Extraction of palladium from nuclear waste-like acidic solutions by a metal–organic framework with sulfur and alkene functions

Zha, Mei-Qin; Liu, Jie; Wong, Yan-Lung; Xu, Zhengtao

doi:10.1039/c4ta06678b

Cited by 91 publications

(47 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This provides a theoretical basis of applying UiO-66 in water treatment. Thus far, a few researchers have employed UiO-66 framework to capture contaminants in water solution 27 41 42 43 44 , but no reports appeared in any journals on arsenic removal.…”

mentioning

confidence: 99%

Superior removal of arsenic from water with zirconium metal-organic framework UiO-66

Wang

Liu

Chen

et al. 2015

Sci Rep

314

176

View full text Add to dashboard Cite

In this study, water stable zirconium metal-organic framework (UiO-66) has been synthesized and for the first time applied as an adsorbent to remove aquatic arsenic contamination. The as-synthesized UiO-66 adsorbent functions excellently across a broad pH range of 1 to 10, and achieves a remarkable arsenate uptake capacity of 303 mg/g at the optimal pH, i.e., pH = 2. To the best of our knowledge, this is the highest arsenate As(V) adsorption capacity ever reported, much higher than that of currently available adsorbents (5–280 mg/g, generally less than 100 mg/g). The superior arsenic uptake performance of UiO-66 adsorbent could be attributed to the highly porous crystalline structure containing zirconium oxide clusters, which provides a large contact area and plenty of active sites in unit space. Two binding sites within the adsorbent framework are proposed for arsenic species, i.e., hydroxyl group and benzenedicarboxylate ligand. At equilibrium, seven equivalent arsenic species can be captured by one Zr6 cluster through the formation of Zr-O-As coordination bonds.

show abstract

mentioning

confidence: 99%

Superior removal of arsenic from water with zirconium metal-organic framework UiO-66

Wang

Liu

Chen

et al. 2015

Sci Rep

314

176

View full text Add to dashboard Cite

show abstract

“…The use of hard or borderline Lewis acids, such as zirconium(IV) or zinc(II), with linkers possessing thioether groups ortho to the dicarboxylate donors typically leads to the formation of UiO [ 32 ] or IRMOF structure types [ 33 ], in which the sulfur donors are not employed due to the coordination mismatch. For the mercapto-containing linker 2,5-dimercaptobenzene dicarboxylic acid (DMBDC), MOF-74, and UiO analogues were prepared with Fe and Zr as the metals, respectively [ 34 , 35 ].…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, given the ease by which MOFs based on linear dicarboxylate linkers can be reticulated, coupled with the understanding that the thioether substituent plays an important stabilizing (and even templating) role, we propose that there is scope to form a family of materials based on the structure reported here. Isoreticulation of (Ag 2 (ASBDC)), resulting in a larger diameter pore, could allow the realization of permanent porosity, and provide access to the thioester and allyl functionalities, likely useful for sequestration of heavy metals [ 32 , 33 ].…”

Section: Discussionmentioning

confidence: 99%

A Stable Coordination Polymer Based on Rod-Like Silver(I) Nodes with Contiguous Ag-S Bonding

2020

View full text Add to dashboard Cite

Silver(I)-based coordination polymers or metal-organic frameworks (MOFs) display useful antibacterial properties, whereby distinct materials with different bonding can afford control over the release of silver(I) ions. Such silver(I) materials are comprised of discrete secondary building units (SBUs), and typically formed with ligands possessing only soft or borderline donors. We postulated that a linker with four potential donor groups, comprising carboxylate and soft thioether donors, 2,5-bis (allylsulfanyl) benzene dicarboxylic acid (ASBDC), could be used to form stable, highly connected coordination polymers with silver(I). Here, we describe the synthesis of a new material, (Ag2(ASBDC)), which possesses a rod-like metal node-based 3D honeycomb structure, strongly -stacked linkers, and steric bulk to protect the node. Due to the rod-like metal node and the blocking afforded by the ordered allyl groups, the material displays notable thermal and moisture stability. An interesting structural feature of (Ag2(ASBDC)) is contiguous Ag–S bonding, essentially a helical silver chalcogenide wire, which extends through the structure. These interesting structural features, coupled with the relative ease by which MOFs made with linear dicarboxylate linkers can be reticulated, suggests this may be a structure type worthy of further investigation.

show abstract

“…To date, carbon nanotubes, polymer resins, porous silica, zeolite, or metal organic frameworks (MOFs) etc. are categorized as commonly used support materials of adsorbent 7) . Organic ligands which can provide binding ability to certain metal ions are generally impregnated into the pores of support materials or grafted/immobilized onto their surfaces 8,9) .…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behaviors of Palladium(II) in Simulated High-Level Liquid Waste Using 2,2’-[(2-ethylhexyl)imino]bis[<i>N</i>,<i>N</i>-bis(2-ethylhexyl)acetamide]-impregnated Adsorbent

Kubota

Osawa

et al. 2021

J.I.E.

View full text Add to dashboard Cite

A hybrid donor compound 2,2'-[(2-ethylhexyl)imino]bis[N,N-bis(2-ethylhexyl)acetamide] (DAMIA-EH) impregnated silicabased adsorbent [(DAMIA-EH+1-dodecanol)/SiO 2-P] was prepared. Its adsorption performance toward Pd(II) in nitric acid solution was investigated by examining the effect of contact time, temperature etc. It was found that the adsorption rate of Pd(II) was fairly fast and can reach a constant state within only 10 min. (DAMIA-EH+1-dodecanol)/SiO 2-P exhibited an excellent recognition ability toward Pd(II) than other 14 types of co-existing metal ions and could maintain this selectivity when the concentration of HNO 3 varied from 0.5 to 5 M. On the other hand, the maximum adsorption amount of Pd(II) was calculated to be as high as 0.440 mmol/g when [HNO 3 ] = 2 M. Moreover, with increasing the temperature in solution, the uptake ratio of Pd(II) slightly decreased, it still exhibited a dominant selectivity toward Pd(II) in a wide temperature range from 288 to 323 K. The fitted thermodynamic parameters revealed that the adsorption process of Pd(II) was exothermic in nature and happened spontaneously.

show abstract

Extraction of palladium from nuclear waste-like acidic solutions by a metal–organic framework with sulfur and alkene functions

Abstract: Hard-and-soft combo does the trick: hard and robust Zr(iv)-carboxylate nodes build up the net, while soft allyl and sulfur donors selectively extract Pd(ii)-from amongst other elements in nuclear wastes.

Cited by 91 publications

References 64 publications

Superior removal of arsenic from water with zirconium metal-organic framework UiO-66

Superior removal of arsenic from water with zirconium metal-organic framework UiO-66

A Stable Coordination Polymer Based on Rod-Like Silver(I) Nodes with Contiguous Ag-S Bonding

Adsorption Behaviors of Palladium(II) in Simulated High-Level Liquid Waste Using 2,2’-[(2-ethylhexyl)imino]bis[<i>N</i>,<i>N</i>-bis(2-ethylhexyl)acetamide]-impregnated Adsorbent

Contact Info

Product

Resources

About