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Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...

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Bioinspired Microreactor for Iodide Adsorption and Photooxidation Recovery.

Xuewen Cao¹, Xuefeng Tian¹, Jun Zhang¹

¹School of Marine Sciences State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|February 25, 2026

Summary

This summary is machine-generated.

This study introduces a bioinspired micro-ionic-reactor using porous organic polymers for efficient iodine recovery. The novel material rapidly captures and converts iodide ions, offering a sustainable solution for iodine scarcity.

Keywords:

bioinspired microreactor brine iodide ion photooxidation recovery capacity

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Area of Science:

Materials Science
Environmental Chemistry
Chemical Engineering

Background:

Iodine is crucial for industry and biology but faces scarcity and inefficient recovery.
Conventional methods for iodine recovery are often inefficient and costly.

Purpose of the Study:

To design a bioinspired material for efficient iodide capture and in situ conversion.
To develop a sustainable strategy for strategic iodine resource recovery and environmental remediation.

Main Methods:

A bioinspired micro-ionic-reactor based on a porous organic polymer (MIR-POP) was designed.
The MIR-POP integrates iodide capture via electrostatic enrichment and photooxidative conversion.
Performance was evaluated using simulated mining wastewater and natural brine.

Main Results:

MIR-POP achieved a record iodide uptake capacity of 853.06 mg g⁻¹.
High recovery efficiencies were obtained: 93.8% in simulated wastewater and 85.8% in natural brine.
The material demonstrated remarkable selectivity for iodide ions over competing anions.

Conclusions:

The bioinspired microreactor platform offers a novel approach for selective iodide ion recovery and in situ conversion.
This strategy advances both environmental remediation and strategic iodine resource management.
MIR-POP shows significant potential for practical applications in complex environmental matrices.