Electron acceptor design for 2D/2D iodinene/carbon nitride heterojunction boosting charge transfer and CO2 photoreduction

Líu, Hao; Cao, Shihai; Chen, Liang; Zhao, Kun; Wang, Chunbo; Li, Mengxin; Shen, Shigang; Wang, Wenjing; Ge, Lei

doi:10.1016/j.cej.2021.133594

Cited by 14 publications

(8 citation statements)

References 36 publications

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“…The conversion of CO 2 into value-added fuels and feedstock is increasingly attractive due to the growing urgency to advance a sustainable carbon-neutral economy [1]. Lightdriven CRR over photocatalysts is one of the most promising conversion technologies since it can proceed under relatively mild conditions, which facilitates its resource utilization [2][3][4][5][6][7][8][9][10]. In the past decades, great progress has been made.…”

Section: Introductionmentioning

confidence: 99%

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

et al. 2022

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Photocatalytic conversion of CO2 to high-value products plays a crucial role in the global pursuit of carbon–neutral economy. Junction photocatalysts, such as the isotype heterojunctions, offer an ideal paradigm to navigate the photocatalytic CO2 reduction reaction (CRR). Herein, we elucidate the behaviors of isotype heterojunctions toward photocatalytic CRR over a representative photocatalyst, g-C3N4. Impressively, the isotype heterojunctions possess a significantly higher efficiency for the spatial separation and transfer of photogenerated carriers than the single components. Along with the intrinsically outstanding stability, the isotype heterojunctions exhibit an exceptional and stable activity toward the CO2 photoreduction to CO. More importantly, by combining quantitative in situ technique with the first-principles modeling, we elucidate that the enhanced photoinduced charge dynamics promotes the production of key intermediates and thus the whole reaction kinetics.

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Section: Introductionmentioning

confidence: 99%

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

et al. 2022

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“…Especially, the arc radius of the Br-CN sample was the smallest, indicating that it has the lowest charge transfer resistance . This implies that Br-CN has more effective charge separation efficiency and faster interfacial charge transfer efficiency due to the strong electron transfer interaction between Br and Ni. Since the catalyst samples contain N vacancy defects, the unpaired electrons of N atoms remain on the N vacancy defect sites.…”

Section: Resultsmentioning

confidence: 99%

Bridging Effect of Carbon Nitride with More Negative Conduction Potential and Halogens Promotes the Liquid-Phase Oxidation of Aromatic C–H Bonds

Zhu,

Zhao,

et al. 2023

ACS Appl. Mater. Interfaces

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The selective oxidation of benzyl C−H bonds of alkyl aromatic hydrocarbons under solvent-free conditions by using heterogeneous catalysis is a challenging task. In this work, we designed a carbon nitride photocatalyst with a high charge separation efficiency and a directed charge transfer path, which was doped with Ni and Br in the carbon nitride skeleton. Br was deposited directionally onto the electron-rich Ni surface traps to form a bond with Ni, which acted as a charge transfer bridge connecting CN and Br, resulting in a bridging effect. Photogenerated electrons were transferred from Ni target to Br, and electrons were aggregated to form a directional charge transfer path, thereby enhancing the photocatalytic performance of CN. The photocatalyst was utilized for the selective oxidation of ethylbenzene at room temperature, atmospheric pressure, and solvent-free conditions. Under batch conditions simulating solar irradiation, the conversion of ethylbenzene was 43.3% and the selectivity of the product acetophenone was up to 92.0%. With the continuous flow strategy, the conversion of ethylbenzene was increased to 52.4 and 48.1%, respectively, while the selectivity reached 92.7 and 91.0%, and the reaction time was reduced from 24 to 2.1 h. The catalyst was also found to be broadly applicable for the selective oxidation of C−H bonds in the benzyl position of alkyl aromatic hydrocarbons.

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“…Graphene and a semiconductor form this heterojunction. Graphene’s high stability, great electrical conductivity, and huge specific surface area make it a promising component in photocatalytic composites. , Thermodynamically stable CO 2 molecules can be activated by oxygen vacancies on the CeO 2 surface, which speed up the reaction and lower the energy required to bring about the reduction. However, the multielectron transfer process hindering the conversion of CO 2 to hydrocarbons by the charge complicated on the CeO 2 surface must be diminished.…”

Section: Heterojunctionmentioning

confidence: 99%

Review on CeO₂-Based Photocatalysts for Photocatalytic Reduction of CO₂: Progresses and Perspectives

Cai

Jiang

et al. 2023

Energy Fuels

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A promising approach is to transform carbon dioxide (CO2) into renewable, high value-added products with minimal environmental impact and maximum efficiency. Many problems, including energy shortages and environmental degradation, are caused by high CO2 levels, but this can help. Photocatalytic reduction methods are a promising technology for solving these problems. Cerium dioxide (CeO2) is one of the most important rare earth oxides, and cerium dioxide-based photocatalysts have gained a lot of attention in recent years due to their distinctive features, such as their tunable electronic structures and their excellent photocatalytic performances. However, the wide energy band of cerium oxide limits its utilization of light. This review provides various strategies for the modification of cerium oxide, encompassing external atom doping, heterostructure fabrication, defect fabrication, and crystal plane modulation, to improve the catalytic performance of CeO2. The fundamentals of the conversion of CeO2-based photocatalysts into high value-added products are also summarized. Finally, the challenges and prospects of CeO2-based catalysts for photocatalytic reduction of CO2 are presented.

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Electron acceptor design for 2D/2D iodinene/carbon nitride heterojunction boosting charge transfer and CO2 photoreduction

Cited by 14 publications

References 36 publications

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

Bridging Effect of Carbon Nitride with More Negative Conduction Potential and Halogens Promotes the Liquid-Phase Oxidation of Aromatic C–H Bonds

Review on CeO₂-Based Photocatalysts for Photocatalytic Reduction of CO₂: Progresses and Perspectives

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Electron acceptor design for 2D/2D iodinene/carbon nitride heterojunction boosting charge transfer and CO2 photoreduction

Cited by 14 publications

References 36 publications

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

Isotype Heterojunction-Boosted CO2 Photoreduction to CO

Bridging Effect of Carbon Nitride with More Negative Conduction Potential and Halogens Promotes the Liquid-Phase Oxidation of Aromatic C–H Bonds

Review on CeO2-Based Photocatalysts for Photocatalytic Reduction of CO2: Progresses and Perspectives

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Review on CeO₂-Based Photocatalysts for Photocatalytic Reduction of CO₂: Progresses and Perspectives