| 基于氧化硅介孔材料的啶酰菌胺纳米农药制备及其性能评价 |
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| 引用本文：张芳,王琪,白诗扬,尚慧,孙继红.基于氧化硅介孔材料的啶酰菌胺纳米农药制备及其性能评价.植物保护学报,2019,46(6):1335-1342 |
| DOI：10.13802/j.cnki.zwbhxb.2019.2018209 |
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| 中文摘要:为解决疏水性杀菌剂啶酰菌胺水分散性差、有效利用率低等问题，采用溶液吸附法，以2种介孔氧化硅分子筛SBA-15与FDU-12为载体构建负载啶酰菌胺的纳米载药体系，对2种纳米载体的形貌及结构等表征特性进行分析，并以立枯丝核菌Rhizoctonia solani为靶标对纳米农药的抑菌作用进行评价。结果表明：成功构建了负载啶酰菌胺的纳米载药体系Bos-SBA-15和Bos-FDU-12，2种纳米载体结构分布均匀，Bos-SBA-15纳米颗粒呈椭球棒状，Bos-FDU-12纳米颗粒呈颗粒状，粒径分别为680.33 nm和870.61 nm；X射线衍射分析和热重分析结果证明啶酰菌胺已成功装载到SBA-15和FDU-12中，载药量分别为31.49%和22.44%。Bos-SBA-15和Bos-FDU-12在高温54℃贮存14 d时分解率仅为4.87%和4.41%，表明所构建纳米农药具有良好的热稳定性。Bos-SBA-15和Bos-FDU-12纳米农药缓释性好，在288 h累积释放率达到69.42%和64.34%。Bos-SBA-15与BosFDU-12纳米农药对立枯丝核菌的EC50分别为34.11 μg/mL和41.54 μg/mL，对立枯丝核菌后期生长阶段的抑制效果更显著。 |
| 中文关键词:啶酰菌胺 二氧化硅介孔材料 纳米载体 缓控释放 |
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| Preparation and evaluation of boscalid nanopesticide based on mesoporous silica |
| Author Name | Affiliation | E-mail | | Zhang Fang | College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China | zhangfang2000@bjut.edu.cn | | Wang Qi | College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China | | | Bai Shiyang | College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China | sybai@bjut.edu.cn | | Shang Hui | College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China | | | Sun Jihong | College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China | |
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| Abstract:In order to solve the problems of poor water dispersibility and ineffective utilization of the hydrophobic bactericide boscalid (Bos), the nanoparticles of Bos-SBA-15 and Bos-FDU-12 loaded with boscalid were constructed by using the solution adsorption method, based on two kinds of molecular sieves SBA-15 and FDU-12 of mesoporous silica. The morphology and structure of the two nanocarriers were characterized, and the antibacterial effect of nanopesticide was evaluated against Rhizoctonia solani. The results showed that the two nanocarriers were evenly distributed; Bos-SBA-15 was ellipsoidal while Bos-FDU-12 was granular with a particle size of 680.33 nm and 870.61 nm, respectively. Xray diffraction analysis and thermogravimetric analysis proved that boscalid had been successfully loaded into the two mesoporous materials with a loading rate of 31.49% and 22.44%, respectively. The decomposition rates of Bos-SBA-15 and Bos-FDU-12 were only 4.87% and 4.41% at 54℃ for 14 days, indicating that nanopesticides had excellent storage stability. The Bos-SBA-15 and Bos-FDU-12 nanopesticides had excellent sustained-release properties and their cumulative release rates could reach 69.42% and 64.34% at 288 h, respectively. The EC50 values of Bos-SBA-15 and Bos-FDU-12 against R. solani were 34.11 μg/mL and 41.54 μg/mL, respectively, with more pronounced inhibitory effect on the late growth stage of R. solani. |
| keywords:boscalid silica mesoporous material nanocarrier controlled-release |
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