![]() While Cr(VI), a hazardous industrial waste, is an acute toxic, carcinogenic, and proven mutagenic pollutant, Cr(III) is thought to be an essential element for living things. ![]() ![]() This study provides a novel low-carbon and environmentally friendly way to prepare high efficiency cathode catalyst materials and provides a new idea of simultaneous purification for organic and metallic pollutants from complex wastewater. After applying this novel cathode catalyst, the electric generation capacity of MFC system increased by 5.08 times, and its simultaneous degradation efficiency of methyl blue (MB) and Cr (VI) increased by 3.35 times (compared with graphite cathode MFC). In this case, molybdenite had many changes in morphology (wave-shaped bending, fragmentation and decrescent diameter) during oxidation modification process, and oxidation-modified molybdenite could provide much more active sites for the cathode. Herein, a new-type efficient cathode catalyst was invented through modifying natural molybdenite via one-step oxidation method. However, approaches for the modification of MFCs' cathode with appropriate catalyst could effectively overcome this limitation. But its wastewater treatment efficiency is restricted by its lower generation performance. Graphical abstractPhotocatalytic reduction of Cr(VI) to Cr(III) on TiO2-RGO nanocompositeĪs a novel technique with a wide range of applications, microbial fuel cell (MFC) could simultaneously remove organic contaminants and heavy metals in complex wastewater, despite striking differences in physicochemical properties of these contaminant. The highest removal rate was observed in the acidic medium. The Cr(VI) photoreduction also exhibited a pH dependence. ![]() The performance degraded with increasing RGO content in the composite, which can be attributed to the higher electron-hole recombination on the RGO surface. At the optimum composition of TiO2-xRGO, a maximum removal rate of 96% was recorded, which was higher than that of the pristine TiO2, which showed no appreciable catalytic activity under the same condition. The composites displayed excellent photoreduction of Cr(VI) in the visible light, which was found to be a function of the weight percentage of RGO in the composite. The formation of the composite catalysts was accompanied by the appearance of a large fluorescence quenching, which indicates an efficient separation of photogenerated electrons and holes. Nanoscale TiO2 particles in the size range of 4–9 nm were formed on the reduced graphene sheets. Here, we report a one-step solvothermal synthesis of TiO2-reduced graphene oxide (TiO2-xRGO) composite catalysts using a mild reducing agent, dimethylformamide (DMF). Photoreduction is one of the remediation methods of the hexavalent chromium Cr(VI), which necessitates design of an efficient catalyst for visible light performance. Im.save(newfilename, "PDF", resolution = 100.Hexavalent chromium, Cr(VI), is a mutagenic and carcinogenic heavy metal environmental pollutant. It converts the tif files to pdf, but if the tiff files has more than 1 page it only converts the first one. I was able to find something and it kind of works. ![]() from PIL import Imageĭirectory = r'/Users/reynierDesktop/Drive/' #Convert .rgo files to pdf code#I was able to convert a single one but when implementing a code I found for multiples is giving me an error "No such file or directory:" This is the code I'm using, thanks in advance. I'm trying to use python as they are more than 3000. tif files that I'm trying to convert to individual pdf's. ![]()
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