黄铁矿面依赖的微生物氧化和界面相互作用机制：晶体面变化与不同模式的生物膜附着的一个例子

IF 5.6 2区医学 Q1 BIOPHYSICS

Colloids and Surfaces B: Biointerfaces Pub Date : 2025-08-20 DOI:10.1016/j.colsurfb.2025.115063

Dandan Yang , Jinye Liang , Quanliu Yang , Chenzi Huang , Chunyao Gu , Shengjie Sun , Hongbo Zhao , Min Gan , Ke Zhang , Jianyu Zhu , Guanzhou Qiu

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引用次数: 0

摘要

黄铁矿的不同晶面具有各向异性，影响铁的生物地球化学循环。然而，黄铁矿与微生物在不同暴露晶体表面的界面相互作用的潜在机制尚不清楚。因此，本研究探讨了黄铁矿{100}和{210}面与嗜热氧化亚硫酸杆菌YN22的相互作用对黄铁矿溶解的影响。结果表明：{210}刻面形成较大的珠串腐蚀坑，生物氧化率比{100}高出约20 %；这是由于具有4配位铁原子的{210}晶片具有较高的反应活性和电子传递能力，促进了其表面生物膜的更广泛和更密集的分布，从而加速了{210}晶片的氧化溶解和更大腐蚀坑的形成。{100}刻面生物膜分布更分散，表面容易形成较多的钾黄钾铁矾，阻碍了{100}刻面氧化。本研究揭示了黄铁矿{100}和{210}不同晶面的表面性质对生物腐蚀的影响，为研究黄铁矿在不同晶面的微生物氧化过程提供了新的视角。

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Pyrite facet-dependent microbial oxidation and interfacial interaction mechanisms: An example of crystal facets variability with different modes of biofilm attachment

Different crystal facets of pyrite are anisotropic, which affects the biogeochemical cycling of iron. However, the potential mechanisms of interfacial interactions between pyrite and microorganisms on different exposed crystal surfaces are unclear. Therefore, this study investigates the effect of the interaction of pyrite {100} and {210} facets with Sulfobacillus thermophilidoxidans YN22 on the dissolution of pyrite. The results showed that the {210} facets formed larger pearl-string corrosion pits and the biological oxidation rate was about 20 % higher than that of the {100} facets. This was attributed to the higher reactivity of the {210} facets with 4-coordinated iron atoms and electron transfer capacity, which promoted a wider and denser distribution of biofilms on their surfaces, thus accelerating the oxidative dissolution of the {210} facets and the formation of larger corrosion pits. In addition, the {100} facets showed a more dispersed biofilm distribution and their surfaces were prone to form more K-jarosite, which hindered the oxidation of the {100} facets. This study revealed that the surface properties of different crystal facets {100} and {210} of pyrite affect biocorrosion, providing a new perspective on the oxidation process of pyrite with microorganisms at different crystal facets.

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来源期刊

Colloids and Surfaces B: Biointerfaces 生物-材料科学：生物材料

CiteScore

11.10

自引率

3.40%

发文量

730

审稿时长

42 days

期刊介绍： Colloids and Surfaces B: Biointerfaces is an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin, having particular relevance to the medical, pharmaceutical, biotechnological, food and cosmetic fields. Submissions that: (1) deal solely with biological phenomena and do not describe the physico-chemical or colloid-chemical background and/or mechanism of the phenomena, and (2) deal solely with colloid/interfacial phenomena and do not have appropriate biological content or relevance, are outside the scope of the journal and will not be considered for publication. The journal publishes regular research papers, reviews, short communications and invited perspective articles, called BioInterface Perspectives. The BioInterface Perspective provide researchers the opportunity to review their own work, as well as provide insight into the work of others that inspired and influenced the author. Regular articles should have a maximum total length of 6,000 words. In addition, a (combined) maximum of 8 normal-sized figures and/or tables is allowed (so for instance 3 tables and 5 figures). For multiple-panel figures each set of two panels equates to one figure. Short communications should not exceed half of the above. It is required to give on the article cover page a short statistical summary of the article listing the total number of words and tables/figures.