Synthesis of nitrogen-doped ZnO nanocrystallites with one-dimensional structure and their catalytic activity for ammonium perchlorate decomposition

• Published in: Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology Vol. 12; no. 6; pp. 2211 - 2219
• Main Authors: Zheng, Min, Wang, Zuo-shan, Wu, Jia-qing, Wang, Qing
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.08.2010; Springer Nature B.V
• Subjects: Ammonium; Catalytic activity; Characterization and Evaluation of Materials; Chemistry and Materials Science; Decomposition; Inorganic Chemistry; Lasers; Materials Science; Morphology; Nanocrystals; Nanoparticles; Nanorods; Nanostructure; Nanotechnology; Nitrogen; Optical Devices; Optics; Perchlorate; Photonics; Physical Chemistry; Raw materials; Research Paper; Thermal decomposition; Urea; Zinc oxide; Nanocrystallite; Nitrogen-doped ZnO; Catalysis; Thermal decomposition; Ammonium perchlorate
• ISSN: 1388-0764; 1572-896X
• DOI: 10.1007/s11051-009-9787-7

In this study, nitrogen-doped ZnO (N-doped ZnO) nanocrystallites with a one-dimensional structure were synthesized successfully via an advanced wet chemical technique, and their microstructures were characterized by SEM, HRTEM, XRD, and XPS. The catalytic performance of the as-synthesized samples was evaluated by investigating their effect on the thermal decomposition of ammonium perchlorate (AP) by DSC and TG. Results indicate that the morphologies of N-doped ZnO nanocrystallites mainly depend on the presence of urea in the raw materials. Nanocrystallites with peculiar morphology, in which numerous nanorods with a diameter of 40–50 nm arrange orderly and symmetrically in hollow nanotubes with a diameter of 200–800 nm and thickness of 20–30 nm, can be produced when urea is used as a raw material. The as-synthesized N-doped ZnO sample with peculiar morphology drives the thermal decomposition peak of AP decrease about 163 °C with a strong decomposition heat about 1,325 J/g, and the activation energy also decreases from 178.22 to 93.51 kJ/mol. The enhanced catalytic activity of N-doped ZnO sample can be attributed to oxygen vacancies and other defects induced by the doping of nitrogen.