Fabrication of metal-organic frameworks@cellulose aerogels composite materials for removal of heavy metal ions in water

Chao Lei; Junkuo Gao; Wenjing Ren; Yuanbo Xie; Somia Yassin Hussain Abdalkarim; Shunli Wang; Qingqing Ni; Juming Yao

doi:10.1016/j.carbpol.2018.10.029

Fabrication of metal-organic frameworks@cellulose aerogels composite materials for removal of heavy metal ions in water

Carbohydr Polym. 2019 Feb 1:205:35-41. doi: 10.1016/j.carbpol.2018.10.029. Epub 2018 Oct 11.

Authors

Chao Lei¹, Junkuo Gao², Wenjing Ren¹, Yuanbo Xie¹, Somia Yassin Hussain Abdalkarim¹, Shunli Wang³, Qingqing Ni⁴, Juming Yao⁵

Affiliations

¹ Institute of Fiber based New Energy Materials, The Key laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
² Institute of Fiber based New Energy Materials, The Key laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, PR China. Electronic address: jkgao@zstu.edu.cn.
³ Department of Physics, Center for Optoelectronic Materials and Devices, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
⁴ Department of Mechanical Engineering & Robotics, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8576, Japan.
⁵ Institute of Fiber based New Energy Materials, The Key laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou 310018, PR China. Electronic address: yaoj@zstu.edu.cn.

PMID: 30446114
DOI: 10.1016/j.carbpol.2018.10.029

Abstract

In the present work, we develop novel method of loading metal-organic frameworks (UiO-66 and UiO-66-NH₂) on the flexible cellulose aerogels as metal-organic frameworks@cellulose aerogels composite materials by using in situ growth procedure at room temperature. The as prepared metal-organic frameworks@cellulose aerogels composite materials were well characterized via SEM, XRD, atomic absorption spectrometer, and TG analysis, besides the adsorption of Pb²⁺ and Cu²⁺ in metal-organic frameworks@cellulose aerogels composite materials was investigated. The amount of metal ions adsorbed by metal-organic frameworks@cellulose aerogels composite materials is equal to the sum of metal-organic frameworks and cellulose aerogels, indicating that the metal-organic frameworks are not blocked after cellulose aerogels growth and still have adsorption properties. It was found that metal-organic frameworks@cellulose aerogels composite materials can be recycled to adsorb Pb²⁺ and Cu²⁺ in water after simple cleaning. The equilibrium adsorption capacity of Pb²⁺ adsorbed by UiO-66-NH₂@CA was 89.40 mg g^-1, and can be easily reused for more than 5 cycles without significant decrease in performance. Moreover, the maximum decomposition temperature (T_max) of UiO-66-NH₂@CA was increased by 62.1℃. This result suggested that such metal-organic frameworks@cellulose aerogels composite materials could adsorb heavy metal ions in water could by avoiding secondary pollution and show great potential in water treatment.

Keywords: Cellulose aerogels; Heavy metal ion adsorption; In situ growth; Loading; UiO-66.