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Research Article

Fabrication of nanodiamonds/polyaniline nanocomposite for bilirubin adsorption in hemoperfusion

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Article: 2300475 | Received 31 Oct 2023, Accepted 25 Dec 2023, Published online: 10 Feb 2024
 

Abstract

Carbon-based nanomaterials have been explored as effective adsorbents to remove bilirubin in hemoperfusion therapy. However, developing carbon-based absorbents with both high adsorption capacity and good hemocompatibility remains a challenge in clinical applications. In this study, an efficient adsorbent for bilirubin removal was fabricated by grafting polyaniline (PANI) onto nanodiamonds (NDs). The nanocomposite ND-PANI had negligible effect on the hemolytic activity, confirming its excellent blood compatibility. The adsorption results revealed that the ND-PANI had high adsorption capacities (947 mg/g) and rapid adsorption rate toward bilirubin. Moreover, it exhibited efficient bilirubin adsorption in bovine serum albumin (BSA) solution, indicating its potential for practical application. Additionally, the adsorption kinetics and isotherms were systematically analyzed and modeled, thereby offering insights into the possible adsorption mechanism. Our findings suggest that the ND-PANI could be used as an efficient sorbent for the bilirubin removal, offering a promising avenue for blood purification application.

Author contributions

Futao Wang: Conceptualization, Methodology, Validation, Data curation, Writing—Original Draft; Xiangyun Zheng: Data curation, Methodology, Writing—Original Draft, Visualization; Qi Zhao: Methodology, Formal analysis, Investigation, Writing—Reviewing and Editing; Yuchen Feng: Software, Validation; Guanyue Gao: Formal analysis, Visualization; Dalibor M. Stanković: Formal analysis, Writing—Review & Editing; Jinfang Zhi: Conceptualization, Writing-Reviewing and Editing, Super­vision, Funding acquisition.

Disclosure statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Funding

The authors thank the financial support from National Natural Science Foundation of China (Nos. 21874143, 22375210, and U21A2070).