Metal–Organic Framework Accelerated One-Step Capture and Reduction of Palladium to Catalytically Active Nanoparticles

Li, Yongming; Zhong, Huifei; Jin, Yulong; Guan, Bo; Yue, Jiling; Zhao, Rui

doi:10.1021/acsami.2c10594

Cited by 10 publications

(5 citation statements)

References 65 publications

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“…[102,120] Zr-based MOFs can also been applied for the capture and in situ reduction of metal cations. Li et al [181] synthesized UiO-66 that selectively captured Pd(II) ions and reduced them into Pd nanoparticles in situ that were uniformly distributed in the MOF support within 5 min without any extra reductant or capping agent. The as-synthesized Pd@UiO-66 demonstrated catalytic ability toward Suzuki cross-coupling reactions.…”

Section: Organic Framework (Mofs and Cofs)mentioning

confidence: 99%

Material Design Strategies for Recovery of Critical Resources from Water

et al. 2023

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Population growth, urbanization, and decarbonization efforts are collectively straining the supply of limited resources that are necessary to produce batteries, electronics, chemicals, fertilizers, and other important products. Securing the supply chains of these critical resources via the development of separation technologies for their recovery represents a major global challenge to ensure stability and security. Surface water, groundwater, and wastewater are emerging as potential new sources to bolster these supply chains. Recently, a variety of material‐based technologies have been developed and employed for separations and resource recovery in water. Judicious selection and design of these materials to tune their properties for targeting specific solutes is central to realizing the potential of water as a source for critical resources. Here, the materials that are developed for membranes, sorbents, catalysts, electrodes, and interfacial solar steam generators that demonstrate promise for applications in critical resource recovery are reviewed. In addition, a critical perspective is offered on the grand challenges and key research directions that need to be addressed to improve their practical viability.

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Section: Organic Framework (Mofs and Cofs)mentioning

confidence: 99%

Material Design Strategies for Recovery of Critical Resources from Water

et al. 2023

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“…As excellent adsorbents, porous MOFs have made great progress in stabilizing and dispersing Pd NPs. Porous MOFs can provide excellent confinement effect for the controllable growth and restriction of further aggregation of metal NPs . Therefore, MOFs have been recognized as ideal host matrices to encapsulate Pd NPs.…”

Section: Introductionmentioning

confidence: 99%

Series of Dual Functional Two-Dimensional RE-OFs for Nitrophenol Reduction and Dye Separation

et al. 2023

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The rational design and preparation of stable and multifunctional metal–organic frameworks (MOFs) with excellent catalysis and adsorption properties are desirable but are great challenges. The nitrophenol (NP) reduction to aminophenols (APs) by using the catalyst Pd@MOFs is an effective strategy, which has attracted extensive attention in recent years. Here, we report four stable isostructural two-dimensional (2D) rare earth metal–organic frameworks [RE4(AAPA)6(DMA)2 (H2O)4][DMA]3[H2O]8 (namely LCUH-101, RE = Eu, Gd, Tb, Y; AAPA2– = 5-[(anthracen-9-yl-methyl)-amino]-1,3-isophthalate), which feature a 2D layer structure with sql topology of point symbol {44·62} and exhibit excellent chemical stability and thermostability. The as-synthesized Pd@LCUH-101 was utilized for the catalytic reduction of 2/3/4-nitrophenol, which indicates high catalytic activity and recyclability attributed to the synergistic effect between Pd nanoparticles and the 2D layered structure. Of note, the turnover frequency (TOF), the reaction rate constant (k), and the activation energy (E a) of Pd@LCUH-101 (Eu) in the reduction of 4-NP, respectively, are 1.09 s–1, 2.17 min–1, and 50.2 kJ·mol–1, which show that it has superior catalytic activity. Remarkably, LCUH-101 (Eu, Gd, Tb, and Y) are multifunctional MOFs that can effectively absorb and separate mixed dyes. The appropriate interlayer spacing enables them to efficiently adsorb methylene blue (MB) and rhodamine B (RhB) in aqueous solution, with adsorption capacities of 0.97 and 0.41 g·g–1, respectively, which is one of the highest values among those of the reported MOF-based adsorbers. Meanwhile, LCUH-101 (Eu) can be used for the separation of the dye mixture MB/MO and RhB/MO, and the excellent reusability enables LCUH-101 (Eu) to be used as chromatographic column filters to quickly separate and recover dyes. Therefore, this work provides a new strategy for the exploitation of stable and efficient catalysts for NP reduction and adsorbents for dyes.

