Data from: Improved mould-resistance and antibacterial activity of bamboo coated with ZnO/graphene

Bamboo is easier to mould and attack by fungi because of its higher content of starch and sugar. To make bamboo-based outdoor materials，a new type bamboo timber with improved mould-resistance and antibacterial activity, coated with reduced graphene oxide and nano crystal ZnO (abbreviated as RGO@ZnOBT), was fabricated by two steps of dip-dry and hydro-thermal process. A possible synthesis mechanism of RGO@ZnOBT making were discussed by X-ray diffraction, scanning electron microscopy, transmission electron microscope, energy-dispersal X-ray analysis, X-ray photo-electron spectroscopy, and Fourier transform infrared spectroscopy. According to the China standard test method, the Aspergillus niger mould resistance of RGO@ZnOBT is grade 2, meanwhile the Trichoderma virideduring ang Penicillium citrinum mould resistance of RGO@ZnOBT are grade 0, which are better than the grade 4 of original bamboo timber (abbreviated as BT). The Escherichia coli resistance test showed that antibacterial circle of RGO@ZnOBT is 3 mm, which is greatly higher than BT (0 mm). The antibacterial activity of treated bamboo is greatly significantly improved.由于淀粉与糖分含量更高，竹子更易发生霉变并遭受真菌侵袭。为制备竹基户外用材，本研究通过浸涂干燥与水热两步法，制备了一种经还原氧化石墨烯（reduced graphene oxide）与纳米氧化锌（nano crystal ZnO）复合包覆、抗霉与抗菌性能均得到提升的新型竹材（缩写为RGO@ZnOBT）。本研究采用X射线衍射（X-ray diffraction）、扫描电子显微镜（scanning electron microscopy）、透射电子显微镜（transmission electron microscope）、能量色散X射线能谱（energy-dispersal X-ray analysis）、X射线光电子能谱（X-ray photo-electron spectroscopy）以及傅里叶变换红外光谱（Fourier transform infrared spectroscopy）等表征手段，对RGO@ZnOBT的可能合成机制进行了探讨。按照中国标准试验方法，RGO@ZnOBT对黑曲霉（Aspergillus niger）的抗霉等级为2级，对绿色木霉（Trichoderma viride）与桔青霉（Penicillium citrinum）的抗霉等级均为0级，各项指标均优于原竹材（original bamboo timber，缩写为BT）的4级抗霉性能。大肠杆菌抗菌试验结果表明，RGO@ZnOBT的抑菌圈直径达3mm，显著高于原竹材的0mm。经改性处理的竹材抗菌性能得到了显著提升。