The present invention relates to the technical field of
pathogen and
disease marker detection, and specifically to an ultra-small high-entropy
alloy for lateral flow immunochromatography, and its preparation method and application. The preparation method of the high-entropy
alloy comprises the following steps: preparing a precursor solution; preparing the high-entropy
alloy by a low-temperature reduction-
diffusion strategy. The high-entropy alloy prepared by the method of the present invention has excellent catalytic performance and ultra-high
peroxidase simulation activity. When applied to lateral flow immunochromatography, it can quickly and accurately detect
Staphylococcus aureus, and has the characteristics of high sensitivity and strong specificity. At the same time, the present invention successfully extends the application of the high-entropy alloy to the detection of
kidney injury marker
cystatin C by modifying the recognition element. The high-entropy alloy for lateral flow immunochromatography provided by the present invention has huge market promotion prospects in the field of
pathogen and
disease marker detection.