Enhanced boron adsorption onto synthesized MgO nanosheets by ultrasonic method

Ping Li; Chuang Liu; Li Zhang; Shili Zheng; Yi Zhang

doi:10.1016/j.ultsonch.2016.07.029

Enhanced boron adsorption onto synthesized MgO nanosheets by ultrasonic method

Ultrason Sonochem. 2017 Jan:34:938-946. doi: 10.1016/j.ultsonch.2016.07.029. Epub 2016 Aug 3.

Authors

Ping Li¹, Chuang Liu², Li Zhang³, Shili Zheng⁴, Yi Zhang¹

Affiliations

¹ National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
² National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Division of Rare Metal Materials & Metallurgy, General Research Institute for Non-Ferrous Metals, Beijing 100008, China.
³ Division of Rare Metal Materials & Metallurgy, General Research Institute for Non-Ferrous Metals, Beijing 100008, China.
⁴ National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: lipinggnipil@ipe.ac.cn.

PMID: 27773324
DOI: 10.1016/j.ultsonch.2016.07.029

Abstract

MgO nanosheets with high adsorption performance were fabricated by an ultrasonic method. It was revealed that, nest-like MgO was formed from the magnesium salt solution precipitation and further calcination. Then the nest-like MgO was exfoliated by ultrasonic waves to obtain MgO nanosheets with approximately a lateral of 200-600nm and a thickness of 10nm. Adjusting the ultrasonic time and power, the specific surface areas of MgO nanosheets could be tuned in a range of 79-168m²/g. The synthesized MgO nanosheets were used as adsorbents to remove boron from aqueous solution, and the maximum boron adsorption capacity of these MgO nanosheets reached 87mgg^-1. The high uptake capability of the MgO nanosheets makes it potentially adsorbent for the removal of boron from wastewaters.

Keywords: Adsorption mechanism; Boron adsorption; Magnesium oxide nanosheets; Ultrasonication.

Publication types

Research Support, Non-U.S. Gov't