Facile fabrication of sponge-like hierarchically porous Ni,La–SrTiO 3 templated by in situ generated carbon deposits and the enhanced visible-light photocatalytic activity

“Hierarchically porous Ni,La–SrTiO 3 ” (Hp-NLSTO) photocatalysts were synthesized using carbon deposits, which were in situ generated via the pyrolysis of an organic compound (OC) during the crystallization process at high temperatures in N 2 atmosphere, as the hard template. The obtained samples we...

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Bibliographic Details
Published in:New journal of chemistry 2019-05, Vol.43 (19), p.7409-7418
Main Authors: Jia, Aizhong, Zhang, Xiao, Li, Fang, Wang, Yanji
Format: Article
Language:English
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Summary:“Hierarchically porous Ni,La–SrTiO 3 ” (Hp-NLSTO) photocatalysts were synthesized using carbon deposits, which were in situ generated via the pyrolysis of an organic compound (OC) during the crystallization process at high temperatures in N 2 atmosphere, as the hard template. The obtained samples were characterized using XRD, SEM, TEM, FT-IR, TG, N 2 adsorption–desorption and UV-vis diffusive reflectance. The results indicate that hierarchical pores, including super-macropores (>400 nm), macropores, mesopores and micropores, were successfully fabricated in the synthesized samples. The surface area of Hp-NLSTOs is higher than 110 m 2 g −1 , while the pore volume is larger than 0.2 cm 3 g −1 . The Hp-NLSTOs present superior visible-light performance in the photo-degradation of malachite green (MG) compared to that of commercial SrTiO 3 and nonporous Ni,La–SrTiO 3 .
ISSN:1144-0546
1369-9261
DOI:10.1039/C9NJ00613C