Developing non‐noble‐metal electrocatalyst for non‐enzymatic H₂O₂ sensing is highly attractive. A facile, two‐step approach has been utilized for the synthesis of PBNCs/SnO₂ QDs/RGO ternary nanocomposite. TEM, SEM, XPS, and XRD techniques were used to the characterize the structural and morphological properties of synthesized ternary nanocomposite. The synthesized ternary nanocomposite has been examined as an electrode material for the electrochemical detection of H₂O₂ using the Amperometry technique. Under optimum conditions, PBNCs/SnO₂ QDs/RGO ternary nanocomposite performed very well in the electrocatalytic reduction of H₂O₂ with a linear dynamic range from 25–225 μM (R²=0.996) with a low detection limit of 71 nM (S/N=3). Compared to the recent literature, PBNCs/SnO₂QDs/RGO ternary nanocomposite based modified electrode exhibit a wider linear dynamic range with a low detection limit. Furthermore, PBNCs/SnO₂ QDs/RGO ternary nanocomposite based modified electrode showed an excellent anti‐interference ability against various common interfering agents. The practical applicability of this ternary nanocomposite based modified electrode was further extended to determine the H₂O₂ in tap water with acceptable recovery. The present performance of PBNCs/SnO₂ QDs/RGO ternary nanocomposite material towards H₂O₂ sensing might widen its application for developing a new type of non‐noble metal‐based non‐enzymatic electrochemical biosensors.

中文翻译：

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普鲁士蓝的纳米立方体-SnO2量子点-还原的氧化石墨烯三元纳米复合材料：一种用于非酶检测H2O2的高效非贵金属电催化剂

开发用于非酶促H ₂ O ₂感测的非贵金属电催化剂非常有吸引力。一种简便的两步法已用于合成PBNCs / SnO ₂ QDs / RGO三元纳米复合材料。TEM，SEM，XPS和XRD技术用于表征合成的三元纳米复合材料的结构和形态特性。已经使用电流分析技术检查了合成的三元纳米复合材料作为电化学检测H ₂ O ₂的电极材料。在最佳条件下，PBNCs / SnO ₂ QDs / RGO三元纳米复合材料在电催化还原H ₂ O _2方面表现出色线性动态范围为25–225μM（R ² = 0.996），检测限低至71 nM（S / N = 3）。与最近的文献相比，PBNCs / SnO ₂ QDs / RGO三元纳米复合材料基修饰电极表现出更宽的线性动态范围，且检测限较低。此外，基于PBNCs / SnO ₂ QDs / RGO三元纳米复合材料的修饰电极对各种常见干扰剂具有优异的抗干扰能力。该三元纳米复合材料基修饰电极的实际适用性得到了进一步的扩展，可以确定自来水中的H ₂ O ₂并具有可接受的回收率。PBNCs / SnO ₂ QDs / RGO三元纳米复合材料对H的性能₂ O ₂传感可能会扩展其在开发新型的基于非贵金属的非酶电化学生物传感器的应用。