Cu₂O/GO异质结构对H₂S检测性能的研究
Study on the Performance of Cu₂O/GO Heterostructure for H₂S Detection

体内H₂S分子的浓度变化可反映多种疾病发展状况，在心血管疾病、唐氏综合征、肝硬化、糖尿病和癌症等疾病诊断中发挥着重要作用。石墨烯具有原子厚度的二维共轭结构、巨大的比表面积、优异的导电性以及稳定性，在H₂S传感领域得到了广泛的应用。基于石墨烯的H₂S传感器灵敏响应度高，检测限低于100 ppb。本研究通过二维电化学沉积法构建了基于氧化石墨烯(GO)和Cu₂O的异质结构材料，该材料具有清晰的异质界面和优良的检测性能，可作为制备H₂S气体传感器的材料。以此材料制作的传感器可以对呼出H₂S气体进行检测和分析，从而进行疾病的快速诊断。
Changes in the concentration of H₂S molecules in the body can serve as indicators for the development of various diseases, playing a crucial role in the diagnosis of cardiovascular disease, Down’s syndrome, liver cirrhosis, diabetes, and cancer. Graphene, owing to its atomic-thick two-dimensional conjugate structure, vast specific surface area, excellent conductivity, and stability, has been found widespread application in the field of H₂S sensing. The H₂S sensor based on graphene exhibits high sensitivity and responsiveness, with a detection limit below 100 ppb. In this study, a heterostructure material based on graphene oxide (GO) and Cu₂O was fabricated using a two-dimensional electrochemical deposition method. The material exhibits a distinct heterostructure interface and demonstrates excellent detection performance, making it suitable for the preparation of H₂S gas sensors. Sensors constructed with this material can effectively detect and analyze exhaled H₂S gas, facilitating the rapid diagnosis of diseases.