汪潼,石自良,李国朝,刘新梅

• 1:广西科技大学生物与化学工程学院

摘要(Abstract)：

纳米复合材料因比表面积高、导电性良好和电催化性能优异等优势，已成为新型非酶H_2O_2电化学传感器领域的研究热点。本文以二乙基二硫代氨基甲酸铋（Bi(S_2CNEt_2)_3）和石墨相氮化碳（g-C_3N_4）为前驱体，通过溶剂热法合成了Bi_2S_3/g-C_3N_4核壳结构纳米复合材料，并将其用于构建高效检测H_2O_2的非酶基电化学传感器。分别采用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对Bi_2S_3/g-C_3N_4的结构、组分、形貌进行了表征，采用循环伏安法（CV）和计时电流法研究Bi_2S_3/g-C_3N_4复合材料对H_2O_2的电催化性能。结果表明，Bi_2S_3/g-C_3N_4核壳结构的界面效应增强了电子的传输能力，加速了电极与催化剂之间的电子转移，从而提升了对H_2O_2的电催化反应活性。以Bi_2S_3/g-C_3N_4核壳结构所构建的传感器检测H_2O_2浓度的线性范围为0.163～3.180 mmol/L(R~2=0.980 4)，检测限（LOD）为276 nmol/L(S/N=3)，响应时间小于6 s。同时，该传感器在脱脂牛奶和葡萄糖混合溶液中对H_2O_2的检测仍然保持较高的电催化活性和选择性。

关键词(KeyWords)： Bi_2S_3;g-C_3N_4;核壳结构;纳米复合材料;电化学传感器;H_2O_2

Abstract:

Keywords:

基金项目(Foundation): 广西科技大学博士基金项目（12Z06Z）;; 国家自然科学基金项目（21261003）资助

作者(Author): 汪潼,石自良,李国朝,刘新梅

DOI: 10.16375/j.cnki.cn45-1395/t.2026.03.014

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