title: A Water-Stable Cationic Metal-Organic Framework as a Dual Adsorbent of Oxoanion Pollutants.
abstract: A three-dimensional water-stable cationic metal-organic framework (MOF) pillared by a neutral ligand and with Ni(II)  metal nodes has been synthesized employing a rational design approach. Owing to the ordered arrangement of the uncoordinated tetrahedral sulfate (SO4 (2-) ) ions in the channels, the compound has been employed for aqueous-phase ion-exchange applications. The compound exhibits rapid and colorimetric aqueous-phase capture of environmentally toxic oxoanions (with similar geometries) in a selective manner. This system is the first example of a MOF-based system which absorbs both dichromate (Cr2 O7 (2-) ) and permanganate (MnO4 (-) ) ions, with the latter acting as a model for the radioactive contaminant pertechnetate (TcO4 (-) ).
authors: Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors: Aamod V
authors: AV
authors: Desai
authors: Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors: Biplab
authors: B
authors: Manna
authors: Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors: Avishek
authors: A
authors: Karmakar
authors: Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India.
authors: Amit
authors: A
authors: Sahu
authors: Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India. sghosh@iiserpune.ac.in.
authors: Sujit K
authors: 0000-0002-1672-4009
authors: SK
authors: Ghosh
mesh_terms: D000327:Adsorption; D000838:Anions / Q000302:isolation & purification; D002412:Cations / Q000737:chemistry; D002840:Chromates / Q000302:isolation & purification*; D017895:Manganese Compounds / Q000302:isolation & purification*; D000073396:Metal-Organic Frameworks / Q000737:chemistry*; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D010087:Oxides / Q000302:isolation & purification*; D013670:Sodium Pertechnetate Tc 99m / Q000302:isolation & purification*; D014867:Water / Q000737:chemistry; D014873:Water Pollutants / Q000302:isolation & purification*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D014875:Water Pollutants, Radioactive / Q000302:isolation & purification
chemical_list: D000838:Anions; D002412:Cations; D002840:Chromates; D017895:Manganese Compounds; D000073396:Metal-Organic Frameworks; D010087:Oxides; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D014875:Water Pollutants, Radioactive; D014867:Water; C048856:permanganic acid; D009532:Nickel; D013670:Sodium Pertechnetate Tc 99m
keywords: adsorption; anions; environment chemistry; metal-organic frameworks; sensors