Noble metal platinum is highly prestigious for its catalytic and electrocatalytic properties. Their compounds with chalcogens (S, Se, Te) are layered which may give an edge in terms of structure, in addition to composition. The bonding of platinum dichalcogenides (PtX₂) deviates from their extensively studied group 6 counterpart, MoS₂. Pt-X is covalent and a strong interlayer interaction exists between the chalcogenides, ensuing a dramatic layer and chalcogen dependence in their electronic properties. Recognising that layered platinum dichalcogenides has yet to be developed for electrochemical sensors, we herein delve into these compounds as we synthesise PtS₂, PtSe₂ and PtTe₂ by heating stoichiometric amounts of their respective elements. Extensive characterisation has been carried out to elucidate structural and chemical properties of the materials. Their electrochemical capabilities in enhancing signal transduction upon detection of H₂O₂ are compared where PtTe₂ performs outstandingly. Furthermore, electrochemical pre-treatment is employed to improve sensitivity. PtTe₂-based electrochemical sensor is optimised and developed to detect H₂O₂ with satisfactory analytical prerequisites of sensitivity and selectivity.

贵金属铂因其催化和电催化性能而享有盛誉。它们的化合物与硫属元素（S，Se，Te）分层，除组成外，在结构上可能具有优势。铂二硫化二氢（PtX ₂）的键合与其广泛研究的第6组对应物MoS ₂背离。Pt-X是共价的，硫族化物之间存在很强的层间相互作用，从而在其电子特性中产生了引人注目的层和硫族元素依赖性。认识到尚未开发出用于电化学传感器的分层铂二卤化铂，我们在合成PtS ₂，PtSe ₂和PtTe _2时研究了这些化合物。通过加热化学计量的它们各自的元素。为了阐明材料的结构和化学性质，已经进行了广泛的表征。比较了它们在检测H ₂ O ₂时增强信号传导的电化学能力，其中PtTe ₂表现出色。此外，采用电化学预处理来提高灵敏度。对基于PtTe ₂的电化学传感器进行了优化和开发，使其能够以令人满意的灵敏度和选择性的分析先决条件检测H ₂ O ₂。