Figiela Beata, Tyliszczak Bożena, Bańkosz Magdalena, Nikolov Aleksandar, Korniejenko Kinga
Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Street, 31864 Cracow, Poland.
Bulgarian Academy of Science (IMC-BAS), Institute of Mineralogy and Crystallography, Acad. G. Bonchev Str., bl. 107, 1113 Sofia, Bulgaria.
Materials (Basel). 2025 May 29;18(11):2560. doi: 10.3390/ma18112560.
The main aim of this research was to synthesize the new geopolymer composite and test its antibacterial properties. The new composites are based on a geopolymer matrix, with the addition of carbon fiber, nano-silica and antibacterial nanopowder. The first stage of this research was the synthesis of geopolymer composites containing variable proportions of nano-additives and, as a reference material, cement. The next step was bacterial cultivation. Two different bacterial strains were selected, Gram-positive and Gram-negative ( and ). In this stage, the agar microbiological medium is used for the evaluation of bacterial growth inhibition by cement and geopolymers. In the final stage, the growth of the colony was observed and the pH measurements were taken. The final assessment of efficiency was made by using optical microscopy and a colony counter based on the Petri dish. The test performed showed that the main mineralogical components are quartz, 55.0%, and mullite, with 42.1% of crystalline ingredients. EDS analysis shows that the main oxide component is SiO, about 50.9%. The obtained results connected with bacteria growth show the growth of both types of bacteria on materials; however, after several days, the growth was inhibited. An assessment of microorganism growth inhibition by cement and geopolymers shows the better efficiency of geopolymer composites in this area for both types of colonies (Gram-positive and Gram-negative). The new element in this research was to plan the research from the point of view of its application in the water environment. The provided research can be useful for the inhibition of biofouling phenomena on marine and inland water infrastructure.
本研究的主要目的是合成新型地质聚合物复合材料并测试其抗菌性能。新型复合材料基于地质聚合物基体，添加了碳纤维、纳米二氧化硅和抗菌纳米粉末。本研究的第一阶段是合成含有不同比例纳米添加剂的地质聚合物复合材料，并以水泥作为参考材料。下一步是细菌培养。选择了两种不同的细菌菌株，革兰氏阳性菌和革兰氏阴性菌（ 和 ）。在这个阶段，使用琼脂微生物培养基来评估水泥和地质聚合物对细菌生长的抑制作用。在最后阶段，观察菌落的生长情况并进行pH测量。通过光学显微镜和基于培养皿的菌落计数器进行最终的效率评估。所进行的测试表明，主要矿物成分是石英，占55.0%，莫来石占结晶成分的42.1%。能谱分析表明，主要氧化物成分是SiO，约占50.9%。与细菌生长相关的所得结果表明，两种类型的细菌在材料上均有生长；然而，几天后，生长受到抑制。对水泥和地质聚合物对微生物生长抑制作用的评估表明，地质聚合物复合材料在这方面对两种类型的菌落（革兰氏阳性菌和革兰氏阴性菌）都具有更好的效率。本研究中的新元素是从其在水环境中的应用角度来规划研究。所提供的研究对于抑制海洋和内陆水基础设施上的生物污损现象可能是有用的。
