Paracetamol-Assisted Self-Assembled ZnO Porous Microstructures for Enhanced CO 2 Detection

摘要: Paracetamol-assisted zinc oxide (ZnO) highly porous micro-flakes were synthesized by a rapid two-step synthesis: precipitation (with sodium hydroxide) and calcination (at 250°C for 1 h). Addition of paracetamol during the synthesis not only inhibited growth ZnO grains but also originated self-assembly resulting in flower like structures. Increase concentration increased porosity on microstructures due to thinner flakes without any structural changes. X-ray diffraction (XRD) shows preferential orientation powders (101) direction hexagonal structure. Raman spectra is dominated E2 (high) optical mode vibration oxygen atoms. Samples tested gas detection at 50, 100, 200, 400, 800 1000 (parts per million) PPM carbon dioxide (CO2). obtained with high paracetamol, enhancing sensing response from 20% 90% time 60 s. These simple, low-cost self-assembled structures enhanced CO2 will be interest several researchers chemical sensor fabrication field.