One-step synthesized 3D-structured MOF foam for efficient and convenient catalytic reduction of nitrogen-containing aromatic compoundsopen access
- Authors
- Lin, Jia-Yin; Chen, Pen-Yuan; Kwon, Eilhann; Oh, Wen Da; You, Siming; Huang, Chao-Wei; Ghanbari, Farshid; Wi-Afedzi, Thomas; Lin, Kun-Yi Andrew
- Issue Date
- Apr-2021
- Publisher
- ELSEVIER
- Keywords
- HKUST-1; Cu foam; MOFs; 4-Nitrophenol; Reduction; Methylene blue
- Citation
- JOURNAL OF WATER PROCESS ENGINEERING, v.40
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF WATER PROCESS ENGINEERING
- Volume
- 40
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190184
- DOI
- 10.1016/j.jwpe.2021.101933
- Abstract
- Metal Organic Frameworks (MOFs) receive increasing attention for 4-nitrophenol (4-NP) reduction; however the existing studies of using MOFs for 4-NP reduction all involve with noble metals. Moreover, the reported MOFs are very fine powders which are inconvenient for realistic implementation. Thus, the present study proposes to develop a MOF foam which exhibits macroscale features of foam and microscale functionalities of MOFs. Specifically, a Cu foam is selected as the macroporous substrate which serves as a porous support and the metal source for synthesizing Cu-based MOF, HKUST-1, via an one-step electrochemical method. The resulting HKUST-1 foam can act as a convenient catalyst for reduction of 4-NP to 4-AP in either batch-type or flow-thru-type reactions. The corresponding activation energy (E-a) of 4-NP reduction (43.3 kJ/mol) is also significantly lower than E-a values of reported catalysts, including noble metal catalysts, whereas the corresponding TOF (48.3 min(-1)) is higher than many other catalysts. HKUST-1 foam can also efficiently catalyze reduction of methylene blue (MB) to fully decolorize its color. In addition, HKUST-1 foam could be reused over multi-cycles and retain its activity for reduction of 4-NP and MB. These features validate that HKUST-1 foam is a practical, convenient, and reusable catalyst for reduction of 4-NP.
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