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OpenAccess Article
A facile thermal-treatment route to synthesize ZnO nanosheets and effect of calcination temperature
by Najib Ahmed1
  • 1 Cardiothoracic Surgery Department, General University Hospital of Larissa, University of Thessaly, 41110 Larissa, Greece

Academic Editors: Clement Medrinal, Marius Lebret and Michelle Chatwin

Healthcare 2021, 9(12), 1735; https://doi.org/10.3390/healthcare9121735 (registering DOI)

Received: 3 November 2021 / Revised: 10 December 2021 / Accepted: 12 December 2021 / Published: 15 December 2021

(This article belongs to the Special Issue Physiotherapy and Cardiothoracic Care in Acute and Chronic Care)

Abstract

A facile thermal-treatment route was successfully used to synthesize ZnO nanosheets. Morphological, structural, and optical properties of obtained nanoparticles at different calcination temperatures were studied using various techniques. The FTIR, XRD, EDX, SEM and TEM images confirmed the formation of ZnO nanosheets through calcination in the temperature between 500 to 650°C. The SEM images showed a morphological structure of ZnO nanosheets, which inclined to crumble at higher calcination temperatures. The XRD and FTIR spectra revealed that the samples were amorphous at 30°C but transformed into a crystalline structure during calcination process. The average particle size and degree of crystallinity increased with increasing calcination temperature. The estimated average particle sizes from TEM images were about 23 and 38 nm for the lowest and highest calcination temperature i.e. 500 and 650°C, respectively. The optical properties were determined by UV–Vis reflection spectrophotometer and showed a decrease in the band gap with increasing calcination temperature.

Keywords: physiotherapy; open heart surgery;early mobilization;enhanced physiotherapy; coronary artery bypass grafting; early physiotherapy;randomized-controlled trial

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

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MDPI and ACS Style

Afxonidis, G.; Moysidis, D.V.; Papazoglou, A.S.; Tsagkaris, C.; Loudovikou, A.; Tagarakis, G.; Karapanagiotidis, G.T.; Alexiou, I.A.; Foroulis, C.; Anastasiadis, K. Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial. Healthcare 2021, 9, 1735. https://doi.org/10.3390/healthcare9121735 AMA Style Afxonidis G, Moysidis DV, Papazoglou AS, Tsagkaris C, Loudovikou A, Tagarakis G, Karapanagiotidis GT, Alexiou IA, Foroulis C, Anastasiadis K. Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial. Healthcare. 2021; 9(12):1735. https://doi.org/10.3390/healthcare9121735 Chicago/Turabian Style Afxonidis, Georgios, Dimitrios V. Moysidis, Andreas S. Papazoglou, Christos Tsagkaris, Anna Loudovikou, Georgios Tagarakis, Georgios T. Karapanagiotidis, Ioannis A. Alexiou, Christophoros Foroulis, and Kyriakos Anastasiadis. 2021. "Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial" Healthcare 9, no. 12: 1735. https://doi.org/10.3390/healthcare9121735

AMA Style

Afxonidis, G.; Moysidis, D.V.; Papazoglou, A.S.; Tsagkaris, C.; Loudovikou, A.; Tagarakis, G.; Karapanagiotidis, G.T.; Alexiou, I.A.; Foroulis, C.; Anastasiadis, K. Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial. Healthcare 2021, 9, 1735. https://doi.org/10.3390/healthcare9121735 AMA Style Afxonidis G, Moysidis DV, Papazoglou AS, Tsagkaris C, Loudovikou A, Tagarakis G, Karapanagiotidis GT, Alexiou IA, Foroulis C, Anastasiadis K. Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial. Healthcare. 2021; 9(12):1735. https://doi.org/10.3390/healthcare9121735 Chicago/Turabian Style Afxonidis, Georgios, Dimitrios V. Moysidis, Andreas S. Papazoglou, Christos Tsagkaris, Anna Loudovikou, Georgios Tagarakis, Georgios T. Karapanagiotidis, Ioannis A. Alexiou, Christophoros Foroulis, and Kyriakos Anastasiadis. 2021. "Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial" Healthcare 9, no. 12: 1735. https://doi.org/10.3390/healthcare9121735

Chicago/Turabian Style

Afxonidis, G.; Moysidis, D.V.; Papazoglou, A.S.; Tsagkaris, C.; Loudovikou, A.; Tagarakis, G.; Karapanagiotidis, G.T.; Alexiou, I.A.; Foroulis, C.; Anastasiadis, K. Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial. Healthcare 2021, 9, 1735. https://doi.org/10.3390/healthcare9121735 AMA Style Afxonidis G, Moysidis DV, Papazoglou AS, Tsagkaris C, Loudovikou A, Tagarakis G, Karapanagiotidis GT, Alexiou IA, Foroulis C, Anastasiadis K. Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial. Healthcare. 2021; 9(12):1735. https://doi.org/10.3390/healthcare9121735 Chicago/Turabian Style Afxonidis, Georgios, Dimitrios V. Moysidis, Andreas S. Papazoglou, Christos Tsagkaris, Anna Loudovikou, Georgios Tagarakis, Georgios T. Karapanagiotidis, Ioannis A. Alexiou, Christophoros Foroulis, and Kyriakos Anastasiadis. 2021. "Efficacy of Early and Enhanced Respiratory Physiotherapy and Mobilization after On-Pump Cardiac Surgery: A Prospective Randomized Controlled Trial" Healthcare 9, no. 12: 1735. https://doi.org/10.3390/healthcare9121735

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Author(s) Biography

Najib Ahmed

Najib Ahmed

Cardiothoracic Surgery Department, AHEPA University hospital, Aristotle University of Thessaloniki, Greece