Photodynamics of NaTaO3 Catalysts for Efficient Water Splitting

摘要: Electrons photoexcited in catalysts based on NaTaO3 were observed by time-resolved infrared (IR) absorption spectroscopy. The electrons excited 266-nm pump pulse exhibited a monotonic of mid-IR light. recombination kinetics the with holes was monitored vacuum as function time delay ranging from 100 ns to 1 s. When Na content and La dopant optimized achieve high activity steady-state reaction water splitting, recombinative decay hindered increase amount electrons. transferred NiO ultrafine particles, loaded cocatalyst, within μs following excitation. Exposing vapor affected electron efficient transfer via cocatalyst evidenced.