Academic Journal
Uniform cobalt nanoparticles embedded in hexagonal mesoporous nanoplates as a magnetically separable, recyclable adsorbent
| العنوان: | Uniform cobalt nanoparticles embedded in hexagonal mesoporous nanoplates as a magnetically separable, recyclable adsorbent |
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| المؤلفون: | Can Zhao, Yuexiao Song, Tianyu Xiang, Wenxiu Qu, Shuo Lou, Xiaohong Yin, Feng Xin |
| المصدر: | Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 1770-1781 (2018) |
| بيانات النشر: | Beilstein-Institut, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Technology LCC:Chemical technology LCC:Science LCC:Physics |
| مصطلحات موضوعية: | absorbent regeneration, CoAl layered double hydroxide, efficient adsorbent, hexagonal nanoplates, magnetic nanoparticles, polydopamine, Technology, Chemical technology, TP1-1185, Science, Physics, QC1-999 |
| الوصف: | Novel hexagonal nanoplates (NPLs) comprised of mesoporous carbon containing imbedded magnetic Co nanoparticles (CoAl2O4 phase) are prepared through direct carbonization of polydopamine (PDA)-coated CoAl layered double hydroxide (LDH). A uniform PDA coating initially covers the surface of LDH by dopamine self-polymerization under mild conditions. Well-dispersed Co nanoparticles are formed in the NPLs by the partial reduction of cobalt from Co2+ to Co0 with surface carbon during the heat treatment process. The surface morphology and specific surface area of the as-prepared NPLs can be tailored by adjusting the initial dopamine concentration and carbonization temperature. The mesoporous NPLs exhibit excellent sorption of rhodamine B (RhB) dye and fast magnetic separation in aqueous solution. Over 95% of RhB can be adsorbed within 2 min and the adsorption reaches equilibrium after about 30 min. The maximum adsorption capacity approaches 172.41 mg/g. After regeneration, this adsorbent can be recycled easily by magnetic separation and still possess good adsorption capacity for RhB removal, even after five cycles. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2190-4286 |
| Relation: | https://doaj.org/toc/2190-4286 |
| DOI: | 10.3762/bjnano.9.168 |
| URL الوصول: | https://doaj.org/article/813200e77ae54f87aeb43f7134cdecbd |
| رقم الانضمام: | edsdoj.813200e77ae54f87aeb43f7134cdecbd |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21904286 |
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| DOI: | 10.3762/bjnano.9.168 |