Green synthesis of Cu2O/non-woven fabrics for selective removal of anionic dyes
Environmental Chemistry(2023)
Abstract
The composite materials of Cu2O/non-woven fabrics (Cu2O/NF) were green synthesized by using tea polyphenol as the reducing agent, and utilized for selective removal of dyes. The morphological and structural properties of Cu2O/NF were analyzed with XRD, EDS, SEM, FTIR, BET and XPS, and found that Cu2O particles were somewhat ordered spherical shaped and evenly distributed on the non-woven fabrics. The Cu2O/NF presented good capacity of selective removal towards anionic dyes such as OrangeII, Congo Red and Methyl Orange. Amongst the removal rate of Orange IIreached 96.26%. The removal processes were well fitted as pseudo second-order dynamic and Langmuir adsorption isotherm models. Furthermore, the removal rate remained at 75.41% after three cycled use, suggesting good stability and reusability of the prepared Cu2O/NF.
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Key words
green synthesis,tea polyphenols,Cu2O,non-woven fabrics,selective removal
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