Dioxygen-enhanced CO2 photoreduction on TiO2 supported Cu single-atom sites

Wang, Ting; Sun, Fu-li; Liu, Shoujie; Zhuang, Gui‐Lin; Li, Benxia

doi:10.1016/j.apcatb.2022.122339

Cited by 33 publications

(14 citation statements)

References 61 publications

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“…Thus, Wang et al reported a porous TiO 2 -supported Cu SAS photocatalyst and investigated the property of O 2 -enhanced Cu-SAs/TiO 2 . 109 Shown in Figure 10a is a synthesis of the Cu-SAs/TiO 2 . 109 The uniform distribution of Cu on TiO 2 (Cu-SAs/TiO 2 ) was confirmed by the aberration-corrected high-angle annular dark field scanning transmission electron microscopy (STEM).…”

Section: Photocatalytic Co 2 Reduction To Comentioning

confidence: 99%

“…The photoinduction of Cu-SAs/TiO 2 chemical states under different Combined with in-situ EPR and in-situ CO−DRIFTS characterization, it was proved that the Cu δ+ site could be stabilized in the presence of O 2 , and Cu δ+ determined the activity and selectivity of the photocatalytic CO 2 reduction reaction. 109 Zhang et al designed a Cu single atom to construct an S-type heterojunction (Cu-TiO 2 /WO 3 ) with a high yield of CH 4 . Experimental and theoretical calculations show that the S-type heterojunction accelerates the charge migration rate and inhibits the recombination of e − -h + pairs.…”

Section: Photocatalytic Co 2 Reduction To Comentioning

confidence: 99%

“…Unfortunately, single-atom Cu usually reduces Cu δ+ to Cu 0 during photocatalysis, which brings problems such as poor catalyst stability and uncontrollable product selectivity. Thus, Wang et al reported a porous TiO 2 -supported Cu SAS photocatalyst and investigated the property of O 2 -enhanced Cu-SAs/TiO 2 . Shown in Figure a is a synthesis of the Cu-SAs/TiO 2 .…”

Section: Photochemical and Photothermal Conversion Of Co2mentioning

confidence: 99%

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Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO₂ with Single-Atom Catalysts

Yang,

Wang,

Kuwahara

et al. 2024

Chem Bio Eng.

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Catalytic conversion of carbon dioxide (CO 2 ) into useful chemical raw materials or fuels can help achieve the "dual carbon" goals of carbon peaking and carbon neutrality. As a sustainable green energy source, solar energy provides energy for human production and life. In recent years, the reported single-atom catalysts (SACs) have higher atom utilization and better catalytic efficiency than traditional heterogeneous catalysts. In the field of photocatalysis and photothermal synergistic catalysis of CO 2 conversion, single-atom catalysts can reduce the reaction temperature and pressure, improve the catalytic activity, and improve the selectivity of the reaction. In this mini-review, the basic mechanism and classification of CO 2 reduction are introduced, and then the roles and differences of single-atom catalysts in photocatalysis and photothermal catalysis are introduced. In addition, according to the reduction product types, the recent research progress of single-atom catalysts in photoconversion and photothermal CO 2 conversion was reviewed. Finally, the challenges of monoatomic photocatalytic and photothermal CO 2 reduction technologies have prospected. This mini-review hopes to provide an in-depth understanding of the roles of single atoms in photocatalysis and photothermal catalysis and to shed light on the actual production and application of renewable energy. High-performance single-atom catalysts are expected to achieve industrial applications of CO 2 conversion, which will contribute to the early realization of the two-carbon goal.

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Section: Photocatalytic Co 2 Reduction To Comentioning

confidence: 99%

Section: Photocatalytic Co 2 Reduction To Comentioning

confidence: 99%

Section: Photochemical and Photothermal Conversion Of Co2mentioning

confidence: 99%

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Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO₂ with Single-Atom Catalysts

Yang,

Wang,

Kuwahara

et al. 2024

Chem Bio Eng.

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“…Oxygen vacancies can also regulate the energy band structure of the perovskite and improve the utilization of visible light. Wang et al 26 formed Vo by binding to Cu monoatoms on TiO 2 . The presence of Vo improved the band gap structure of TiO 2 and the visible light absorption of the photocatalyst, and Vo also promoted the activation and deionization of CO 2 on the catalyst surface.…”

Section: Introducitonmentioning

confidence: 99%

Intentionally Introducing Oxygen Vacancies and Ti³⁺ Defects on the Surface of Bi₄Ti₃O₁₂ Nanosheets for Promoting the Photoreduction of CO₂ to CH₃OH

Wang,

Qiu,

Xie

et al. 2024

ACS Appl. Nano Mater.

