Department of Chemistry, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh.
J Hazard Mater. 2009 Dec 30;172(2-3):1229-35. doi: 10.1016/j.jhazmat.2009.07.129. Epub 2009 Aug 5.
Mn(3)O(4) nanoparticles with diameter ca. 10nm were synthesized by the forced hydrolysis of Mn(II) acetate at 80 degrees C. The X-ray diffraction (XRD), Fourier transform infra red (FT-IR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques were employed to study structural features and chemical composition of the nanoparticles. The unique oxidative activity of the Mn(3)O(4) nanoparticles was demonstrated in the polymerization and dye degradation reactions. On adding Mn(3)O(4) suspension to an acidic solution of aniline, yielded immediately green sediment of polyaniline (PANI). The organic dyes, viz., methylene blue (MB) and procion red (PR) were found to be completely decolorized from their aqueous solution on treating the dyes with Mn(3)O(4) suspension in acidic media. The Mn(3)O(4) nanoparticles also showed a clear antibacterial activity against the Vibrio cholerae, Shigella sp., Salmonella sp., and Escherichia coli bacteria that cause cholera, dysentery, typhoid, and diarrhea diseases, respectively.
通过在 80°C 下强制水解 Mn(II)醋酸盐合成了直径约为 10nm 的 Mn(3)O(4)纳米粒子。采用 X 射线衍射（XRD）、傅里叶变换红外（FT-IR）光谱、扫描电子显微镜（SEM）和能谱（EDX）技术研究了纳米粒子的结构特征和化学成分。Mn(3)O(4)纳米粒子在聚合和染料降解反应中表现出独特的氧化活性。在向苯胺的酸性溶液中加入 Mn(3)O(4)悬浮液后，立即生成聚苯胺（PANI）的绿色沉淀物。在酸性介质中用 Mn(3)O(4)悬浮液处理有机染料亚甲基蓝（MB）和普瑞文红（PR），发现它们完全从水溶液中脱色。Mn(3)O(4)纳米粒子对引起霍乱、痢疾、伤寒和腹泻的霍乱弧菌、志贺氏菌、沙门氏菌和大肠杆菌也表现出明显的抗菌活性。
