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. 2020 May 8;8:325. doi: 10.3389/fchem.2020.00325

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Copyright © 2020 Dighole, Munde, Mulik and Sathe.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Superimposed FTIR spectra of MWCNTs, Bi₂O₃ NPs and Bi₂O₃@ MWCNTs. Acid functionalization followed by Bi₂O₃ decoration is confirmed by the appearance of additional signals corresponding to Bi-O.