Figure 3From: Unique and facile solvothermal synthesis of mesoporous WO3 using a solid precursor and a surfactant template as a photoanode for visible-light-driven water oxidationFTIR spectra of WO 3 -DDA samples. (a) The as-made sample and samples after being calcined at (b) 400°C and (c) 500°C.Back to article page