期刊
INORGANIC CHEMISTRY
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.2c02052
关键词
-
资金
- National Natural Science Foundation of China [42077291]
- National Special Support for High-Level Personnel
- Open Funds of the Beijing Synchrotron Radiation Fac i l i t y [2019-BEPC- PT-002485]
This research proposes a processing strategy to synthesize magnesium oxide and hydroxide nanoparticles from natural magnesium-rich chrysotile. The resulting hybrid nanostructure exhibited excellent phosphate uptake capacity and regeneration performance, as well as wide applicability in the presence of competitive anions and various pH conditions. The study also demonstrated the high-performance phosphate removal capability of the adsorbent from sewage effluent.
Magnesium oxide and hydroxide nanomaterials comprise a class of promising advanced functional metal nanomaterials whose use in environmental and material applications is increasing. Several strategies to synthesize these nanomaterials have been described but are unsustainable and uneconomic. This work reports on a processing strategy that turns natural magnesium-rich chrysotile into magnesium oxide and hydroxide nanoparticles via nanoparticle hybridization and an alkaline process while enabling La-based nanoparticles to coat the chrysotile nanotube surfaces. The adsorbent's resulting hybrid nanostructure had an outstanding capacity for phosphate uptake (135.2 mg P g(-1)) and enhanced regeneration performance. Furthermore, the adsorbent featured wide applicability with respect to the coexistence of competitive anions and a broad range of pH conditions, and its high-performance phosphate removal from sewage effluent was also demonstrated. Spectroscopic and microscopic analyses revealed the scavenging ability of phosphate by the La-based and Mg-based nanoparticles and the multiple capture mechanisms involved, including surface complexation and ion exchange. This proposed approach expands chrysotile's potential use as a magnesium-rich nanomaterial and harbors great promise for the removal of pollutants in a variety of real-world settings.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据