The performance of , CQD/Sb۲Wo۶ catalase-like enzyme in inhibitinghydrogen peroxide

Nanoparticles’ catalytic activity and intrinsic ability in generating or scavenging reactiveoxygen species in general can be used to show the catalytic activity of natural enzymes. Manynanoparticles with enzyme-like activities have been found, potentially capable of being appliedfor commercial applications, such as in biosensors, pharmaceutical processes, and the foodindustry [۱] . Compared with natural catalase or artificial CAT enzymes, CAT-like nanozymeshave unique properties of low cost, size-dependent properties, high catalytic activity, stability, andeasy surface modification[۲] . One of the key oxidative threats to oxygen-tolerant organisms ishydrogen peroxide (H۲O۲) [۳] . Virtually all organisms employ catalases and peroxidases to keepthe steady-state level of endogenous H۲O۲ below the threshold of toxicity. Herein, , CQD/Sb۲Wo۶were used as a catalase, catalyzing the decomposition of hydrogen peroxide to oxygen. ,CQD/Sb۲Wo۶ had better stability than natural catalase when they were exposed to solutions withdifferent pH values and temperatures. The activity of the , CQD/Sb۲Wo۶ was measured by UVvisiblespectroscopy. The prepared Catalase were identified using FE-SEM, DRS, EDS, FT-IR,and PL.

کلیدواژه ها:

Intrinsic ، Hydrogen Peroxide ، Enzyme-like ، Catalase