Covellite nanoparticles with high photocatalytic activity bioproduced by using H2S generated from a sulfidogenic bioreactor

dc.creatorNancucheo, Ivan
dc.creatorSegura, Aileen
dc.creatorHernandez, Pedro
dc.creatorHernandez Montelongo, Jacobo
dc.creatorPesenti, Hector
dc.creatorArranz, Antonio
dc.creatorBenito, Noelia
dc.creatorRomero Saez, Manuel
dc.creatorContreras, Braulio
dc.creatorDiaz, Victor
dc.creatorRecio Sanchez, Gonzalo
dc.date2022
dc.date2022-06-15T20:44:28Z
dc.date2022-06-15T20:44:28Z
dc.date.accessioned2022-10-18T14:52:21Z
dc.date.available2022-10-18T14:52:21Z
dc.identifierJOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,Vol.10,2022
dc.identifierhttps://repositoriodigital.uct.cl/handle/10925/4601
dc.identifier10.1016/j.jece.2022.107409
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4444070
dc.descriptionThe application of sulfate reducing bacteria (SRB) has emerged as an efficient biotechnology to reduce sulfate to sulfide and to mediate the precipitation of transition metals as sulfides. In the present work, hydrogen sulfide biogenerated by the SRB was delivered into a copper aqueous solution vessel to produce copper sulfide nano particles. The main physico-chemical properties were studied by TEM, XRD, UV-vis spectroscopy, fluorescence spectroscopy, UPS and XPS. In addition, the photocatalytic activities for organic dyes removal were investigated, showing a high degradation rate of MB and RD in aqueous solution. By changing the copper concentration during the synthesis process, main physico-chemical properties of copper sulfides nanoparticles can be controlled. For the lowest concentration, pure covellite flake-like nanostructures were produced. Higher concentrations produced spherical-like shapes with the presence of SO42-& nbsp;on the surface. Experimental results showed a promising way to obtain valorous copper sulfides nanoparticles by using dissimilatory reduction of sulfate mediated by SRB.
dc.languageen
dc.publisherELSEVIER SCI LTD
dc.sourceJOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
dc.subjectCuS nanoparticles
dc.subjectPhotocatalytic activity
dc.subjectSulfate reduction bacteria
dc.subjectBioreactor
dc.titleCovellite nanoparticles with high photocatalytic activity bioproduced by using H2S generated from a sulfidogenic bioreactor
dc.typeArticle


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