Palladium nanoparticle supported on nitrogen‐doped porous carbon: Investigation of structural properties and catalytic activity on Suzuki–Miyaura reactions

By calcining copper-doped amorphous zeolitic imidazolate framework (Cu/Co@aZIF), a novel magnetic nanoporous carbon composite (Cu/Co@NPC) material was produced, characterized by different spectroscopic techniques, and used for the first time as an efficient catalyst for the azide-alkyne cycloaddition (AAC) reaction and the reduction reaction of nitrophenol (RRN) under air in water. With this catalyst, the AAC and RRN reactions were conducted in aqueous solutions, and good to excellent yields of related products were synthesized in a short reaction time. The potential of the magnetic Cu/Co@NPC nanocatalyst for targeting RRN and AAC reactions was uncovered by studying specific substrates for RRN and AAC reactions. The Cu/Co@NPC magnetic nanocatalyst is recyclable at least five times, with just a drop of 6% and 22% in catalytic efficiency in RRN and AAC, respectively.

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Magnetic Cu/Co nanoparticles supported on nitrogen‐doped porous carbon derived from Cu/Co@aZIF: Investigation of catalytic activity and structural properties

Buğday

Yaşar

Altın

et al. 2023

“…Calcination of Pd@ZIF‐12 at 800°C for 3 h under argon atmosphere formed the CoPd@NPC@ZIF‐12 nanocatalyst. [ 51,52 ]…”

Section: Methodsmentioning

confidence: 99%

“…In addition, due to the properties of MOF mentioned above, they are regarded as a unique template and carbon source for porous carbon (PC) structures obtained by pyrolysis of MOFs. [ 39,42,51,52 ] Therefore, PC and nitrogen‐doped PC (NPC) materials have been attracted considerable attention as novel and versatile, functional materials. N‐doping can develop the chemical, electrical, and functional properties of carbon materials.…”

Section: Introductionmentioning

confidence: 99%

Porous carbon‐supported CoPd nanoparticles: High‐performance reduction reaction of nitrophenol

Buğday

Altın

Yaşar

2022

Self Cite

Magnetic porous carbon composite was synthesized from zeolitic imidazolate framework (ZIF‐12) and used as a support material to fabricate CoPd nanoparticles decorated NPC@ZIF‐12 nanocatalyst. The structure of CoPd@NPC@ZIF‐12 has been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD), Raman, Brunauer–Emmett–Teller (BET), X‐ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and inductively coupled plasma mass spectrometry (ICP‐MS) techniques. The catalytic reduction reaction of nitrophenols (NP) to aminophenols (AP) was successfully achieved by CoPd@NPC@ZIF‐12 nanocatalyst. When the catalytic performance of the catalyst was compared with other reported catalysts, the performance of the catalyst and reusability was found much better. This better catalytic activity of the CoPd@NPC@ZIF‐12 nanocatalyst may be attributed to facilitating the mass transfer of the nitro compound and the wettability of catalyst caused by the high nitrogen content of the carbon matrix and to the synergistic effect of Co and Pd nanoparticles. The CoPd@NPC@ZIF‐12 nanocatalyst showed perfect catalytic activity in the reduction of 4‐nitrophenol (4‐NP), 3‐nitrophenol (3‐NP), and 2,4‐nitrophenol (2,4‐DNP) reactions with high turnover frequency (TOF) values of 1679, 2687, and 1014 h−1, respectively. The reusability experiments of the CoPd@NPC@ZIF‐12 nanocatalyst showed that the catalytic activity of the CoPd@NPC@ZIF‐12 nanocatalyst was almost retained after 10 consecutive reaction runs. The SEM, XRD, and FTIR analyses of the 10 times used CoPd@NPC@ZIF‐12 nanocatalyst showed that there were limited changes in the structure of the CoPd@NPC@ZIF‐12 nanocatalyst. This highly active, magnetically separable, and recyclable CoPd@NPC@ZIF‐12 catalyst exhibits better catalytic activity than commercial Pd/C catalysts.

Size‐Dependent Catalytic Activity Over MOF‐Derived Cobalt Oxide Supported PdO Nanoparticles in Suzuki Reaction

Pan,

Chen,

Chen

et al. 2024

Palladium nanoparticles immobilized on ZIF 67‐derived porous CoOx were prepared by wet‐impregnation method, followed by calcination at different temperatures. The calcination temperature has been employed to effectively manipulate the size of metal nanoparticles, where higher calcination temperatures resulted in larger sizes. The experimental results revealed that by manipulating the calcination temperature, the synthesis of palladium nanoparticles with varying sizes could be effectively controlled. Increasing the calcination temperature resulted in larger particle sizes. At a calcination temperature of 350°C, the synthesis process produced the smallest palladium nanoparticles, averaging 1.35 nm in size, facilitating the reaction between aryl halides and arylboronic acids with yields ranging from 83% to 99%. Furthermore, these nanoparticles demonstrated superior catalytic activity and recyclability.