Comparative study of Janus B<sub>2</sub>XY (X, Y = S, Se, Te) and F-BNBN-H monolayers for water splitting: revealing the positive and negative roles of the intrinsic dipole
Xiaojun Yan, Wenyuan Li, Guo-Ting Nan, Xing Zou, Lili Liu, Anrong Wang, Shifa Wang, Yong Wei, Chunming Yang, Lei Hu
Abstract
XY monolayers have limited or vanishing redox ability, because their CBM is located at the surface with a higher vacuum level and their VBM is distributed on the opposite surface with a lower vacuum level. This work emphasizes the negative role of vacuum level differences of photocatalysts caused by the intrinsic dipole in water splitting.
Topics & Concepts
MonolayerDipoleJanusVacuum levelChemistryWater splittingValence (chemistry)HydrogenCondensed matter physicsChemical physicsMaterials scienceNanotechnologyPhotocatalysisPhysicsCatalysisQuantum mechanicsOrganic chemistryBiochemistry2D Materials and ApplicationsAdvanced Photocatalysis TechniquesMXene and MAX Phase Materials