Synthesis and metal ion sorption properties of peroxide-modified sodium titanate materials using a coprecipitation method

• Peroxide-modified sodium titanate is synthesized to enhance metal ion sorption capacity.
• Mechanism and microstructure of the peroxide-modified titanate were studied.
• In the pH range of 6–7, the highest ion exchange ability is noted, up to 170 mg/g.
• The pH value is crucial for the synthesis of peroxide-modified titanate materials.

Peroxide-modified sodium titanate is synthesized by a coprecipitation method that uses titanium isopropoxide and sodium hydroxide precursors, with hydrogen peroxide as a mineralizer to modify the titanate to enhance actinide sorption. The mechanism and microstructure of the peroxide-modified titanate, synthesized using hydrogen peroxide at various pH values, and the effect on the sorption capacity of metal ions were studied. In the pH range of 8–9, the product experiences a highest weight loss of 34%, as well as the smallest sodium content and ion exchange capacity. In contrast, in the pH range of 6–7, the highest metal ion exchange ability is noted, up to 170 mg/g. The pH value is crucial for the synthesis of peroxide-modified titanate materials.

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