期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 104, 期 2, 页码 1110-1119出版社
WILEY
DOI: 10.1111/jace.17501
关键词
adsorption performance; aerogel; amino decoration; carbon doped BN
资金
- Program for Innovative Teams of Outstanding Young and Middle aged Researchers in the Higher Education Institutions of Hubei Province [T201602]
- Key Program of Natural Science Foundation of Hubei Province [2017CFA004]
- National Natural Science Foundation of China [51672194, 51872210]
- China Postdoctoral Science Foundation [2014M560631]
This study synthesized BCN aerogels with amino modification, achieving efficient adsorption of CO(2) and dyes with enhanced capacity. The synergistic effect of carbon doping and amino decoration improved the adsorption properties of the aerogels, accelerating the diffusion kinetics of dye and gas molecules.
Adsorption process is a cost-effective way to the dye removal and CO(2)capture. Improvements of the adsorption performance and conformance to the practical application conditions are necessary steps to approach practicality. Herein, hierarchical porous carbon-doped boron nitride (BCN) aerogels with amino modification were synthesized for the first time by freeze drying and carbothermal reduction method. As-prepared BCN aerogels exhibited superior adsorption performance for CO(2)and dyes. Compared with BN aerogel, notwithstanding the lower surface area, the as-prepared BCN aerogel exhibited 6-fold-enhanced CO(2)capture and higher dyes adsorption capacity, delivering a more than 150 times adsorption rate with methylene blue (MB) as the adsorbent. The reinforced adsorption properties were demonstrated to be primarily from the synergistic effect of carbon doping and amino decoration on the obviously improved adsorption energy, hydrophilicity and mesopore volume, accelerating the kinetics of dye and gas molecules diffusion. This work provides a new way on the design of high-efficiency absorbent materials.
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