Functionalized g-C3N4 sheets assisted synthesis of growth-oriented MIL-88B-Fe with rod-like structure: Upgrading framework photo-catalytic performance and stability

被引：69
作者：
Liao, Xiaoyuan [1 ]
Wang, Fan [1 ]
Wang, Yibei [2 ]
Wei, Wenjie [1 ]
Xiao, Zaozao [1 ]
Liu, Haitang [1 ,3 ]
Hao, Qinglan [1 ,4 ]
Lu, Shuxiang [1 ,4 ]
Li, Zhen [1 ,4 ]
机构：
[1] Tianjin Univ Sci & Technol, Coll Chem Engn & Mat Sci, Tianjin 300457, Peoples R China
[2] SINOPEC Catalyst Co Ltd, Beijing 102500, Peoples R China
[3] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China
[4] Tianjin Key Lab Brine Chem Engn & Resource Ecouti, Tianjin, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2020年 / 503卷
基金：
中国国家自然科学基金;
关键词：
Benzoic acid functionalized g-C3N4; Persulfate; Growth-oriented; MIL-88B-Fe; Covalent bond links; METAL-ORGANIC FRAMEWORKS; GRAPHITIC CARBON NITRIDE; ENHANCED PHOTOCATALYTIC ACTIVITY; EFFICIENT DEGRADATION; OXIDATION; REDUCTION; MIL-53(FE); COMPOSITE; CR(VI); PEROXYMONOSULFATE;
D O I：
10.1016/j.apsusc.2019.144089
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, it is first time reported that benzoic acid functionalized g-C3N4 (BF-g-C3N4) sheets assisted synthesis of (0 0 1) surface-oriented MIL-88B-Fe with rod-like structure (BF-CM-rod). Pristine g-C3N4 sheets leaded to produce (1 0 1) surface-oriented MIL-88B-Fe with diamond-like structure (CM-diamond). BF-CM-rod composite catalyst achieves covalent bond links between g-C3N4 and MIL-88B-Fe, performs better separation of h(+)-e(-) pairs, and leads to excellent photo-catalytic performance for pollutant removal under visible light irradiation, with persulfate (PS) as oxidant. Its photo-activity is almost 4.2, 2.0 and 1.3 times of g-C3N4, MIL-88B-Fe and CM-diamond, respectively. A possible mechanism is proposed to explain the improved photo-catalytic performance of the Vis/BF-CM-rod/PS system. This work provides a novel way to prepare shape controlled Fe-based metal-organic frameworks formed by covalent bonds.
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页数：10
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