Abstract In this work, nanosized magnesium oxide decorated iron oxide nanorods (Fe2O3–MgO) were synthesized by simple one step hydrothermal method using magnesium nitrate, ferric nitrate and polyethylene glycol as starting materials. Here polyethylene glycol acts as a stabling agent. The obtained products were used as adsorbents for the elimination of toxic Congo red (CR) dye from water. TEM images showed the formation of spherical MgO nanoparticles on Fe2O3 nanorods surface. The crystal structure and surface area was described by XRD and BET analytical methods. CR adsorption mainly pH depended and maximum adsorption capacity occurred at pH 4 with adsorption capacity value 200 mg/g.

中文翻译：

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氧化镁纳米粒子装饰氧化铁纳米棒：从水性介质中合成、表征和修复刚果红染料

摘要 在这项工作中，以硝酸镁、硝酸铁和聚乙二醇为原料，通过简单的一步水热法合成了纳米氧化镁装饰的氧化铁纳米棒（Fe2O3-MgO）。这里聚乙二醇充当稳定剂。所得产物用作吸附剂以去除水中有毒的刚果红 (CR) 染料。TEM 图像显示在 Fe2O3 纳米棒表面形成了球形 MgO 纳米颗粒。通过XRD和BET分析方法描述了晶体结构和表面积。CR 吸附主要取决于 pH 值，最大吸附容量出现在 pH 4 时，吸附容量值为 200 mg/g。