Synergistic effects on BiFeO3 based cellulose acetate composite and efficient photocatalytic activities for wastewater treatment application

• Published in: Inorganic chemistry communications 2023-04, Vol.150, p.110494, Article 110494
• Main Authors: Izua Natasya Joaspizi, Julia, Atilia Athira Zaahari, Nor, Sagadevan, Suresh, Kobayashi, Takaomi, Adnan, Rohana, Shehu Imam, Saifullahi, Amirul Ramlan, Mohd, Haida Mohd Kaus, Noor
• Format: Article
• Language: English
• Subjects: Bismuth ferrite; Cellulose acetate; Crystal violet; Indigo carmine; Photocatalysis; Photofunctional Materials
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2023.110494

[Display omitted] •Photocatalyst composite film comprises cellulose acetate (CA) supported bismuth ferrite (CA/BFO) was successfully fabricated via phase inversion technique.•The composite was employed to assess its removal efficiency towards the mixture of crystal violet (CV) and indigo carmine (IC) dyes under direct sunlight.•The influence of pH, amount of adsorbent, initial dye concentration, and contact time were investigated.•Furthermore, the approach composite can be a promising alternative for co-existence of cationic and anionic dyes removal from wastewater due to its high efficiency and separation convenience. A photocatalyst composite film comprising cellulose acetate (CA)-supported bismuth ferrite (CA-BFO) was successfully fabricated using a phase-inversion technique. The composite was used to assess the removal efficiency for a mixture of crystal violet (CV) and indigo carmine (IC) dyes under direct sunlight. The effects of pH, amount of adsorbent, initial dye concentration, and contact time were investigated. The results indicated that the optimum pH for the removal of both cationic and anionic dyes was 6.0. The best catalyst loading of 0.04 g/L of BiFeO3 distributed in the cellulose acetate membrane could degrade up to 100 ppm of mixed dyes and remain efficient over a wide pH range. The results were consistent with those of single dye removal, with the composite exhibiting preferential adsorption to anionic dyes, IC and having a higher photocatalytic affinity for cationic dyes, CV. Thus, a synergistic mode of CV and IC dye removal by adsorption and photodegradation was proposed. Moreover, the composite approach is a promising alternative for the co-existence of cationic and anionic dye removal from wastewater because of its high efficiency and separation convenience.