Preparation of water-dispersed monolayer LDH nanosheets by SMA intercalation to hinder the restacking upon redispersion in water

Qingqing Qin; Yingmo Hu; Junya Wang; Yuanyuan Yang; Ting Lei; Zhenyu Cui; Sufang Guo; Shuhao Qin

doi:10.1039/d3na00087g

Preparation of water-dispersed monolayer LDH nanosheets by SMA intercalation to hinder the restacking upon redispersion in water

Nanoscale Adv. 2023 May 5;5(11):2873-2878. doi: 10.1039/d3na00087g. eCollection 2023 May 30.

Authors

Qingqing Qin^{1

2}, Yingmo Hu¹, Junya Wang³, Yuanyuan Yang², Ting Lei², Zhenyu Cui⁴, Sufang Guo¹, Shuhao Qin²

Affiliations

¹ Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Material Sciences and Technology, China University of Geosciences Beijing 100083 China huyingmo@cugb.edu.cn.
² Guizhou Material Industry Technology Research Institute Guiyang 550025 China pec.shqin@gzu.edu.cn.
³ Faculty of Environmental Science and Engineering, Kunming University of Science and Technology Kunming 650500 China.
⁴ School of Materials Science and Engineering, Tiangong University Tianjin 300387 PR China.

Abstract

We present a novel method for preparing water-dispersed monolayer layered double hydroxide (LDH) nanosheets (m-LDH). By intercalating styrene-maleic anhydride copolymer (SMA) into LDH, we obtained m-LDH through a simple aging step that produced stable, translucent colloidal solutions. After drying, the resulting powder can be redispersed in water to recover the m-LDH monolayer structure. To our knowledge, this is the first report of immediate recovery of the m-LDH monolayer structure from dried powder after redispersion in water. Our method may have significant implications for preparing and utilizing m-LDH nanosheets in various applications.