Hollow nanosphere construction of covalent organic frameworks for catalysis: (Pd/C)@TpPa COFs in Suzuki coupling reaction

Li, Yuan; Pei, Biao; Chen, Junjie; Bing, Shaosuo; Hou, Linxiao; Sun, Qi; Xu, Gang; Yao, Zhikan; Zhang, Lin

doi:10.1016/j.jcis.2021.01.105

Cited by 43 publications

(21 citation statements)

References 43 publications

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“…This shows the remarkable ability of 0.5Cu/ZnS/0.5COF to stabilize photocatalytic hydrogen evolution. This can be reasonably explained since the covalent organic framework can act as a protective layer for Cu/ZnS by preventing the potential photo corrosion of Cu/ZnS [38]. The mechanism of Cu/ZnS/COF is shown in Figure 7.…”

Section: Effect Of Cu Doping Ratiomentioning

confidence: 91%

Photocatalytic Hydrogen Evolution from Water Splitting Using Core-Shell Structured Cu/ZnS/COF Composites

Wang

Yang

et al. 2021

Nanomaterials

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Hydrogen is considered to be a very efficient and clean fuel since it is a renewable and non-polluting gas with a high energy density; thus, it has drawn much attention as an alternative fuel, in order to alleviate the issue of global warming caused by the excess use of fossil fuels. In this work, a novel Cu/ZnS/COF composite photocatalyst with a core–shell structure was synthesized for photocatalytic hydrogen production via water splitting. The Cu/ZnS/COF microspheres formed by Cu/ZnS crystal aggregation were covered by a microporous thin-film COF with a porous network structure, where COF was also modified by the dual-effective redox sites of C=O and N=N. The photocatalytic hydrogen production results showed that the hydrogen production rate reached 278.4 µmol g−1 h−1, which may be attributed to its special structure, which has a large number of active sites, a more negative conduction band than the reduction of H+ to H2, and the ability to inhibit the recombination of electron–hole pairs. Finally, a possible mechanism was proposed to effectively explain the improved photocatalytic performance of the photocatalytic system. The present work provides a new concept, in order to construct a highly efficient hydrogen production catalyst and broaden the applications of ZnS-based materials.

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Section: Effect Of Cu Doping Ratiomentioning

confidence: 91%

Photocatalytic Hydrogen Evolution from Water Splitting Using Core-Shell Structured Cu/ZnS/COF Composites

Wang

Yang

et al. 2021

Nanomaterials

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“…The conversion for the reactant with a phenyl functional group decreased to 14%, and coupling of 1,3,5-tris(4-iodophenyl)benzene and phenyl boronic acid dropped dramatically to 0.4%. 33…”

Section: Synthesis and Application Of Pd/cof Catalystsmentioning

confidence: 99%

Covalent organic framework supported palladium catalysts

et al. 2022

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“…Li and co workers [78] designed a yolk-shell structure-based COF [Pd/C@TpPa] and explored its application in the SMC ChemistrySelect reaction involving bromo benzenes( Scheme 1, Table 1h).…”

Section: Chemistryselectmentioning

confidence: 99%

“…Li and co workers [78] designed a yolk‐shell structure‐based COF [Pd/C@TpPa] and explored its application in the SMC reaction involving bromo benzenes( Scheme 1, Table 1h). Reaction tolerated several aryl boronic acid derivatives and substituted aryl benzenes.…”

Section: Introductionmentioning

confidence: 99%

Evolving Trends for C−C Bond Formation Using Functionalized Covalent Organic Frameworks as Heterogeneous Catalysts

Pasricha

Chaudhary²,

Srivastava

2022

ChemistrySelect

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Covalent organic frameworks (COFs), also called “Organic Zeolites,” are crystalline porous organic polymers with robust and pre‐designable architecture and high crystallinity. They can be structurally controlled and functionally managed, due to the availability of diverse organic functionalities, covalent linkages and topologies. The current review briefly outlines their design strategies and comprehensively discusses their applications in the carbon‐carbon bond formation reactions. The reactivity of COF‐based catalysts with their homogeneous counterparts, catalyst stability, role of matrix, tailored organocatalysts and substituent effect on the reaction parameters, chemo‐/stereo‐/regioselectivity, shape/size selectivity are also discussed. Finally, the challenges and future prospects of functionalized COF‐based catalysts are discussed. These discussions will provide a better understanding of the role of COF‐based catalysts in the C−C bond formation and will also open doors to the design and synthesis of more robust, sustainable and benign catalytic systems, which might play a key role in organic synthesis and catalysis.

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Hollow nanosphere construction of covalent organic frameworks for catalysis: (Pd/C)@TpPa COFs in Suzuki coupling reaction

Cited by 43 publications

References 43 publications

Photocatalytic Hydrogen Evolution from Water Splitting Using Core-Shell Structured Cu/ZnS/COF Composites

Photocatalytic Hydrogen Evolution from Water Splitting Using Core-Shell Structured Cu/ZnS/COF Composites

Covalent organic framework supported palladium catalysts

Evolving Trends for C−C Bond Formation Using Functionalized Covalent Organic Frameworks as Heterogeneous Catalysts

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