CdS QDs modified three-dimensional ordered hollow spherical ZnTiO3-ZnO-TiO2 composite with improved photocatalytic performance

An, Mingze; Li, Li; Wu, Qianqian; Yu, Hualiang; Gao, Xinyu; Zu, Wenlin; Guan, Jiahui; Yu, Yan

doi:10.1016/j.jallcom.2021.162638

Cited by 24 publications

(6 citation statements)

References 59 publications

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“…The results showed that a Z-scheme heterojunction was formed between the two substances through modifying CdS QDs and the spatial separation efficiency of photogenerated electron holes was increased by creating synergies between oxygen vacancies and heterojunctions, which showed good photothermal and photocatalytic properties. An et al [45] successfully prepared a 3DOH ZnTiO 3 -ZnO-TiO 2 multicomponent composite material using CdS QDs-assisted modification. The heterostructure formed greatly improved the hydrogen production efficiency (≈300 times vs TiO 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Designing advanced S‐scheme CdS QDs/La‐Bi₂WO₆ photocatalysts for efficient degradation of RhB

Ning,

Zhang,

Siqin

et al. 2023

Exploration

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Finding effective strategies to design efficient photocatalysts and decompose refractory organic compounds in wastewater is a challenging problem. Herein, by coupling element doping and constructing heterostructures, S‐scheme CdS QDs/La‐Bi2WO6 (CS/LBWO) photocatalysts are designed and synthesized by a simple hydrothermal method. As a result, the RhB degradation efficiency of the optimized 5% CS/LBWO reached 99% within 70 min of illumination with excellent stability and recyclability. CS/LBWO shows improvement in the adsorption range of visible light and promotes electron–hole pair generation/migration/separation, attributing the superior degradation performance. The degradation RhB mechanism is proposed by a free radical capture experiment, electron paramagnetic resonance, and high‐performance liquid chromatography‐mass spectrometry results, indicating that h+ and •O2– play a significant role during four degradation processes: de‐ethylation, chromophore cleavage, ring opening, and mineralization. Based on in situ irradiated X‐ray photoelectron spectroscopy, Mulliken electronegativity theory, and the work function results, the S‐scheme heterojunction of CS/LBWO promotes the transfer of photogenerated electron–hole pairs and promotes the generation of reactive radicals. This work not only reports that 5% CS/LBWO is a promising photocatalyst for degradation experiments but also provides an approach to design advanced photocatalysts by coupling element doping and constructing heterostructures.

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Section: Introductionmentioning

confidence: 99%

“…An et al. [ 45 ] successfully prepared a 3DOH ZnTiO 3 ‐ZnO‐TiO 2 multicomponent composite material using CdS QDs‐assisted modification. The heterostructure formed greatly improved the hydrogen production efficiency (≈300 times vs TiO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Designing advanced S‐scheme CdS QDs/La‐Bi₂WO₆ photocatalysts for efficient degradation of RhB

Ning,

Zhang,

Siqin

et al. 2023

Exploration

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“…Therefore, the selection of donors, acceptors, and additives with complementary advantages and compatibility is the key to enhance the photovoltaic performance parameters, such as open-circuit voltage ( V OC ), short-circuit current density ( J SC ), and fill factor (FF) . Meanwhile, a donor with lower highest occupied molecular orbital (HOMO) energy level or an acceptor with higher lowest unoccupied molecular orbital (LUMO) energy level was introduced as an additive to regulate the V OC ’s of OSCs. − In addition, the compatibility and crystallinity of the additives are critical to optimize phase separation and molecular alignment. , Accordingly, for the selection of solid additives, a combination of compatible mixing, complementary light absorption, and matched energy level should be considered to prepare high-performance OSCs.…”

Section: Introductionmentioning

confidence: 99%

Solid Additive Enables Organic Solar Cells with Efficiency up to 18.6%

Guan

Liao

Huang

et al. 2023

ACS Appl. Mater. Interfaces

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Additive strategies play a critical role in improving the performance of organic solar cells (OSCs). There are only a few reports on the application of solid additives for OSCs, which leaves a large space for further improvement of solid additives and further study on the relationship between material structure and property. PM6:BTP-eC9-based organic solar cells (OSCs) were prepared by using a small molecule BTA3 as a solid additive, and a high energy conversion efficiency of 18.65% is achieved. BTA3 has good compatibility with the acceptor component (BTP-eC9) and optimizes the morphology of the thin films. Moreover, the introduction of a small amount of BTA3 (5 wt %) effectively promotes exciton dissociation and charge transfer and suppresses charge recombination, and the relationship between the BTA3 content and the device parameter is deeply revealed. The use of BTA3 in the active layers is an attractive and effective strategy for high-performance OSCs.

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“…The unique properties of CQDs enable their applications in photocatalysis ( Murali et al, 2021 ; Syed et al, 2021 ; Yao et al, 2022 ), where photogenerated electrons and holes do the job. The UCPL of CQDs makes the use of the full spectrum of solar light possible to increase the light absorption and thus the photogenerated electrons and holes ( Wang and Hu, 2014 ; Farshbaf et al, 2018 ; An et al, 2022 ; Preethi et al, 2022 ; Saeidi et al, 2022 ; Su et al, 2022 ). The efficient photo-excited electron transfer of CQDs retard the recombination of electron-hole pairs to increase the lifetime of photogenerated electrons and holes ( Liang et al, 2021 ; Liu et al, 2021 ; Mahmood et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on Carbon Quantum Dots Based Photocatalysis

Jung

Sapner

Adhikari³

et al. 2022

Front. Chem.

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CdS QDs modified three-dimensional ordered hollow spherical ZnTiO3-ZnO-TiO2 composite with improved photocatalytic performance

Cited by 24 publications

References 59 publications

Designing advanced S‐scheme CdS QDs/La‐Bi₂WO₆ photocatalysts for efficient degradation of RhB

Designing advanced S‐scheme CdS QDs/La‐Bi₂WO₆ photocatalysts for efficient degradation of RhB

Solid Additive Enables Organic Solar Cells with Efficiency up to 18.6%

Recent Progress on Carbon Quantum Dots Based Photocatalysis

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CdS QDs modified three-dimensional ordered hollow spherical ZnTiO3-ZnO-TiO2 composite with improved photocatalytic performance

Cited by 24 publications

References 59 publications

Designing advanced S‐scheme CdS QDs/La‐Bi2WO6 photocatalysts for efficient degradation of RhB

Designing advanced S‐scheme CdS QDs/La‐Bi2WO6 photocatalysts for efficient degradation of RhB

Solid Additive Enables Organic Solar Cells with Efficiency up to 18.6%

Recent Progress on Carbon Quantum Dots Based Photocatalysis

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Product

Resources

About

Designing advanced S‐scheme CdS QDs/La‐Bi₂WO₆ photocatalysts for efficient degradation of RhB

Designing advanced S‐scheme CdS QDs/La‐Bi₂WO₆ photocatalysts for efficient degradation of RhB