Highly active and stable heterogeneous catalysts based on the entrapment of noble metal nanoparticles in 3D ordered porous carbon

Mao, Hui; Shen, Yueyue; Zhang, Qian; Ulaganathan, Mani; Zhao, Shilin; Yang, Yanhui; Hng, Huey Hoon

doi:10.1016/j.carbon.2015.09.057

Cited by 34 publications

(22 citation statements)

References 62 publications

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“…[9] Vittoz et al co-entrapped palladiumn anoparticles (Pd NPs) with ionic liquid insideasodium alginate matrix as ah ighly active and recyclable catalyst for allylic substitution reactions. [11][12][13] Previous studies have demonstrated that the interactions between catalytic speciesa nd the support play significant roles in the catalytic activity and stability. Unfortunately,t he inferior catalytic activitya nd selectivity stillm akes developing highly efficient and recyclable palladium catalysts an urgenttask.…”

Section: Introductionmentioning

confidence: 99%

Pyridinic Nitrogen‐Doped Graphene Nanoshells Boost the Catalytic Efficiency of Palladium Nanoparticles for the N‐Allylation Reaction

Feng

Pan

et al. 2019

ChemSusChem

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Section: Introductionmentioning

confidence: 99%

Pyridinic Nitrogen‐Doped Graphene Nanoshells Boost the Catalytic Efficiency of Palladium Nanoparticles for the N‐Allylation Reaction

Feng

Pan

et al. 2019

ChemSusChem

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“…In addition, the GAs are easy for the cleaning and recycling compared the traditional powder catalysts. Noble metal nanoparticles are frequently applied in heterogeneous catalysts . GAs have been combined with noble metal nanoparticles in heterogeneous catalysts .…”

Section: Introductionmentioning

confidence: 99%

Engineering 3D Ru/Graphene Aerogel Using Metal–Organic Frameworks: Capture and Highly Efficient Catalytic CO Oxidation at Room Temperature

Chen

et al. 2018

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Noble metals (Au, Pt, and Ru) loaded into carbon supports show excellent performance for CO oxidation. Herein, a tunable metal-organic framework (MOF) coating is applied to a macroscopic 3D Ru/graphene aerogel (Ru/GA) composite, using a facial step-by-step method. The open macroporous structure of the Ru/GA provides pathways for the access and diffusion of reactant and product molecules. The resulting HK (HKUST-1)-containing MOF composite exhibits good performance for CO adsorption. It can simultaneously adsorb and oxidize CO, which improves the reaction rate. In this work, the catalytic efficiency of the resulting catalyst is higher than that (≈48.4%) of the Ru/GA. These findings provide a simple method for increasing the instantaneous concentration of reactants around the catalyst, which in turn increases the reaction rate. The catalytic performances of composites subjected to different pretreatment conditions are also investigated. Hopefully, this finding may provide a feasible direction for the effective management of the diverse environment issues.

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“…To date, many carbon‐based heterogeneous nanocatalysts with various morphologies and structures (especially porous hollow nanostructures) containing different metal or noble‐metal nanocrystals have been explored for a wide variety of catalysis and electrocatalysis applications . Among them, Pd nanocrystals not only exhibit a versatile applicability and excellent catalytic activity towards various heterogeneous catalysis reactions but also possess a rational balance between cost‐effectiveness and activity . However, the immobilized nanoparticles (NPs) usually suffer from detachment during the catalytic reaction owing to their weak interactions with the matrixes …”

Section: Introductionmentioning

confidence: 99%

“…Among them, Pd nanocrystals not only exhibit a versatile applicability and excellent catalytic activity towards various heterogeneous catalysis reactions but also possess a rational balance between cost‐effectiveness and activity . However, the immobilized nanoparticles (NPs) usually suffer from detachment during the catalytic reaction owing to their weak interactions with the matrixes …”

Section: Introductionmentioning

confidence: 99%

“…To pursue high catalytic activity and stability, both the structure (pore, surface, and interface) of the carriers and the parameters (size, crystallization degree, crystal face, surface modification, etc.) of the nanocrystals have to be designed rationally . Firstly, to utilize costly noble metals efficiently, it is beneficial to optimize their sizes and load them in the supports in a well‐dispersed form.…”

Section: Introductionmentioning

confidence: 99%

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Smart Design of Small Pd Nanoparticles Confined in Hollow Carbon Nanospheres with Large Center‐Radial Mesopores

Zhao

et al. 2017

Eur J Inorg Chem

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Although considerable progress has been made with carbon‐based heterogeneous nanocatalysts, great effort is still needed to regulate their structural parameters to further improve their catalytic activities and stabilities. Herein, we have successfully designed and synthesized new composite nanocatalysts composed of porous hollow carbon nanospheres (PHCNs) containing many small Pd nanoparticles (NPs) on their inner surfaces (PHCNs@Pd NPs). Notably, the PHCNs have disordered micropores and large center‐radial mesopores in the shell and craterlike inner surface, and a high density of small Pd NPs are partially confined on the inner surfaces of the PHCNs. Dendrimer‐like mesoporous silica nanospheres (DMSNs) as hard templates play a critical role in the formation of these unique structures. The resulting PHCNs@Pd NP catalyst exhibits high catalytic activity and selectivity as well as good recyclability in the catalytic oxidation of benzyl alcohol to benzaldehyde, and this catalytic performance is attributed to the unique structure of the support coupled with ultradispersed Pd NPs. Moreover, this synthesis strategy may provide some inspiration for the synthesis of advanced composites with complicated nanostructures for various applications.

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Highly active and stable heterogeneous catalysts based on the entrapment of noble metal nanoparticles in 3D ordered porous carbon

Cited by 34 publications

References 62 publications

Pyridinic Nitrogen‐Doped Graphene Nanoshells Boost the Catalytic Efficiency of Palladium Nanoparticles for the N‐Allylation Reaction

Pyridinic Nitrogen‐Doped Graphene Nanoshells Boost the Catalytic Efficiency of Palladium Nanoparticles for the N‐Allylation Reaction

Engineering 3D Ru/Graphene Aerogel Using Metal–Organic Frameworks: Capture and Highly Efficient Catalytic CO Oxidation at Room Temperature

Smart Design of Small Pd Nanoparticles Confined in Hollow Carbon Nanospheres with Large Center‐Radial Mesopores

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