Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 12, Pages 4966-4974Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c00934
Keywords
Histidine-rich protein; High-performance; Separation; MOF-mediated cascade derivation; Layered double hydroxide
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Funding
- National Science Foundation of China [21675127, 31901794]
- National Postdoctoral Program for Innovative Talents [BX20180263]
- Shaanxi Provincial Science Fund for Distinguished Young Scholars [2018JC-011]
- Development Project of Qinghai Provincial Key Laboratory [2017-ZJ-Y10]
- Capacity Building Project of Engineering Research Center of Qinghai Province [2017-GX-G03]
- General Program of Provincial Natural Science Foundation of Qinghai [2019-ZJ-904]
- Young Talent Fund of University Association for Science and Technology in Shaanxi, China [2019-02-03]
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Selective enrichment and purification of histidine (His)-rich protein from complex mixtures is vital to satisfy the requirements of proteomic and diagnostic applications, but it still remain a challenge. Herein, a high-performance layered double hydroxide (LDH)-based adsorbent is designed and prepared, via a metal-organic framework (MOF)-mediated in situ cascade derivation strategy, for enhanced His-rich protein separation. Importantly, the pseudomorphic conversion of Fe3O4 nanoparticle-derived magnetic MIL-100(Fe) MOF, with unique structural features, enables the finally derived LDH with plenty of Ni2+ ions exposed for His-rich protein binding. As such, the as-prepared Fe3O4@NiFe LDH exhibits favorable selectivity for His-rich protein adsorption with bovine hemoglobin (BHb) as a model and with a relatively high binding capacity of 3287.67 mg g(-1) in a rapid equilibrium time of 20 min, which is superior to those reported magnetic adsorbents. Also, the high performance of Fe3O4@NiFe LDH can be facilely regenerated and applied to separate BHb from a bovine blood sample, highlighting its good practicality. Therefore, this MOF-mediated cascade derivation strategy is a promising way to design advanced layered double hydroxide magnetic adsorbents for high-performance bioseparation.
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