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

Large scale and controllable preparation of W₂C nanorods or WC nanodots with peroxidase-like catalytic activity

Ren Xiao-Na, Xia Min^†, Yan Qing-Zhi, Ge Chang-Chun^‡

(color online) Peroxidase-like activities of the as-obtained W C nanorods and WC nanodots. Panels (a) and (b) show UV-vis absorption spectra and photos for OPD and TMB, respectively. The left insert in panel (a) is the WC catalyzed oxidation of OPD and the right one the W C catalyzed oxidation of OPD. The insert photo in panel (b) is taken as soon as the reaction begins and the buffer is pH = 4. Panel (c) displays the variations of relative catalytic activity of W C nanorods and WC nanodts with TMB. Panel (d) exhibits the variations of relative catalytic activity of W C nanorods and WC nanodts with the quantity of H O .