Journal
NANOTECHNOLOGY
Volume 30, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aaf75b
Keywords
metal-organic framework; N-doped nanoporous carbon; formaldehyde; adsorption
Funding
- National Natural Science Foundation of China [51501186, 51601191, 51571189]
- National Key Research and Development Program of China [2017YFA0207101]
- Anhui Provincial Natural Science Foundation [1508085JGD07]
- Cross-disciplinary Collaborative Teams Program in CAS
- CAS/SAFEA International Partnership Program for Creative Research Teams
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Indoor formaldehyde (HCHO) removal is very important to reduce public health risk. Herein, we report a facile method for preparing N-doped nanoporous carbon through direct carbonization of metal-organic frameworks (ZIF-8) to remove harmful formaldehyde. The prepared N-doped nanoporous carbon exhibited uniform morphology and large specific surface area. Moreover, the type of N-functional groups on the N-doped nanoporous carbon had a dominant effect on its HCHO adsorption activity. As a result, HCHO adsorption capacity of the optimized N-doped nanoporous carbon was approximately five times higher than that of the commercially activated carbon. The detailed HCHO adsorption process, including physical adsorption and chemical adsorption, was also confirmed through in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). In addition, it should be noted that the N-doped nanoporous carbon exhibited high stability for HCHO adsorption, even after six adsorption cycles, indicating its good recyclability for long-term application. This study is expected to pave a way for expanding the environmental applications of the N-doped nanoporous carbon.
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