使用DFT模拟,在B2N单层上探索人类呼吸中含有O的VOC的吸附行为
Rezvan Rahimi1,2, Mohammad Solimannejad1,2
1Department of Chemistry, Faculty of Science, Arak University, Arak 3848177584, Iran. r.rahimi1989@gmail.com.
B2N纳米板有效检测含有氧气的挥发性有机化合物 (VOCs) 在呼吸中,显示早期疾病诊断的希望. 与其他材料相比,这种材料表现出优越的传感能力,即使存在水蒸气.
科学领域:
- 计算材料科学科学 计算材料科学
- 化学传感器 化学传感器
- 纳米技术纳米技术
背景情况:
- 早期疾病诊断依赖于在呼出的呼吸中检测挥发性有机化合物 (VOC).
- 开发敏感和稳定的气体传感器用于VOC检测至关重要.
- - (B2N) 单层正在成为传感应用中的有希望的材料.
研究的目的:
- 研究B2N单层对含氧VOC的吸附和感应特性.
- 为了评估B2N纳米片在水蒸气存在中的稳定性和性能.
- 将B2N的传感能力与其他先进材料进行比较.
主要方法:
- 用密度函数理论 (DFT) 的计算来研究B2N单层相互作用.
- 吸附能量,电子结构和电流被计算出来.
- 非平衡格林函数 (NEGF) 方法用于电力运输计算.
主要成果:
- B2N单层表现出对乙,乙醇,甲醇和甲的强烈吸附,即使与共同吸附的水.
- 在VOC相互作用时观察到带间隙 (5-35%) 和电流的显著变化.
- 计算的回收时间表明有效的气体吸附和传感器再生.
结论:
- B2N纳米片显示出在人类呼吸中检测含氧VOC的极佳潜力.
- 该材料在潮湿环境中的稳定性和卓越的传感性能比现有传感器提供了优势.
- 这些发现支持使用B2N通过呼吸分析进行非侵入性疾病诊断.
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