Zinc oxide tetrapod sponges for environmental pollutant monitoring and degradation

• DOI: 10.1016/j.jmrt.2022.11.142
• Publication Date: 2022-11-26T14:44:16Z
• Authors: Kyungtaek Lee; Manisha Sahu; Sugato Hajra; Reza Abolhassani; Krystian Mistewicz; Bartłomiej Toroń; Horst-Günter Rubahn; Yogendra Kumar Mi...; Hoe Joon Kim
• Keywords: Methyl orange; Tetrapod (structure); Nanomaterials; Methylene blue; Degradation; Environmental Pollution

Environmental monitoring systems enable the collection of information about various environmental parameters, pollution levels, and presence hazards affecting human marine life. Highly sensitive, stable, low-power-consuming sensors are vital for such operations. Nanomaterials with different surface morphologies can play a role in multiple applications, as gas sensors, photocatalysts, erosion monitoring, or fine dust sensor. Zinc oxide (ZnO) tetrapod, particular, shows 3D that exhibit exciting properties, making them applicable several device engineering. This work provides simple yet high-throughput single-step synthesis ZnO tetrapod arm sizes using flame transport method at growth conditions. The physicochemical structural properties have been deeply investigated to shed light on formation these structures. detailed mechanism material photocatalyst has presented detail. sponge-based sensor selectively sense NO2 limit detection (LOD) value 8.56 ppb. In addition, tetrapods samples high photocatalytic activity toward methylene blue methyl orange degradation under UV illumination. reaction rate constants 3.6 (2)·10−4 s−1 1.7 (1)·10−4 determined decomposition orange, respectively. results suggest tetrapod-based sponges be promising building next-generation systems.