A Critical Review on the Influence of pH on the Adsorption Performance of Magnetic Nanocomposites

Xiaoxi Li

doi:10.47297/taposatWSP2633-456915.20260704

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A Critical Review on the Influence of pH on the Adsorption Performance of Magnetic Nanocomposites

Volume 7, Issue 4

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A Critical Review on the Influence of pH on the Adsorption Performance of Magnetic Nanocomposites
A Critical Review on the Influence of pH on the Adsorption Performance of Magnetic Nanocomposites
Composite Materials and Engineering, Sino-German College of Engineering, Qingdao University of Science and Technology, Qingdao,S handong, 266427, China
Vol. 7, Issue 4, Pages: 89-93(2026)
Published：30 April 2026
DOI：10.47297/taposatWSP2633-456915.20260704
Accepted：

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Li Xiaoxi.A Critical Review on the Influence of pH on the Adsorption Performance of Magnetic Nanocomposites[J].Theory and Practice of Science and Technology,2026,07(04):89-93.
DOI：

Li Xiaoxi.A Critical Review on the Influence of pH on the Adsorption Performance of Magnetic Nanocomposites[J].Theory and Practice of Science and Technology,2026,07(04):89-93. DOI： 10.47297/taposatWSP2633-456915.20260704.

摘要

Abstract

Magnetic nanocomposites have garnered increasing attention as high-performance adsorbents for water remediation

owing to their large surface areas

chemically tunable interfaces

and ease of separation under external magnetic fields. Among the many variables that govern their adsorption behavior

solution pH stands out as a factor of singular importance—simultaneously shaping the surface charge of the adsorbent

dictating the speciation of contaminants

and mediating competitive interactions at the solid–liquid interface. This review offers a systematic and critical synthesis of current knowledge regarding the pH-dependent adsorption performance of magnetic nanomaterials. It begins by elucidating the fundamental mechanisms through which pH influences adsorption

including electrostatic modulation

contaminant speciation

and competitive ion effects. It then surveys the methodological landscape

from batch experiments to advanced characterization and modeling approaches. Drawing on a broad range of recent studies

the review identifies optimal pH windows for various classes of contaminants and evaluates the adsorption capacities achieved under these conditions. Despite considerable progress

several persistent limitations remain—chief among them

narrow operating pH ranges

limited molecular-level mechanistic insight

and a lack of validation under realistic environmental conditions. In response

the review outlines a set of forward-looking strategies: the rational design of pH-resilient adsorbents

the integration of in-situ characterization with computational modeling

the transition to complex

real-world matrices

and the adoption of sustainable synthesis and data-driven discovery approaches. Collectively

these efforts aim to bridge the gap between laboratory innovation and practical application

advancing magnetic nanocomposites toward scalable

sustainable water purification technologies.

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Keywords

references

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