Cellulose Paper-Based Adsorbent of Heavy Metals in Water Fabricated by One-Step Ultrafast Ligation of Diazofluorene.

ABSTRACT: This study outlines the development of a cellulose paper-based adsorbent, Cell-Flu, achieved by an innovative covalent ligation of 4,5-diazafluorene motifs to cellulose paper. The ultrafast approach entails the insertion of 9-diazo-4,5-diazafluorene into the O-H bonds present within the glucose units of cellulose under catalyst-free conditions. The grafting occurs in only 15 min at 25 °C through a simple impregnation strategy. Through thorough experimentation, we fine-tuned the adsorption properties of Cell-Flu in aqueous media for Ni-(II) and Cu-(II) by adjusting pH levels, contact duration, and adsorbent dose. Additionally, we describe the capability of Cell-Flu to adsorb other heavy metals like Pb-(II), Cd-(II), and Pd-(II), uncovering its broader metal removal potential. High levels of

SUBMITTER: Nongbe MC 

PROVIDER: S-EPMC12444561 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature