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ZIF-8 templated assembly of La3+-anchored ZnO distorted nano-hexagons as an efficient active photocatalyst for the detoxification of rhodamine B in water
Environmental Pollution ( IF 6.792 ) Pub Date : 2020-11-20 , DOI: 10.1016/j.envpol.2020.116018
K. Karuppasamy; Iqra Rabani; Dhanasekaran Vikraman; Chinna Bathula; J. Theerthagiri; Ranjith Bose; Chang-Joo Yim; A. Kathalingam; Young-Soo Seo; Hyun-Seok Kim

The use of lanthanum-anchored zinc oxide distorted hexagon ([email protected] DH) nanoclusters as an active material for the photodegradation of rhodamine B (Rh-B) dye via hydrogen bonding, electrostatic, and π-π interactions is examined herein. The active photocatalyst is derived from porous zeolite imidazole frameworks (ZIF-8) via a combined ultrasonication and calcination process. The distorted hexagon nanocluster morphology with controlled surface area is shown to provide excellent catalytic activity, chemical stability and demarcated pore volume. In addition, the low bandgap (3.57 eV) of [email protected] DH is shown to expand the degradation of Rh-B under irradiation of UV light as compared to the pristine ZIF-8-derived ZnO photocatalyst due to inhibited recombination of electrons and holes. The outstanding physicochemical stability and enhanced performance of [email protected] DH could be ascribed to the synergistic interaction among La3+ particles and the ZnO nanoclusters and provide a route for their utilization as a promising catalyst for the detoxification of Rh-B.

更新日期:2020-11-21
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