Abstract：
A BiVO4/Fe2O3 heterojunction for non-enzymatic photoelectrochemical (PEC) determination of hydrogen sulfide (H2S) is reported. The BiVO4/Fe2O3 heterojunction promoted the separation of photo-generated carriers, reduced electron-hole recombination, and thus improved electron collection and photocurrent. The proposed BiVO4/Fe2O3/FTO sensor exhibited a linear range of 1-500 μM and a detection limit of 0.51 nM H2S. In addition, high selectivity, good reproducibility, and stability were obtained for H2S sensing. The detection of H2S in water and serum samples demonstrated its feasibility. This work provides a new strategy to detect and understand the bio-function of H2S in the biological environment.
摘要：
报道了一种用于非酶光电化学（PEC）测定硫化氢（H2S）的BiVO4/Fe2O3异质结。BiVO4/Fe2O3异质结促进了光生载流子的分离,减少电子-空穴复合，从而改善了电子收集和光电流。提出的BiVO4/Fe2O3/FTO传感器的线性范围为1-500μM，检测限为0.51nMH2S。此外,高选择性,重现性好,并获得了H2S传感的稳定性。水和血清样品中H2S的检测证明了其可行性。这项工作为检测和理解H2S在生物环境中的生物功能提供了新的策略。
