Increased risk of heavy metal accumulation in mangrove seedlings in coastal wetland environments due to microplastic inflow.

The recovery phase of mangrove seedlings in coastal wetland ecosystems can be negatively affected by exposure to external pollutants. This study aimed to investigate the impact of microplastics (MPs) influx, specifically polystyrene (PS) and polymethyl methacrylate (PMMA), on the growth of Aegiceras corniculatum seedlings and their accumulation of heavy metals (HMs). PS and PMMA significantly increased HMs accumulation (up to 21.

Effect of Pr/Zn on the anti-humidity and acetone-sensing properties of CoO prepared by electrospray.

CoO is a P-type metal-oxide semiconductor which can realize acetone detection at a lower temperature, but the lower working temperature brings the enhanced humidity effect. In order to solve the problem of a CoO gas sensor being easily affected by humidity, an acetone-sensing material of CoO mixed with Pr/Zn was prepared by electrospray in this work. The optimal working temperature of Pr/Zn-CoO is 160 °C, and the detection limit can reach 1 ppm.

High acetone sensing properties of InO-NiO one-dimensional heterogeneous nanofibers based on electrospinning.

Pure NiO nanofibers and the InO-NiO one-dimensional heterogeneous nanofibers were prepared by electrospinning, and the gas sensing properties to acetone were also investigated. Material characterization proved that the heterogeneous nanofibers were composed of InO and NiO, and the nanofibers exhibited an enhanced sensitivity to acetone. At the optimal working temperature, the response of InO-NiO nanofibers to 50 ppm acetone was more than 10 times higher than that of pure NiO nanofibers.