Encapsulation of Metal Nanoparticles within Metal–Organic Frameworks for the Reduction of Nitro Compounds

Navalón, Sergio; Álvaro, Mercedes; Dhakshinamoorthy, Amarajothi; Garcı́a, Hermenegildo

doi:10.3390/molecules24173050

Cited by 18 publications

(15 citation statements)

References 89 publications

(149 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average particle size is found to be 4.5 nm (Figure 1h) which is quite large compared to MOF pores(∼6 Å).This could be due to the local restructuring or destruction of MOF structure [15,44] . Nevertheless, wet‐impregnation route offered strong interaction between SU‐101 and Pd to give smaller sized nanoparticles compared to WCGA route [49,50] …”

Section: Resultsmentioning

confidence: 98%

Hybridization of Palladium Nanoparticles with Aromatic‐Rich SU‐101 Metal‐Organic Framework for Effective Transfer Hydrogenation

et al. 2022

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs) are crystalline porous materials with designable pores. In this study, we loaded Pd nanoparticles onto π-electron rich pores of ellagic acid based SU-101 MOF (Bi 2 O(H 2 O) 2 (C 14 H 2 O 8 ) • nH 2 O) in order to surround Pd active sites with π-electron rich environment. The material has been explored for the transformation of 4-Nitro phenol (4-NP) to 4-Amino phenol (4-AP) using ammonia borane (AB). AB acted as efficient transfer hydrogenation agent compared to NaBH 4 because of its ability to transfer hydrogens at milder conditions.AB is safer and easy to handle compared to molecular hydrogen or NaBH 4 . The Pd NPs are loaded on to SU-101 using two methodologies. One by supporting preformed Pd NPs onto MOF surface (Pd-WCGA/SU-101) and the other by wet impregnation method (Pd/SU-101). The later method yields a material with strong interaction between Pd and SU-101. The Pd/SU-101 exhibited superior activity for 4-NP reduction (turn over frequency = 2421 h À 1 ) using AB due to an enrichment of 4-NP around Pd active sites by π-electron rich pore environment.

show abstract

Section: Resultsmentioning

confidence: 98%

Hybridization of Palladium Nanoparticles with Aromatic‐Rich SU‐101 Metal‐Organic Framework for Effective Transfer Hydrogenation

et al. 2022

View full text Add to dashboard Cite

show abstract

“…7) and PdPt@UiO-66. [275][276][277] Regioselectivity can also be modulated by tuning the structural rigidity of frameworks. Chen et al 278 compared the activity and selectivity for cinnamaldehyde (CAL) hydrogenation to cinnamyl alcohol on Pt nanoparticles enshrouded by ZIF-71 and by ZIF-8 (see Fig.…”

Section: Tuning Catalytic Activity and Selectivitymentioning

confidence: 99%

MOF-enabled confinement and related effects for chemical catalyst presentation and utilization

et al. 2022

View full text Add to dashboard Cite

show abstract

“…[ 154 ] The nature of interactions and excitation/emission wavelengths alters the detection selectivity for small molecules in different media. [ 155 ]…”

Section: Role Of Noncovalent Interactions In the Luminescence‐based Sensing Mechanismmentioning

confidence: 99%

Mechanistic Insight into Charge and Energy Transfers of Luminescent Metal–Organic Frameworks Based Sensors for Toxic Chemicals

Mohan

Kumar

et al. 2021

Advanced Sustainable Systems

View full text Add to dashboard Cite

The success of MOFs has driven their development as a new tool for sensing analytes including toxic chemicals. [19][20][21] The MOF sensors can be applied in both environmental and biological systems. [22] The MOF sensor field has been established with the development of sensors for different metal ions, anions, and molecules. [23,24] The potential application of MOF sensors to the detection of heavy metal ions, toxic anions, and other hazardous species is of great interest. [25,26] Specifically, luminescence technology has allowed the roles of various MOF sites in analyte capture to be easily studied. [27][28][29] The precise use of MOFs is potentially a good tool for analyte detection. Furthermore, MOFs have been established as potential materials for selective, fast, and portable tools for sensing toxic chemicals, with the advantage of light-emitting properties. [30,31] Interestingly, these sensing models can operate in water and are pH stable with high efficiency. [32] Furthermore, MOFs are wellknown materials for the degradation of toxic chemicals. [33,34] Several reports have been published on MOF sensors for toxicant chemicals, such as metal ions, anions, organic solvents, pesticides, nitroaromatic compounds (NACs), chemical warfare agents, [35] and others. [36][37][38] Some reviews have summarized applications of MOFs in sensing and detection probes for ions and volatile organic compounds, [39] and MOF sensors in pesticide detection and absorption with their classification. [40] Others have summarized and analyzed interactions between hazardous compound adsorbates and MOFs. [41,42] The stability and applications of MOFs have been summarized by the research groups of Ding and coworkers. [43] Pehlivan and et al. summarized the role of fluorescence resonance energy transfer in elucidating molecular interactions utilized in biosensing tools. [44,45] Besides luminescence sensing, the reviewers summarized the progress of MOFs relevance in the various area including environment and medical science. [46] Recently, Liu and coworkers summarized the progress of MOFs and discussed the remaining challenges in drug delivery, [47] Garcia and coworkers studied and compared the MOFs as photocatalysts with common inorganic photocatalysts, [48] and Manos and coworkers studied and summarized MOFs challenges and prospects for ion-exchange and sorption applications. [49] Despite these meaningful reviews, the factors responsible for signal changes, mechanisms, and limits of detection have Mechanistic studies of materials able to detect hazardous and toxic chemicals, such as common organic solvents, pesticides, and nitroaromatic compounds (NACs), are critically important owing to the threat they pose to humans and the environment. Recently, porous luminescent metal-organic frameworks (MOFs) with multifunctional sites, high surface areas, and structural tunability have emerged as sensory devices for the detection of hazardous and toxic chemicals. Herein, recent progress regarding the mechanistic behavior of MOF sensors in the det...

show abstract

Encapsulation of Metal Nanoparticles within Metal–Organic Frameworks for the Reduction of Nitro Compounds

Cited by 18 publications

References 89 publications

Hybridization of Palladium Nanoparticles with Aromatic‐Rich SU‐101 Metal‐Organic Framework for Effective Transfer Hydrogenation

Hybridization of Palladium Nanoparticles with Aromatic‐Rich SU‐101 Metal‐Organic Framework for Effective Transfer Hydrogenation

MOF-enabled confinement and related effects for chemical catalyst presentation and utilization

Mechanistic Insight into Charge and Energy Transfers of Luminescent Metal–Organic Frameworks Based Sensors for Toxic Chemicals

Contact Info

Product

Resources

About