Tungsten Catalysts for Visible Light Driven Ofloxacin Photocatalytic Degradation and Hydrogen Production

Catalysts

Dhanalakshmi Vadivel¹  Daniele Dondi¹  Michela Sturini²  Andrea Speltini² 

[1] Department of Chemistry, Section of General Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy;Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy;

关键词: ofloxacin;    TBADT;    bismuth tungstate;    hydrogen;    kinetics;    HPLC;   

DOI  :  10.3390/catal12030310

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown