title: Fine structural photoluminescence spectra of silica-supported zirconium oxide and its photoactivity in direct methane conversion.
abstract: Highly dispersed zirconium oxide species on silica exhibit fine structure in phosphorescence emission spectra showing the vibration energy of the photoactive Zr-O-Si linkage to be 955 cm-1, and the species promotes the photoinduced non-oxidative methane coupling at room temperature.