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Ternary metal oxide embedded carbon derived from metal organic frameworks for adsorption of methylene blue and acid red 73

Yu, Menglin and Dong, Heng and Zheng, Yingdie and Liu, Weiping (2021) Ternary metal oxide embedded carbon derived from metal organic frameworks for adsorption of methylene blue and acid red 73. Chemosphere, 280 . Art. No. 130567. ISSN 0045-6535. doi:10.1016/j.chemosphere.2021.130567. https://resolver.caltech.edu/CaltechAUTHORS:20210505-084840290

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Abstract

Organic dyes can enter water bodies through industrial wastes and may pose a threat to the health of aquatic organisms and human. Metal organic framework derived carbon materials (CMOFs) have shown excellent performance for aqueous dye adsorption. However, few have studied multimetallic CMOFs for dye removal. Herein, a ternary metal oxide embedded carbon derived from amino-modified metal organic framework (CMOF(Fe/Al/Ni 8/7/5)-NH₂) has been developed as an efficient adsorbent to remove aqueous methylene blue (MB) and acid red 73 (AR-73). CMOF(Fe/Al/Ni 8/7/5)-NH2 reached adsorption equilibrium for both MB and AR-73 within 30 min at neutral pH condition. It also achieved 18 and 24 times higher adsorption than commercial activated carbon (AC) in 10 min for MB and AR-73, respectively. Compared to other CMOFs-NH₂, CMOF(Fe/Al/Ni 8/7/5)-NH₂ had the highest adsorption capacity for both cationic MB and anionic AR-73. In addition, CMOF(Fe/Al/Ni 8/7/5)-NH₂ had < 0.15% metal leaching in 90 min in the pH range of 4–10, and it also maintained 89% and 95% adsorption capacity for MB and AR-73 in five consecutive adsorption batches, respectively. Electrostatic interaction was identified as the primary interaction between CMOFs-NH₂ and the dyes, and the embedded crystalline metal oxides with different points of zero charge (PZCs) were identified to be the key adsorption sites. A uniformly distributed surface charge model was proposed to explain the exceptional adsorption capacity of CMOF(Fe/Al/Ni 8/7/5)-NH₂. With fast kinetics, high adsorption capacity, wide applicability and good stability, CMOF(Fe/Al/Ni 8/7/5)-NH₂ may be an effective adsorbent for many other ionic organic pollutants.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.chemosphere.2021.130567DOIArticle
ORCID:
AuthorORCID
Dong, Heng0000-0002-4168-7297
Liu, Weiping0000-0002-1173-892X
Additional Information:© 2021 Published by Elsevier Ltd. Received 4 December 2020, Revised 5 April 2021, Accepted 10 April 2021, Available online 28 April 2021. This work was supported by National Natural Science Foundations of China (Grant No. 21777137). The authors would also like to thank China Scholarship Council for the support.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China21777137
China Scholarship CouncilUNSPECIFIED
Subject Keywords:Cationic dye; Anionic dye; Fast adsorption; Carbon-based adsorbents; Metal organic frameworks; Ternary metal oxides
DOI:10.1016/j.chemosphere.2021.130567
Record Number:CaltechAUTHORS:20210505-084840290
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210505-084840290
Official Citation:Menglin Yu, Heng Dong, Yingdie Zheng, Weiping Liu, Ternary metal oxide embedded carbon derived from metal organic frameworks for adsorption of methylene blue and acid red 73, Chemosphere, Volume 280, 2021, 130567, ISSN 0045-6535, https://doi.org/10.1016/j.chemosphere.2021.130567. (https://www.sciencedirect.com/science/article/pii/S0045653521010389)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108975
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:05 May 2021 17:23
Last Modified:05 May 2021 17:23

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