文章信息

【作者】：Yueyue Li, Yuanzhen Liu, Yi Lu, Ziqi Liu, Chengming Sui, Yilin Wang, Lin Yang, Fengmin Liu,* Peng Sun, Fangmeng Liu, and Geyu Lu*
【题目】：Preparation of BiOI-Functionalized ZnO Nanorods for Ppb-Level NO2 Detection at Room Temperature
【关键词】：ZnO nanorods, BiOI, NO2 sensor, visible light, Low detection limit, fast speeds
【版面信息】：Preparation of BiOI-Functionalized ZnO Nanorods for Ppb-Level NO(2) Detection at Room Temperature. ACS Sens 2022, 7, 3915-3922.

v> Light activation is an effective method to improve sensor performance at room temperature (RT). This work realized the effective detection of trace-level NO2 at RT under visible light by combining ZnO with the excellent photocatalyst BiOI. A 1.5 atom % BiOI−ZnO-based sensor under 520 nm light exhibited optimal sensing properties with the maximum responses (13.9 to 1 ppm NO2), fast response/recovery time (66 s/47 s to 1 ppm), and a low detection limit of 25 ppb (theoretically 0.34 ppb). In the meantime, the sensor also possessed excellent selectivity, repeatability, and stability. The excellent properties were attributed to the high concentration of oxygen vacancies and the prolonged lifetime of photogenerated carriers. In addition, the observed photovoltaic effect of the sensor at RT indicated that the sensor held application prospects in the photovoltaic self-power field.