中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A sustainable approach to fabricate new 1D and 2D nanomaterials from natural abundant palygorskite clay for antibacterial and adsorption

文献类型:期刊论文

作者Dong WK (董文凯)2,3; Lu YS (卢予沈)2,3; Wang WB (王文波)2,3; Zhang Mingming1; Jing Yanmei1; Wang AQ (王爱勤)2,3
刊名Chemical Engineering Journal
出版日期2020-02-15
卷号382期号:页码:122984
关键词Palygorskite Silicate Nanotube LDH Adsorption Antibacterial
DOI10.1016/j.cej.2019.122984
英文摘要

It is always highly desirable to synthesize functional nanomaterials using cheap, naturally abundant clay deposits as starting materials, but the major challenge is lack of new way to utilize all of components in clay deposits and minimize the generation of waste. In order to resolve the problem, we proposed a “split” and “reconstruct” strategy to tailor palygorskite (Pal) clay deposits, and used each component to synthesizing three new nanomaterials with different morphologies and functions: copper silicate nanotube (CuSiO3), silica nanotube@Cu nanoparticles (SiO2-NT@Cu), and Mg-Al-Fe layered double hydroxide (LDH). The Pal clay deposits were first subjected to an acid bleaching process to obtain silica nanorods and solution rich in Mg(II), Al(II), Fe(III) ions. The silica as a Si source may react with Cu(II) to form CuSiO3 nanotube, which was allowed to be in-situ reduced in vapor or liquid phase to produce coral-like SiO2-NT@Cu nanocomposite with well-distributed Cu nanoparticles (CuNPs). The solution rich in Mg(II), Al(II), Fe(III) was used to synthesize Mg-Al-Fe LDH nanosheets by a simple co-precipitation process. It was confirmed that the tubular SiO2-NT@Cu nanocomposite can inhibit effectively the growth of E. coli and S. aureus, with the minimal inhibitory concentration (MIC) of 2.0 mg/mL and 0.6 mg/mL, respectively. The 2D nanolayered LDH compounds can capture efficiently and selectively anionic dye Congo Red (CR) with a maximum adsorption capacity of 254.14 ± 7.72 mg/g, due to an ion exchange and electrostatic attraction mechanism. This work provides a universal, cost-efficient and sustainable way to utilize all of components in low-grade natural clay deposits to synthesize useful nanomaterials with special functions, and also opens a new avenue for high-value utilization of abundant clay deposits.

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语种英语
源URL[http://ir.licp.cn/handle/362003/26269]  
专题兰州化学物理研究所_甘肃省黏土矿物应用重点实验室
通讯作者Wang WB (王文波); Wang AQ (王爱勤)
作者单位1.Department of Clinical Laboratory Center, The Second Hospital of Lanzhou University, Lanzhou 730000, PR China
2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
3.Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
推荐引用方式
GB/T 7714
Dong WK ,Lu YS ,Wang WB ,et al. A sustainable approach to fabricate new 1D and 2D nanomaterials from natural abundant palygorskite clay for antibacterial and adsorption[J]. Chemical Engineering Journal,2020,382(无):122984.
APA Dong WK ,Lu YS ,Wang WB ,Zhang Mingming,Jing Yanmei,&Wang AQ .(2020).A sustainable approach to fabricate new 1D and 2D nanomaterials from natural abundant palygorskite clay for antibacterial and adsorption.Chemical Engineering Journal,382(无),122984.
MLA Dong WK ,et al."A sustainable approach to fabricate new 1D and 2D nanomaterials from natural abundant palygorskite clay for antibacterial and adsorption".Chemical Engineering Journal 382.无(2020):122984.

入库方式: OAI收割

来源:兰州化学物理研究所

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