Characterization of Cobalt Oxide and Calcium‐Aluminum Oxide nano‐catalyst through Scanning Electron Microscopy, X‐ray diffraction, and Energy Dispersive X‐ray Spectroscopy. Issue 9 (11th May 2020)

• Record Type: Journal Article
• Authors: Gul, Iram; Khan, Shujaul Mulk; Mehmood, Tariq; Ahmad, Zeeshan; Badshah, Hussain; Shah, Hussain
• Is Part Of: Microscopy research and technique. Volume 83:Issue 9(2020)
• Page Start: 1124
• Page End: 1131
• Publication Date: 2020-05-11
• Subjects: Calcium‐Aluminum Oxide -- Cobalt Oxide -- nanotechnology -- Scanning Electron Microscopy -- X‐ray diffraction; Electron microscopy -- Technique -- Periodicals; Microscopy -- Periodicals; Microscopy -- Technique -- Periodicals; 502.825
• DOI: 10.1002/jemt.23504
• Languages: English
• ISSNs: 1059-910X

Abstract

Abstract: The Cobalt Oxide and Calcium‐Aluminum Oxide nano‐catalysts were analyzed using Scanning Electronic Microscopy (SEM), X‐ray diffraction (XRD), and dispersive X‐ray spectroscopy (EDX) techniques. Preliminary results showed that the particles of Cobalt Oxide exhibit sponge like morphology and homogenous distribution as per confirmation via SEM. Its average particle size ranges to 30.6 nm demonstrating enormous number of pores and aggregative in nature. Its various peaks were ranging from 19.2 to 65.4 after XRD analysis. The highest intensity was observed at 36.9 position. The energy dispersive spectroscopy techniques were used to calculate the elements present in sample according to their weight and atomic percentage. The cobalt oxide contain cobalt as the most abundant element with 46.85 wt% and 18.01 atomic percent. It contain oxygen with 30.51 wt% and 43.19 atomic percent. Whereas, SEM of calcium aluminum oxide showed random morphology. According to the calculation of Scherrer equation regarding XRD analysis, it was distributed homogenously with particle size ranges from 30 to 40 nm. Its porous morphology was due to the interconnecting gaps between different particles. It result the eight peaks ranging from 18.1 to 62.7 in XRD spectrum. The highest intensity observed at 35.1 with average crystallite particle size of 25.6 nm. The calcium aluminum oxide contain aluminum 7.45 wt% and 6.93 atomic percent. The calcium was the most abundant element with54.7 wt% and 34.24 atomic percent followed by oxygen with 37.26 wt% and 58.42 atomic percent. It was concluded that the SEM, XRD, and EDX are the most significant techniques to characterize nano‐catalysts in particular and other compounds generally. Abstract : SEM, XRD, and EDX techniques were carried out for the characterization of CoO and CaO‐Al2 O3 nano‐catalysts. Cobalt oxide demonstrates homogenous distribution along with sponge like morphology. SEM of CaO‐Al2 O3 showed random morphology. CaO‐Al2 O3 comprehend aluminum 7.45 wt% and 6.93 atomic percent. The aforementioned techniques were significantly efficient for the characterization of nano‐catalysts.