<br>生物炭基纳米银-海藻酸钠-单宁酸复合凝胶珠的抗菌、抗氧化、Cr(VI)吸附和染料吸附效果,International Journal of Biological Macromolecules

当前位置： X-MOL 学术 › Int. J. Biol. Macromol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

生物炭基纳米银-海藻酸钠-单宁酸复合凝胶珠的抗菌、抗氧化、Cr(VI)吸附和染料吸附效果
International Journal of Biological Macromolecules ( IF 7.7 ) Pub Date : 2024-05-19 , DOI: 10.1016/j.ijbiomac.2024.132453
Qian Feng ₁ , Bo Fan ₁ , Yu-Cai He ₂

Affiliation

采用超声波提取法还原Ag制备AgNPs，并将其进一步负载于大麦酒糟壳生物炭上。以海藻酸钠和单宁酸为辅料，制备复合凝胶珠。对基于生物炭的 AgNPs-海藻酸钠-单宁酸复合凝胶珠 (C-Ag/SA/TA) 的物理性质进行了表征。 SEM、FTIR 和 XRD 显示生物炭基 AgNP 与海藻酸钠-单宁酸相容。 CAg 极大地改善了凝胶珠的溶解、溶胀和膨胀。通过琼脂扩散法分析，C-Ag/SA/TA凝胶珠具有较高的抗菌活性（抑菌圈：22mm对和20mm对）。结果表明，C-Ag/SA/TA复合凝胶珠具有较高的抗氧化能力，自由基清除率达到89.0%。通过建立动力学模型研究了凝胶珠的染料吸附性能。 C-Ag/SA/TA凝胶珠对亚甲基蓝和刚果红的最大吸附容量分别为166.57和318.06 mg/g。 Cr(VI)去除率达到96.4%。结果表明，所制备的复合凝胶珠对染料和金属离子具有较高的吸附能力。总体而言，C-Ag/SA/TA复合凝胶珠具有生物相容性，在环境污染治理中具有潜在的应用前景。

"点击查看英文标题和摘要"

Antibacterial, antioxidant, Cr(VI) adsorption and dye adsorption effects of biochar-based silver nanoparticles‑sodium alginate-tannic acid composite gel beads

Ultrasonic extraction of was used for reducing Ag to prepare AgNPs, which were further loaded on barley distiller's grains shell biochar. By supplementary of sodium alginate and tannic acid, composite gel beads were prepared. The physical properties of biochar-based AgNPs‑sodium alginate-tannic acid composite gel beads (C-Ag/SA/TA) were characterized. SEM, FTIR, and XRD showed that biochar-based AgNPs were compatible with sodium alginate-tannic acid. CAg greatly improved the dissolution, swelling, and expansion of gel beads. Through the analysis by the agar diffusion method, C-Ag/SA/TA gel beads had high antibacterial activity (inhibition zone: 22 mm against and 20 mm against ). It was observed that C-Ag/SA/TA composite gel beads had high antioxidant capacity and the free radical scavenging rate reached 89.0 %. The dye adsorption performance of gel beads was studied by establishing a kinetic model. The maximum adsorption capacities of C-Ag/SA/TA gel beads for methylene blue and Congo red were 166.57 and 318.06 mg/g, respectively. The removal rate of Cr(VI) reached 96.4 %. These results indicated that the prepared composite gel beads had a high adsorption capacity for dyes and metal ions. Overall, C-Ag/SA/TA composite gel beads were biocompatible and had potential applications in environmental pollution treatment.

更新日期：2024-05-19

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南