Highly efficient metal organic framework (MOF)-based copper catalysts for the base-free aerobic oxidation of various alcohols

Taher, Abu; Kim, Dong Wook; Lee, Ik-Mo

doi:10.1039/c6ra28743c

Cited by 60 publications

(26 citation statements)

References 59 publications

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“…The Cu 2p spectrum shows two peaks at 953.5 and 933.8 eV, corresponding to Cu 2p 1/2 and Cu 2p 3/2 of Cu(II), respectively (Figure S7a, Supporting Information). [ 24,25 ] The N 1s spectrum shows the presence of a split with maxima at 401.4 and 399.4 eV (Figure S7b, Supporting Information), suggesting strong coordination with Cu(II) and partial charge transfer from nitrogen lone pair to copper. [ 26,27 ] In the Cl 2p spectrum, the two peaks at 199.3 and 197.7 eV corresponds to Cl 2p 1/2 and Cl 2p 3/2 , respectively (Figure S7c, Supporting Information).…”

Section: Methodsmentioning

confidence: 99%

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

et al. 2020

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The earth's atmosphere houses an enormous amount of water, which could be effectively exploited for a plethora of applications. While the development of materials for harnessing this abundant resource has gained impetus in recent years, limited efforts have been devoted to in‐depth research on their agricultural applications. Herein, a novel copper(II)–ethanolamine complex (Cu‐complex), which has a maximum water uptake of up to 300% and a water production rate of 2.24 g g−1 h−1 under natural sunlight, is reported. As a proof‐of‐concept application, using this material, a fully automated and self‐sustainable solar‐powered SmartFarm device is developed. The Cu‐complex harvests atmospheric water during the night, stores the adsorbed water within, and efficiently releases the adsorbed water during the day when the device is exposed to sunlight. The water harvesting and irrigation process can be fine‐tuned to suit different types of plants and local climates for an optimal cultivation. With the SmartFarm in operation, the demand for freshwater for irrigation could be greatly reduced and urban farming techniques such as large‐scale rooftop farming could be promoted with a view of alleviating both water and food scarcity in the near future.

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Section: Methodsmentioning

confidence: 99%

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

et al. 2020

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“…82 This amine functionalized MOF was treated with CuCl2 to obtain Cu(II)/MOF-NH2 composite ( Figure 10) and its activity in the oxidation of BA in the presence of TEMPO evaluated. 55 Under the optimized reaction conditions, Cu(II)/MOF-NH2 and TEMPO as co-catalyst afforded in acetonitrile under air atmosphere at 70 o C complete BA conversion. In contrast, MOF-N3 and MOF-NH2 gave no conversion of BA, which confirmed that the oxidation of BA to benzaldehyde is catalysed by Cu.…”

Section: With Permission From Wileymentioning

confidence: 95%

Tuneable nature of metal organic frameworks as heterogeneous solid catalysts for alcohol oxidation

2017

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Selective benzyl alcohol oxidation (BA) to benzaldehyde has been frequently used as a benchmark reaction to evaluate the catalytic activity of metal organic frameworks (MOFs) as oxidation catalysts. Substituted BAs, and aliphatic and allylic alcohols have also been often used as substrates in these studies. In the present review, the current state of the art of MOFs as heterogeneous catalysts for the oxidation of BA and other alcohols is described, grouping the reports according to the nature of the active sites present on the MOFs. Thus, MOFs in which the catalytic centres are located at the ligands, at metallic nodes, or at metal nanoparticles (MNPs) incorporated within the MOF pores and photoassisted oxidations have been commented on. The aim of this review is to stress the current limitations encountered in the use of MOFs, particularly with respect to MOF stability and activity and propose new targets in the area.

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“…X-ray photoelectron spectroscopy (XPS) possesses untapped potential to ascertain whether emission-quenching molecules are adsorbed to the MOF surfaces or possibly internalized within the pores. XPS can determine metal oxidation states in MOFs 18,19 and MOF composites, 20 as well as quantify catalyst decomposition due to side-reactions. 21 XPS is sensitive to near-surface chemical environments, 22 and angle-resolved XPS (ARXPS) further utilizes the attenuation of sub-surface electrons to quantify surface vs. bulk contributions to a photoelectron spectrum.…”

Section: Introductionmentioning

confidence: 99%

Detection of adsorbates on emissive MOF surfaces with X-ray photoelectron spectroscopy

et al. 2019

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Highly efficient metal organic framework (MOF)-based copper catalysts for the base-free aerobic oxidation of various alcohols

Abstract: Copper containing metal organic frameworks (MOFs) are found to be highly efficient heterogeneous catalysts for alcohol oxidation.

Cited by 60 publications

References 59 publications

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

A Moisture‐Hungry Copper Complex Harvesting Air Moisture for Potable Water and Autonomous Urban Agriculture

Tuneable nature of metal organic frameworks as heterogeneous solid catalysts for alcohol oxidation

Detection of adsorbates on emissive MOF surfaces with X-ray photoelectron spectroscopy

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