One‐Step Synthesis of Dicyanobenzene‐Derived Nitrogen‐Doped Porous Carbon Monolayers: Porosity and Near‐infrared Photoactivity

Tong, Jing; Hou, Xudong; Liu, Bo; Zhang, Junxiang; Ding, Yanjun; Xu, Hangxun

doi:10.1002/cctc.201700724

Cited by 10 publications

(8 citation statements)

References 53 publications

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“…More precisely, the D‐band is indicative of the sp 3 configuration that can be attributed to presence of intrinsic defects, while the G‐band is representative of graphitic carbon . Notably, the calculated I D /I G was measured to be 0.84, confirming high amounts of defective or disordered graphitic structures …”

Section: Resultssupporting

confidence: 93%

Pd@magnetic Carbon Dot Immobilized on the Cyclodextrin Nanosponges ‐ Biochar Hybrid as an Efficient Hydrogenation Catalyst

et al. 2019

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With the aim of benefiting from the advantage of magnetic catalysts, chemistry of cyclodextrin, i. e. the capability of formation of inclusion complex and acting as phase transferring agent, as well as biochars as biocompatible, cost‐effective and efficient catalyst support, for the first time a ternary hybrid system composed of cyclodextrin nanosponges (CDNS), palladated magnetic carbon quantum dot (Pd@CQDs@Fe) and Bell‐pepper‐derived biochar (Biochar) was designed and prepared through functionalization of CDNS and Biochar and their covalent conjugation followed by immobilization of Pd@CQDs@Fe. The hybrid system was characterized and then applied as a magnetic heterogeneous catalyst for promoting hydrogenation of nitroarenes. The results confirmed high catalytic activity, selectivity and recyclability of the catalyst (up to ten reaction runs) as well as low Pd leaching. Comparing the catalytic activity of the catalyst with some control samples, the contribution of CDNS, Biochar and CQDs@Fe to the catalysis was confirmed.

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Section: Resultssupporting

confidence: 93%

Pd@magnetic Carbon Dot Immobilized on the Cyclodextrin Nanosponges ‐ Biochar Hybrid as an Efficient Hydrogenation Catalyst

et al. 2019

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“…In more detail, the D-band is indicative of the sp 3 configuration due to the presence of intrinsic defects and the observed G-band can be attributed to the graphitic carbon [49][50][51] . Notably, the calculated I D /I G was measured to be 0.83, confirming high amounts of defective or disordered graphitic structures 52 .…”

Section: Results and Discussion Catalyst Characterization The Xrd Patmentioning

confidence: 87%

Preparation of palladated porous nitrogen-doped carbon using halloysite as porogen: disclosing its utility as a hydrogenation catalyst

