High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr<sub>3</sub> perovskite supported by hierarchical TiO<sub>2</sub> nanoflakes

Yi, Jiayu; Ke, Sunzai; Lu, Suwei; Weng, Bo; Shen, Lijuan; Yang, Xuhui; Xue, Hun; Yang, Min-Quan; Qian, Qingrong

doi:10.1039/d3nr03282e

Cited by 11 publications

(2 citation statements)

References 64 publications

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“…The application of perovskite in this case CsPbBr 3 was again explored this time by Yi et al, 72 with support over a hierarchical TiO 2 nanoflake. The photocatalytic system applied acetonitrile as the solvent and visible light with a cutoff at 420 nm and 300 W of power.…”

Section: Photocatalysismentioning

confidence: 99%

Toluene Oxidation: CO₂ vs Benzaldehyde: Current Status and Future Perspectives

Lapa,

Martins

2024

ACS Omega

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Toluene is a common and significant volatile organic compound (VOC). Although it finds extensive application in various industrial processes (chemical manufacturing, paint and adhesive production, and as a solvent), it creates a huge environmental impact when emitted freely into the atmosphere. Two solutions were found to mitigate the emission of this pollutant: the total oxidation to CO 2 and H 2 O and the selective oxidation into benzaldehyde. This review discusses the two main alternatives for tackling this problem: converting the toluene into carbon dioxide by total oxidation or into benzaldehyde by selective oxidation. It presents new catalytic advances, new trends, and the advantages and disadvantages of both methods.

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Section: Photocatalysismentioning

confidence: 99%

Toluene Oxidation: CO₂ vs Benzaldehyde: Current Status and Future Perspectives

Lapa,

Martins

2024

ACS Omega

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“…Most recently, Yi et al developed hierarchical CsPbBr 3 /TiO 2 heterostructures by assembling CsPbBr 3 NPs onto a nanoflower-shaped TiO 2 , which allowed for an intimate interfacial contact between CsPbBr 3 NPs and TiO 2 that greatly enhanced the toluene photocatalytic oxidation conversion [ 128 ]. This hierarchical heterojunction not only benefited from efficient charge separation due to its type-II band alignment but also offered a large surface area, allowed for increased absorption of light due to refraction and scattering, and enhanced toluene adsorption.…”

Section: Benzaldehyde Formation From Oxidation Of Benzyl Alcohol and ...mentioning

confidence: 99%

Photocatalysis Based on Metal Halide Perovskites for Organic Chemical Transformations

Jagadeeswararao,

Galian,

Pérez-Prieto

2023

Nanomaterials

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Heterogeneous photocatalysts incorporating metal halide perovskites (MHPs) have garnered significant attention due to their remarkable attributes: strong visible-light absorption, tuneable band energy levels, rapid charge transfer, and defect tolerance. Additionally, the promising optical and electronic properties of MHP nanocrystals can be harnessed for photocatalytic applications through controlled crystal structure engineering, involving composition tuning via metal ion and halide ion variations, dimensional tuning, and surface chemistry modifications. Combination of perovskites with other materials can improve the photoinduced charge separation and charge transfer, building heterostructures with different band alignments, such as type-II, Z-scheme, and Schottky heterojunctions, which can fine-tune redox potentials of the perovskite for photocatalytic organic reactions. This review delves into the activation of organic molecules through charge and energy transfer mechanisms. The review further investigates the impact of crystal engineering on photocatalytic activity, spanning a diverse array of organic transformations, such as C–X bond formation (X = C, N, and O), [2 + 2] and [4 + 2] cycloadditions, substrate isomerization, and asymmetric catalysis. This study provides insights to propel the advancement of metal halide perovskite-based photocatalysts, thereby fostering innovation in organic chemical transformations.

