Catalytic degradation of ranitidine using novel magnetic Ti3C2-based MXene nanosheets modified with nanoscale zero-valent iron particles

Ionic liquid exfoliated Ti3C2Tx MXene nanosheets for photoacoustic imaging and synergistic photothermal/chemotherapy of cancer

“…S16d (ESI†) shows that with the increase of concentration, the absorption of IL-Ti 3 C 2 T x MXene also increased at 808 nm, while IL was almost absent in this region, indicating that IL-Ti 3 C 2 T x MXene and IL-Ti 3 C 2 T x MXene@DOX were successfully prepared and exhibited good absorbance in the NIR region. 39 Therefore, we chose 808 nm laser irradiation for the subsequent photothermal studies.…”

Rapid and long-lasting acceleration of zero-valent iron nanoparticles@Ti3C2-based MXene/peroxymonosulfate oxidation with bi-active centers toward ranitidine removal

“…In recent years, heterogeneous Fenton-like oxidization methods utilizing nanoscale zero-valent iron particles (nZVIPs) have attracted considerable attention due to their high surface reactivity, large specic surface area and low cost, and this approach is established by replacing dissolved ferrous ions in the Fenton reagent. [19][20][21] However, some disadvantages of nZVIPs still greatly limited their application in water pollution treatment. When their particle size decreases to the nanometer scale, agglomeration of nZVIPs in aqueous solution was inevitable due to magnetic and van der Waals forces, which would directly result in a signicant decrease in the specic surface area.…”

“…27,28 Reported literature indicates that the use of supporting materials with large specic surface areas is a highly effective method to prevent nZVIP aggregation and improve the chemical stability of metal nanoparticles in heterogeneous oxidation reactions. 21 Recently, two-dimensional transition metal carbides/carbonitrides (i.e., MXenes) have been applied in many elds since their emergence, providing low-dimensional connement quantum effects and a unique nanosheet structure with a large specic area, hydrophilicity and electrical conductivity, along with other benecial physical and chemical characteristics. 29,30 Among them, Ti 3 C 2 -based MXene has been the most widely used as the titanium element (valence states of +2, +3 and +4) in its molecular structure is metastable and could further provide reactive sites for heterogeneous oxidation reactions.…”

Functionalized hybrid magnetic catalytic systems on micro- and nanoscale utilized in organic synthesis and degradation of dyes

“…Specically, the Ti 3 C 2 -based MXene prevents the agglomeration of the nZVI particles (nZVIPs) and enhances the electron transition between the magnetic particles with a diameter of 10-40 nm. 245 Different analyses are used to explore the structural stability of catalysts. Fig.…”

“…The surface inactivation of the nZVI particles (nZVIPs) was caused by the dense iron-based oxide layer covering the active sites, resulting in poor reusability. 245 A slight loss in activity is mainly attributed initially to the leaching of metal ions from the catalyst during the reaction, recovery, and washing steps, resulting in a loss of active sites. Secondly, some residual by-products on the catalysts may cause the active sites to be obstructed, reducing the degradation yield of organic pollutants.…”