pH-依赖于从合成溶液和计算机主板液中选择性提取黄金 (iii) 使用混合纳米复合材料
Rabeea D Abdel-Rahim1, Mahmoud Thabet1, Ahmed R Abdellah1
1Department of Chemistry, Faculty of Science, Al-Azhar University Assiut 71524 Egypt h.gomaa@azhar.edu.eg.
RSC advances
|July 18, 2024
概括
这项研究介绍了一种新的纳米复合材料,用于有效地从电子废物中回收黄金. CoNi2S4@g-C3N4材料显示出高选择性和金矿开采能力,提供了一个可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 电子废物回收利用带来了环境和可持续发展的挑战.
- 现有的黄金回收方法往往是昂贵和低效的.
- 同时存在的金属使得从电子垃圾中提取黄金变得复杂.
研究的目的:
- 开发一种选择性吸附剂,用于从电子废物中回收黄金.
- 为了合成和表征一种用于金矿开采的混合性半孔纳米复合材料.
- 为了评估工业应用中纳米复合材料的性能.
主要方法:
- 一种混合的半孔纳米复合材料的合成:类似于血小板的CoNi2S4与g-C3N4纳米片 (CoNi2S4@g-C3N4) 相结合.
- 物理化学,纹理,结构,形态和元素性质的全面表征.
- 对Au (iii) 离子的吸附能力,选择性,动力学和可重复使用性的评估.
主要成果:
- CoNi2S4@g-C3N4纳米复合材料表现出一个特殊的吸附能力为200.6毫克g-1的Au(iii) 离子.
- 在pH 2下实现了高选择性,在60分钟内迅速平衡.
- 吸附剂在10个循环中显示出令人满意的可重复使用性,并遵循Langmuir和伪二阶模型.
结论:
- 开发的CoNi2S4@g-C3N4纳米复合材料是从电子废物中选择性提取黄金的有希望的吸附剂.
- 这种材料提供了一个可行的解决方案,用于可持续和成本效益高的黄金回收.
- 这项研究为这种新型吸附剂在工业范围内应用铺平了道路.
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