化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (1) : 229-232.

开发与应用

掺Zn纳米TiO₂对6种植物病原菌的抑菌性能研究

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^1,2*

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Preparation of nano TiO₂ doped with Zn and its antibacterial activity for 6 kinds of plant pathogenic bacteria

Ma Chao¹, Zhang Yuefeng^1,2, Wu Ying^1,2

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Received
2017-08-29
Issue Date	Revised Date
2019-03-12	2017-08-29

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摘要

通过溶胶-凝胶法制备TiO₂纳米材料,并进行Zn²⁺掺杂改性,采用冷冻干燥法获得纳米微粉,在自然光下对红枣链格孢、黄瓜枯萎病、辣椒疫霉病、棉花枯萎病、棉花黄萎病和玉米弯孢等6种病原菌做抗菌实验,研究其对植物病原微生物的杀灭与抑制作用。用X射线衍射仪和透射电镜进行物性表征,采用菌丝抑制率法统计病原菌存活数、相对抑菌率。结果表明:冷冻干燥处理的TiO₂材料颗粒大小均匀,抑菌能力好于焙烧处理,Zn²⁺掺杂后纳米TiO₂对植物病原菌抑制与未掺杂时相比有较好地抑制作用,黄瓜枯萎病菌的抑制率达到65.3%,红枣链格孢菌较低仅为47.5%,纳米微粉具有抗暴晒和水浸湿能力。

Abstract

Sol-gel method was used to prepare zinc doped nano TiO₂ materials,used freeze drying method to obtain the nano powder.in natural light the antibacterial experiment for 6 kinds of plant pathogenic bacteria was carried out,studied the killing and inhibition for plant pathogenic microorganisms.X-ray diffraction and transmission electron microscope were used for physical characterization,and the bacterial inhibition rate was used to determine the survival number of pathogen and the relative antibacterial rate,and the antibacterial effect of TiO₂ was identified.The results showed that TiO₂ materials from freeze drying processing had uniform particle size,its bacteriostatic ability was better than that from the roasting process.Nano TiO₂ doped zinc ions had better inhibition than that did not doping for the plant pathogen.The nano powders had the ability to resist exposure and wet.

关键词

纳米TiO₂ / 冷冻干燥 / 植物病原菌 / 抗菌活性

Key words

nano TiO₂ / freeze drying / plant pathogenic bacteria / antibacterial activity

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掺Zn纳米TiO₂对6种植物病原菌的抑菌性能研究[J]. 化工新型材料, 2019, 47(1): 229-232 DOI:

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