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Three CeO_2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide(2-CEES) degradation. The samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller method, and temperature-programmed CO_2 desorption. It was found that morphologies of CeO_2 could strongly affect the surface properties and the 2-CEES degradation activities. The surface basicity and the continuous 2-CEES degradation activity of spindle-like CeO_2 were much better than those of the other CeO_2 samples, although all the samples had identical chemical compositions. That was benefited by the largest surface area, abundant microcracks, and surface oxygen vacancies of the spindle-like CeO_2.
Three samples of CeO_2 with different morphologies, ie, cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide (2-CEES) degradation. The samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction , X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller method, and temperature-programmed CO_2 desorption. It was found that morphologies of CeO 2 could strongly affect the surface properties and the 2-CEES degradation activities. The surface basicity and the continuous 2 -CEES degradation activity of spindle-like CeO 2 were much better than those of the other CeO 2 samples, although all the samples had identical chemical compositions. That was benefited by the largest surface area, abundant microcracks, and surface oxygen vacancies of the spindle-like CeO_2.