2–T) led to enhanced photocurrent density more than that of other modifiers due to decreasing charge recombination as well as improving the charge transfer. Moreover, PEC water splitting was conducted in an alkaline solution and the Cr0.8Fe0.2–T photoelectrode generated 0.85 mL cm‒2 h‒1 H2, which is over two times that of pristine WT.

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Recent Developments in Immobilized Photocatalyst for Hydrogen Production

Wang,

Luo,

et al. 2024

ChemCatChem

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Solar‐driven water splitting for hydrogen production has emerged as one of the most promising methods for addressing environmental and energy crises. The utilization of immobilized photocatalyst for hydrogen production has attracted significant attention in recent years due to its excellent stability, high photocatalytic efficiency, and ease of recovery and reuse. Hence, a comprehensive review of the development of immobilized photocatalyst appears exceedingly significant. Herein, we initially analyze the advantages of the immobilized photocatalytic system in aspects such as light absorption, photon utilization, and charge separation. Subsequently, we introduce various assembly techniques for immobilized photocatalyst and elaborate on some representative characteristics of this immobilized system. Furthermore, we cite the examples of the application of immobilized photocatalyst in large‐scale hydrogen production to envision its future prospects. Finally, we discuss the remaining issues in this field and outline future directions of development and challenges therein. This review holds great promise for prompting the advancement of immobilized photocatalyst in the field of photocatalysis.

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Promoting the photo-induced charge separation and photoelectrocatalytic hydrogen generation: Z-scheme configuration of WO3 quantum nanodots-decorated immobilized Ti/TiO2 nanorods

Cited by 16 publications

References 47 publications

Novel Nanostructured WO₃@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Novel Nanostructured WO₃@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Photoelectrochemical Water Splitting and H2 Generation Enhancement Using an Effective Surface Modification of W-Doped TiO2 Nanotubes (WT) with Co-Deposition of Transition Metal Ions

Recent Developments in Immobilized Photocatalyst for Hydrogen Production

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Promoting the photo-induced charge separation and photoelectrocatalytic hydrogen generation: Z-scheme configuration of WO3 quantum nanodots-decorated immobilized Ti/TiO2 nanorods

Cited by 16 publications

References 47 publications

Novel Nanostructured WO3@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Novel Nanostructured WO3@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Photoelectrochemical Water Splitting and H2 Generation Enhancement Using an Effective Surface Modification of W-Doped TiO2 Nanotubes (WT) with Co-Deposition of Transition Metal Ions

Recent Developments in Immobilized Photocatalyst for Hydrogen Production

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Product

Resources

About

Novel Nanostructured WO₃@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting

Novel Nanostructured WO₃@Prussian Blue Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting