2026-04-13T02:24:29Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1513852025-11-19T20:34:11Zcom_2072_1057col_2072_478796col_2072_478917

Efficient magnetic hybrid ZnO-based photocatalysts for visible-light-driven removal of toxic cyanobacteria blooms and cyanotoxins Serrà i Ramos, Albert Pip, Petai Gómez, Elvira Philippe, Laetitia Fotocatàlisi Òxid de zinc Microalgues Photocatalysis Zinc oxide Microalgae A hybrid magnetic-ZnO-based photocatalyst platform is designed for the efficient and simultaneous sunlight-driven photoremoval of cyanobacteria and mineralization of cyanotoxins (anatoxin-A). The photocatalyst killing ability was evaluated against two types of microalgae with different morpholo-gy and toxicity, Spirulina platensis paracas and Anabaena flos-aquae. The hybrid photocatalyst Ni@ZnO@ZnS-Spirulina was synthetized by means of a multistep process using Spirulina as bio-template. The effects of reactor geometry, magnetic actuation, and concordant architecture on pho-tokilling ability were tested. Moreover, the prepared photocatalysts were demonstrated to be effective for the anatoxin-A degradation under artificial sunlight. In the interest of reducing waste content and optimizing resources, photocatalyst recycling after their useful lifetime has ended is proposed through the fabrication of microalgal biofuel-pellets. This inexpensive circular process involves mul-ti-functional algae-based photocatalysts applied to the simultaneous destruction of algae blooms and cyanotoxins and then recycled to close the circle through cultivating biotemplates. 2020-02-27T17:19:07Z 2020-02-27T17:19:07Z 2020-02-09 2020-02-27T17:19:07Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1016/j.apcatb.2020.118745 Applied Catalysis B-Environmental, 2020, vol. 268, p. 118745 https://doi.org/10.1016/j.apcatb.2020.118745 cc-by-nc-nd (c) Serrà et al., 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess Elsevier B.V. Articles publicats en revistes (Ciència dels Materials i Química Física)