Morphological exploration of chemical vapor–deposited P-doped ZnO nanorods for efficient photoelectrochemical water splitting

Swathi, S.; Yuvakkumar, R.; Ravi, G.; Babu, E. Sunil; Velauthapillai, Dhayalan; Alharbi, Sulaiman Ali

doi:10.1016/j.ceramint.2020.10.237

Cited by 21 publications

(11 citation statements)

References 30 publications

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“…It can be concluded that doping with phosphorous increases the electrical conductivity, resulting in a higher transport of charges in the material. [ 129 ]…”

Section: Morphologymentioning

confidence: 99%

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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“…It can be concluded that doping with phosphorous increases the electrical conductivity, resulting in a higher transport of charges in the material. [ 129 ]…”

Section: Morphologymentioning

confidence: 99%

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

et al. 2021

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“…The Hg/HgCl 2 electrode was used as a reference electrode, Pt as a counter electrode, and the fabricated material as a working electrode. In this three-electrode setup, AM 1.5 G solar light (100 mW/cm 2 ) was used as a light source, and the further details are explained in our earlier report …”

Section: Experimental Sectionmentioning

confidence: 99%

“…In this three-electrode setup, AM 1.5 G solar light (100 mW/cm 2 ) was used as a light source, and the further details are explained in our earlier report. 14 ■ RESULTS AND DISCUSSION XRD diffraction of ZnO and ZnSe 1 − x O x nanorods was performed (Figure 1). The diffraction peaks at 30.7, 35.3, 46.7, and 62.0 correspond to the (100), ( 101), (102), and (103) lattice planes, respectively.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Growth of ZnSe_xO_1–x Nanorods and Their Photoelectrochemical Properties

et al. 2021

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Photoelectrochemical water splitting symbolizes an eco-friendly sustainable way for renewable hydrogen and oxygen production. Increasing the photoelectrode stability and efficiency is one of the important tasks in PEC performances. In this present work, we have successfully synthesized pure ZnO and ZnSe 1 − x O x nanorods by a chemical vapor deposition method. XRD measurements confirmed the formation of the wurtzite structure of ZnO and ZnSe 1 − x O x nanorods. All the prepared samples confirmed the formation of the nanorod structure by employing SEM studies. Notably, in particular, the photoelectrochemical (PEC) activity was studied by linear sweep voltammetry (I−V) and photoconversion efficiency (η) analysis. The experimental results showed that the ZnO/0.2Se nanorods exhibit better PEC performance due to their strong visible light absorption. The selenium (Se) composite plays a vital role in boosting their PEC performance and photoelectrode efficiency. Furthermore, the optimized photoanode of ZnO/0.2Se exhibits high efficiency, which was 2.73 times greater than that of the pure ZnO. Therefore, the ZnSe 1 − x O x nanorod is a promising alternative material for PEC applications.

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“…Intensive studies carried out on ZnO have led to the synthesis of various morphological structures from 1D to 3D Intensive studies conducted on ZnO have led to the synthesis of various morphological structures from 1D to 3D [5], leading to their use in numerous applications such as solar cells [6][7][8][9], photo-catalysis [10][11][12], photoelectrochemical (PEC) water splitting [13,14], self-cleaning surfaces [15], supercapacitor [16], sensors and biosensors [17,18]. The synthesis of ZnO is based on different manufacturing processes including sputtering [19], spray pyrolysis [20], hydrothermal [21], sol gel [22] and electrodeposition [23,24].…”

Section: Introductionmentioning

confidence: 99%

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

Nouasria

Selloum

Henni

et al. 2021

Ceramics International

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Morphological exploration of chemical vapor–deposited P-doped ZnO nanorods for efficient photoelectrochemical water splitting

Cited by 21 publications

References 30 publications

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

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

Growth of ZnSe_xO_1–x Nanorods and Their Photoelectrochemical Properties

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

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Morphological exploration of chemical vapor–deposited P-doped ZnO nanorods for efficient photoelectrochemical water splitting

Cited by 21 publications

References 30 publications

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

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

Growth of ZnSexO1–x Nanorods and Their Photoelectrochemical Properties

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

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Resources

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

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

Growth of ZnSe_xO_1–x Nanorods and Their Photoelectrochemical Properties