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

TiO2 nanomaterials are the research hotspots among recent nanotechnologies, and those are demonstrated 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. Especially, 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.