Progress on TiO₂-based Nanomaterials and Its Utilization in the Clean En-ergy Technology

TiO2 nanomaterials are the research hotspots among recent nanotechnologies, and those are demon- strated having the crucial application prospects in the solar light photocatalytic splitting water into hydrogen, the photocatalytic reduction of CO2, as well as dye-sensitized solar cells. This article mainly reviewed recent research trends of TiO2-based nanomaterials, the existing problems, and the advances in the clean energy utilization. Espe- cially, the hot research issues such as non-metallic element doping, high energy facets exposed titania, and compact film for dye-sensitized solar cells, were commented and prospected.