Oxygen vacancy engineered molecular imprinted TiO2 for preferential florfenicol remediation by electro-reductive approach: Enhanced dehalogenation performance and elimination of antibiotic resistance genes

Upcycling Textile White Mud to Fabricate MIL-125-Derived Amorphous TiO2@C: Effective Electrocatalyst for Cathodic Reduction of Antibiotics

“…Then 1.3 mL Ti(OBu)4 was added dropwise with vigorous stirring for 2 h, and the mixture was then maintained at 150 °C for 15 h. After cooling to an ambient temperature, Considering the above, we propose a hydrothermal-based roadmap for the separation of 1,4-dicarboxybenzene from textile white mud and the subsequent fabrication of amorphous MIL-125(Ti)-W, along with its derived TiO 2 @C-W. Owing to the abundant heteroatoms brought by the co-existing components for BDC separated from textile white mud, TiO 2 @C-W derived from MIL-125(Ti)-W is expected to show enriched vacancies and an enhanced surface area. Following this hypothesis, TiO 2 @C-W is predicted to exhibit satisfactory cathodic reduction activity, according to our previous study [26]. In the later sections, the physicochemical characterization of the fabricated MIL-125(Ti)-W and TiO 2 @C-W, including morphology, crystalline structure, oxygen vacancy, and surface area analysis, is conducted.…”

“…The performance of TiO 2 @C-W was compared with that of several reference and benchmark electrocatalysts including TiO 2 @C derived from MIL-125(Ti) fabricated by reagents, pristine TiO 2 , oxygen vacancy-engineered TiO 2 as reported in our previous study (TiO 2−x ) [26], and commercial Pd(3 wt.%)/C. Figure 5A indicates that TiO 2 @C-W showed similar catalytic activity for FLO reduction as Pd(3 wt.%)/C did, which was substantially higher than that of TiO 2−x , TiO 2 , and TiO 2 @C. Figure 5B further quantifies the reaction rate for FLO reduction, which followed an order of Pd(3 wt.%)/C (0.018 min −1 )~TiO 2 @C-W (0.017 min −1 ) > TiO 2−x (0.012 min −1 ) > TiO 2 (0.009 min −1 ) > TiO 2 @C (0.005 min −1 ).…”

“…have shown their catalytic potentials for this application up to now [22][23][24][25]. Recently, we reported that titanium oxide as a semiconducting material could be engineered with vacancies to effectively catalyze the cathodic reductive degradation of florfenicol (a typical wide-spectrum antibiotic agent) [26]. This strategy overcomes the intrinsic poor conductivity and rare active sites of transition metal oxides, and is expected to convert these inert materials into high-performance electrocatalysts.…”

Tailoring TiO2 Interfacial by Photoinduced Calcium Deposition for Electrochemical Sensitive Detection of Bisphenol A

“…However, its wide-band-gap energy (3.2 eV) limits its use to photocatalysis, as pure TiO 2 exhibits low conductivity and limited reactivity for electrochemical BPA detection. Modified TiO 2 materials, such as facet-tailored, noble metal surface-loaded, and oxygen vacancy-engineered composites, demonstrate improved electrochemical performance. , These modifications offer opportunities in catalysis and device design, controlling optical and electrical properties. − Therefore, to address the low conductivity and lack of active sites of TiO 2 , development and exploration of highly active and selective TiO 2 electrode are required. , …”