Synergistic effects of Cu2O-decorated CeO2 on photocatalytic CO2 reduction: Surface Lewis acid/base and oxygen defect

Yu, Peng; Luo, Yidan; Wei, Xiaoqian; Sun, Jingfang; Li, Lulu; Zou, Weixin

doi:10.1016/j.apcatb.2019.04.093

Cited by 261 publications

(99 citation statements)

References 42 publications

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“…More recently, different FLPs on various materials to promote adsorption and activation of small gas molecules to realize heterogeneous catalysis has been reported. For example, there is interest in CeO 2 because of its different oxidized states, Ce 3+ /Ce 4+ and abundant surface defects . The Cu atoms of decorated Cu 2 O act as Lewis base to bond with C via the d electron of Cu.…”

Section: Frustrated Lewis Pairs (Flps)mentioning

confidence: 99%

“…Atomic‐level reactive sites can be introduced into photocatalysts via a range of strategies such as: introducing vacancies in the crystal lattice, doping single heterogeneous atoms, anchoring functional groups and loading metal complexes on the surface, and fabricating FLPs . With advances in characterization technologies and synthesis methods, researchers can design materials from atomic level to reveal fundamental photocatalytic CO 2 reduction from spatial‐and‐time perspectives using, for, e.g., high resolution transmission electron microscope (HRTEM), scanning transmission electron microscopy (STEM), and in situ technologies.…”

Section: Introductionmentioning

confidence: 99%

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Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Zhang

Xia

Ran

et al. 2020

Advanced Energy Materials

350

252

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Photocatalytic CO2 reduction is an effective means to generate renewable energy. It involves redox reactions, reduction of CO2 and oxidation of water, that leads to the production of solar fuel. Significant research effort has therefore been made to develop inexpensive and practically sustainable semiconductor‐based photocatalysts. The exploration of atomic‐level active sites on the surface of semiconductors can result in an improved understanding of the mechanism of CO2 photoreduction. This can be applied to the design and synthesis of efficient photocatalysts. In this review, atomic‐level reactive sites are classified into four types: vacancies, single atoms, surface functional groups, and frustrated Lewis pairs (FLPs). These different photocatalytic reactive sites are shown to have varied affinity to reactants, intermediates, and products. This changes pathways for CO2 reduction and significantly impacts catalytic activity and selectivity. The design of a photocatalyst from an atomic‐level perspective can therefore be used to maximize atomic utilization efficiency and lead to a high selectivity. The prospects for fabrication of effective photocatalysts based on an in‐depth understanding are highlighted.

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Section: Frustrated Lewis Pairs (Flps)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Zhang

Xia

Ran

et al. 2020

Advanced Energy Materials

350

252

View full text Add to dashboard Cite

show abstract

“…In addition to pristine Cu 2 O nanocrystals, different hybrid systems have also been developed in order to enhance their better charge separation and product selectivity during the photoreduction of CO 2 . 186,[207][208][209][210][211][212][213][214][215][216][217][218] A novel carbon quantum dot (CQD) decorated Cu 2 O heterostructure was synthesized via a one-pot procedure, where $5 nm CQDs were homogeneously decorated on the surface of an $2 mm spherical crystalline Cu 2 O particle. 186 This hybrid nanostructure showed strong absorption in the complete solar spectrum range with a band gap 1.96 eV, much lower than that of pure bulk Cu 2 O (2.2 eV).…”

Section: Photocatalytic Co 2 Reduction Reactionmentioning

confidence: 99%

Well-defined Cu₂O photocatalysts for solar fuels and chemicals

et al. 2021

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“…In addition, previous photocatalytic CO 2 reduction has demonstrated that a p-n heterostructure can be built between Cu 2 O and CeO 2 . [82] The Cu 2 OÀ CeO 2 heterojunction gives an extended visible light absorption and a better inhibition of electron/hole separation. Motivated by this, Mousavi-Kamazani et al reported a Cu 2 OÀ CeO 2 hetero-catalyst by a facile and onestep sonochemical method.…”

Section: Hybrid Couplingmentioning

confidence: 99%

Desulfurization through Photocatalytic Oxidation: A Critical Review

et al. 2020

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Fuel oil, the most important strategic resource, has been widely used in industrial applications. However, the sulfur‐containing compounds in fuel oil also present humanity with huge environmental issues and health concerns due to the hazardous combustion waste. To address this problem, the low vulcanization of fuel production technology has been intensively explored. Compared with traditional hydrodesulfurization technology, the newly emerged photocatalytic desulfurization has the advantages of milder operating conditions, lower energy consumption, and higher efficiency, holding great prospect to achieve deep desulfurization. Though great efforts have been made, the desulfurization catalysts still suffer from inferior light absorption, fast recombination of photocarriers, and poor structure modification. This Review summarizes recent development of photocatalytic desulfurization, including the desulfurization principle, current desulfurization challenges, and corresponding solutions. Particularly, the roles of defect engineering, hybrid coupling, and structure modifications in the enhancement of photocatalytic performance are emphasized. In addition, the photocatalytic desulfurization mechanism is also introduced with the .OH and .O2− radicals as main active species. Finally, some perspectives on the photocatalytic desulfurization are provided, which can further optimize the desulfurization efficiency and guide future photocatalyst design.

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Synergistic effects of Cu2O-decorated CeO2 on photocatalytic CO2 reduction: Surface Lewis acid/base and oxygen defect

Cited by 261 publications

References 42 publications

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Well-defined Cu₂O photocatalysts for solar fuels and chemicals

Desulfurization through Photocatalytic Oxidation: A Critical Review

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Synergistic effects of Cu2O-decorated CeO2 on photocatalytic CO2 reduction: Surface Lewis acid/base and oxygen defect

Cited by 261 publications

References 42 publications

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO2 Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO2 Reduction

Well-defined Cu2O photocatalysts for solar fuels and chemicals

Desulfurization through Photocatalytic Oxidation: A Critical Review

Contact Info

Product

Resources

About

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Well-defined Cu₂O photocatalysts for solar fuels and chemicals