Fabrication of CS/GA/RGO/Pd composite hydrogels for highly efficient catalytic reduction of organic pollutants.
Fabrication of CS/GA/RGO/Pd composite hydrogels for highly efficient catalytic reduction of organic pollutants.
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CS/GA/RGO/Pd复合水凝胶的制备用于高效催化还原有机污染物
作者：
本研究以具有大比表面积的天然高分子材料壳聚糖(CS)和氧化石墨烯(GO)为原料，以戊二醛(GA)为交联剂，制备了一种新型CS/RGO复合水凝胶。此外，通过负载钯纳米颗粒(Pd NPs)制备了CS/GA/RGO/Pd复合水凝胶。用扫描电子显微镜、电子显微镜、X射线衍射仪、热重分析仪和比表面积测试仪对所制备的水凝胶进行了形貌和微观结构的表征。对CS/GA/RGO/Pd复合水凝胶的催化性能进行了分析，实验结果表明，CS/GA/RGO/Pd复合水凝胶对对硝基苯酚(4-NP)和邻硝基苯胺(2-NA)的降解具有良好的催化性能。因此，本研究在废水处理方面具有潜在的应用前景，为复合水凝胶的设计提供了新的信息。
In this study, natural polymer material chitosan (CS) and graphene oxide (GO) with large specific surface area were used to prepare a new CS/RGO-based composite hydrogel by using glutaraldehyde (GA) as cross-linking agent. In addition, a CS/GA/RGO/Pd composite hydrogel was prepared by loading palladium nanoparticles (Pd NPs). The morphologies and microstructures of the prepared hydrogels were characterized by SEM, TEM, XRD, TG, and BET. The catalytic performance of the CS/GA/RGO/Pd composite hydrogel was analyzed, and the experimental results showed that the CS/GA/RGO/Pd composite hydrogel had good catalytic performance for degradation of p-nitrophenol (4-NP) and o-nitroaniline (2-NA). Therefore, this study has potential application prospect in wastewater treatment and provides new information for composite hydrogel design.
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