Sadjadi

Malmir

Lazzara

et al. 2020

Sci Rep

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in this article, halloysite nanoclay (Hal) was used as porogen for the synthesis of nitrogen doped porous carbon material with high specific surface area and pore volume. To this purpose, polymerization of melamine and terephthalaldehyde (Mt) was performed in the presence of amine-functionalized carbon coated Hal (Hal@Glu-2N) that was prepared from hydrothermal treatment of Hal and glucose. Then, the prepared nanocomposite was palladated and carbonized to afford Pd@Hal@C. To further improve the textural properties of the nanocomposite, and introduce more pores in its structure, Hal nanotubes were etched. the characterization of the resulting compound, pd@c, and comparing it with pd@ Hal@C, showed that etching of Hal significantly increased the specific surface area and pore volume in pd@c. pd@c was successfully used as a heterogeneous catalyst for promoting hydrogenation of nitroarens in aqueous media using hydrogen with atmospheric pressure as a reducing agent. the comparison of the structural features and catalytic activity of the catalyst with some control catalysts, including, Pd@Hal, Pd@Hal@Glu, Pd@Hal@Glu-MT and Pd@Hal@C confirmed that nitrogen groups in c could improve the pd anchoring and suppress its leaching, while etching of Hal and introduction of more pores could enhance the catalytic activity through facilitating the mass transfer. Carbon materials are among the most used compounds for diverse range of applications such as electrode materials, energy storage, catalysis and water treatment 1-5. The function of carbon materials is strongly dependent on their physical and chemical properties such as specific surface area, porosity and the presence of heteroatoms in the carbon structure. According to the literature, doping of heteroatoms such as nitrogen atoms in the carbon structure can improve the electric and chemical properties of carbon materials and expand their applications 2,3,6-10. To achieve nitrogen doped carbon, carbonization of heteroatom-containing substrates has been suggested. However, the control of the textural properties of the carbon material through simple carbonization is challenging. To furnish a solution to this issue, use of template and structural guides such as KIT and mesoporous silica has been suggested 11,12. However, most of the templates are synthetic and use of them is costly and lingers the synthetic process of carbon materials 13. Halloysite is a natural clay mineral (imperial formula of Al 2 Si 2 O 5 (OH) 4 •nH 2 O) with tubular morphology and chemistry similar to Kaolin 14-23. This nanoclay has been successfully applied for various applications such as material chemistry, catalysis and smart delivery 18,24-26. It should be noted that the specific geological origin of Hal affects the morphological features and size polydispersity of nanotubes 27. Moreover, the chemistry of the surface of Hal is readily tuned-able and can be modified through surface functionalization 15,16,27. Reduction of nitro group to amine functionality is an industrially attractive chemical transf...

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“…In greater detail, the Dband is indicative of the sp 3 con guration that can be attributed to presence of intrinsic defects and the G-band can be attributed to the graphitic carbon [40][41][42] . In this line, the I D /I G was calculated and measured to be 0.83, can con rm disordered graphitic structures or highly defective 43 .…”

Section: Catalyst Characterizationmentioning

confidence: 89%

Magnetic Composite of γ-Fe2O3 Hollow Sphere and Palladium Doped Nitrogen-rich Mesoporous Carbon as a Recoverable Catalyst for C-C Coupling Reactions

Malmir

Heravi

Amiri

et al. 2021

Preprint

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In this article, Palladated-magnetic nitrogen doped porous carbon was prepared from nano magnetic γ-Fe2O3 hollow sphere (h-Fe2O3) with high specific surface area and pore volume. To the purpose, initially h-Fe2O3 was prepared and covered with glucose via hydrothermal treatment with subsequent polymerization of organic shell. The polymerization of melamine-resorcinol-formaldehyde (MRF) was achieved in the presence of Cl-functionalized glucose coated h-Fe2O3 (h-Fe2O3@glu-MRF). Next, the prepared magnetic core-shell hollow sphere was palladated followed by carbonization to yield Pd@h-Fe2O3@C introducing more pores in its structure. The resulted compound, Pd@h-Fe2O3@C, was fully characterized, showing that carbonization process expressively increased the specific surface area. The resulted Pd@h-Fe2O3@C was successfully used for promoting C-C coupling reactions under mild reaction conditions as a heterogeneous catalyst and its activity was compared with some prepared control catalysts. This novel catalyst was magnetically separated simply by a magnet bar and recycled and reused at least in five consecutive runs, without considerable loss of its activity. It is note mentioning that, high recyclability with low Pd leaching are another gains of this protocol.

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One‐Step Synthesis of Dicyanobenzene‐Derived Nitrogen‐Doped Porous Carbon Monolayers: Porosity and Near‐infrared Photoactivity

Cited by 10 publications

References 53 publications

Pd@magnetic Carbon Dot Immobilized on the Cyclodextrin Nanosponges ‐ Biochar Hybrid as an Efficient Hydrogenation Catalyst

Pd@magnetic Carbon Dot Immobilized on the Cyclodextrin Nanosponges ‐ Biochar Hybrid as an Efficient Hydrogenation Catalyst

Preparation of palladated porous nitrogen-doped carbon using halloysite as porogen: disclosing its utility as a hydrogenation catalyst

Magnetic Composite of γ-Fe2O3 Hollow Sphere and Palladium Doped Nitrogen-rich Mesoporous Carbon as a Recoverable Catalyst for C-C Coupling Reactions

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