"Theoretical insights into nitrogen oxide activation on halogen defect-" by Kang Xu, Liang Wang et al.
Abstract Surface vacancies, serving as the activation centers for surface-adsorbed species, have been widely applied in catalysts to improve their activity and selectivity. In the case of ternary compound semiconductors, there is some controversy about exposed atoms and surface defects. Two-dimensional layered BiOCl is an important photocatalyst, which has had numerous studies focused on its oxygen vacancy (O ) and bismuth vacancy (Bi ). It has been realized that its (001) surface can consist of exposed halogen atoms rather than oxygen atoms, which thus needs a new explanation for its surface...
Source: uow.edu.au