Oxygen Vacancy-Rich S-Scheme CeO2@Ni1–xCoxSe2 Hollow Spheres Derived from NiCo-MOF for Remarkable Photocatalytic CO2 Conversion

Han, Wei; Chen, Yajie; Jiao, Yuzhen; Liang, Shumei; Li, Wei; Tian, Guohui

doi:10.1021/acssuschemeng.3c00470

Cited by 11 publications

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References 66 publications

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“…This hierarchical S-scheme heterostructure improved the catalytic efficiency, and the CO and CH 4 yields of OCNNb were 253.34 µmol g −1 h −1 and 68.11 µmol g −1 h −1 , respectively. Han et al also designed a hierarchical S-scheme semiconductor photocatalyst [116]. CeO 2 was coated on SiO 2 spheres, and the NiCo-MOF nanosheets were grown in situ, followed by a selenization reaction and etching, to finally obtain the CeO 2 @Ni 1-x Co x Se 2 hollow sphere photocatalyst with oxygen-rich vacancies (Figure 10b).…”

Section: Heterojunction Of 2d/3dmentioning

confidence: 99%

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S-Scheme Heterojunction Photocatalysts for CO2 Reduction

Li,

Cui,

Zhao

et al. 2024

Catalysts

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Photocatalytic technology, which is regarded as a green route to transform solar energy into chemical fuels, plays an important role in the fields of energy and environmental protection. An emerging S-scheme heterojunction with the tightly coupled interface, whose photocatalytic efficiency exceeds those of conventional type II and Z-scheme photocatalysts, has received much attention due to its rapid charge carrier separation and strong redox capacity. This review provides a systematic description of S-scheme heterojunction in the photocatalysis, including its development, reaction mechanisms, preparation, and characterization methods. In addition, S-scheme photocatalysts for CO2 reduction are described in detail by categorizing them as 0D/1D, 0D/2D, 0D/3D, 2D/2D, and 2D/3D. Finally, some defects of S-scheme heterojunctions are pointed out, and the future development of S-scheme heterojunctions is proposed.

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Section: Heterojunction Of 2d/3dmentioning

confidence: 99%

“…Subsequently, S-scheme heterojunctions for CO 2 reduction reported in recent years were summarized in Table 3. [116] Xe: 300 W Xe lamp.…”

Section: Heterojunction Of 2d/3dmentioning

confidence: 99%

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

Li,

Cui,

Zhao

et al. 2024

Catalysts

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Engineering of Ultra‐Thin Layer of MIL‐125(Ti) Nanosheet\Zn‐Tetracarboxy‐Phthalocyanine S‐Scheme Heterojunction as Photocatalytic CO₂ Reduction Catalyst

Jiao,

Chen,

Liu

et al. 2024

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Metal–organic frameworks (MOFs) with ultrathin 2D structure have attracted remarkable attention in photocatalytic application owing to the accessibility of abundant active sites on the surface. But high charge recombination results in poor photocatalytic activity. Herein, the synthesis of ultrathin MIL‐125(Ti) nanosheets is reported with a thickness of 1.3 nm through a simple chemical reaction route of precursor solution aging and subsequent solvothermal process for photocatalytic CO2 production. The maximal CO evolution rate achieves 200.8 µmol g−1 h−1, which is prominently higher than that (78.6 µmol g−1 h−1) of the bulk MIL‐125(Ti) counterpart. Furthermore, the structurally stable Zn (II) tetracarboxy phthalocyanine (ZnTcPc) molecules assembly on ultrathin MIL‐125(Ti) nanosheet (NS) to form MIL‐125(Ti) NS\ZnTcPc S‐scheme heterojunction through the strong interaction between the Ti3+ in MIL‐125(Ti) and the COOH in ZnTcPc. The introduction of ZnTcPc greatly extends light absorption range and increases charge separation rate. The experimental and density functional theory calculation results validate that the MIL‐125(Ti) NS\ZnTcPc S‐scheme heterojunction can favor CO2 adsorption and effectively depress the formation energy of the intermediates, achieving a high CO evolution rate of 450.8 µmol g−1 h−1. This work provides a strategy of engineering 2D MOF‐based heterostructure systems for photocatalytic application.

