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Jampaiah D, Shah D, Chalkidis A, Saini P, Babarao R, Arandiyan H, Bhargava SK. Bimetallic Copper-Cerium-Based Metal-Organic Frameworks for Selective Carbon Dioxide Capture. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9732-9740. [PMID: 38668749 DOI: 10.1021/acs.langmuir.4c00748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Metal-organic frameworks (MOFs) are highly regarded as valuable adsorbent materials in materials science, particularly in the field of CO2 capture. While numerous single-metal-based MOFs have demonstrated exceptional CO2 adsorption capabilities, recent advancements have explored the potential of bimetallic MOFs for enhanced performance. In this study, a CuCe-BTC MOF was synthesized through a straightforward hydrothermal method, and its improved properties, such as high surface area, smaller pore size, and larger pore volume, were compared with those of the bare Ce-BTC. The impact of the Cu/Ce ratio (1:4, 1:2, 1:1, and 3:2) was systematically investigated to understand how adding a second metal influences the CO2 adsorption performance of the Ce-BTC MOF. Various characterization techniques, including scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, thermogravimetric analysis, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and N2 BET surface area analysis, were employed to assess the physical and chemical properties of the bare Ce-BTC and CuCe-BTC samples. Notably, CuCe-BTC-1:2 exhibited superior surface area (133 m2 g-1), small pore size (3.3 nm), and large pore volume (0.14 cm3 g-1) compared to the monometallic Ce-BTC. Furthermore, CuCe-BTC-1:2 demonstrated a superior CO2 adsorption capacity (0.74 mmol g-1), long-term stability, and good CO2/N2 selectivity. This research provides valuable insights into the design of metal-BTC frameworks and elucidates how introducing a second metal enhances the properties of the monometallic Ce-BTC-MOF, leading to improved CO2 capture performance.
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Affiliation(s)
- Deshetti Jampaiah
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, VIC 3000, Australia
- Department of Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne ,VIC 3000, Australia
| | - Daksh Shah
- Department of Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne ,VIC 3000, Australia
| | - Anastasios Chalkidis
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, VIC 3000, Australia
| | - Pallavi Saini
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, VIC 3000, Australia
| | - Ravichandar Babarao
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, VIC 3000, Australia
- Department of Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne ,VIC 3000, Australia
| | - Hamidreza Arandiyan
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, VIC 3000, Australia
- Department of Applied Chemistry and Environmental Science, School of Science, RMIT University, Melbourne ,VIC 3000, Australia
| | - Suresh K Bhargava
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, VIC 3000, Australia
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Shi Q, Yan S, Wang C, Zeng C, Hu H, Chen M, Chen M, Zhang Q. Enhanced selective copper precipitation by mechanochemically activated benzene tricarboxylic acid. ENVIRONMENTAL TECHNOLOGY 2023; 44:1798-1807. [PMID: 34842054 DOI: 10.1080/09593330.2021.2012271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
Toward the treatment of waste solution containing heavy metals, direct precipitation of the metal ions from an acidic solution without alkaline neutralisation is still the greatest challenge. Based on the ligand properties of benzene tricarboxylic acid (BTC) to copper ions, a simple ball milling with 90 min at 400 rpm was used to activate BTC to enhance its capacity for copper removal from the pH of the original solution around 3-4. A set of analytical methods were used to characterise the activated BTC sample and BTC-Cu precipitate before and after copper precipitation. Compared with the raw BTC, the activated BTC could efficiently remove copper ions over 90% from an initial copper concentration of 100 mg/L in a shorter time from an acidic media with lower pH of around 2.60 and the maximum adsorption capacity can be stable at about 111.70 mg/g, resulting from probably the enhanced deprotonation effect for copper incorporation. Furthermore, at controlled dosage, the activated BTC demonstrated much high selectivity on precipitating copper ions from other heavy metals of Ni, Mn, Zn and Cd and provided a new approach for easy copper recycling from waste solution as secondary sources. This process may serve the purpose of recycling both metal and acidic solutions after the purification.
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Affiliation(s)
- Qing Shi
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Shanshan Yan
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Chao Wang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Chaocheng Zeng
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Huimin Hu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Mengfei Chen
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Min Chen
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
| | - Qiwu Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
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Determination of the surface thermodynamic characteristics and the structural isomer separation ability of new synthesized phenylbenzoate-based three-ring calamitic liquid crystals by inverse gas chromatography. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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