TY - JOUR
T1 - Green synthesis of ultrapure La(OH)3 nanoparticles by one-step method through spark ablation and electrospinning and its application to phosphate removal
AU - Li, Shiyang
AU - Huang, Xiangfeng
AU - Wan, Zhengyu
AU - Liu, Jia
AU - Lu, Lijun
AU - Peng, Kaiming
AU - Schmidt-Ott, Andreas
AU - Bhattarai, Rabin
PY - 2020
Y1 - 2020
N2 - La(OH)3 metal engineered nanoparticles (MENPs) are efficient phosphate binders; however, complex synthesis procedures and purity as well as agglomeration issues impede their development and practical applications. Herein, a green and a one-step method in combination with the spark ablation aerosol technology and electrospinning is proposed for the synthesis of La(OH)3 MENPs; further, their application as phosphate binders are elucidated as a proof the concept. Material characterization results confirm the successful synthesis of ultrapure La(OH)3 MENPs, which has not been achieved before via an environmentally friendly one-step procedure. Small angle X-ray scattering and X-ray photoelectron spectroscopy etching results show that La(OH)3 MENPs loading on the electrospun nanofibers are uniform in both two and three dimensions. The comparative tests revealed a high phosphate adsorption capacity (110.8 mg P/g La) and indicted that the La(OH)3 MENPs perform well; this was observed even under the interference of coexisting ions (Cl−, SO4 2−, NO3 −, and F−) at different pH values. After three cycles of solution-shaking treatment, the release of La(OH)3 was less than 1 wt% (0.5 wt%), which was acceptable for an adsorbent. These results indicate that the La(OH)3 MENP-loaded nanofibers are practical phosphate binders due to the simple production methods, low manufacturing cost, and impressive capacity. The proposed method significantly shortens the loading process and is a promising alternative for not only the synthesis of the adsorbent, but also for other engineering materials where loading is needed.
AB - La(OH)3 metal engineered nanoparticles (MENPs) are efficient phosphate binders; however, complex synthesis procedures and purity as well as agglomeration issues impede their development and practical applications. Herein, a green and a one-step method in combination with the spark ablation aerosol technology and electrospinning is proposed for the synthesis of La(OH)3 MENPs; further, their application as phosphate binders are elucidated as a proof the concept. Material characterization results confirm the successful synthesis of ultrapure La(OH)3 MENPs, which has not been achieved before via an environmentally friendly one-step procedure. Small angle X-ray scattering and X-ray photoelectron spectroscopy etching results show that La(OH)3 MENPs loading on the electrospun nanofibers are uniform in both two and three dimensions. The comparative tests revealed a high phosphate adsorption capacity (110.8 mg P/g La) and indicted that the La(OH)3 MENPs perform well; this was observed even under the interference of coexisting ions (Cl−, SO4 2−, NO3 −, and F−) at different pH values. After three cycles of solution-shaking treatment, the release of La(OH)3 was less than 1 wt% (0.5 wt%), which was acceptable for an adsorbent. These results indicate that the La(OH)3 MENP-loaded nanofibers are practical phosphate binders due to the simple production methods, low manufacturing cost, and impressive capacity. The proposed method significantly shortens the loading process and is a promising alternative for not only the synthesis of the adsorbent, but also for other engineering materials where loading is needed.
KW - Controllable particle sizes
KW - Eutrophication
KW - Gas-phase coalescence
KW - Industrialization potential
KW - La(OH) nanoparticles
KW - Phosphorus removal
UR - http://www.scopus.com/inward/record.url?scp=85079239846&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2020.124373
DO - 10.1016/j.cej.2020.124373
M3 - Article
AN - SCOPUS:85079239846
SN - 1385-8947
VL - 388
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 124373
ER -