上海腾拔质构仪用于测定水凝胶的力学性质
时间:2022-01-11 阅读:797
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上海腾拔仪器科技有限公司 -
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1558289 -
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pdf -
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797次
时间:2022-01-11 阅读:797
提供商
上海腾拔仪器科技有限公司资料大小
1558289资料图片
下载次数
91次资料类型
pdf浏览次数
797次ABSTRACT
The dispersion and macroization of nanomaterials have great potential in the development of high-efficiency adsorbents. To address organic dye pollution, two inexpensive and renewable biological resources, gelatin (Gel) and carboxymethyl cellulose (CMC), were crosslinked by nanostructured polypyrrole (PPy) to achieve a novel PPy-hydrogel. The morphology and composition of the CMC/Gel/PPy hydrogels were characterized. The result shows that the CMC/Gel solution can provide an excellent condition for the dispersion of polypyrrole (PPy). Based on the combination of PPy and the biomass matrix, specific adsorption sites can be formed by the synergistic effect of the functional groups derived from CMC, Gel and PPy. The CMC/Gel/PPy hydrogel has an exclusive adsorption of acid fuchsin (AF). Furthermore, the adsorption process of AF on the CMC/Gel/PPy hydrogel was investigated, and influencing factors, such as adsorbent dosage, temperature, initial dye concentration and adsorbent recyclability, were discussed in detail. Under optimal conditions, the CMC/Gel/PPy hydrogel can reach an adsorption equilibrium within 50minutes in a 60mg/L AF solution at 24 C, and the AF removal efficiency was approximately 94%. It was also observed that the AF removal efficiencies of CMC/Gel/PPy remained almost unchanged after at least seven consecutive adsorption–desorption cycles.
GRAPHICAL ABSTRACT