共查询到20条相似文献,搜索用时 10 毫秒
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Dr. Xinxiong Li Hongyan Xu Fanzhen Kong Prof. Dr. Ruihu Wang 《Angewandte Chemie (International ed. in English)》2013,52(51):13769-13773
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Daopeng Sheng Lin Zhu Xing Dai Chao Xu Peng Li Carolyn I. Pearce Chengliang Xiao Jing Chen Ruhong Zhou Tao Duan Omar K. Farha Zhifang Chai Shuao Wang 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(15):5022-5026
99Tc contamination at legacy nuclear sites is a serious and unsolved environmental issue. The selective remediation of 99TcO4? in the presence of a large excess of NO3? and SO42? from natural waste systems represents a significant scientific and technical challenge, since anions with a higher charge density are often preferentially sorbed by traditional anion‐exchange materials. We present a solution to this challenge based on a stable cationic metal‐organic framework, SCU‐102 (Ni2(tipm)3(NO3)4), which exhibits fast sorption kinetics, a large capacity (291 mg g?1), a high distribution coefficient, and, most importantly, a record‐high TcO4? uptake selectivity. This material can almost quantitatively remove TcO4? in the presence of a large excess of NO3? and SO42?. Decontamination experiments confirm that SCU‐102 represents the optimal Tc scavenger with the highest reported clean‐up efficiency, while first‐principle simulations reveal that the origin of the selectivity is the recognition of TcO4? by the hydrophobic pockets of the structure. 相似文献
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Ping Peng Fang‐Fang Li Venkata S. Pavan K. Neti Alejandro J. Metta‐Magana Luis Echegoyen 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2014,126(1):164-167
Given the unique structural and electronic properties of C60, metal–organic frameworks (MOFs) containing C60 linkers are expected to exhibit interesting characteristics. A new hexakisfullerene derivative possessing two pairs of phenyl pyridine groups attached to two methano‐carbon atoms located at the trans‐1 positions was designed and synthesized. The four pyridyl nitrogen atoms define a perfectly planar rectangle. This new C60 derivative was used to assemble the first fullerene‐linked two‐dimensional MOF by coordination with Cd2+. 相似文献
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Negative Thermal Expansion in the Metal–Organic Framework Material Cu3(1,3,5‐benzenetricarboxylate)2
Yue Wu Atsushi Kobayashi GregoryJ. Halder VanessaK. Peterson KarenaW. Chapman Nina Lock PeterD. Southon CameronJ. Kepert 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2008,120(46):9061-9064
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Sibo Wang Wangshu Yao Jinliang Lin Zhengxin Ding Xinchen Wang 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2014,126(4):1052-1056
Metal–organic frameworks (MOFs) have shown great promise for CO2 capture and storage. However, the operation of chemical redox functions of framework substances and organic CO2‐trapping entities which are spatially linked together to catalyze CO2 conversion has had much less attention. Reported herein is a cobalt‐containing zeolitic imidazolate framework (Co‐ZIF‐9) which serves as a robust MOF cocatalyst to reduce CO2 by cooperating with a ruthenium‐based photosensitizer. The catalytic turnover number of Co‐ZIF‐9 was about 450 within 2.5 hours under mild reaction conditions, while still keeping its original reactivity during prolonged operation. 相似文献