Synthesis of a task-specific imidazolium-based porous triazine polymer decorated with ultrafine Pd nanoparticles toward alcohol oxidation

Abstract

The properties of catalyst support can greatly affect the catalytic performance. Therefore, it is very important to design and synthesize the catalyst support purposefully. Herein, a series of imidazolium-linked porous...

Size-Selective Suzuki–Miyaura Coupling Reaction over Ultrafine Pd Nanocatalysts in a Water-Stable Indium–Organic Framework

“…In detail, the unchanged peak positions with reduced intensity indicate the successful integration of porous MOF and Pd species where one moderate peak at ∼40°belongs to the (111) plane of Pd. 34 In Figure 2b, similar Type-I isotherms are observed, and their pore size distribution (PSD) curves exhibit a maximum distribution of ∼0.51 and ∼0.66 nm for InOF-1 and Pd@InOF-1, respectively. The calculated specific surface areas are 724.32 and 380.51 m 2 g −1 for pure InOF-1 and Pd@InOF-1, respectively, indicating that the obtained Pd species would partially block MOF channels (Table S2).…”

“…In order to verify the structural components of composites, PXRD is used to show two sets of peaks attributed to the tetragonal phase of InOF-1 and face-centered-cubic phase of Pd (PDF#65-2867), respectively (Figure a). In detail, the unchanged peak positions with reduced intensity indicate the successful integration of porous MOF and Pd species where one moderate peak at ∼40° belongs to the (111) plane of Pd . In Figure b, similar Type-I isotherms are observed, and their pore size distribution (PSD) curves exhibit a maximum distribution of ∼0.51 and ∼0.66 nm for InOF-1 and Pd@InOF-1, respectively.…”

Preparation of a triazine porous organic polymer thin film by nanoparticle-polymer reticulation for high-efficient molecule/ion separation

“…36 It is noteworthy that the characteristic peak appears at 1408 cm −1 , which is ascribed to the C–N stretching bands as a result of the formation of imidazole rings in TPOP. 37 Meanwhile, the characteristic peaks at 1720 cm −1 and 1250 cm −1 correspond to the CO and C–O stretching vibration of the acetate anions, respectively, demonstrating that the acetate ions were coordinated with imidazole cations on the TPOP nanoparticles. However, in the case of TPOP-CS, the characteristic peaks of the acetate ions gradually disappeared due to the encapsulation of CS macromolecules in the TPOP nanoparticles.…”

Ionic Conjugated Microporous Polymers for Cycloaddition of Carbon Dioxide to Epoxides

“…As shown in the FTIR spectra in Figure a, compared with the corresponding monomer, the absence of the primary amine (─NH 2 ) bands at ≈3400 cm −1 in the polymer product indicates the successful polycondensation to form iCMPs. [ 28 ] Additionally, the C═C double‐band at 1161 cm −1 and the nitrile band (C≡N) at 1403 cm −1 are supportive proof for the formation of the imidazolium ring. [ 28 ] In the NMR spectra in Figure 1b–d, the characteristic peak at 170 ppm (marked as peak g ) can be assigned to carbons of the s‐ triazine ring, suggesting the presence of s‐ triazine units in iCMP‐2 and iCMP‐3.…”

“…[ 28 ] Additionally, the C═C double‐band at 1161 cm −1 and the nitrile band (C≡N) at 1403 cm −1 are supportive proof for the formation of the imidazolium ring. [ 28 ] In the NMR spectra in Figure 1b–d, the characteristic peak at 170 ppm (marked as peak g ) can be assigned to carbons of the s‐ triazine ring, suggesting the presence of s‐ triazine units in iCMP‐2 and iCMP‐3. The peak at 150 ppm (marked as peak c ) is attributed to the imidazolium ring.…”