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Given the promising prospect of peroxidase‐like nanozymes in colorimetric assay, it is interesting and significant to eliminate their oxidase‐like activities and color interference for nanozyme‐based colorimetric assay. Here, the enzyme‐mimicking activity of GeO2 nanomaterials is discovered. GeO2 nanozymes exclusively possess peroxidase‐like activity without oxidase‐like characteristics, freeing the...
In article number 2001933, Lei Han and Xin Liang synthesize white nanozymes (GeO2 nanozymes), eliminating the color disturbance of nanozymes themselves for colorimetric assays with peroxidase substrates (TMB). The single peroxidase‐like activity frees the assay system from the interference of O2 in real samples. The ultra‐high thiocholine‐sensitivity facilitates ultra‐trace organophosphate pesticide...
It has been widely reported that “naked” gold nanoparticles (Au NPs) without protectors have glucose oxidase (GOx)‐like activity, and the use of protectors can inhibit the GOx‐like activity. Here, “non‐naked” Au NPs with GOx‐like activity are synthesized by using protein as protector. Although “naked” Au NPs have peroxidase‐like activity and GOx‐like activity, the optimal pH ranges of the both activities...
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