Synthesis and spectroscopic characterisation of aurichalcite (Zn,Cu2+)5(CO3)2(OH)6 -implications for Cu-ZnO catalysts
Frost, Ray L., Reddy, B. Jagannadha, & Locke, Ashley (2008) Synthesis and spectroscopic characterisation of aurichalcite (Zn,Cu2+)5(CO3)2(OH)6 -implications for Cu-ZnO catalysts. Transition Metal Chemistry, 33(3), pp. 331-339.
The Cu-ZnO catalysts with variable Cu/Zn ratio, between Zn-rich and Cu-rich compositions have been investigated by a combination of electronic and vibrational spectra. Synthesized catalysts exhibit two d-d transition bands of Cu2+ ions in a distorted octahedral symmetry, at 7600 and 12900 cm-1 (1315 and 775 nm). The effect of structural cations substitution (Zn2+ and Cu2+) on band shifts observed in spectra of the synthetic samples. The observation of two broad features at ~7600 and 12900 cm-1 (1315 and 775 nm) is a strong indication for Zn2+ substitution by Cu2+ ions. The result of multiple bands in the symmetric stretching and bending regions confirms the reduction of symmetry from D3h to C2v/Cs for (CO3)2- ion in aurichalcite. The synthetic aurichalcite may be used as a standard for identification of spectral properties of naturally occurring anhydrous carbonate minerals.
Impact and interest:
Citation countsare sourced monthly fromand citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
Repository Staff Only: item control page