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Cocatalyst Embedded Ce‐BDC‐CeO₂ S‐Scheme Heterojunction Hollowed‐Out Octahedrons With Rich Defects for Efficient CO₂ Photoreduction

Li,

Chen,

Zhang

et al. 2024

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Constructing heterojunction photocatalysts with optimized architecture and components is an effective strategy for enhancing CO2 photoreduction by promoting photogenerated carrier separation, visible light absorption, and CO2 adsorption. Herein, defect‐rich photocatalysts (Ni2P@Ce‐BDC‐CeO2 HOOs) with S‐scheme heterojunction and hollowed‐out octahedral architecture are prepared by decomposing Ce‐BDC octahedrons embedded with Ni2P nanoparticles and subsequent lactic acid etching for CO2 photoreduction. The hollowed‐out octahedral architecture with multistage pores (micropores, mesopores, and macropores) and oxygen vacancy defects are simultaneously produced during the preparation process. The S‐scheme heterojunction boosts the quick transfer and separation of photoinduced charges. The formed hollowed‐out multi‐stage pore structure is favorable for the adsorption and diffusion of CO2 molecules and gaseous products. As expected, the optimized photocatalyst exhibits excellent performance, producing CO with a yield of 61.6 µmol h−1 g−1, which is four times higher than that of the original Ce‐BDC octahedrons. The X‐ray photoelectron spectroscopy, scanning Kelvin probe, and electron spin resonance spectroscopy characterizations confirm the S‐schematic charge‐transfer route. The key intermediate species during the CO2 photoreduction process are detected by in situ Fourier transform infrared spectroscopy to support the proposed mechanism for CO2 photoreduction. This work presents a synthetic strategy for excellent catalysts with potential prospects in photocatalytic applications.

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Oxygen Vacancy-Rich S-Scheme CeO₂@Ni_1–xCo_xSe₂ Hollow Spheres Derived from NiCo-MOF for Remarkable Photocatalytic CO₂ Conversion

Cited by 11 publications

References 66 publications

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

Engineering of Ultra‐Thin Layer of MIL‐125(Ti) Nanosheet\Zn‐Tetracarboxy‐Phthalocyanine S‐Scheme Heterojunction as Photocatalytic CO₂ Reduction Catalyst

Cocatalyst Embedded Ce‐BDC‐CeO₂ S‐Scheme Heterojunction Hollowed‐Out Octahedrons With Rich Defects for Efficient CO₂ Photoreduction

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Oxygen Vacancy-Rich S-Scheme CeO2@Ni1–xCoxSe2 Hollow Spheres Derived from NiCo-MOF for Remarkable Photocatalytic CO2 Conversion

Cited by 11 publications

References 66 publications

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

Engineering of Ultra‐Thin Layer of MIL‐125(Ti) Nanosheet\Zn‐Tetracarboxy‐Phthalocyanine S‐Scheme Heterojunction as Photocatalytic CO2 Reduction Catalyst

Cocatalyst Embedded Ce‐BDC‐CeO2 S‐Scheme Heterojunction Hollowed‐Out Octahedrons With Rich Defects for Efficient CO2 Photoreduction

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Oxygen Vacancy-Rich S-Scheme CeO₂@Ni_1–xCo_xSe₂ Hollow Spheres Derived from NiCo-MOF for Remarkable Photocatalytic CO₂ Conversion

Engineering of Ultra‐Thin Layer of MIL‐125(Ti) Nanosheet\Zn‐Tetracarboxy‐Phthalocyanine S‐Scheme Heterojunction as Photocatalytic CO₂ Reduction Catalyst

Cocatalyst Embedded Ce‐BDC‐CeO₂ S‐Scheme Heterojunction Hollowed‐Out Octahedrons With Rich Defects for Efficient CO₂ Photoreduction