School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi, 710055, China.
Carbohydr Polym. 2019 Sep 1;219:290-297. doi: 10.1016/j.carbpol.2019.05.017. Epub 2019 May 7.
Microbial contamination has evolved as a life-threatening problem afflicting people due to various diseases caused by pathogenic bacteria in drinking water. Thus developing novel antibacterial materials is an urgent need. Herein, a chitosan (CTS)/ biochar-nanosilver (C-Ag) antibacterial composite was prepared by a method of CTS-coated on C-Ag obtained through a facile high-temperature carbonization process using corn straw as the carbon substrate. The results from FT-IR, XRD, SEM and TG-DSC revealed that the biochar loading spherical silver nanoparticles was coated with CTS in the composite. The antibacterial activity of the CTS/C-Ag composite was investigated using the plate counting method with Escherichia coli (E. coli), and the results suggest that the composite exhibited excellent antibacterial activity against E. coli. In this application study, it was proven that the CTS/C-Ag composite exhibits sustainable antibacterial activity and good reusability for drinking water. Therefore, the CTS/C-Ag composite has potential application in drinking water treatment.
微生物污染已成为一个威胁生命的问题，由于饮用水中致病细菌引起的各种疾病，人们深受其害。因此，开发新型抗菌材料是当务之急。本研究采用简便的高温碳化法，以玉米秸秆为碳源，制备了壳聚糖（CTS）/生物炭-纳米银（C-Ag）抗菌复合材料。FT-IR、XRD、SEM 和 TG-DSC 结果表明，在复合材料中，生物炭负载的球形银纳米粒子被 CTS 所包覆。采用平板计数法研究了 CTS/C-Ag 复合材料对大肠杆菌（E. coli）的抗菌活性，结果表明，该复合材料对 E. coli 具有优异的抗菌活性。在这项应用研究中，证明了 CTS/C-Ag 复合材料对饮用水具有可持续的抗菌活性和良好的可重复使用性。因此，CTS/C-Ag 复合材料在饮用水处理方面具有潜在的应用前景。
