Co3O4-Ce O2 nanoparticles with increasing Co/Ce atomic ratio were prepared by wet impregnation and characterized by means of X-ray photoelectron. Co3O4 is preva
THE hinterland city of Qufu insouthwestern Shandong Prov-ince has made its name as anhonored historical and culturalresort in China, not least for being thebirthplace of Confucius. Confucianism, the