Cubic platinum-tungsten alloy nanocrystals in-situ grown on molybdenum disulfide nanosheets for high specific and ultra sensitive detection of hydrogen peroxide

This work reports a novel nanocomposite material, PtW nanocrystals modified MoS₂ nanosheets (PtW/MoS2) for the first time. Having been tuned into electrochemical sensor, it is found that this kind of nanocomposite material shows great anti-interference ability toward uric acid (UA) and ascorbic acid (AA). Furthermore, the incorporation of two different nanomaterials in conjunction with each other to form novel composites improves the selective interaction of hydrogen peroxide (H₂O₂) with sensing material surface, achieving efficient transport of reactant species, and further increases the sensitivity and selectivity of electrochemical sensor.