Scanning tunnelling microscopy study of ammonia adsorption on TiO_2(110)

摘要

We have used scanning tunnelling microscopy to study the adsorption of ammonia on TiO_2(l10). Our results confirm that NH_3 adsorbs on 5-fold coordinated Ti sites, in line with previous studies. At higher coverages, our images show that the NH_3 has a preferred periodicity in the [001] direction of twice the primitive unit cell distance.