Summary
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 completely different strategies, specifically radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD) and radical-injection (RI)-PECVD. Obtained samples had 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 development, nanowalls choose 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 development. Within the case of CNWs grown utilizing RI-PECVD, nanowalls are extra vertical and self-supported. That is due to the speedy and sustained manufacturing of hydrogen radicals that forestall the secondary development of carbon nanowalls. As well as, the affect of pores diameter and membrane thickness on the expansion of RI-PECVD CNWs was revealed.
