Facile synthesis of uniform spherical covalent organic frameworks for determination of neonicotinoid insecticides

Liu, Weihua; Wang, Juntao; Song, Shuangju; Hao, Lin; Li, Jiajia; An, Yangjuan; Guo, Yaxing; Wu, Qiuhua; Wang, Chun

doi:10.1016/j.foodchem.2021.130653

Cited by 50 publications

(9 citation statements)

References 36 publications

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“…At the same time, a new peak assigned to the −CN group appeared at 1622 cm –1 , indicating the successful synthesis of imine-linked COFs . The XRD pattern showed that COFs had two diffraction peaks at 3.8 and 20°, corresponding to plane (100) of the COFs and (201) of the axial π–π stacking peak, , respectively (Figure S2). The diffraction peaks of the COFs prepared at different solvothermal temperatures were basically consistent, indicating that they have similar crystal structures.…”

Section: Resultsmentioning

confidence: 99%

Solvothermal Synthesis of Uniform Covalent Organic Framework Microspheres Enabling High-Loading Palladium for Oxygen Reduction Reaction

et al. 2023

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Although the solvothermal synthesis has become a prevailing strategy for the preparation of diverse spherical covalent organic frameworks (COFs), synthesis of uniform COF microspheres has still been a grand challenge due to the uncontrollable kinetics. Herein, we introduced 2,4,6-trimethylbenzaldehyde (TBA) as a molecular regulator in the reaction system, where the size and uniformity of spherical COFs were controlled by dynamic reversibility of imine exchange between TBA and building units and depended on the addition amount, molecular structure, and synthesis temperature. The applicability of the synthetic strategy was demonstrated by varying different structural units. Moreover, imine linkages of COF microspheres function as active sites suitable for coordinating with Pd single atoms and atomic clusters to promote electron transfer and synergistically enhance electrocatalytic oxygen reduction reaction. This work addressed the problems of poor uniformity and untunable size of COF spheres previously faced by the solvothermal method, thereby providing guidance for the construction of spherical COF-based catalyst supports.

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Section: Resultsmentioning

confidence: 99%

Solvothermal Synthesis of Uniform Covalent Organic Framework Microspheres Enabling High-Loading Palladium for Oxygen Reduction Reaction

et al. 2023

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“…Low-temperature N 2 isotherms revealed the porous characteristics of the as-synthesized materials (Figure 1e). 40,41 The Brunauer−Emmett−Teller (BET) surface areas were calculated to be 154.18 and 75.15 m 2 g −1 , with accumulative total pore volumes (V total ) of 0.128 and 0.112 cm 3 g −1 for FP-POP and iFP-POP, respectively. The pore-size distribution curves based on the nonlocal density functional theory model indicated the meso-and macropore-dominated pore structures for both FP-POP and iFP-POP, which was beneficial for the capture of iodine (Figure 1f).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Ionic Functionalized Magnetic Porous Polymers as Advanced Materials for High-Efficiency Water Decontamination: Bactericidal and Iodine Adsorption

Miao,

Tang,

Shi

et al. 2023

ACS Appl. Polym. Mater.

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The relentless exploration of environmentally friendly remediation materials for high-efficiency killing of bacteria and capture of radioactive iodine from water is an eternal mutual topic among both academia and industry. Herein, a magnetic ionic porous organic polymer (iFP-POP) featuring sustainable and recyclable capacity was prepared via the "multivariate" strategy combined with subsequent postsynthesis modification and served as an advanced material to purify polluted water. The iFP-POP with an ultrafine magnetic γ-Fe 2 O 3 core and a hierarchical porous polymer layer was prepared via a facile and scalable synthesis strategy, in which γ-Fe 2 O 3 was formed directly during the coupling reaction. The iFP-POP featured abundant binding sites for I 2 , including highly polar heteroatoms, quaternary ammonium ionic groups, magnetic γ-Fe 2 O 3 , and electronegative cyclopentadiene, simultaneously, and presented ultrahigh I 2 capture capacities. Notably, iFP-POP recovered easily and rapidly from various solutions by using a magnet, which could be easily regenerated with almost no performance degradation. The unique structure endowed prominent antimicrobial activity to iFP-POP to act as a broad-spectrum bactericide. In vitro assay demonstrated that iFP-POP displays a cation-enhanced photothermal antibacterial effect toward both Gram-positive Staphylococcus aureus (99.93%) and Gram-negative Escherichia coli (94.99%). Furthermore, the encapsulation of I 2 endowed iFP-POP with the diffusion antibacterial effect, allowing iFP-POP to act as a recyclable antibacterial material. This work proposes inspiring information for the rational design and controllable fabrication of targeted POP-based materials for environmental pollution management.

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“…These observations confirm that if the molar proportion between BPDA and TAPA is 3 : 2, the synthesized COF will possess an excellent uniform structure. 85…”

Section: Synthesis Methods For Cofsmentioning

confidence: 99%

“…These observations confirm that if the molar proportion between BPDA and TAPA is 3 : 2, the synthesized COF will possess an excellent uniform structure. 85 Hierarchically flower-like hollow COFs (HFH-COFs) have been prepared by this facile method. The obtained COFs possess excellent crystallinity, a very large surface area, uniform mesoporous construction, and outstanding thermal/chemical stability.…”

Section: Room-temperature Synthesismentioning

confidence: 99%

Design, synthesis, and application of covalent organic frameworks as catalysts

Nikkhoo¹,

Mallakpour

Hussain

2023

New J. Chem.

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Facile synthesis of uniform spherical covalent organic frameworks for determination of neonicotinoid insecticides

Cited by 50 publications

References 36 publications

Solvothermal Synthesis of Uniform Covalent Organic Framework Microspheres Enabling High-Loading Palladium for Oxygen Reduction Reaction

Solvothermal Synthesis of Uniform Covalent Organic Framework Microspheres Enabling High-Loading Palladium for Oxygen Reduction Reaction

Ionic Functionalized Magnetic Porous Polymers as Advanced Materials for High-Efficiency Water Decontamination: Bactericidal and Iodine Adsorption

Design, synthesis, and application of covalent organic frameworks as catalysts

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