Rakshit T, Mandal S, Mishra P, Dhar A, Manna I, Ray S K
Advanced Technology Development Centre, IIT Kharagpur 721302, India.
J Nanosci Nanotechnol. 2012 Jan;12(1):308-15. doi: 10.1166/jnn.2012.5134.
ZnO nanostructures were fabricated on copper substrates by hydrothermal method at an optimized growth temperature of -95 degrees C. Structural properties were investigated by field emission scanning electron and transmission electron microscopy. Distinct morphologies were found to be formed at different growth times. The formation of nanotubes mainly involved the initial nucleation followed by the growth of nanorods at 95 degrees C, and then with the increase of dissolution time at room temperature, the preferential chemical dissolution of the metastable Zn-rich [0001] polar surfaces resulted in removing the atoms from the surfaces, thus leading to the thinning of the wall of the nanostructures. Completely hollow ZnO nanotubes could be obtained at a high dissolution time. The room temperature photoluminescence and optical absorption properties of ZnO nanotubes have been studied as a function of dissolution time. The efficacy of ZnO nanotubes for glucose sensing applications has been studied.
通过水热法在铜衬底上制备了氧化锌纳米结构，优化的生长温度为95摄氏度。通过场发射扫描电子显微镜和透射电子显微镜研究了其结构性能。发现在不同的生长时间形成了不同的形态。纳米管的形成主要涉及初始成核，随后在95摄氏度下纳米棒生长，然后随着室温下溶解时间的增加，富含锌的亚稳[0001]极性表面的优先化学溶解导致表面原子被去除，从而导致纳米结构壁变薄。在高溶解时间下可以获得完全中空的氧化锌纳米管。研究了氧化锌纳米管的室温光致发光和光吸收性能随溶解时间的变化。研究了氧化锌纳米管在葡萄糖传感应用中的效能。
