Exfoliated Ni-Al LDH 2D nanosheets for intermediate temperature CO2 capture
- Authors
- Hanif, Aamir; Sun, Mingzhe; Shang, Shanshan; Tian, Yuanmeng; Yip, Alex C. K.; Ok, Yong Sik; Yu, Iris K. M.; Tsang, Daniel C. W.; Gu, Qinfen; Shan, Jin
- Issue Date
- 15-7월-2019
- Publisher
- ELSEVIER
- Keywords
- Ni-Al LDH; Exfoliation; Nanosheets; CO2 capture
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.374, pp.365 - 371
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HAZARDOUS MATERIALS
- Volume
- 374
- Start Page
- 365
- End Page
- 371
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/64106
- DOI
- 10.1016/j.jhazmat.2019.04.049
- ISSN
- 0304-3894
- Abstract
- CO2 capture is projected as one of the pragmatic approaches to deal with the global warming phenomenon. Adsorption-based CO2 capture is considered an economically attractive option to reduce CO2 emission. The success of the adsorption-based capture primarily relies on adsorbents and thus a variety of adsorbents have been investigated in the literature. We here report a high surface area (210.2 m 2 /g) exfoliated Ni-Al LDH nanoplatelet as a promising candidate for CO2 capture at an intermediate temperature of 200 degrees C applicable to integrated gasification combined cycle (IGCC) and sorption enhanced water gas shift (SEWGS) reactions. The materials were well characterized by PXRD, TGA, FTIR, TEM, ICP-OES, and N-2 adsorption surface area, and pore size distribution techniques. A unique nanoflower morphology comprising of exfoliated LDH platelets of ca. S layer thiclmess was obtained. The CO2 capture capacity (0.66 mmol/g) of the exfoliated Ni-Al LDH nanoplatelet is comparable to that of the widely reported Mg-Al LDH-derived mixed oxides and MgO-based adsorbents. Provided that Ni-Al and other transition metal LDH materials are known to exhibit superior catalytic properties for CO2 methanation, this work could pave the way for development of dual-functional materials for CO2 capture and conversion.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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