Microstructure and Mechanical Behavior of CaCu₃Ti₄O₁₂ Ceramics Hollow Fiber Prepared via Dry/Wet Spinning Method

Abstract:

Dry/wet method was used to prepare CaCuTi₄O₁₂ (CCTO) hollow fibers (HFs) and then the structural and physico-mechanical properties of HFs were characterized by XRD, FESEM, BET and tensile strength, respectively. The outer diameter and thickness of CCTO HFs were found to be 650 μm and 390 μm, respectively. A finger-like macrovoids and sponge-like was observed inside the membrane with a denser structure in the outer layer. It was observed that the crystallite size was increased from 28.5 nm to 37.0 nm while the average pore diameter was decreased from 34.65 nm to 29.16 nm in CCTO hollow fiber with 1.0 wt.% CCTO. In addition, the tensile strength of HFS was significantly improved from 4.84 MPa to 5.54 MPa and elongation at break was decreased from 6.97 % to 5.09 % which is ascribed to the reduction in porosity. All the results indicated the significant effect of CCTO content on properties of CCTO hollow fibers. The finding in this study could lead to a new direction to enhance the properties of HFS with potential application in membranes.

• Periodical: Materials Science Forum (Volume 1010)
• Pages: 239-243
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1010.239
• Online since: September 2020
• Authors: Mohsen Ahmadipour*, Tunmise Ayode Otitoju, Mohammad Arjmand, Zainal Arifin Ahmad, Swee Yong Pung
• Keywords: CCTO Hollow Fiber, Porosity, Tensile Strength

References

[1] H.S. Kushwaha, N.A Madhar, B. Ilahi, P. Thomas, A. Halder, R. Vaish, Efficient solar energy conversion using CaCu3Ti4O12 photoanode for photocatalysis and photoelectrocatalysis, Scientific reports. 6 (2016) 8557.

DOI: 10.1038/srep18557

[2] M. Ahmadipour, M.F. Ain, Z.A. Ahmad, A Short review on copper calcium titanate (CCTO) electroceramic: synthesis, dielectric properties, film deposition, and sensing application, Nano-Micro Lett. 8 (2016) 291-311.

DOI: 10.1007/s40820-016-0089-1

[3] M. Ahmadipour, M.F.  Ain, Z.A. Ahmad, Effect of thickness on humidity sensing properties of RF magnetron sputtered CaCu3Ti4O12 thin films on alumina substrate, IEEE Sens. J. 17(2017) 3224-3230.

DOI: 10.1109/jsen.2017.2686874

[4] A. Sen, K.K. Chattopadhyay, Nanostructured CaCu3Ti4O12 for environmental remediation through visible light active catalysis, J. Mater. Sci: Mater. Electron. 27 (2016) 10393-10398.

DOI: 10.1007/s10854-016-5125-x

[5] O.A. Jimoh, P.U. Okoye, T.A. Otitoju, K.S. Ariffin, Aragonite precipitated calcium carbonate from magnesium rich carbonate rock for polyethersulfone hollow fibre membrane application, J. Clean. Prod., 195 (2018) 79-92.

DOI: 10.1016/j.jclepro.2018.05.192

[6] M. Ahmadipour, M.F.  Ain, Z.A. Ahmad, Fabrication of resistance type humidity sensor based on CaCu3Ti4O12 thick film, Measurement. 94 (2016) 902-908.

DOI: 10.1016/j.measurement.2016.09.030

[7] M. Ahmadipour, M. Arjmand, M.F. Ain, Z.A. Ahmad, S.Y. Pung, Effect of WO3 loading on structural, electrical and dielectric properties of CaCu3Ti4O12 ceramic composites, J. Mater. Sci-Mater. El. 30 (2019) 6806-6810.

DOI: 10.1007/s10854-019-00992-z

[8] M. Ahmadipour, N.A. Rejab, M.F.A. Rahman, M.F. Ain, Z.A. Ahmad, High sensitivity and selectivity of CaCu3Ti4O12-ZnO composites towards acetone gas at room temperature, Ceram. Int. 44 (2018) 6904-6911.

DOI: 10.1016/j.ceramint.2018.01.116

[9] M. Ahmadipour, M.F.  Ain, Z.A. Ahmad, Effects of annealing temperature on the structural, morphology, optical properties and resistivity of sputtered CCTO thin film, J. Mater. Sci-Mater. El. 28 (2017) 12458-12466.

DOI: 10.1007/s10854-017-7067-3