A molecular-scale hetero-assembly approach was used to construct visible light-active and stable photoelectrodes consisting of narrow- and wide-bandgap semiconductor units, i.e., MoS₂ and Ti_0.87O₂ nanosheets (NSs). The complementary coupling between corrodible MoS₂ NSs and corrosion-protective visible light-transparent Ti_0.87O₂ NSs resulted in the enhanced photoelectrode durability due to the chemical stability and hole tunneling ability inherent to ultrathin insulating oxide coating layers.

We work on the rational synthesis of a large variety of functional nanomaterials including 1D nanotubes and 2D nanosheets. Furthermore, we design various nanocomposites and heterostructures by assembling and integrating these nanomaterials as building blocks. By taking advantage of hetero-interfacial synergistic effects and concerted interactions such as acid-base reaction, redox cycle, charge separation, anisotropic electron/ion transport, we are exploring their application prospects in nano energy and nanoelectronics such as high-performance active materials, non-precious catalysts, solid electrolytes/membranes, functional coatings, nano transistors, etc.