Synthesis of a novel bismuth molybdite/iron oxide thin film for oxytetracycline degradation in a photoelectrocatalytic system.

In this study, heterostructures based on Bismuth molybdite/iron oxide (BiMoO/FeO) thin films were fabricated by a dip-coating technique using precursor solutions. The heterostructures were deposited on fluorine-doped tin oxide glass substrates. From a detailed characterization using X-ray diffraction and X-ray photoelectron spectroscopy, the formation of the orthorhombic phase for BiMoO and the co-existence of hematite and maghemite in FeO was demonstrated.

Evidence for autotrophic growth of purple sulfur bacteria using pyrite as electron and sulfur source.

Unlabelled: Purple sulfur bacteria (PSB) are capable of anoxygenic photosynthesis via oxidizing reduced sulfur compounds and are considered key drivers of the sulfur cycle in a range of anoxic environments. In this study, we show that (a PSB species) is capable of autotrophic growth using pyrite as the electron and sulfur source. Comparative growth profile, substrate characterization, and transcriptomic sequencing data provided valuable insight into the molecular mechanisms underlying the bacterial utilization of pyrite and autotrophic growth.

Complete abatement of the antibiotic ciprofloxacin from water using a visible-light-active nanostructured photoanode.

The wide use of the fluoroquinolone antibiotic ciprofloxacin (CIP), combined with its limited removal in wastewater treatment plants, results in a dangerous accumulation in natural water. Here, the complete degradation of CIP by photoelectrocatalysis (PEC), using an FTO/ZnO/TiO/AgSe photoanode that is responsive to blue light, has been investigated. A slow antibiotic concentration decay was found in 0.