Creation of distinctive shapes by coordination of alumina nanopores and carbon nanowalls: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0




This work presents experimental outcomes on the synthesis of сarbon nanowalls (CNWs) with predefined morphology on the floor of the nanoporous alumina membrane utilizing two totally different strategies, particularly radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD) and radical-injection (RI)-PECVD. Obtained samples have been characterised by the strategies of scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy. From the microstructure analyses of CNWs, it has been noticed that there’s a time dependence on the reproducibility of membrane morphology by CNWs. On the early stage of nanowalls progress, nanowalls favor to develop across the edges of nanopores and proceed to develop vertically with time. In RF-PECVD, the nanopores’ measurement begins to shrink drastically and pores are fully lined by secondary flake-like nanowalls after 25 minutes of progress. Within the case of CNWs grown utilizing RI-PECVD, nanowalls are extra vertical and self-supported. That is due to the fast and sustained manufacturing of hydrogen radicals that stop the secondary progress of carbon nanowalls. As well as, the affect of pores diameter and membrane thickness on the expansion of RI-PECVD CNWs was revealed.