Copper‐modified ceria catalysts, (CuO)x/Ce0.9Cu0.1O2 nanospheres, for low‐temperature CO oxidation were fabricated simply by using the hydrothermal synthesis of Cu‐doped CeO2 (Ce0.9Cu0.1O2) nanospheres followed by deposition of CuO over Ce0.9Cu0.1O2. The X‐ray diffraction and electron spectroscopy characterizations demonstrated that the as‐prepared nanospheres were composed of cubic CeO2 and monoclinic CuO with a typical diameter of around 70 nm. Moreover, the X‐ray photoelectron spectroscopy (XPS) analysis illustrated the coexistence of Ce4+/Ce3+ and Cu2+/Cu+ redox couples in (CuO)x/Ce0.9Cu0.1O2 and H2 temperature‐programmed reduction (TPR) measurements indicated the excellent reduction behavior of the catalyst. The Raman spectra illustrated the oxygen vacancy in (CuO)0.3/Ce0.9Cu0.1O2, and diffuse‐reflectance infrared Fourier transform spectroscopy (DRIFTS) demonstrated the stable existence of Cu+ species during CO oxidation. The (CuO)x/Ce0.9Cu0.1O2 nanospheres showed excellent catalytic activity toward CO oxidation in normal feed gas (volume ratio of CO/O2/N2=1:10:89) at ambient temperature. Catalytic tests revealed that the proportion of CuO in the final product has a strong influence on the resultant catalytic activities. The (CuO)x/Ce0.9Cu0.1O2 nanospheres hold great application potential as new catalysts for CO oxidation.

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e decay resistance of wood can be improved via a vacuum heat treatment. e amount of nutrients from cellulose, hemicellulose, and lignin and amount of sugars needed by the fungi during their growth were investigated. e results showed that the absorbance peaks corresponding to absorbed CH 3 -CH 2 -, C�O, and the benzene ring skeleton stretching vibration all noticeably weakened with increased heat treatment. is indicated that the cellulose, hemicellulose, and lignin degraded to varying degrees. e specimens with a higher initial moisture content (MC) showed greater amounts of nutrient degradation after 2 h at the same heat treatment temperature. e chemical analysis results were in good agreement with the Fourier transform infrared (FTIR) analysis results. e decay resistance tests showed that the average mass loss of the heat-treated specimens was up to 10.8%, in contrast to 22.23% for the untreated specimens. Furthermore, the FTIR analysis of the heat and decay-resistance test showed that the vibration wave peaks that corresponded to CH 3 -CH 2 -at 2954 cm −1 showed noticeably less separation at higher heating temperature. is demonstrated that the cellulose hydrolysis in the wood decreased at higher heating temperatures, which explained why the decay resistance increased with increased heat treatment.