Publisher: Royal Society of Chemistry (RSC)

Issue:

License: [{"start"=>{"date-parts"=>[[2026, 8, 12]], "date-time"=>"2026-08-12T00:00:00Z", "timestamp"=>1786492800000}, "content-version"=>"vor", "delay-in-days"=>223, "URL"=>"http://creativecommons.org/licenses/by/3.0/"}]

Publication date(s): 2026 (online)

Pages:

Volume: Issue:

Journal: Materials Advances

Link: [{"URL"=>"http://pubs.rsc.org/MA/article-pdf/doi/10.1039/D6MA00499G/0/D6MA00499G.pdf", "content-type"=>"unspecified", "content-version"=>"vor", "intended-application"=>"similarity-checking"}]

In this study, a ternary nanocomposite consisting of zeolitic imidazolate framework-8 (ZIF-8), copper ferrite (CuFe2O4), and graphitic carbon nitride (g-C3N4) was synthesized via hydrothermal and solvothermal methods and its activity was investigated for the photocatalytic reduction of Cr(vi) ion in aqueous solutions. The ZIF-8/CuFe2O4/g-C3N4 nanocomposite was fully characterized using various techniques, confirming its suitable structural, surface, and magnetic properties. The photocatalytic removal of Cr(vi) from aqueous solutions was performed over ZIF-8/CuFe2O4/g-C3N4 nanocomposite under visible light irradiation, and the process parameters were optimized using response surface methodology (RSM) based on a central composite design (CCD). The optimal conditions were found to be pH 2.0, initial Cr(vi) concentration of 12.5 mg L−1, nanocomposite dose of 18.8 mg, and irradiation time of 50 min, under which a maximum reduction efficiency of 99.95% was obtained. Furthermore, the point of zero charge (pHpzc) of the nanocomposite was determined to be 7.74, indicating the surface charge behavior under different pH conditions. Kinetic studies revealed that the photocatalytic reduction of Cr(vi) followed a pseudo-first-order kinetic model, indicating a rapid and efficient reaction process. The ZIF-8/CuFe2O4/g-C3N4 nanocomposite exhibited excellent stability and reusability over five consecutive cycles, indicating its retained photocatalytic performance. Moreover, the nanocomposite showed a photocatalytic reduction efficiency of 98.50% for real wastewater, indicating its potential as an effective catalyst for practical wastewater treatment and environmental remediation applications.

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