Photoactive MBenes: the next generation of MXene-like 2D structures

MBenes family is a novel member in the flatland and a recent derivative of ternary MAB phases. However, MBenes differ from MXenes in many ways. Compared to MXenes, MBenes’ structure is more complex due to multiple lattice arrangements. At the same time, boron opens the door to the rich structural chemistry of MBene, excellent reactivity, and energy harvesting abilities, to mention a few. In this talk, I will present a new synthetic approach to Mo₂B₂ MBene from its parental MoAlB phase, supported by theoretical calculations. In addition, I will demonstrate the tremendous photocatalytic potential of MBene compared to MXene. While research interest is rapidly accelerating, practical applications require better control over MBene's surface terminations and oxidation. MBene’s vast compositional space and versatility provide almost limitless potential for designing structural variants with tailored optical and electronic properties. However, further research is needed to fully understand these novel materials and unlock their exotic light-driven phenomena. In summary, I expect MBenes to boost the fundamental research toward exploring their catalytic features in the next decade and develpment of MBene-based technologies that can manipulate light like never before.