title: Well-studied Cu-BTC still serves surprises: evidence for facile Cu2+/Cu+ interchange.
abstract: Cu-BTC (also known as HKUST-1) is a well-characterized metal-organic framework material produced in an industrial scale and widely studied for a number of potential applications by the scientific community. The co-existence of Cu(+) and Cu(2+) entities has already been observed in this material, but the presence of Cu(+) ions was attributed to oxide impurities. The results presented here clearly demonstrate that Cu(+) ions can be present in high concentrations inside the hybrid structure. Furthermore, switching between the two copper oxidation states can be induced by redox treatments, using vacuum and/or reducing gases at different sample temperatures.
authors.affiliation: Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
authors.forename: Janos
authors.initials: J
authors.lastname: Szanyi
authors.forename: Marco
authors.initials: M
authors.lastname: Daturi
authors.forename: Guillaume
authors.initials: G
authors.lastname: Clet
authors.forename: Donald R
authors.initials: DR
authors.lastname: Baer
authors.forename: Charles H F
authors.initials: CH
authors.lastname: Peden
mesh_terms: D000327:Adsorption; D002248:Carbon Monoxide / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D000073396:Metal-Organic Frameworks; D009569:Nitric Oxide / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D013696:Temperature
chemical_list: D000073396:Metal-Organic Frameworks; D009942:Organometallic Compounds; C539834:bis(1,3,5-benzenetricarboxylate)tricopper(II); D009569:Nitric Oxide; D003300:Copper; D002248:Carbon Monoxide