Abstract
To clarify the nature of different photocatalytic activities between niobate and tantalate, a comparative study of the water splitting into H2 over strontium niobate and tantalate was performed. These isostructural photocatalysts were prepared by a facile and simple hydrothermal reaction and characterized by powder X-ray diffraction (XRD), N2-sorption, UV-Vis diffuse reflectance spectra (UV-Vis DRS), and transmission electron microscopy (TEM). The effects of crystal structure, Brunauer-Emmett-Teller (BET) surface area, photoabsorption performance, morphology, and electronic structure are discussed.
Highlights
To clarify the nature of different photocatalytic activities between niobate and tantalate, a comparative study of the water splitting into H2 over strontium niobate and tantalate was performed
We investigate the activity of strontium niobate and tantalate photocatalysts prepared by our recently-developed methods [7–9]
Discussions of the photocatalytic activity are based on differences in crystal structure, BET surface area, photoabsorption performance, electronic structure, and morphology of the catalytic materials
Summary
To clarify the nature of different photocatalytic activities between niobate and tantalate, a comparative study of the water splitting into H2 over strontium niobate and tantalate was performed. Since the layered K4Nb6O17 was reported [3], numerous studies have been carried out on niobate and tantalate photocatalysts due to their unique structure and high performance in photocatalytic reactions [4,5]. Photocatalytic water splitting over niobate and tantalate catalysts has been widely investigated, previous studies have mainly focused on development of synthetic methods for preparation of new catalysts.
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