TiO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow /> <mml:mn>2</mml:mn> </mml:msub></mml:math>, ZnO, and SnO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow /> <mml:mn>2</mml:mn> </mml:msub></mml:math>-based metal oxides for photocatalytic applications: principles and development

Ishchenko, Olga M.; Rogé, Vincent; Lamblin, Guillaume; Lenoble, D.; Fechete, Ioana

doi:10.5802/crchim.64

Cited by 9 publications

(2 citation statements)

References 116 publications

(138 reference statements)

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“…The photocatalytic degradation of dyes requires semiconductor materials and processing in the presence of light [ 5 ]. There are several materials that can be employed as photocatalysts, including titanium dioxide (TiO 2 ), tin oxide (SnO 2 ), and zinc oxide (ZnO) [ 6 ]. These popular materials are often studied for their photocatalytic properties due to their wide bandgap energy (E g ) and high surface area resulting in efficient light absorption and enhanced catalytic activity, respectively.…”

Section: Introductionmentioning

confidence: 99%

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Krobthong

Rungsawang

Wongrerkdee

2023

Toxics

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ZnO nanoparticles (NPs) were comparatively synthesized via precipitation and combustion techniques. The ZnO NPs synthesized via precipitation and combustion exhibited similar polycrystalline hexagonal wurtzite structures. The large crystal sizes of ZnO NPs were obtained from the ZnO precipitation in comparison with those from the ZnO combustion, while the particle sizes were in the same range. The functional analysis implied that the ZnO structures had surface defects. Moreover, absorbance measurement showed the same absorbance range in ultraviolet light. In the photocatalytic degradation of methylene blue, ZnO precipitation exhibited higher degradation performance than ZnO combustion. This was attributed to the larger crystal sizes of ZnO NPs, which provided an enduring carrier movement at semiconductor surfaces and reduced electron-hole recombination. Thus, the crystallinity of ZnO NPs can be considered an important factor in photocatalytic activity. Furthermore, precipitation is an interesting synthesizing method for preparing ZnO NPs with large crystal sizes.

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Section: Introductionmentioning

confidence: 99%

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Krobthong

Rungsawang

Wongrerkdee

2023

Toxics

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“…Numerous semiconductors have been investigated for use as photocatalysts, including metal oxides such as ZnO, TiO 2 , and Co 3 O 4 [12][13][14]. However, a single metal oxide photocatalyst displays a rather poor photocatalytic capability in general owing to its confined solar light absorption and urgent issues of charge carrier recombination caused by poor electron and hole separation capability [15].…”

Section: Introductionmentioning

confidence: 99%

A Novel ZnO/Co3O4 Nanoparticle for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

Tien

Chen

2023

Catalysts

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In recent years, ZnO/Co3O4 nanoparticles (NPs) have been reflected as typical of the most promising photocatalysts utilized in the field of photocatalysis for potentially solving energy shortages and environmental remediation. In this work, a novel ZnO/Co3O4 NP photocatalyst was fabricated and utilized for photocatalytic hydrogen evolution with visible light activity. ZnO/Co3O4 NPs display an improved photocatalytic hydrogen production rate of 3963 μmol/g through a five-hour test under visible light activity. This is much better than their single components. Hence, bare ZnO NPs loaded with 20 wt% Co3O4 NPs present optimum efficiency of hydrogen evolution (793.2 μmol/g/h) with 10 vol% triethanolamine (TEOA), which is 11.8 times that of pristine ZnO NPs. An achievable mechanism for improved photocatalysis is endowed in terms of the composite that promotes the operative separation rate of charge carriers that are produced by visible light irradiation. This study yields a potential process for the future, proposing economical, high-function nanocomposites for hydrogen evolution with visible light activity.

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Recent Progress on Cross‐Linkable Fullerene‐Based Electron Transport Materials for Perovskite Solar Cells

Zhou,

Luo,

Wang

et al. 2024

ChemSusChem

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Fullerene‐based derivatives are frequently used as electron transport materials (ETMs) and interface buffers for perovskite solar cells (PSCs) due to their excellent properties, including high electron affinity and mobility, low recombination energy, tunable energy levels, and solution processability. However, significant challenges arise because fullerene derivatives tend to aggregate and dimerize, which reduces exciton dissociation and charge transport capacity. Additionally, their chemical compatibility with perovskite absorbers facilitates halide diffusion and degradation of PSCs. This overlap causes delamination and dissolution during device fabrication, hindering the performance enhancement of fullerene‐based PSCs. To address these issues, researchers have developed cross‐linkable fullerene materials. These materials have been shown to not only significantly improve the power conversion efficiency (PCE) of PSCs but also effectively enhance the device stability. In this review, we summarized recent research progress on cross‐linkable fullerene derivatives as ETMs for PSCs. We systematically analyze the impact of these cross‐linked ETMs on device performance and long‐term stability, focusing on their molecular structures and working mechanisms. Finally, we discuss the future challenges that need to be overcome to advance the application of cross‐linkable fullerene materials in PSCs.

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TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Cited by 9 publications

References 116 publications

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

A Novel ZnO/Co3O4 Nanoparticle for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation

Recent Progress on Cross‐Linkable Fullerene‐Based Electron Transport Materials for Perovskite Solar Cells

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