Large scale and controllable preparation of W ₂ C nanorods or WC nanodots with peroxidase-like catalytic activity

Abstract

W 2 C nanorods or WC nanodots are prepared via an easy, shape-controllable and large-scale preparation technique. Results reveal that each of the W 2 C nanorods and WC nanodots has a peroxidase-like activity. Besides, the peroxidase-like activity of W 2 C is the first time to be demonstrated. The catalytic efficiency of W 2 C nanorods is much higher than that of WC nanodots and chemical condition range of W 2 C can be wider than that of WC, which indicates that W 2 C is likely to be used as artificial mimetic peroxidase or in-situ amplified colorimetric immunoassay.

State-of-the-Art Review on Amorphous Carbon Nanotubes: Synthesis, Structure, and Application

“…Given the capillarity and the unique structure of aCNTs, the latter are used as templates to prepare W nanowires, W nanodots (Figure 15), and tungsten carbide nanowires or nanodots (Figure 16). Furthermore, the special reduction mechanism inside the aCNTs promotes their ability to function as supports or templates (Figure 17) [31,114,128]. To utilize the hollow core of aCNTs, the Marangoni flow was designed and several transition bimetal oxides were deposited onto aCNTs to achieve outstanding electrochemical properties [36,129].…”