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

New Journal of Chemistry, ISSN: 1369-9261, Vol: 43, Issue: 19, Page: 7409-7418
2019
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Article Description

"Hierarchically porous Ni,La-SrTiO" (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 atmosphere, as the hard template. The obtained samples were characterized using XRD, SEM, TEM, FT-IR, TG, N 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 g, while the pore volume is larger than 0.2 cm g. The Hp-NLSTOs present superior visible-light performance in the photo-degradation of malachite green (MG) compared to that of commercial SrTiO and nonporous Ni,La-SrTiO.

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