Adsorption Characteristics and Mechanisms of Dibutyl Phthalate on Nanomaterials

IF 1.7 4区工程技术 Q3 ENGINEERING, CHEMICAL

Asia-Pacific Journal of Chemical Engineering Pub Date : 2025-12-12 DOI:10.1002/apj.70199

Ying Wang, Haiyue Chen, Hongbao Liang, Hongbao Liang, Hongwu Liang, Hongwu Liang

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引用次数: 0

Abstract

ABSTRACT Dibutyl phthalate (DBP) is a widely used plasticizer whose environmental release poses significant risks to ecosystems and human health. This study systematically investigated DBP adsorption on three common nanomaterials—titanium dioxide nanoparticles (n‐TiO 2 ), multiwalled carbon nanotubes (MWCNTs), and carboxylated MWCNTs (MWCNTs‐COOH)—using comprehensive kinetic, isotherm, and thermodynamic analyses. Adsorption equilibrium was rapidly achieved on carbon‐based materials (8 h) compared to n‐TiO 2 (24 h), with adsorption capacities following the order MWCNTs > MWCNTs‐COOH > n‐TiO 2 . Kinetic modeling indicated that DBP adsorption on n‐TiO 2 is predominantly governed by physical processes, whereas adsorption on MWCNTs and MWCNTs‐COOH involves a combination of physisorption and chemisorption. The Freundlich isotherm model best described the adsorption for all three materials, suggesting heterogeneous multilayer adsorption. Although initial pH (5.3–7.9) had a negligible effect, the presence of humic acid significantly enhanced DBP adsorption on MWCNTs. Thermodynamic analysis revealed that the adsorption was spontaneous and endothermic for all materials. These findings provide crucial mechanistic insights into DBP‐nanomaterial interactions and highlight that carbon‐based nanomaterials, particularly MWCNTs, are highly effective for DBP removal from aquatic environments.

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邻苯二甲酸二丁酯在纳米材料上的吸附特性及机理

邻苯二甲酸二丁酯（DBP）是一种广泛使用的增塑剂，其环境释放对生态系统和人类健康造成重大风险。本研究系统地研究了DBP在三种常见纳米材料——二氧化钛纳米颗粒（n‐tio2）、多壁碳纳米管（MWCNTs）和羧化碳纳米管（MWCNTs‐COOH）上的吸附，采用了综合动力学、等温线和热力学分析。与n - tio2 （24 h）相比，碳基材料在8 h上迅速达到吸附平衡，吸附量顺序为MWCNTs >； MWCNTs‐COOH > n‐tio2。动力学模型表明，DBP在n - tio2上的吸附主要由物理过程控制，而在MWCNTs和MWCNTs - COOH上的吸附则涉及物理吸附和化学吸附的结合。Freundlich等温线模型最好地描述了这三种材料的吸附，表明非均相多层吸附。虽然初始pH（5.3-7.9）的影响可以忽略不计，但腐植酸的存在显著增强了DBP在MWCNTs上的吸附。热力学分析表明，所有材料的吸附都是自发的吸热吸附。这些发现为DBP -纳米材料相互作用提供了重要的机理见解，并强调了碳基纳米材料，特别是MWCNTs，对水生环境中DBP的去除非常有效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Asia-Pacific Journal of Chemical Engineering ENGINEERING, CHEMICAL-

自引率

11.10%

发文量

111

期刊介绍： Asia-Pacific Journal of Chemical Engineering is aimed at capturing current developments and initiatives in chemical engineering related and specialised areas. Publishing six issues each year, the journal showcases innovative technological developments, providing an opportunity for technology transfer and collaboration. Asia-Pacific Journal of Chemical Engineering will focus particular attention on the key areas of: Process Application (separation, polymer, catalysis, nanotechnology, electrochemistry, nuclear technology); Energy and Environmental Technology (materials for energy storage and conversion, coal gasification, gas liquefaction, air pollution control, water treatment, waste utilization and management, nuclear waste remediation); and Biochemical Engineering (including targeted drug delivery applications).