Facile synthesis of Cu-BTC@biochar with controlled morphology for effective toluene adsorption at medium-high temperature

被引：73

作者：

Zhang, Junjie ^{[1
]}

Shao, Jingai ^{[1
,2
,3
]}

Zhang, Xiong ^{[1
,3
]}

Rao, Gang ^{[1
]}

Li, Guangyang ^{[1
]}

Yang, Haiping ^{[1
]}

Zhang, Shihong ^{[1
]}

Chen, Hanping ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Dept New Energy Sci & Engn, Wuhan 430074, Peoples R China

[3] 1037 Luoyu Rd, Wuhan, Hubei, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2023年 / 452卷

基金：

中国国家自然科学基金;

关键词：

Toluene adsorption; Composite material; Cu-BTC; Biochar; Molecular simulation; METAL-ORGANIC FRAMEWORKS; COMPOSITES; STABILITY; HKUST-1; VOCS; COMBUSTION; OXIDATION; KINETICS; REMOVAL; OXIDES;

D O I：

10.1016/j.cej.2022.139003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The development of adsorbents suitable for volatile organic compounds (VOCs) adsorption at medium-high temperature is urgently required for the control of VOCs in coal-fired power plant flue gas. In this study, a size -controlled broccoli-like Cu-BTC-loaded biochar composite (Cu-BTC@biochar) was synthesized with a facile one -pot method. Cu-BTC@biochar showed hierarchical pore structure features and significantly improved BET sur-face area (728.5 m2/g) compared with raw biochar (10.0 m2/g). The results of fixed-bed adsorption experiments show that Cu-BTC@biochar has outstanding toluene (typical components of VOCs) adsorption performance at the medium-high temperatures of 60 degrees C and 150 degrees C, the adsorption capacities can reach 501.8 and 88.8 mg/g, respectively. Molecular simulations were used to reveal the toluene adsorption mechanism and the results show that the van der Waals interaction plays an important role in the toluene adsorption process, but the electrostatic interaction of Cu-BTC@biochar has a significantly higher proportion than that of Cu-BTC (31 % vs 7 %), which is more pronounced when the temperature increases. Our findings demonstrate that this low-cost Metal-organic frameworks (MOFs) composite material presents great potential as the adsorbent for VOCs at medium-high temperature.

引用

页数：13