1/9/2024 0 Comments Copper cobalt oxideThe best sensitivity properties of nanosensors have been found at the mole ratios of Cu/Co of 0.125 and 0.15. Also, gas-sensing measurements reveal that the optimal operating temperature is 300 0C, that the use of Cu as a dopant improved the sensing properties of cobalt oxide and that the sensitivity increased considerably with Cu concentration. On the basis of TEM images, it is found that these particles possess a cubic structure with nearly uniform distribution. Therefore, Section 3 summarizes the research status of cobalt oxide, manganese oxide, and copper oxide along with the corresponding doped systems. By XRD analysis, we confirm that Co 3O 4 and (CuO 0.3CoO 0.7) Co 2O 4 phases are formed and mean grain size is decreased with increasing Cu doping (from 28 to 24 nm). The structural properties and morphology of the powders were studied by x-ray diffraction (XRD), Fourier transform infrared spectroscopy and transmission electron microscopy (TEM). Geological Surveyī4266727a1fa27113042ab3fa05256fa1b600a7b9bd608d3f8810fffd1b65b27ĭidn't find what you're looking for? Suggest a dataset here.In this paper, nanoparticles of copper-cobalt compound oxide have been prepared by the sol-gel technique with different mole ratios of Cu/Co (ranging from 0.05 to 0.15) for the detection of methane gas, which is chemically a very stable hydrocarbon. The surface compositions of Cu 0.6 Co 0.4 OCN, CuO x CN, and CoO x CN show that C 1s, N 1s, O 1s Co 2p, and Cu 2p exist in corresponding catalysts with the binding energies of 285.5, 399.9, 532.0, 782.5. Harvested from DOI EDI Other Data Resources This fact provides solid evidence that the synergy of copper and cobalt does not derive from the modulation of their electronic structure. Francois terrane, southeastern Missouri: Missouri Department of Natural Resources Report of Investigations 64, 58 p. >Kisvarsanyi, E.B., 1981, Geology of the Precambrian St. The data of the IOCG-REE_GX were checked for accuracy regarding sample location, sample media type, and analytical methods used. Data from the first phase are currently maintained in the USGS National Geochemical Database (NGDB), and data from the second phase will soon be added. These coded data provide a robust tool for evaluating the regional geologic setting of the host terrane as well as assessing the character of hydrothermal alteration related to many of the contained mineral deposits. In order to facilitate examination of the geochemistry of the broad range of samples reported (i.e., regional samples, ore zone, or ore deposit alteration-related), a short sample description is given and each sample is coded (Jcode) according to the type of rock suites defined by Kisvarsanyi (1981), whether the sample was collected as a non-ore deposit-related representative of a given rock suite or as a deposit-related sample (Kcode, and if the sample was related to a specific ore deposit the zone within the given deposit was included (Lcode. The data presents the most precise analytical approach to report the best value for each element. During the second phase from 2013-2015, 119 samples were collected and analyzed, and 23 samples from the first phase were reanalyzed using analytical methods of higher precision. Gold oxide black powder precious metal gold(III) oxide auric oxide hydroxide. In the first phase, the USGS collected and analyzed 315 samples from 1989 to 1995. cobalt (III) (cobaltic) cobalt (IV) copper (I) (cuprous) copper (II) (cupric). Francois Mountains terrane made by the U.S. The analytical results were determined by 24 laboratory analytical methods on 457 rock samples collected during two phases from outcrop and drill core sites from throughout the entire St. This relational database serves as a data archive in support of present and future geologic and geochemical studies of IOCG-REE type deposits, and contains data tables in two different formats describing historical and new quantitative and qualitative geochemical analyses. IOCG-REE_GX was created and designed to compile whole-rock and trace element data from southeast Missouri in order to facilitate petrologic studies, mineral resource assessments, and the definition and statistics of geochemical baseline values. The Geochemical Database for Iron Oxide-Copper-Cobalt-Gold-Rare Earth Element Deposits of Southeast Missouri (IOCG-REE_GX) contains new geochemical data compilations for samples from IOCG-REE type deposits in which each rock sample has one "best value" determination for each analyzed species, greatly improving speed and efficiency of use.
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