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Customized Ultrathin Oxygen Vacancy‐Rich Bi₂W_0.2Mo_0.8O₆ Nanosheets Enabling a Stepwise Charge Separation Relay and Exposure of Lewis Acid Sites toward Broad‐Spectrum Photothermal Catalysis

Yi,

Yang,

Shen

et al. 2024

Small

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Designing robust photocatalysts with broad light absorption, effective charge separation, and sufficient reactive sites is critical for achieving efficient solar energy conversion. However, realizing these aims simultaneously through a single material modulation approach poses a challenge. Here, a 2D ultrathin oxygen vacancy (Ov)‐rich Bi2W0.2Mo0.8O6 solid solution photocatalyst is designed and fabricated to tackle the dilemma through component and structure optimization. Specifically, the construction of a solid solution with ultrathin structure initially facilitates the separation of photoinduced electron–hole pairs, while the introduction of Ov strengthens such separation. In the meantime, the presence of Ov extends light absorption to the NIR region, triggering a photothermal effect that further enhances the charge separation and accelerates the redox reaction. As such, photoinduced charge carriers in the Ov‐Bi2W0.2Mo0.8O6 are separated step by step via the synergistic action of 2D solid solution, OV, and solar heating. Furthermore, the introduction of OV exposes surface metal sites that serve as reactive Lewis acid sites, promoting the adsorption and activation of toluene. Consequently, the designed Ov‐Bi2W0.2Mo0.8O6 reveals an enhanced photothermal catalytic toluene oxidation rate of 2445 µmol g−1 h−1 under a wide spectrum without extra heat input. The performance is 9.0 and 3.9 times that of Bi2WO6 and Bi2MoO6 nanosheets, respectively.

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High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr₃ perovskite supported by hierarchical TiO₂ nanoflakes

Abstract: Photocatalytic oxidation of toluene to valuable fine chemicals is of great significance, yet challenged in the development of advanced catalysts with both high activity and selectivity for the activation of...

Cited by 11 publications

References 64 publications

Toluene Oxidation: CO₂ vs Benzaldehyde: Current Status and Future Perspectives

Toluene Oxidation: CO₂ vs Benzaldehyde: Current Status and Future Perspectives

Photocatalysis Based on Metal Halide Perovskites for Organic Chemical Transformations

Customized Ultrathin Oxygen Vacancy‐Rich Bi₂W_0.2Mo_0.8O₆ Nanosheets Enabling a Stepwise Charge Separation Relay and Exposure of Lewis Acid Sites toward Broad‐Spectrum Photothermal Catalysis

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High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr3 perovskite supported by hierarchical TiO2 nanoflakes

Abstract: Photocatalytic oxidation of toluene to valuable fine chemicals is of great significance, yet challenged in the development of advanced catalysts with both high activity and selectivity for the activation of...

Cited by 11 publications

References 64 publications

Toluene Oxidation: CO2 vs Benzaldehyde: Current Status and Future Perspectives

Toluene Oxidation: CO2 vs Benzaldehyde: Current Status and Future Perspectives

Photocatalysis Based on Metal Halide Perovskites for Organic Chemical Transformations

Customized Ultrathin Oxygen Vacancy‐Rich Bi2W0.2Mo0.8O6 Nanosheets Enabling a Stepwise Charge Separation Relay and Exposure of Lewis Acid Sites toward Broad‐Spectrum Photothermal Catalysis

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Product

Resources

About

High-efficiency visible-light-driven oxidation of primary C–H bonds in toluene over a CsPbBr₃ perovskite supported by hierarchical TiO₂ nanoflakes

Toluene Oxidation: CO₂ vs Benzaldehyde: Current Status and Future Perspectives

Toluene Oxidation: CO₂ vs Benzaldehyde: Current Status and Future Perspectives

Customized Ultrathin Oxygen Vacancy‐Rich Bi₂W_0.2Mo_0.8O₆ Nanosheets Enabling a Stepwise Charge Separation Relay and Exposure of Lewis Acid Sites toward Broad‐Spectrum Photothermal Catalysis