ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

MOF-tungsten composite (MIL-88B(Fe)@WO₃) for photocatalytic degradation of rhodamine-B under UV light

Ekin Santoso Sim, Rinda Wardhani, Felycia Edi Soetaredjo, Jindrayani Nyoo Putro, Shella Permatasari Santoso, Jenni Lie, Hardy Shuwanto, Nyoman Puspa Asri, Alfin Kurniawan, and Suryadi Ismadji

Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Surabaya, Indonesia

E-mail: suryadiismadji@yahoo.com

Received: 25 December 2024  Accepted: 30 May 2025

Abstract:

A MIL-88B(Fe)@WO₃ composite material was used in this work as a photocatalyst for degrading the synthetic dye rhodamine-B in water. The synthesis of MIL-88B(Fe)@WO₃ was achieved by the solvothermal technique at 150 °C for 12 h. The introduction of WO₃ into the MIL-88B(Fe) framework has a positive effect on the pore structure of the composite material produced. The BET surface area and total pore volume exhibit a direct proportionality to the magnitude of the applied WO₃ ratio. A reduction in the concentration of rhodamine-B was observed when the degradation of rhodamine-B was carried out in the presence of UV light and catalyst. However, this reduction was not as significant as the degradation of rhodamine-B in the presence of UV light, catalyst, and H₂O₂. The present study also provides the process underlying the photodegradation of rhodamine-B dyes. Except for the M₁W₂ catalyst, nearly all systems have a greater R² value for the first-order kinetic equation. The reusability analysis revealed a modest decrease in the performance of the M₁W₁ composite as the number of cycles increased. However, its efficacy remained largely unaffected even after undergoing a degradation reaction and subjected to several washings.

Keywords: Solvothermal; Photodegradation; Reusability; Composite; Catalyst

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04166-6

Chemical Papers 79 (9) 5971–5986 (2025)