Journal
DIAMOND AND RELATED MATERIALS
Volume 126, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2022.109123
Keywords
Carbon materials; Adsorption; In situ self-doped; Organic dyes
Categories
Funding
- National Natural Science Foundation of China [21101141]
- Science and Technology Guiding Project of China Textile Industry Federation [2020011]
- Outstanding Young Talent Research Fund of Zhengzhou University [1521320002]
- Key Scientific Research Project of Colleges and Universities in Henan Province [21A540006]
- Foundation of Henan General Science and Technology Project [212102210206]
- Research Team Project of Zhongyuan University of Technology [K2019TD002]
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Porous carbon microspheres with high specific surface area and in-situ self-doped heteroatoms were fabricated using a one-step direct pyrolysis method. These microspheres showed excellent dye adsorption capacity and have great potential for practical applications.
Porous carbon microspheres (NPO-PCSs) with a high specific surface area (1769 m(2) g(-1)) and in situ self-doped multiple heteroatoms (N, P, and O) were skillfully fabricated via one-step direct pyrolysis of cross-linked poly (cyclotriphosphazene-co-phloroglucinol) microspheres. The doping carbon structure of NPO-PCSs with intrinsic microporosity promises the potential for the adsorption of cationic and anionic dyes (Methyl Blue and Methyl Orange). Moreover, there is a pi-pi interaction between the ordered graphite units of NPO-PCSs and the aromatic rings of dye molecules, which promotes the dye adsorption capacity of NPO-PCSs. Meanwhile, these in situ self-doped heteroatoms (N, P, and O) can play as Lewis base and the formed Lewis acid-base interaction improves the adsorption performance of the NPO-PCSs. Additionally, for the large containing oxygen groups of the NPO-PCSs adsorbent, there could be the electrostatic attraction between the NPO-PCSs adsorbent and the dye molecules. As results, the absorptivity of the NPO-PCSs for MB and MO could reach 356 and 281 mg g(-1) at 25 degrees C and pH = 7, respectively. Thus, the high-performance NPO-PCSs versatile adsorbent might have a great potential for practical application in wastewater purification.
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