[논문]Synthesis and catalytic properties of a novel copper- and manganese-substituted cerium dioxide for benzene remediation

Yang, Jae Hwan; You, Jeong Hyun

doi:10.1177/1747519820945884

[해외논문] Synthesis and catalytic properties of a novel copper- and manganese-substituted cerium dioxide for benzene remediation 원문보기

Journal of chemical research, v.45 no.5/6, 2021년, pp.545 - 550

Yang, Jae Hwan (Department of Environmental Engineering, Chungnam National University, Daejeon, Republic of Korea) , You, Jeong Hyun (Department of Environmental Engineering, Chungnam National University, Daejeon, Republic of Korea)

Abstract ▼ AI-Helper

Catalysts based on inexpensive and abundant transition metals are necessary for effective environmental remediation. In this study, a series of CuMn-CeO2 catalysts is synthesized by a simple coprecipitation method. The properties of the as-prepared catalysts are characterized by X-ray diffraction, Brunauer-Emmett-Teller analysis, scanning electron microscopy-energy-dispersive spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The introduction of dopants results in rougher surfaces with greater surface areas and pore volumes as well as more surface defects. Furthermore, the dopant-added catalysts exhibit higher activities for benzene oxidation, as the temperature required for 90% benzene removal with Cu4Mn1-CeO2 (656 K) was 231 K lower than that required with CeO2. The superior performance of the dopant-added CeO2 catalyst is attributed to the generation of defect-rich surfaces due to the isomorphous substitution of Cu and Mn in the crystal lattice of CeO2.

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