Abstract
Perfluorooctanoic acid (PFOA) is an emerging persistent organic pollutant and receives increasing concerns due to its global occurrence and resistance to most conventional decomposition methods. In2O3 nanoporous nanospheres (NPNSs) with uniform size (∼100nm) were obtained by calcining nanoporous InOOH/In(OH)3 nanospheres and its photocatalytic activity for PFOA decomposition were evaluated. The InOOH/In(OH)3 precursor was self-assembled from ultrathin nanoplates (∼2nm) in an ethylenediamine-assisted alcohol-thermal system. The In2O3 NPNSs possessed a high value of specific surface area (39.0m2g−1) and a large number of nanopores (∼6nm). Compared with commercial In2O3 nanocrystals (NCs) and TiO2 (Degussa P25), In2O3 NPNSs showed a remarkable photocatalytic activity to decompose PFOA with the half-life of 7.1min. The first-order rate constant of PFOA by In2O3 NPNSs was nearly 9 and 54.6 times higher than that by In2O3 NCs and TiO2 respectively. The superior activity of In2O3 NPNSs for PFOA decomposition can be attributed to its nanoporous structure, large specific surface area, and direct reaction between the photogenerated hole and PFOA.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
