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. 2019 Aug 13;7:552. doi: 10.3389/fchem.2019.00552

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Copyright © 2019 Al-Saad, El-Azazy, Issa, Al-Yafie, El-Shafie, Al-Sulaiti and Shomar.

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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(A) Upper panel: FTIR of RDP (upper spectrum) and BDP (lower spectrum). (B) Lower panel: Raman spectra of BDP before (upper spectrum) and after (lower spectrum) adsorption of Cu(II).