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Synthesis and characterization of ceria nanoparticles by complex-precipitation route

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  • Received: 23 April 2020Revised: 17 June 2020Accepted: 22 June 2020Available online: 24 June 2020
  • Ceria (CeO2) nanoparticles have been successfully synthesized via a simple complex-precipitation route, which employs cerium chloride as cerium source and citric acid as precipitant. The elemental analysis results of carbon, hydrogen, oxygen and cerium in the precursors were calculated, and the results revealed that the precursors were composed of Ce (OH)3, [Ce(H2Cit)3] or [CeCit]. X-ray diffraction (XRD) analysis showed all ceria nanoparticles prepared to be face centered cubic structure. As n value was 0.25 and pH value was 5.5, the specific surface area of the sample reached the maximum value of 83.17 m2/g. Ceria nanoparticles were observed by scanning electron microscope (SEM). Selected electron diffraction patterns of some samples were obtained by transmission electron microscope (TEM), and the crystal plane spacing of each low-exponential crystal plane was calculated. The UV-vis transmittance curve shows that it has the ability to absorb ultraviolet light and pass through visible light. Among all samples, the minimum of the average transmittance of UVA (TUVA) is 4.42%, and the minimum of the average transmittance of UVB (TUVB) is 1.56%.
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Synthesis and characterization of ceria nanoparticles by complex-precipitation route

Abstract: Ceria (CeO2) nanoparticles have been successfully synthesized via a simple complex-precipitation route, which employs cerium chloride as cerium source and citric acid as precipitant. The elemental analysis results of carbon, hydrogen, oxygen and cerium in the precursors were calculated, and the results revealed that the precursors were composed of Ce (OH)3, [Ce(H2Cit)3] or [CeCit]. X-ray diffraction (XRD) analysis showed all ceria nanoparticles prepared to be face centered cubic structure. As n value was 0.25 and pH value was 5.5, the specific surface area of the sample reached the maximum value of 83.17 m2/g. Ceria nanoparticles were observed by scanning electron microscope (SEM). Selected electron diffraction patterns of some samples were obtained by transmission electron microscope (TEM), and the crystal plane spacing of each low-exponential crystal plane was calculated. The UV-vis transmittance curve shows that it has the ability to absorb ultraviolet light and pass through visible light. Among all samples, the minimum of the average transmittance of UVA (TUVA) is 4.42%, and the minimum of the average transmittance of UVB (TUVB) is 1.56%.

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