纳米矿物质,矿物质纳米粒子,以及地球系统
Michael F Hochella1, Steven K Lower, Patricia A Maurice
1Center for NanoBioEarth, Department of Geosciences, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, VA 24061-0420, USA. hochella@vt.edu
概括
矿物质的特性随着纳米尺寸的粒子大小而显著变化. 这些取决于大小的变化影响地质化学和生物地质化学过程,影响地球地球.
科学领域:
- 地质化学 地质化学
- 矿物学是什么?矿物学是什么?
- 环境科学 环境科学
背景情况:
- 矿物传统上被认为具有统一的化学特性.
- 粒子大小对矿物质行为的影响尚未完全理解.
研究的目的:
- 为了研究纳米尺寸颗粒大小对矿物化学性质的影响.
- 探索这些变异对地质化学和生物地质化学反应的影响.
主要方法:
- 矿物质性能作为粒子大小的函数的分析,特别是在纳米范围.
- 研究表面和接近表面的原子结构,晶体形状和表面地形.
主要成果:
- 矿物质的化学特性在纳米尺度 (几到几十纳米) 上表现出显著的变化.
- 这些变化归因于原子结构,晶体形状和较小尺寸的表面地形的变化.
- 矿物质的尺寸依赖性质明显影响地质化学和生物地质化学反应动力学.
结论:
- 矿物质比以前理解的要复杂得多,因为它们的化学变化取决于大小.
- 纳米级矿物质的特性影响水层,地层,生物圈和大气中的相互作用.
- 这一发现丰富了我们对地球系统中矿物质作用的理解.
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