Covellite nanoparticles with high photocatalytic activity bioproduced by using H2S generated from a sulfidogenic bioreactor
Covellite nanoparticles with high photocatalytic activity bioproduced by using H2S generated from a sulfidogenic bioreactor
Authors
Nancucheo, Ivan
Segura, Aileen
Hernandez, Pedro
Hernandez Montelongo, Jacobo
Pesenti, Hector
Arranz, Antonio
Benito, Noelia
Romero Saez, Manuel
Contreras, Braulio
Diaz, Victor
Recio Sanchez, Gonzalo
Segura, Aileen
Hernandez, Pedro
Hernandez Montelongo, Jacobo
Pesenti, Hector
Arranz, Antonio
Benito, Noelia
Romero Saez, Manuel
Contreras, Braulio
Diaz, Victor
Recio Sanchez, Gonzalo
Profesor GuĆa
Authors
Date
Datos de publicaciĆ³n:
10.1016/j.jece.2022.107409
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,Vol.10,2022
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,Vol.10,2022
Tipo de recurso
Article
Keywords
Materia geogrƔfica
Collections
Abstract
The 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.