作为微生物影响腐蚀 (MIC) 抑制剂的硫胺的原子分析分析
Mohammad Asif1, N V Saidileep Korlapati2, Faisal Khan2
1Centre for Risk, Integrity, and Safety Engineering (C-RISE), Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL A1B 3X5, Canada.
ACS omega
|September 23, 2024
概括
密度功能理论 (DFT) 显示,硫胺抑制剂通过吸附到铁表面,有效防止微生物腐蚀. 这些化合物,包括硫胺和硫法醇,显示出显著的抗腐蚀性质,通过计算分析验证.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 电化学 电化学 电化学
背景情况:
- 微生物腐蚀在各种工业应用中构成重大挑战.
- 研究腐蚀的传统实验方法在阐明分子机制方面存在局限性.
- 密度函数理论 (DFT) 提供了一个补充的方法来理解原子层面的腐蚀抑制.
研究的目的:
- 研究四种硫胺衍生物作为铁表面微生物腐蚀抑制剂的有效性.
- 使用DFT阐明硫胺在Fe (100) 表面上的吸附机制和电子特性.
- 为了将计算结果与对腐蚀抑制的实验观测相关联.
主要方法:
- 密度函数理论 (DFT) 的计算被用来研究硫胺 (SFC),硫胺 (SFM),硫胺 (SFP) 和硫法 (SFT).
- 分析包括相互作用能量,电子描述符,状态密度 (DOS) 和人口分析.
- 应用0.6 eV的电场来模拟影响微生物活动的条件.
主要成果:
- 硫胺均吸附到铁表面,阻断活性点并降低腐蚀率.
- 增加的相互作用能量证实了硫胺作为微生物抑制剂的有效性.
- DFT电子描述符与实验抑制效率数据保持一致.
- DOS转换表明硫胺在Fe (100) 表面的稳定.
结论:
- 硫胺类化合物是铁的有效微生物腐蚀抑制剂.
- DFT为这些抑制剂的吸附行为和抗腐蚀机制提供了宝贵的见解.
- 该研究验证了使用计算方法来预测和理解腐蚀抑制的有效性.
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