Morphology control of the hematite photoanodes for photoelectrochemical water splitting

Wang, Yujie; Rong, Mingyue; Zheng, Ji‐Min; Rui, Zebao

doi:10.1016/j.ijhydene.2020.08.230

Cited by 12 publications

(7 citation statements)

References 45 publications

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“…Considering that this methodology contemplates the precipitation far from the PZC, a high concentration of precursors, a low pH, and a high ionic strength, combined with a low temperature constitutes a perfect formula for nanorod array formation [89,92,93]. Some modifications in this solution by substituting NaNO 3 with other salts to control the ionic strength in the same hydrothermal conditions tend to form other nanostructures, such as nanowires or nanocubes [94].…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

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Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production

et al. 2022

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Functional oxide materials have become crucial in the continuous development of various fields, including those for energy applications. In this aspect, the synthesis of nanomaterials for low-cost green hydrogen production represents a huge challenge that needs to be overcome to move toward the next generation of efficient systems and devices. This perspective presents a critical assessment of hydrothermal and polymeric precursor methods as potential approaches to designing photoelectrodes for future industrial implementation. The main conditions that can affect the photoanode’s physical and chemical characteristics, such as morphology, particle size, defects chemistry, dimensionality, and crystal orientation, and how they influence the photoelectrochemical performance are highlighted in this report. Strategies to tune and engineer photoelectrode and an outlook for developing efficient solar-to-hydrogen conversion using an inexpensive and stable material will also be addressed.

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Section: Hydrothermal Synthesismentioning

confidence: 99%

“…Considering that surface states influence hematite PEC performance, Wang et al studied the PEC performance of hematite nanostructured arrays in nanocubes, nanowires, and nanorods [94]. This study showed that the bandgap decreases in the sequence of nanowires, nanorods, and nanocubes.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production

et al. 2022

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“…On the contrary, morphological and structural optimization of hematite nanocrystals has proved to significantly increase the photocurrent density. [ 113 ]…”

Section: Morphologymentioning

confidence: 99%

“…Anyway, the highest photocurrent value is recorded for hematite NCs at bias above 1.3 V versus RHE. [ 113 ]…”

Section: Morphologymentioning

confidence: 99%

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Nanoscale ZnO/α‐Fe₂O₃ Heterostructures: Toward Efficient and Low‐Cost Photoanodes for Water Splitting

et al. 2021

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Composite metal oxide semiconductors are promising candidates for photoelectrochemical water splitting (PEC WS) toward environmentally friendly hydrogen production. Among them, ZnO and α‐Fe2O3 hold great potential thanks to a series of benefits, including fast charge transport in single‐crystalline structures, large surface area and tunable shapes (ZnO), and energy bandgap falling in the visible spectral range (α‐Fe2O3). However, both materials present significant drawbacks, which hinder their successful application in high‐efficiency PEC WS: the wide bandgap of ZnO limits its absorption in the UV range, while the low charge carrier mobility results in heavy recombination losses in α‐Fe2O3 during charge collection. The synthesis of ZnO/hematite composites has recently proven to be an effective approach to improve the overall WS performances. In this review, the recent developments on the application of different morphologies (0D, 1D, 2D, and 3D structures) for PEC WS are illustrated, analyzing the role of the shape and morphology in boosting the functional properties, both in single systems and in composite nanostructures. Complex networks show higher photocatalytic efficiency than the single building blocks and, consequently, composite materials exhibit higher performances. Possible paths for the development of an effective lab‐to‐fab transition based on application of ZnO/α‐Fe2O3 composite structures are also suggested.

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Plasmon Au modified 3D-nanostructrue CoOx decorated hematite for highly efficient photoelectrochemical water splitting

Lin

et al. 2021

International Journal of Hydrogen Energy

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Morphology control of the hematite photoanodes for photoelectrochemical water splitting

Cited by 12 publications

References 45 publications

Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production

Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production

Nanoscale ZnO/α‐Fe₂O₃ Heterostructures: Toward Efficient and Low‐Cost Photoanodes for Water Splitting

Plasmon Au modified 3D-nanostructrue CoOx decorated hematite for highly efficient photoelectrochemical water splitting

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Morphology control of the hematite photoanodes for photoelectrochemical water splitting

Cited by 12 publications

References 45 publications

Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production

Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production

Nanoscale ZnO/α‐Fe2O3 Heterostructures: Toward Efficient and Low‐Cost Photoanodes for Water Splitting

Plasmon Au modified 3D-nanostructrue CoOx decorated hematite for highly efficient photoelectrochemical water splitting

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Product

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About

Nanoscale ZnO/α‐Fe₂O₃ Heterostructures: Toward Efficient and Low‐Cost Photoanodes for Water Splitting