Reaction: Goal-Oriented PAF Design for Uranium Extraction from Seawater

Guangshan Zhu received his BSc (1993) and PhD (1998) degrees in chemistry from Jilin University. He is now a full professor at Northeast Normal Driven by the demands sustainable energy environments, current research interest focuses on design synthesis of porous aromatic frameworks for gas adsorption, separation, uranium capture. The utilization nuclear power mature technology with high capacity factor persistent output. Therefore, it considered one top contenders clean sources. Power generation worldwide plants has kept steady pace past two decades, robust growth expected future. In China, made great contributions to domestic electricity production; its power-generating 49 GW, target 150 GW 2035.1China Nuclear Energy Association (2020). Report Development China’s Energy. http://www.china-nea.cn/site/content/38423.html.Google Scholar main fuel resource uranium, supply key dominating factors production. However, terrestrial reserves are far satisfying increasing global consumption. Under circumstances, extraction seawater (UES) becoming potential process sufficient fuels durative production because total content 1,000 times more than reserves. exists an extremely low concentration ca. 3.3 parts per billion (ppb), whereas many other metal cations much higher concentrations would severely affect competitive adsorption. their Catalysis piece,2Kushwaha S. Patel K. Uranium seawater: paradigm shift recovery.Chem. 2021; 7: 271-274Abstract Full Text PDF Scopus (4) Google Kushwaha have given insight into UES progress discussed criteria adsorbent design. Uranium-extracting performance closely associated multiple synergy, including property accessibility uranium-capturing sites, porosity adsorbents, tolerance adsorbents seawater, extrinsic driving forces that speed up diffusion. order achieve capacity, rational should be carried out three goals, namely (1) selectivity over abundant competing metals, (2) fast mass transport species within (3) availability reliability adsorbents. Porous (PAFs) family nanoporous solids extended networks. Typically, they constructed carbon-carbon-linked rigid building units.3Tian Y. G. (PAFs).Chem. Rev. 2020; 120: 8934-8986Crossref PubMed (122) Because insufficient stacking units, PAFs exhibit surface area comparable material series, such as covalent organic metal-organic frameworks. Meanwhile, carbon-carbon linkages between units give exceptional stability toward severe conditions chemical treatment or harsh hydrolytic environments. Diverse functionalities readily obtained either direct designed post-modification introduce desired active sites. provided opportunities goals. majority interact through coordinating groups, especially oximes amidoximes. But these coordination sites also bind vanadium. recognition, molecular imprinting strategy been developed molecule. were coupled form specific chelating uranyl. molecularly imprinted exhibited uranyl 37.28 mg g?1, capacities interfering metals below 0.05 g?1.4Yuan Yang Ma X. Meng Q. Wang L. Zhao Molecularly composite components selective ions.Adv. Mater. 2018; 30: e1706507Crossref (134) It turns construction PAFs’ void space available. uranyl-templated bis-salicylaldoxime site was immobilized PAF-1.5Yuan Faheem M. Li Z. Deng D. Sun F. H. Huang et al.A template designing framework materials capture.ACS Cent. Sci. 2019; 5: 1432-1439Crossref (32) MISS-PAF-1 able ions 79.8 which least 100 Moreover, porosity, most accessible, real 5.79 close 6 g?1 multiple-cycle used intersecting channels boost number accessible capture promote there lack gradient propels movement PAF-seawater interface PAF inner surface. To diffusion, electric field applied external force. A conductive polymer incorporated situ polymerization.6Wang R. Sha Ruan Zou Yuan Constructing ion pathway seawater.Chem. 6: 1683-1691Abstract (29) not only attracted but sped migration inside PAFs. As result, conductive-media-modified 2–3 orders magnitude rate constants reported synergy uranium-selective leads record-high 13.0 ± 0.5 56 days 16.5 0.4 90 days. binding polymer-based usually embedded polymeric chains, leading decreased utilization. open exposed tough bonds guarantee recyclability reusability seawater. significant advantages kinetics. organometallic catalysts tailored syntheses increase cost, thus hindering practical applications. view commercially affordable process, inexpensive benzene derivatives Lewis-acid-catalyzed Scholl reactions employed.7Li amidoxime-modified architecture cost-effective efficient extraction.Chem. 11: 4747-4752Crossref introduced numerous amidoxime frameworks, PAF-170-AO 60% available Furthermore, good compatibility matrixes fabricate ceramic sheets uses. cost extracting 1 kg can reduced US$189.77, uranium. conclude, feature architectures, chemically amenable fragments, areas. These ensure goal-oriented promising viable PAF-based improved adsorptive kinetic efficiency anticipated. Some basic principles effective established, new synthetic strategies mechanisms awaiting further exploration. author grateful financial support National Natural Science Foundation China (grants 21531003 , 21601031 91622106 ) “111” project ( B18012 ). Reaction: Organic Polymers CaptureCafer T. YavuzChemFebruary 11, 2021In BriefUranium recovery uranium-extraction method could provide needed resources low-carbon widescale implementation recovery, issues scale must addressed. this reaction piece, Yavuz explores help recovery. Full-Text Catalyst: Extraction Seawater, Paradigm Shift Resource RecoveryKushwaha al.ChemFebruary BriefNuclear energy, route lowering greenhouse emissions, play critical role transition supplies ore limit unless alternative methods employed. This article highlights development discussing future goals discovery methods. Semiconducting MOFs Offer New Strategy SeawaterLi important separations society oceanic enable expansion discuss (MOFs) Engineer Biology UraniumSun BriefCost scalability remain major hurdles facing existing technologies repurposing biological systems overcome obstacles. protein engineering sustainably mine