摘要：A series CeO2（ZrO2）/TiO2 catalysts were modified with Er using a sol-gel *** catalytic activity of the obtained catalysts in the selective catalytic reduction（SCR） of NO with NH3 was investigated to determine the appropriate Er *** catalysts were characterized using X-ray diffraction,N2 adsorption,NH3 temperature-programmed desorption,H2 temperature-programmed reduction,photoluminescence spectroscopy,electron paramagnetic resonance spectroscopy,and X-ray photoelectron *** results showed that the optimum Er/Ce molar ratio was 0.10;this catalyst had excellent resistance to catalyst poisoning caused by vapor and sulfur and gave more than 90% NO conversion at 220–395 ℃ and a gas hourly space velocity of 71 400 h^-*** incorporation increased the Ti^3＋ concentrations,oxygen storage capacities,and oxygen vacancy concentrations of the catalysts,resulting in excellent catalytic *** incorporation also decreased the acid strength and inhibited growth of TiO2 and CeO2 crystal particles,which increased the catalytic *** results show that high oxygen vacancy concentrations and oxygen storage capacities,large amounts of Ti^3＋,and low acid strengths give excellent SCR activity.

摘要：疫情之下,为了响应教育部门和学校“停课不停学”的号召,本教研室开展了医学留学生研究生分子遗传学的线上教学。为了突出学生在教学环节的主导地位,促进学生主动学习的能力,顺应信息化时代知识碎片化和学习时间碎片化的现状,该课程采用了基于翻转课堂的碎片化学习模式,并融入课程思政和医学人文教育。本文旨在通过该课程的教学探索、积累经验,为今后能拓展到更多课程,培养高质量的生物医学人才。