A robust PHDI-crosslinked cellulose aerogel loaded with CaCO ₃ for Congo red removal

Yumei Luo; Luo Li; Hong Xiao; Xiaodong Bai; Qiuqin Huang

doi:10.1039/d6nj00118a

January 1, 2026New Journal of Chemistry

A robust PHDI-crosslinked cellulose aerogel loaded with CaCO ₃ for Congo red removal

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Key Points

The aim is to develop a cellulose aerogel loaded with calcium carbonate for efficient dye removal from water.
Created a CaCO3/CA-PHDI aerogel through crosslinking and in situ mineralization.
Tested the adsorption capacity for Congo red dye across a range of pH levels from 3 to 11.
Evaluated the regeneration capability of the aerogel after dye removal.
Achieved a Congo red adsorption capacity of 191.6 mg g−1.
Demonstrated pH tolerance from 3 to 11.
Showed more than 73% regeneration capability of the aerogel after multiple cycles.

Implication

Demonstrates effective Congo red adsorption in a cellulose aerogel, suggesting a promising method for dye removal.

Abstract

A robust CaCO 3 /CA-PHDI aerogel via crosslinking & in situ mineralization achieves 191.6 mg g −1 Congo red adsorption, pH 3–11 tolerance, and >73% regeneration. The mechanism involves Ca 2+ coordination, hydrogen bonding, and electrostatic interactions.

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Cite This Study

Luo et al. (2026) studied this question.

synapsesocial.com/papers/69be38906e48c4981c679151 https://doi.org/10.1039/d6nj00118a

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A robust PHDI-crosslinked cellulose aerogel loaded with CaCO ₃ for Congo red removal

Key Points

Implication

Abstract

Discussion

Cite This Study

A robust PHDI-crosslinked cellulose aerogel loaded with CaCO ₃ for Congo red removal

Key Points

Implication

Abstract

Discussion

Cite This Study

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