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“…In order to reduce the agglutination of metal NPs, scientists found that porous materials, including silica, molecule sieve, porous organic polymers, covalent organic frameworks, and metal−organic frameworks (MOFs), 8−13 can provide more active sites to fix firmly metal NPs into their pores and reduce the aggregation of metal NPs. 14,15 Among above porous materials, MOFs have been investigated deeply by chemists and they have become an excellent support for the loading efficiently of Pd NPs. Meanwhile, many powerful methods of loading Pd NPs have been designed by chemists.…”

Section: Introductionmentioning

confidence: 99%

“…Among the different noble MNPs, zero-valent Pd nanoparticles (Pd NPs) exhibit an excellent catalytic capability for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). , However, due to their high surface energies, Pd NPs are prone to aggregate into larger particles, so it is difficult to control their size within a suitable range. In order to reduce the agglutination of metal NPs, scientists found that porous materials, including silica, molecule sieve, porous organic polymers, covalent organic frameworks, and metal–organic frameworks (MOFs), − can provide more active sites to fix firmly metal NPs into their pores and reduce the aggregation of metal NPs. , Among above porous materials, MOFs have been investigated deeply by chemists and they have become an excellent support for the loading efficiently of Pd NPs. Meanwhile, many powerful methods of loading Pd NPs have been designed by chemists.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Lanthanide Metal–Organic Frameworks as a Platform for Sensing Pollutant and Nitrophenols Reduction

Wang,

Liu,

et al. 2023

Inorg. Chem.

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The discharge of harmful and toxic pollutants in water is destroying the ecosystem balance and human being health at an alarming rate. Therefore, the detection and removal of water pollutants by using stable and efficient materials are significant but challenging. Herein, three novel lanthanide metal−organic frameworks (were solvothermally constructed and structurally characterized. In the three Ln-MOFs, dinuclear metallic clusters {Ln 2 } were connected by deprotonated tetrazol-containing dicarboxylate TZI 3− to obtain a 2D layered framework with a point symbol of {4 2 •8 4 }•{4 6 }. Their excellent chemical and thermal stabilities were beneficial to carry out fluorescence sensing and achieve the catalytic nitrophenols (NPs) reduction. Especially, the incorporation of the nitrogen-rich tetrazole ring into their 2D layered frameworks enables the fabrication of Pd nanocatalysts (Pd NPs@LCUH-104/105/106) and have dramatically enhanced catalytic activity by using the unique metal−support interactions between three Ln-MOFs and the encapsulating palladium nanoparticles (Pd NPs). Specifically, the reduction of NPs (2-NP, 3-NP, and 4-NP) in aqueous solution by Pd NPs@LCUH-104 exhibits exceptional conversion efficiency, remarkable rate constants (k), and outstanding cycling stability. The catalytic rate of Pd NPs@LCUH-104 for 4-NP is nearly 8.5 times more than that of Pd/C (wt 5%) and its turnover frequency value is 0.051 s −1 , which indicate its excellent catalytic activity. Meanwhile, LCUH-105, as a multifunctional fluorescence sensor, exhibited excellent fluorescence detection of norfloxacin (NFX) (turn on) and Cr 2 O 7 2− (turn off) with high selectivity and sensitivity at a low concentration, and the corresponding fluorescence enhancement/quenching mechanism has also been systematically investigated through various detection means and theoretical calculations.

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Metal–Organic Framework Accelerated One-Step Capture and Reduction of Palladium to Catalytically Active Nanoparticles

Cited by 10 publications

References 65 publications

Material Design Strategies for Recovery of Critical Resources from Water

Material Design Strategies for Recovery of Critical Resources from Water

Series of Dual Functional Two-Dimensional RE-OFs for Nitrophenol Reduction and Dye Separation

Two-Dimensional Lanthanide Metal–Organic Frameworks as a Platform for Sensing Pollutant and Nitrophenols Reduction

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