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Using perovskite photocatalytic reduction of CO 2 and H 2 O to produce hydrocarbon fuels offers an attractive method to solve the energy crisis and the greenhouse effect. Bi 4 Ti 3 O 12 (BTO) has received much attention in the field of photocatalysis due to its unique layered structure, but it still faces many challenges such as weak photoresponse and severe photogenerated carrier recombination. In this paper, Bi 4 Ti 3 O 12 nanosheets with different concentrations of surface oxygen vacancies (V O ) and Ti 3+ defect were prepared by the molten salt method and NaBH 4 hightemperature reduction method (HBTO). Surface defects formed obvious carrier traps on the HBTO surface, reduced the recombination rate of photogenerated electrons and holes, and adjusted the band gap structure (from 3.09 to 2.62 eV), which improved the visible light utilization of HBTO. The decrease of photoinduced carrier recombination rate and the improvement of visible light response significantly enhanced the photocatalytic CO 2 reduction activity of HBTO under visible light. The CH 3 OH yield with the optimized HBTO-4 (NaBH 4 :Bi 4 Ti 3 O 12 = 1:5) was 4.90 μmol•g −1 •h −1 , which was about 3.5 times that of the original BTO. Meanwhile, the band gap structure, electronic density of states (DOS), and work function were calculated by the density functional theory (DFT). This study provided an effective strategy for designing and preparing perovskite photocatalysts rich in surface defects for the efficient conversion of solar energy. KEYWORDS: Bi 4 Ti 3 O 12 , photocatalytic CO 2 reduction, oxygen vacancy, Ti 3+ defects, CH 3 OH

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“…Single-atom catalysts have tremendous potential for use in catalytic applications because they maximize the atom-utilization efficiency and display new photoelectric properties. , The single metal atoms bestow superior photocatalytic efficacy by increasing the light response range via sensitization, decreasing the electron transfer distance via homogenized atomic metal species, and speeding up the transfer dynamics of carriers to the highly active spots via carrier delocalization effects. − Ran et al designed and fabricated single-atom active sites on COFs for boosting CO 2 photoreduction, which achieved an impressive CO generation rate with ca. 97% selectivity .…”

Section: Introductionmentioning

confidence: 99%

Au Nanoparticle-Anchored Hollow Nanospheres of a Single-Atomized Porphyrin-Covalent Organic Framework Hybrid for Boosting Photoreduction of CO₂ under Solar Irradiation

et al. 2023

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Recent decades have seen a surge of interest in the photoreduction of carbon dioxide to fuels, and significant efforts have been made to develop efficient visible-light-driven photocatalysts. Nonetheless, efficient conversion of CO2 with selectivity has proven to be a persistent challenge. Here, a hybrid plasmonic covalent organic framework (COF) is developed by combining a hollow porphyrin-based COF with a cobalt (Co) single atom decorated with plasmonic Au nanoparticles (COF-366-Co(H)/Au) to greatly enhance photoreduction of CO2. The photocatalytic redox processes in this hybrid system are driven toward generation of CO by the plasmon-induced energetic electron transfer, improved light harvesting, and efficient surface reactions. The COF-366-Co(H)/Au shows excellent activity, producing CO at a rate of up to 1200 μmol g–1 h–1 with a selectivity of ca. 98%. The COF-366-Co(H)/Au exhibits an AQY of 0.5% at 420 nm, which is one of the notable values reported in the literature. This approach demonstrates the use of hollow COFs in tandem with single-atom and plasmonic nanoparticles toward solar-to-fuel conversion.

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Dioxygen-enhanced CO2 photoreduction on TiO2 supported Cu single-atom sites

Cited by 33 publications

References 61 publications

Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO₂ with Single-Atom Catalysts

Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO₂ with Single-Atom Catalysts

Intentionally Introducing Oxygen Vacancies and Ti³⁺ Defects on the Surface of Bi₄Ti₃O₁₂ Nanosheets for Promoting the Photoreduction of CO₂ to CH₃OH

Au Nanoparticle-Anchored Hollow Nanospheres of a Single-Atomized Porphyrin-Covalent Organic Framework Hybrid for Boosting Photoreduction of CO₂ under Solar Irradiation

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Dioxygen-enhanced CO2 photoreduction on TiO2 supported Cu single-atom sites

Cited by 33 publications

References 61 publications

Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO2 with Single-Atom Catalysts

Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO2 with Single-Atom Catalysts

Intentionally Introducing Oxygen Vacancies and Ti3+ Defects on the Surface of Bi4Ti3O12 Nanosheets for Promoting the Photoreduction of CO2 to CH3OH

Au Nanoparticle-Anchored Hollow Nanospheres of a Single-Atomized Porphyrin-Covalent Organic Framework Hybrid for Boosting Photoreduction of CO2 under Solar Irradiation

Contact Info

Product

Resources

About

Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO₂ with Single-Atom Catalysts

Recent Progress of Studies on Photoconversion and Photothermal Conversion of CO₂ with Single-Atom Catalysts

Intentionally Introducing Oxygen Vacancies and Ti³⁺ Defects on the Surface of Bi₄Ti₃O₁₂ Nanosheets for Promoting the Photoreduction of CO₂ to CH₃OH

Au Nanoparticle-Anchored Hollow Nanospheres of a Single-Atomized Porphyrin-Covalent Organic Framework Hybrid for Boosting Photoreduction of CO₂ under Solar Irradiation