In the current study, γ-AlOOH, γ-MnOOH, and α-Mn₂O₃ nanorods (NRs) were easily synthesized and applied as advanced antibacterial materials. γ-AlOOH NRs with 20 nm width, [100] crystal plane, and 200 nm length were fabricated through a surfactant-directed solvothermal method. γ-MnOOH NRs with 20 nm width, [101] crystal direction and 500 nm length were fabricated through a hydrothermal method. The prepared γ-MnOOH NRs were calcinated (for 5 h) at 700 °C to produce α-Mn₂O₃ NRs with 20 nm average width and increased surface area. The NRs’ structures were confirmed through FT-IR, XRD, XPS, FESEM, and FETEM. The antibacterial activity of the NRs was studied against different Gram-negative and Gram-positive bacterial strains and yeast. The three NRs exhibited antibacterial activity against all of the used strains. Biological studies indicated that the NRs’ antimicrobial activity increased in the order of γ-MnOOH < γ-AlOOH < α-Mn₂O₃ NRs. The α-Mn₂O₃ NRs exhibited the lowest MIC value (39 μg mL⁻¹) against B. subtilis, B. pertussis, and P. aeruginosa. The prepared NRs exhibited a higher antimicrobial potential toward Gram-positive bacteria than Gram-negative bacteria. The higher antimicrobial activity of the α-Mn₂O₃ NRs is highlighted based on their larger surface area and smaller diameter. Consequently, uniform NR architectures, single crystallinity, small nanoscale diameters, and more highly exposed [110] Mn-polar surfaces outwards are promising structures for α-Mn₂O₃ antibacterial agents. These NRs adhered firmly to the bacterial cells causing cell wrapping and morphology disruption, and microbial death. The designed NRs provide a great platform for microbial growth inhibition.

中文翻译：

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γ-AlOOH，γ-MnOOH和α-Mn2O3纳米棒作为高级抗菌活性剂的设计。

在目前的研究中，γ-AlOOH上，γ-MnOOH的，和α-Mn系₂ ö ₃纳米棒（NRS）的容易合成和先进的抗菌材料施加。通过表面活性剂定向溶剂热法制备了具有20 nm宽度，[100]晶面和200 nm长度的γ-AlOOHNR。通过水热法制备了具有20 nm宽度，[101]晶体方向和500 nm长度的γ-MnOOHNR。将所制备的γ-MnOOH的自然保护区被煅烧（5小时）中于700℃，以产生α-Mn系₂ ö ₃NR的平均宽度为20 nm，表面积增加。通过FT-IR，XRD，XPS，FESEM和FETEM确认了NR的结构。研究了NRs对不同革兰氏阴性和革兰氏阳性细菌菌株和酵母菌的抗菌活性。这三个NR对所有使用的菌株均表现出抗菌活性。生物学研究表明，自然保护区抗微生物活性在γ-MnOOH的<γ-AlOOH的<α-Mn的顺序增加₂ ö ₃卢比。α-的Mn _2个ö ₃ NRs的表现出最低的MIC值（39微克毫升^-1反对）的枯草芽孢杆菌，百日咳博德特氏菌和铜绿假单胞菌。制备的NRs对革兰氏阳性菌的抗菌潜力高于革兰氏阴性菌。α-Mn的较高的抗微生物活性_2个ö ₃ NRs的是基于它们的较大的表面积和较小直径的突出显示。因此，均匀的NR架构，单结晶度，小的纳米级的直径，而对于α-Mn系更高度暴露[110]的Mn极性表面向外是有前途的结构₂ ö ₃的抗菌剂。这些NR牢固地粘附在细菌细胞上，引起细胞包裹和形态破坏，以及微生物死亡。设计的NRs为抑制微生物的生长提供了一个很好的平台。