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1. Co-based MOF as an efficient catalyst by peroxymonosulfate activation for degradation of tetracycline: synthesis and performance.

Author

Zhang, Shu-Ran, Qin, Shao-Dan, Xu, Guang-Juan, Xie, Wei, Xu, Na, Jiang, Nan, Xu, Yan-Hong, Hu, Xiao-Li, and Su, Zhong-Min

Subjects
TETRACYCLINE, PEROXYMONOSULFATE, TETRACYCLINES, CATALYSTS, CATALYTIC activity
Abstract

In this work, a novel cobalt-based MOF (JLNU-11) was prepared using Co(NO3)2·6H2O, 1,3,5-tris(4-carboxyphenyl)benzene (BTB), and 1,4-bis((1H-imidazol-1-yl)methyl)benzene (BIMB) through a solvothermal method, and its catalytic activation of peroxymonosulfate (PMS) for the degradation of tetracycline was studied. Due to the unique tri-nuclear cobalt cluster and double interpenetrating structure of JLNU-11, the adsorption effect of the catalyst can be eliminated, and the degradation of TC is entirely dependent on PMS activation. The results showed that in the JLNU-11/PMS system, the removal rate of tetracycline (TC) could reach over 90% within 30 minutes, proving that JLNU-11 had good catalytic activity. In addition, the effects of experimental parameters such as the amount of JLNU-11, PMS concentration, TC concentration, temperature, pH, and inorganic anions on TC degradation were investigated. Free radical quenching experiments confirmed the presence of active oxygen species during the degradation process, and a possible catalytic activation mechanism was speculated. The universality of the JLNU-11/PMS system for dye degradation was also explored. [ABSTRACT FROM AUTHOR]

Published
2024
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11. A water-stable terbium metal–organic framework with functionalized ligands for the detection of Fe3+ and Cr2O72− ions in water and picric acid in seawater.

Author

Yu, Hai-Huan, Chi, Jia-Qi, Su, Zhong-Min, Li, Xiao, Sun, Jing, Zhou, Chen, Hu, Xiao-Li, and Liu, Qun

Subjects
PICRIC acid, METAL-organic frameworks, TERBIUM, ARTIFICIAL seawater, SEAWATER, LIGANDS (Chemistry)
Abstract

The existence of Cr2O72− anions and excessive Fe3+ cations in water and picric acid in seawater causes irreversible harm to human health and aquatic organisms. Herein, a water-stable terbium metal–organic framework (namely Tb-MOF-A) was fabricated from 1,10-phenanthroline (phen) and 2,3,5,6-tetrafluoroterephthalic acid (H2tftba) under hydrothermal conditions. Due to the features of the pyridine- and fluorine-functionalized organic ligands and Tb3+ ions, Tb-MOF-A can quickly, quantitatively and circularly detect Cr2O72− anions and Fe3+ cations in a water environment and picric acid in a simulated seawater environment. In addition, the stability studies exhibit excellent water stability and fluorescent stability for 21 days, thermal stability and fluorescent stability in water (−18 °C to 50 °C), and acid-basic solution stability and fluorescent stability (pH = 2–11) for 4 days. Novel Tb-MOF-A is expected to be applied in practical water environment engineering as an excellent sensor with high water-stability, sensitivity, and reusability. [ABSTRACT FROM AUTHOR]

Published
2020
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13. Self-assembly and Li-ion storage performance of three new Nb/W mixed-addendum polyoxometalates based on the {SiNb3W9O40} clusters and transition-metal cations.

Author

Wu, Hai-Yang, Huang, Min, Qin, Chao, Wang, Xin-Long, Hu, Hai, Huang, Peng, and Su, Zhong-Min

Subjects
CESIUM ions, TRANSITION metals, POLYOXOMETALATES
Abstract

Three unprecedented Nb/W mixed-addendum polyoxometalates, Cs9K9[(Si4W36Nb12O156)Mn(H2O)2]·41H2O, Cs11K4Na3[(Si4W36Nb12O156)Co(H2O)2]·29H2O, and Cs14K4[(Si4W36Nb12O156)Ni(H2O)2]·41H2O, involving [SiNb3W9O40]7− as the fundamental building unit have been synthesized to be utilized as anode materials for lithium ion batteries (LIBs). [ABSTRACT FROM AUTHOR]

Published
2019
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16. Steam-assisted assemblies of {Ni6PW9}-based inorganic–organic hybrid chains: synthesis, crystal structures and properties.

Author

Yin, Ying-Xue, Chen, Wei-Chao, Yao, Wei, Qin, Chao, and Su, Zhong-Min

Subjects
X-ray diffraction, ELECTROCHEMICAL analysis, INTERLEUKIN-6
Abstract

Three hexa-Ni-substituted Keggin phosphotungstate chains, namely, [Ni(en)2]{[Ni6(μ3-OH)3(H2O)2(en)3(B-α-PW9O34)](H2N-bdc)}·8H2O (1), H2{[Ni6(μ3-OH)3(H2O)2(en)3(B-α-PW9O34)](tda)}·7H2O (2), and NaH2[Ni(en)2(H2O)2]{[Ni6(μ3-OH)3(H2O)(en)3(B-α-PW9O34)(PW12O40)](1,4-bdc)}·7H2O (3) (H2N-bdc = 5-aminoisophthalic acid; tda = 2,5-thiophenedicarboxylic acid; 1,4-bdc = dicarboxybenzene; en = ethylenediamine), have been obtained in a steam-assisted conversion manner for the first time. They were fully characterized by elemental analysis, thermogravimetric analysis, IR spectroscopy, diffuse reflectance spectroscopy, and powder X-ray diffraction. Single-crystal X-ray structure analyses indicate that {Ni6PW9} secondary building units bridged by different dicarboxylic ligands through the Ni-carboxylate interaction give rise to the formations of chains 1–3, where the H2N-bdc bridged ligand as well as the unprecedented {(Ni6PW9)PW12} species are reported for the first time in the Ni6-substituted polyoxometalates family. Additionally, their thermal stabilities, magnetic and electrochemical properties were also investigated in detail. [ABSTRACT FROM AUTHOR]

Published
2018
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32. Trimeric hexa-dimethyltin-functionalized selenotungstate [{Sn(CH3)2(CH3COO)}3{Sn(CH3)2}3{Se2W18O62(OH)(H2O)}3]18−

Author

Chen, Wei-Chao, Qin, Chao, Wang, Xin-Long, Wu, Cai-Xia, Li, Yang-Guang, Zang, Hong-Ying, Shao, Kui-Zhan, Su, Zhong-Min, and Wang, En-Bo

Subjects
ORGANOSELENIUM compounds, PHOTOCATALYSIS, ETHANES, HYDROGEN evolution reactions, DERIVATIZATION, POLYOXOMETALATES
Abstract

The trimeric organic–inorganic hybrid selenotungstate(iv) [{Sn(CH3)2(CH3COO)}3{Sn(CH3)2}3{Se2W18O62(OH)(H2O)}3]18− is composed of three Wells–Dawson-type {α-Se2W18} fragments and six {(CH3)2Sn2+} groups involving the first reported carboxyl-modified dimethyltin moieties, exhibiting photocatalytic H2 evolution activity. [ABSTRACT FROM AUTHOR]

Published
2016
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