Exploiting high-quality photoactive material with visible light absorption, high photoelectrochemical (PEC) activity and stability is of great importance for developing high-performance PEC sensing. In this paper, amorphous molybdenum sulfide (a-MoS_x)/reduced graphene oxide (RGO) hybrid film was directly grown on indium tin oxide (ITO) via a facile one-step electrodeposition, followed by a post annealing process. The uniform a-MoS_x/RGO hybrid film exhibited significantly enhanced photocurrent, fast photoelectric switching behavior and robust stability under the visible light. Direct utilization of a-MoS_x/RGO as an efficient photoanode for glucose determination had been demonstrated for the first time. Rapid response and robust stability for glucose determination in a wide linear range from 0.15 to 16 mM with a low detection limit were obtained. The reliability of detecting glucose in serum samples was demonstrated. This work stresses the importance of one-step electrodeposition preparation of a-MoS_x/RGO hybrid film as high-quality photoanode for PEC bioanalysis.

开发具有可见光吸收，高光电化学（PEC）活性和稳定性的高质量光敏材料对于开发高性能PEC传感至关重要。在本文中，通过简便的一步电沉积，在氧化铟锡（ITO）上直接生长非晶态硫化钼（a-MoS _x）/还原氧化石墨烯（RGO）杂化膜，然后进行后退火工艺。均匀的a-MoS _x / RGO杂化膜在可见光下显示出显着增强的光电流，快速的光电开关行为和稳定的稳定性。直接利用a-MoS _x首次证明了/ RGO作为一种有效的葡萄糖测定光阳极。在0.15至16 mM的宽线性范围内，以低检测限获得了用于葡萄糖测定的快速响应和强大的稳定性。证明了检测血清样品中葡萄糖的可靠性。这项工作强调了一步法电沉积制备a-MoS _x / RGO杂化膜作为PEC生物分析的高质量光阳极的重要性。