Kyushu Institute of Technology Academic Repository
Kyutacarは九州工業大学で生産された研究成果を オープンアクセスで提供する機関リポジトリシステムです。 Kyutacar is open-access repository of research by members of the Kyushu Institute of Technology.
School of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 (P.R. China)
School of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 (P.R. China)
SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Shenzhen University, Shen Zhen, 518060, (P.R. China)
School of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 (P.R. China)
School of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 (P.R. China)
Department of Applied Chemistry, Kyushu Institute of Technology Kitakyushu 804-8550 (Japan)
抄録
The hydrothermal method is widely applied in nanomaterials synthesis, and most of the influencing factors have already been taken into account. However, the effect of atmosphere in solution on the performance of nanomaterials has been underestimated for a long time. In this article, reaction solvents were saturated with three classical gases (argon, oxygen, and carbon dioxide), and then heated at 180°C for 24 h to obtain the cerium dioxide (CeO2) nanoparticles. The properties of the three types of CeO2 are significantly different from that of the normal CeO2 (without gas saturation). The morphologies of the prepared CeO2 particles are different, even appear the hollow structure in CeO2−CO2 (synthesized in CO2 saturated condition). The more absorbing and meaningful thing is that the photocatalytic activity of CeO2−CO2 has been greatly improved. The concordance of the CO2 atmosphere (acid gas) and CeO2 (owning substantial content of basic sites) is the key point for the excellent photocatalytic performance.
Effects of the Atmosphere in a Hydrothermal Process on the Morphology and Photocatalytic Activity of Cerium Oxide
cctc.201800659.pdf
(1.08MB)
