Refractory & Ceramic Materials Division (RCMD), Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, Cairo, 11421, Egypt.
Faculty of Science, Chemistry Department, Helwan University, Cairo, 11795, Egypt.
Environ Sci Pollut Res Int. 2022 Dec;29(56):84357-84365. doi: 10.1007/s11356-022-21694-w. Epub 2022 Jul 2.
For the tendency toward cleaner production and safe conversion of undesired toxic wastes to highly priced advanced products, this work introduces new ceramics/glass composites of CrO/FeO/lead silicate glass (LSG) from industrial LSG wastes. Both chromia CrO and hematite FeO ceramics are added equally to the LSG wastes with different percentages (10, 20, and 30 wt.%) via the pressureless sintering method. The competitiveness of this work is dependent on the conversion of undesired waste materials into advanced/smart optical materials with a low cost and an environmentally friendly method. Hence, the influence of both CrO and FeO additions on the behavior and the different characteristics of the lead silicate wastes are comprehensively investigated. Evaluation of the final ceramics/glass composites was achieved through their phase composition, microstructure, optical, and magnetic characteristics. The results verified that the insertion of both chromia and hematite together into the glass waste had a key role in improving its morphological properties and optical and magnetic behaviors. Composite with 30% of CrO/FeO gave the highest optical absorbance of 90%, the lowest and best band gap energy of 1.68 ev, and the highest refractive index of 2.85. Also, it recorded the best magnetic behavior with the highest saturation magnetization of 139.700 × 10A m kg and the best coercivity of 190.0 Oe. These findings confirmed the successful clean conversion of the hazardous lead silicate waste into advanced products with promising optoelectronic characteristics.
为了实现清洁生产的趋势和将有害的有毒废物安全转化为高价值的先进产品，本工作从工业 LSG 废物中引入了新型的 CrO/FeO/铅硅酸盐玻璃（LSG）陶瓷/玻璃复合材料。通过无压烧结法，等量地将氧化铬 CrO 和赤铁矿 FeO 陶瓷添加到 LSG 废物中，添加比例分别为 10、20 和 30wt.%。本工作的竞争力取决于将有害废物转化为具有低成本和环境友好方法的先进/智能光学材料的能力。因此，全面研究了 CrO 和 FeO 的添加对铅硅酸盐废物的行为和不同特性的影响。通过对最终陶瓷/玻璃复合材料的相组成、微观结构、光学和磁性特性进行评估。结果表明，同时将氧化铬和赤铁矿插入玻璃废物中对改善其形态性能以及光学和磁性行为起着关键作用。添加 30% CrO/FeO 的复合材料具有最高的光学吸收率 90%、最低和最佳的带隙能量 1.68eV 以及最高的折射率 2.85。此外，它还具有最佳的磁性，饱和磁化强度为 139.700×10A m kg，矫顽力为 190.0Oe。这些发现证实了成功地将危险的铅硅酸盐废物清洁转化为具有有前途的光电特性的先进产品。
