Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units
Bimetallic metal–organic frameworks (MOFs) based on heterometal-modified hexanuclear Zr building units have emerged as promising materials for applications in energy-related fields such as heterogenous catalysis/electrocatalysis. However, their stability remains a challenge under some practical cond...
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| Format: | Article |
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American Chemical Society (ACS)
2020
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| Online Access: | https://hdl.handle.net/1721.1/128195 |
| _version_ | 1826210575373303808 |
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| author | Yuan, Shuai Peng, Jiayu Zhang, Yirui Shao-Horn, Yang |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Yuan, Shuai Peng, Jiayu Zhang, Yirui Shao-Horn, Yang |
| author_sort | Yuan, Shuai |
| collection | MIT |
| description | Bimetallic metal–organic frameworks (MOFs) based on heterometal-modified hexanuclear Zr building units have emerged as promising materials for applications in energy-related fields such as heterogenous catalysis/electrocatalysis. However, their stability remains a challenge under some practical conditions, and the physical/chemical origin to the (in)stability is not well-understood. Herein, we selected three representative Zr-MOFs (MOF-808, NU-1000, and UiO-66) as platforms and incorporated different heterometals (Ti4+, V3+, V5+, Cr3+, Cr6+, Mn2+, Fe2+, Fe3+, Co2+, Ni2+, Cu2+, and Zn2+) to form a series of bimetallic M/Zr-MOFs. Their stability was examined in aqueous solutions of various pH to define their stability windows and understand their stability trend. The stability of M/Zr-MOFs was found to be dictated by the oxidation states of incorporated heterometals and slightly affected by the supporting Zr-MOFs. Water-exchange rate constant, defined as the rate constant by replacing a coordinated water with a solution water, was proposed as the stability descriptor to explain the stability trend and guide the design and application of future stable MOFs. |
| first_indexed | 2024-09-23T14:51:50Z |
| format | Article |
| id | mit-1721.1/128195 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:51:50Z |
| publishDate | 2020 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1281952022-09-29T11:05:33Z Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units Yuan, Shuai Peng, Jiayu Zhang, Yirui Shao-Horn, Yang Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Research Laboratory of Electronics Massachusetts Institute of Technology. Department of Chemical Engineering Bimetallic metal–organic frameworks (MOFs) based on heterometal-modified hexanuclear Zr building units have emerged as promising materials for applications in energy-related fields such as heterogenous catalysis/electrocatalysis. However, their stability remains a challenge under some practical conditions, and the physical/chemical origin to the (in)stability is not well-understood. Herein, we selected three representative Zr-MOFs (MOF-808, NU-1000, and UiO-66) as platforms and incorporated different heterometals (Ti4+, V3+, V5+, Cr3+, Cr6+, Mn2+, Fe2+, Fe3+, Co2+, Ni2+, Cu2+, and Zn2+) to form a series of bimetallic M/Zr-MOFs. Their stability was examined in aqueous solutions of various pH to define their stability windows and understand their stability trend. The stability of M/Zr-MOFs was found to be dictated by the oxidation states of incorporated heterometals and slightly affected by the supporting Zr-MOFs. Water-exchange rate constant, defined as the rate constant by replacing a coordinated water with a solution water, was proposed as the stability descriptor to explain the stability trend and guide the design and application of future stable MOFs. 2020-10-23T20:23:52Z 2020-10-23T20:23:52Z 2019-10 2019-10 Article http://purl.org/eprint/type/JournalArticle 1932-7447 1932-7455 https://hdl.handle.net/1721.1/128195 Yuan, Shuai et al. "Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units." Journal of Physical Chemistry C 123, 46 (October 2019): 28266–28274 © 2019 American Chemical Society http://dx.doi.org/10.1021/acs.jpcc.9b08749 Journal of Physical Chemistry C Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Prof. Shao-Horn |
| spellingShingle | Yuan, Shuai Peng, Jiayu Zhang, Yirui Shao-Horn, Yang Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units |
| title | Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units |
| title_full | Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units |
| title_fullStr | Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units |
| title_full_unstemmed | Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units |
| title_short | Stability Trend of Metal–Organic Frameworks with Heterometal-Modified Hexanuclear Zr Building Units |
| title_sort | stability trend of metal organic frameworks with heterometal modified hexanuclear zr building units |
| url | https://hdl.handle.net/1721.1/128195 |
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