Abstract
Some tungsten catalysts of interest that are synthesized are bismuth tungstate (BT) and Tetrabutylammonium decatungstate (TBADT), using two consolidated procedures. BT is used as a photo-catalyst for the simulated solar light degradation of ofloxacin (OFL) antibiotic under relevant real conditions (µg L−1, fresh water) with the limit of 0.05 g L−1 of catalyst. A quantitative drug decomposition occurred following a bi-exponential first-order law, with an efficiency comparable with the most used P25 TiO2 catalyst. The photocatalytic profiles of OFL at µg L−1 and mg L−1 were monitored by high-pressure liquid chromatography (HPLC) coupled with fluorescence (FD) and ultraviolet (UV) detectors. Additionally, the main photoproducts were identified by high-pressure liquid chromatography coupled to electrospray ionization in tandem with mass spectrometry (HPLC-ESI-MS/MS). The catalyst Tetrabutylammonium decatungstate (TBADT) was used as a catalyst to produce hydrogen from glucose and 2-propanol in aqueous solution, providing hydrogen gas evolution up to 10 µmol g−1 h−1.
Highlights
Pollution is an unavoidable topic, especially as impurities removal from industrial and household products is necessary
The photocatalytic profiles of OFL at μg L−1 and mg L−1 were monitored by high-pressure liquid chromatography (HPLC) coupled with fluorescence (FD) and ultraviolet (UV) detectors
bismuth tungstate (BT) was used as a catalyst for simulated solar light decomposition of ofloxacin (OFL) at 16 μg L−1 concentration with the limit of 0.05 g L−1 of BT catalyst
Summary
Pollution is an unavoidable topic, especially as impurities removal from industrial and household products is necessary. The whole world is thinking about developing alternative energy sources before 2050 to decrease carbon dioxide emissions. In this sense, to create a green Earth, a strategic approach in the production of H2 gas is highly demanded by green methods. The degradation of pollutants and their analysis brings us a step closer to realizing a green Earth. Today, consuming antibiotics and other basic medicines is unavoidable to stay healthy. These medicines create more pollution, especially in water [1]
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