A game-changing design of low-cost, large-size porous cocatalysts decorated by ultra-small photocatalysts for highly efficient hydrogen evolution

Li, Yuanli; Gao, Chunlang; Jiang, Wenshuai; Zhuang, Chunqiang; Tan, Wuyuan; Li, Weiming; Li, Yongli; Wang, Lihua; Liao, Xiaozhou; Sun, Zaicheng; Zou, Jin; Han, Xiaodong

doi:10.1016/j.apcatb.2021.119923

Cited by 51 publications

(26 citation statements)

References 53 publications

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“…A plausible mechanism of the TH reaction was proposed (Figure e), and the reaction process involves four steps: (1) First, the benzyl alcohol is absorbed on the surface of NiO. , Under visible light irradiation, the photoexcited e – and h + are generated. The e – transfers accumulate on the NiO surface, meanwhile, the • O 2 – is formed from O 2 by e – and further evolves to • OH . (2) After that, the absorbed benzyl alcohol is oxidized to benzaldehyde by h + but the active hydrogen species are left on the surface of NiO. , (3) Subsequently, a quinoline molecule is absorbed by the hydrogen bond interaction between N in quinoline and reactive hydrogen species on the NiO surface .…”

Section: Resultsmentioning

confidence: 99%

“…54,69 Under visible light irradiation, the photoexcited e − and h + are generated. The e − transfers accumulate on the NiO surface, 70 meanwhile, the • O 2 − is formed from O 2 by e − and further evolves to • OH. 67 (2) After that, the absorbed benzyl alcohol is oxidized to benzaldehyde by h + but the active hydrogen species are left on the surface of NiO.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Cao

Sun

et al. 2021

ACS Catal.

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The pursuit of a powerful strategy to enable chemoselective transfer hydrogenation reaction of quinolines to their corresponding tetrahydroquinolines is of great significance, but it remains a challenge. Herein, we have realized heterogeneous photocatalytic chemoselective transfer hydrogenation reaction of quinolines to their corresponding tetrahydroquinolines over the developed hierarchical NiO/In2O3–CdS microspheres with high activity and selectivity under visible light irradiation and mild conditions, in which benzyl alcohol serves as a hydrogen donor to replace high-pressure flammable molecular hydrogen. More interestingly, the experimental and theoretical calculation results confirm that NiO acts as active sites for this photocatalytic transfer hydrogenation reaction, and it adsorbs and activates benzyl alcohol far more effectively than the metallic Ni. It breaks through the traditional concept that the metallic Ni serves as photocatalytically active sites for the effective activation of benzyl alcohol. This work not only presents an efficient strategy for the production of tetrahydroquinolines via heterogeneous photocatalytic chemoselective transfer hydrogenation reaction of quinolines but also paves a way for designing other heterogeneous photocatalytic systems toward chemoselective transfer hydrogenation reaction of diverse N-heterocycles.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Cao

Sun

et al. 2021

ACS Catal.

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“…As demonstrated by other researchers, precise control over the microstructures of nanocatalysts is crucial to optimize HER properties. [27][28][29] In this work, we were able to precisely control the top-capping feature of aligned TMDs nanotubes through implementing a simple growth control, which has been proven quite effective in improving the catalysis efficacy due to increased active edge sites.…”

Section: Resultsmentioning

confidence: 99%

Open-ended W₁₈O₄₉-filled tungsten dichalcogenide nanotubes grown on a W substrate to efficiently catalyze hydrogen evolution

Zhang

Wang

et al. 2021

Nanoscale Adv.

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“…Nonetheless, the limitation of high price, extreme scarcity, and complicated synthetic processes affect the commercialization of current photocatalysts with the noble metals. Therefore, it is significant to develop high-performance CdS-based photocatalysts by coupling with low-cost materials, such as the transition metal sulfide [7][8][9][10], transition metal oxide [11,12], graphene oxide [13], hydroxide [14], carbide [15], etc.…”

Section: Introduction mentioning

confidence: 99%

Construction and performance of CdS/MoO2@Mo2C-MXene photocatalyst for H2 production

et al. 2022

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Nowadays, photocatalytic technologies are regarded as promising strategies to solve energy problems, and various photocatalysts have been synthesized and explored. In this paper, a novel CdS/MoO2@Mo2C-MXene photocatalyst for H2 production was constructed by a two-step hydrothermal method, where MoO2@Mo2C-MXene acted as a binary co-catalyst. In the first hydrothermal step, MoO2 crystals with an egged shape grew on the surface of two-dimensional (2D) Mo2C MXene via an oxidation process in HCl aqueous solution. In the second hydrothermal step, CdS nanorods were uniformly assembled on the surface of MoO2@Mo2C-MXene in ethylenediamine with an inorganic cadmium source and organic sulfur source. The CdS/MoO2@Mo2C-MXene composite with MoO2@Mo2C-MXene of 5 wt% exhibits an ultrahigh visible-light photocatalytic H2 production activity of 22,672 µmol/(g·h), which is ∼21% higher than that of CdS/Mo2C-MXene. In the CdS/MoO2@Mo2C-MXene composite, the MoO2 with metallic nature separates CdS and Mo2C MXene, which acts as an electron-transport bridge between CdS and Mo2C MXene to accelerate the photoinduced electron transferring. Moreover, the energy band structure of CdS was changed by MoO2@Mo2C-MXene to suppress the recombination of photogenerated carriers. This novel compound delivers upgraded photocatalytic H2 evolution performance and a new pathway of preparing the low-cost photocatalyst to solve energy problems in the future.

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A game-changing design of low-cost, large-size porous cocatalysts decorated by ultra-small photocatalysts for highly efficient hydrogen evolution

Cited by 51 publications

References 53 publications

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Open-ended W₁₈O₄₉-filled tungsten dichalcogenide nanotubes grown on a W substrate to efficiently catalyze hydrogen evolution

Construction and performance of CdS/MoO2@Mo2C-MXene photocatalyst for H2 production

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A game-changing design of low-cost, large-size porous cocatalysts decorated by ultra-small photocatalysts for highly efficient hydrogen evolution

Cited by 51 publications

References 53 publications

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In2O3–CdS Microspheres

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In2O3–CdS Microspheres

Open-ended W18O49-filled tungsten dichalcogenide nanotubes grown on a W substrate to efficiently catalyze hydrogen evolution

Construction and performance of CdS/MoO2@Mo2C-MXene photocatalyst for H2 production

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Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Open-ended W₁₈O₄₉-filled tungsten dichalcogenide nanotubes grown on a W substrate to efficiently catalyze hydrogen evolution