Zhang Junyi, Zhang Bo, Chen Xiufang, Mi Bingbing, Wei Penglian, Fei Benhua, Mu Xindong
Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
International Centre for Bamboo and Rattan, Beijing 100102, China.
Materials (Basel). 2017 Feb 27;10(3):239. doi: 10.3390/ma10030239.
Bamboo materials with improved antibacterial performance based on ZnO and graphene oxide (GO) were fabricated by vacuum impregnation and hydrothermal strategies. The Zn2+ ions and GO nanosheets were firstly infiltrated into the bamboo structure, followed by dehydration and crystallization upon hydrothermal treatment, leading to the formation of ZnO/GO nanocomposites anchored in the bulk bamboo. The bamboo composites were characterized by several techniques including scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR), and X-ray diffraction (XRD), which confirmed the existence of GO and ZnO in the composites. Antibacterial performances of bamboo samples were evaluated by the bacteriostatic circle method. The introduction of ZnO/GO nanocomposites into bamboo yielded ZnO/GO/bamboo materials which exhibited significant antibacterial activity against Escherichia coli (E. coli, Gram-negative) and Bacillus subtilis (B. subtilis, Gram-positive) bacteria and high thermal stability. The antimicrobial bamboo would be expected to be a promising material for the application in the furniture, decoration, and construction industry.
通过真空浸渍和水热法制备了具有改进抗菌性能的基于氧化锌和氧化石墨烯（GO）的竹材。首先将锌离子和氧化石墨烯纳米片渗入竹结构中，然后经过水热处理进行脱水和结晶，从而在竹材主体中形成锚定的氧化锌/氧化石墨烯纳米复合材料。通过扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）等多种技术对竹复合材料进行了表征，证实了复合材料中存在氧化石墨烯和氧化锌。采用抑菌圈法评估了竹样品的抗菌性能。将氧化锌/氧化石墨烯纳米复合材料引入竹子中得到了氧化锌/氧化石墨烯/竹材，该材料对大肠杆菌（革兰氏阴性菌）和枯草芽孢杆菌（革兰氏阳性菌）表现出显著的抗菌活性以及高热稳定性。这种抗菌竹材有望成为家具、装饰和建筑行业应用的一种有前景的材料。
