下一代肥料:作为持续释放N-肥料的TiO2-Chitosan复合物超吸收剂
Misba Jan1, Aabid H Shalla2, Kowsar Majid1
1Department of Chemistry, National Institute of Technology, Srinagar, Jammu and Kashmir, India190006.
Langmuir : the ACS journal of surfaces and colloids
|March 3, 2025
概括
合成了一种新的TiO2-基托复合物超吸收剂,用于持续释放肥料. 这种先进的水凝表现出良好的胀和受控的尿素释放,显著改善农业应用的种子发芽.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 农业科学 农业科学
背景情况:
- 生物可降解聚合物奇托正在为农业应用进行探索.
- 二氧化 (TiO2) 纳米粒子为材料增强提供了独特的特性.
- 开发可控释放肥料对于有效的营养物质输送和减少环境影响至关重要.
研究的目的:
- 使用TiO2-基托复合物超吸收剂合成持续释放肥料.
- 描述合成材料并评估其膨胀和尿素加载能力.
- 为了研究肥料释放动力学及其对种子发芽的影响.
主要方法:
- 通过希夫基凝结合成TiO2-基托复合物超吸收剂.
- 使用FTIR,XRD,SEM-EDX,XPS,TGA-DSC和风湿学进行材料表征.
- 胀行为,尿素载荷能力,释放动力学 (科尔斯迈耶-佩帕斯模型) 和种子发芽测试 (Brassica oleracea).
主要成果:
- 合成的水凝表现出很好的膨胀 (706.6%) 和高尿素负载能力 (90%的酸性pH).
- 观察到受控的尿素释放,符合Fickian扩散模型 (R2=0.89,n=0.27在pH4时).
- 与纯尿素相比,含尿素的水凝显著增强了种子发芽 (274.69%的发芽指数).
结论:
- TiO2-基托复合物超吸收剂有效地提供持续释放肥料,特别是在酸性条件下.
- 该材料显示出农业用途的潜力,改善营养的可用性和促进植物生长.
- 这项研究突出了开发环保和高效肥料系统的有希望的方法.
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