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首页> 外文期刊>RSC Advances >Sol-gel auto-combustion synthesis of PbFe12O19 using maltose as a novel reductant
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Sol-gel auto-combustion synthesis of PbFe12O19 using maltose as a novel reductant

机译：以麦芽糖为新型还原剂的溶胶-凝胶自燃烧合成PbFe12O19

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摘要

A new way of preparing lead hexaferrite (PbFe12O19) nanoplates and nanoparticles has been developed using the sol-gel auto-combustion route, without adding external surfactant. For the first time, maltose has been applied as reductant to form PbFe12O19. In this work, we have chosen lead nitrate and iron nitrate as starting reagents. The morphology, phase structure, composition and phase purity of PbFe12O19 can be controlled by adjusting the Pb/Fe and Pb : reductant ratios and also calcination temperature. When the molar ratio of Pb/Fe is 1 : 6 and calcination temperature is 900 degrees C, the product is pure and found to be PbFe12O19 nanoplates. The size and agglomeration of the nanoplates increase with decreasing maltose content. On decreasing the calcination temperature to 600 degrees C, nanoparticles with spherical morphology are obtained. The PbFe12O19 nanostructures are characterized using SEM, TEM, EDS and XRD. Products with a high coercive force of 5609 Oe are obtained when the Pb/maltose and Pb/Fe ratios are 1 : 26 and 1 : 6, respectively, and calcination temperature is 900 degrees C.
机译：使用溶胶-凝胶自燃路线，无需添加外部表面活性剂，已开发出一种制备六方铁酸铅（PbFe12O19）纳米板和纳米颗粒的新方法。首次将麦芽糖用作还原剂以形成PbFe12O19。在这项工作中，我们选择了硝酸铅和硝酸铁作为起始试剂。可以通过调节Pb / Fe和Pb：还原剂的比例以及煅烧温度来控制PbFe12O19的形态，相结构，组成和相纯度。当Pb / Fe的摩尔比为1：6并且煅烧温度为900℃时，产物是纯的，并且发现是PbFe12O19纳米板。纳米板的大小和团聚随着麦芽糖含量的减少而增加。在将煅烧温度降低至600℃时，获得具有球形形态的纳米颗粒。使用SEM，TEM，EDS和XRD对PbFe12O19纳米结构进行表征。当铅/麦芽糖比和铅/铁比分别为1:26和1：6且煅烧温度为900摄氏度时，可获得具有5609 Oe高矫顽力的产品。

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