标题: Strategically improving the intrinsic proton conductivity of UiO-66-NH2 by post-synthesis modification

作者: Feng, L (Feng, Lu); Lan, JR (Lan, Jirong); Chen, FY (Chen, Fangyuan); Hou, HB (Hou, Haobo); Zhou, H (Zhou, Hong)

来源出版物: DALTON TRANSACTIONS DOI: 10.1039/d1dt00400j 提前访问日期: MAR 2021

摘要: Metal-organic frameworks (MOFs), as a new class of proton conductors, have attracted much attention in the application of proton exchange membranes due to their precisely defined structure and tailorable functionality. However, for most of the MOF materials, their long-term stability is a huge barrier to practical application. Therefore, the structural stability of MOFs is an important prerequisite for the design and development of proton conductors with ultra-high conductivity. In this study, the stable UiO-66-NH2 is optimized as the precursor, and the modified material of DT-UiO-66 is designed and developed by introducing the 3,5-diamino-1,2,4-triazole molecule into the framework of UiO-66-NH2 through a post-synthesis strategy. Satisfactorily, DT-UiO-66 maintains the stability of the original skeleton. The alternating current impedance measurements indicate that a significantly improved proton conductivity of 4.47 x 10(-3) S cm(-1) is obtained at 100% relative humidity (RH) and 373 K for DT-UiO-66, which is attributed to the increasing number of proton sources and hopping sites. Moreover, DT-UIO-66 shows an outstanding stability under high temperature and high humidity conditions for at least 16 h, suggesting its potential application as a proton exchange membrane.

入藏号: WOS:000640251900001

PubMed ID: 33949516

语言: English

文献类型: Article; Early Access

地址: [Feng, Lu; Lan, Jirong; Chen, Fangyuan; Hou, Haobo] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.

[Feng, Lu; Hou, Haobo] Wuhan Univ, Zhaoqing GD HK & MO Environ Technol Res INST, Zhaoqing, Guangdong, Peoples R China.

[Zhou, Hong] Wuhan Inst Technol, Coll Chem & Environm Technol, Wuhan 430073, Hubei, Peoples R China.

通讯作者地址: Hou, HB (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.

Hou, HB (通讯作者)，Wuhan Univ, Zhaoqing GD HK & MO Environ Technol Res INST, Zhaoqing, Guangdong, Peoples R China.

Zhou, H (通讯作者)，Wuhan Inst Technol, Coll Chem & Environm Technol, Wuhan 430073, Hubei, Peoples R China.

影响因子：4.174