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Molecules 2019, 24(5), 957;

Preparation of Poly (Allylthiourea-Co-Acrylic Acid) Derived Carbon Materials and Their Applications in Wastewater Treatment

School of Materials Science and Energy Engineering, Foshan University, Foshan 528000, China
Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China
Author to whom correspondence should be addressed.
Received: 23 January 2019 / Revised: 3 March 2019 / Accepted: 5 March 2019 / Published: 8 March 2019
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Functional carbon materials have been developed and applied in various sewage treatment applications in recent years. This article reports the fabrication, characterization, and application of a new kind of poly (allylthiourea-co-acrylic acid) (PAT–PAC) hydrogel-based carbon monolith. The results indicated that the poly acrylic acid component can endow the PAT–PAC hydrogel with an increased swelling ratio and enhanced thermal stability. During the carbonization process, O–H, N–H, C=N, and –COO– groups, etc. were found to be partly decomposed, leading to the conjugated C=C double bonds produced and the clear red shift of C=O bonds. Particularly, it was found that this shift was accelerated under higher carbonization temperature, which ultimately resulted in the complex conjugated C=C network with oxygen, nitrogen, and sulfur atoms doped in-situ. The as-obtained carbon monoliths showed good removal capacity for Ni(II) ions, organic solvents, and dyes, respectively. Further analysis indicated that the Ni(II) ion adsorption process could be well described by pseudo-second-order and Freundlich models under our experimental conditions, respectively. The adsorption capacity for Ni(II) ions and paraffin oil was as high as 557 mg/g and 1.75 g/g, respectively. More importantly, the as-obtained carbon monoliths can be recycled and reused for Ni(II) ions, acetone, and paraffin oil removal. In conclusion, the proposed PAT–PAC-based carbonaceous monoliths are superior adsorbents for wastewater treatment. View Full-Text
Keywords: poly allylthiourea; poly acrylic acid; carbonization; adsorption; wastewater treatment poly allylthiourea; poly acrylic acid; carbonization; adsorption; wastewater treatment

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Liang, L.; Li, C.; Hou, T.; Zhong, Z.; Chen, D.; Li, S.; Hu, Z.; Yang, H.; Ye, X. Preparation of Poly (Allylthiourea-Co-Acrylic Acid) Derived Carbon Materials and Their Applications in Wastewater Treatment. Molecules 2019, 24, 957.

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