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Cited by 486

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Effective Adsorption and Enhanced Removal of Organophosphorus Pesticides from Aqueous Solution by Zr-Based MOFs of UiO-67

Zhu, Xiangyang, Li, Bing, Yang, Jian, Li, Yongsheng, Zhao, Wenru, Shi, Jianlin, Gu, Jinlou·2015·ACS Applied Materials & Interfaces

Abstract

Though many efforts have been devoted to the adsorptive removal of hazardous materials of organophosphorus pesticides (OPs), it is still highly desirable to develop novel adsorbents with high adsorption capacities. In the current work, the removal of two representative OPs, glyphosate (GP) and glufosinate (GF), was investigated by the exceptionally stable Zr-based MOFs of UiO-67. The abundant Zr-OH groups, resulting from the missing-linker induced terminal hydroxyl groups and the inherent bridging ones in Zr-O clusters of UiO-67 particles, served as natural anchorages for efficient GP and GF capture in relation with their high affinity toward phosphoric groups in OPs. The correlation between the most significant parameters such as contact time, OPs concentration, adsorbent dose, pH, as well as ionic strength with the adsorption capacities was optimized, and the effects of these parameters on the removal efficiency of GP and GF from the polluted aqueous solution were investigated. The adsorption of GP on UiO-67 was faster than that of GF, and a pseudo-second-order rate equation effectively described the uptake kinetics. The Langmuir model exhibited a better fit to adsorption isotherm than the Freundlich model. Thanks to the strong affinity and adequate pore size, the adsorption capacities in UiO-67 approached as high as 3.18 mmol (537 mg) g(-1) for GP and 1.98 mmol (360 mg) g(-1) for GF, which were much higher than those of many other reported adsorbents. The excellent adsorption characteristics of the current adsorbents toward OPs were preserved in a wide pH window and high concentration of the background electrolytes. These prefigured the promising potentials of UiO-67 as novel adsorbent for the efficient removal of OPs from aqueous solution.

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Metadata

Authors
Zhu, X., Li, B., Yang, J., Li, Y., Zhao, W., Shi, J., & Gu, J.
Venue
ACS Applied Materials & Interfaces
Published
2014-12-24
Volume
7
Issue
1
Pages
223-231
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W2333357553
Cited by
486
References
53
FWCI
15.86
Type
journal article
Language
en
Open access
closed

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