Organic‐Base‐Driven Intercalation and Delamination for the Production of Functionalized Titanium Carbide Nanosheets with Superior Photothermal Therapeutic Performance

Abstract

The delamination of titanium carbide sheets, an intriguing class of two‐dimensional materials, has been critically dependent on the extraction of interlayer Al in acidic media, such as concentrated hydrofluoric acid (HF) or a mixture of hydrochloric acid (HCl) and a fluoride salt. Herein, we report an organic‐base‐driven intercalation and delamination of titanium carbide that takes advantage of the amphoteric nature of interlayer Al. The resulting aluminum‐oxoanion‐functionalized titanium carbide sheets manifested unusually strong optical absorption in the near‐infrared (NIR) region with a mass extinction coefficient as high as 29.1 L g−1 cm−1 at 808 nm. Thus, the performance of this material is comparable or even superior to that of state‐of‐the‐art photoabsorption materials, including gold‐based nanostructures, carbon‐based materials, and transition‐metal dichalcogenides. Preliminary studies show that the titanium carbide sheets serve as efficient photothermal agents against tumor cells.

Antimonene Quantum Dots: Synthesis and Application as Near‐Infrared Photothermal Agents for Effective Cancer Therapy

“…One limitation is that few PTAs possess the requisite absorption spectra for NIR photothermal transduction. [2] The emerging 2D NMs with exciting physical and chemical properties can offer new solutions to this absorption constraint. [3] Examples include graphene derivatives ( e.g.…”

Hierarchical Cobalt Borate/MXenes Hybrid with Extraordinary Electrocatalytic Performance in Oxygen Evolution Reaction

“…Ti 3 C 2 T x MXenes: HF solution was used to synthesize Ti 3 C 2 T x by etching Ti 3 AlC 2 according to a previously reported method . Specifically, Ti 3 AlC 2 (1 g; Forsman Scientific (Beijing) Co. Ltd) was slowly added into 40 % HF solution (10 mL; Aladdin (Shanghai) Co. Ltd).…”

“…Synthesis methods Ti 3 C 2 T x MXenes:H Fs olution was used to synthesize Ti 3 C 2 T x by etching Ti 3 AlC 2 according to ap reviously reported method. [16] Specifically,T i 3 AlC 2 (1 g; Forsman Scientific (Beijing) Co. Ltd) was slowly added into 40 %H Fs olution (10 mL;A laddin (Shanghai)C o. Ltd). The reaction mixture was held at room temperature for 18 h. After etching for 18 h, the mixture was washed with distilled water several times and centrifuged, until the pH value of the supernatant was approximately 6.…”

Ti3C2 MXene Paper for the Effective Adsorption and Controllable Release of Aroma Molecules

“…In addition, the hydrophilic surface of MXene manifests the facile processing in aqueous environment without additional surfactant and surface modification, which facilitates the preparation of films and surface coatings. So far, MXenes have shown a wide variety of applications including the sensing, energy storage, catalysis, and photothermal conversion …”