标题：Stabilizing the titanium-based metal organic frameworks in water by metal cations with empty or partially-filled d orbitals
作者：An, Yang; Liu, Yuanyuan; Wang, Zeyan; Wang, Peng; Zheng, Zhaoke; Dai, Ying; Qin, Xiaoyan; Zhang, Xiaoyang; Whangbo, Myung-Hwan; Huan 更多 作者机构：[An, Yang; Liu, Yuanyuan; Wang, Zeyan; Wang, Peng; Zheng, Zhaoke; Qin, Xiaoyan; Zhang, Xiaoyang; Whangbo, Myung-Hwan; Huang, Baibiao] Shandong Univ, S 更多
通讯作者：Liu, Yuanyuan;Liu, YY;Huang, BB
通讯作者地址：[Liu, YY; Huang, BB]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
来源：JOURNAL OF COLLOID AND INTERFACE SCIENCE
关键词：Ti-based MOFs; Enhancing the stability in water; Metal cations with; empty or partially-filled; d orbitals
摘要：Though titanium-based metal-organic frameworks (MOFs) are declared to be relatively water stable, their framework gradually collapses in water within days due to the attack of OH- to O-Ti-O bond. For practical applications of titanium-based MOFs, it is crucial to solve their instability problem in water. We searched for a simple and efficient method to enhance the stability of titanium-based MOFs in water by using Ti-ATA (ATA = 2-aminoterephthallate ion) as a representative titanium-based MOF. Here, we show that the stability of Ti-ATA in water is greatly improved nearly without affecting its porosity and photocatalytic activity by treating it with aqueous solutions containing metal ions of empty d orbitals (Y3(+), La3+, Ce3+, Nd3+ and Tm3+) or partially-filled d orbitals (Cr3(+)). (C) 2018 Published by Elsevier Inc.