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Hybridization with Ti3C2Tx MXene: An Effective Approach to Boost the Hydrothermal Stability and Catalytic Performance of Metal–Organic Frameworks
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-01-11 , DOI: 10.1021/acs.inorgchem.0c02589
Chen Gu 1 , Cong Lu 1 , Yu-Xia Gao 1 , Peng Tan 1 , Song-Song Peng 1 , Xiao-Qin Liu 1 , Lin-Bing Sun 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-01-11 , DOI: 10.1021/acs.inorgchem.0c02589
Chen Gu 1 , Cong Lu 1 , Yu-Xia Gao 1 , Peng Tan 1 , Song-Song Peng 1 , Xiao-Qin Liu 1 , Lin-Bing Sun 1
Affiliation
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Metal–organic frameworks (MOFs) have attracted increasing research enthusiasm owing to their tunable functionality, diverse structure characteristics, and large surface area. However, poor hydrothermal stability restricts the utilization of some MOFs in practical applications. Our work aims at improving the hydrothermal stability of a representative MOF, namely, HKUST-1, by incorporating a two-dimensional material Ti3C2Tx MXene for the first time. A new type of hybrid material is synthesized through the hybridization of HKUST-1 and Ti3C2Tx, and the obtained hybrids show improved hydrothermal stability as well as catalytic performance. The porosity of hybrids is enhanced when incorporating an appropriate amount of Ti3C2Tx, and the surface area can reach 1380 m2·g–1, while the pristine HKUST-1 is 1210 m2·g–1. After the hydrothermal treatment (hot water vapor, 70 °C), the structure of hybrid materials maintains well, while the framework of HKUST-1 is severely destroyed. When catalyzing the ring-opening reaction of styrene oxide, the conversion reaches 76.7% only for 20 min, which is much higher than that of pure HKUST-1 (23.1% for 20 min). More importantly, the catalytic activity could recover without loss even after six cycles. Our hybrid materials are promising in practical catalytic applications due to their excellent hydrothermal stability, catalytic activity, and reusability.
中文翻译:
与Ti 3 C 2 T x MXene的杂化:提高金属有机骨架的水热稳定性和催化性能的有效方法
金属有机框架(MOF)由于具有可调功能,多种结构特征和较大的表面积而吸引了越来越多的研究热情。但是,水热稳定性差会限制某些MOF在实际应用中的使用。我们的工作旨在通过首次引入二维材料Ti 3 C 2 T x MXene来提高具有代表性的MOF HKUST-1的水热稳定性。通过HKUST-1与Ti 3 C 2 T x的杂交合成了一种新型的杂化材料。,并且得到的杂化物显示出改善的水热稳定性以及催化性能。当掺入适量的Ti 3 C 2 T x时,杂化物的孔隙率增加,表面积可达到1380 m 2 ·g –1,原始的HKUST-1为1210 m 2 ·g –1。经过水热处理(热水蒸气,70°C)后,杂化材料的结构保持良好,而HKUST-1的骨架被严重破坏。当催化氧化苯乙烯的开环反应时,转化率仅在20分钟内达到76.7%,远高于纯HKUST-1(20分钟为23.1%)。更重要的是,即使经过六个循环,催化活性也可以恢复而不会损失。我们的混合材料具有出色的水热稳定性,催化活性和可重复使用性,因此在实际的催化应用中很有希望。
更新日期:2021-02-01
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
与Ti 3 C 2 T x MXene的杂化:提高金属有机骨架的水热稳定性和催化性能的有效方法
金属有机框架(MOF)由于具有可调功能,多种结构特征和较大的表面积而吸引了越来越多的研究热情。但是,水热稳定性差会限制某些MOF在实际应用中的使用。我们的工作旨在通过首次引入二维材料Ti 3 C 2 T x MXene来提高具有代表性的MOF HKUST-1的水热稳定性。通过HKUST-1与Ti 3 C 2 T x的杂交合成了一种新型的杂化材料。,并且得到的杂化物显示出改善的水热稳定性以及催化性能。当掺入适量的Ti 3 C 2 T x时,杂化物的孔隙率增加,表面积可达到1380 m 2 ·g –1,原始的HKUST-1为1210 m 2 ·g –1。经过水热处理(热水蒸气,70°C)后,杂化材料的结构保持良好,而HKUST-1的骨架被严重破坏。当催化氧化苯乙烯的开环反应时,转化率仅在20分钟内达到76.7%,远高于纯HKUST-1(20分钟为23.1%)。更重要的是,即使经过六个循环,催化活性也可以恢复而不会损失。我们的混合材料具有出色的水热稳定性,催化活性和可重复使用性,因此在实际的催化应用中很有希望。