ItemArticle

Facile mechanochemical assembly of PANI-modified tetra-amino zinc phthalocyanine@Bi2O3 hybrid for enhanced visible-light-driven dye degradation

Title
Facile mechanochemical assembly of PANI-modified tetra-amino zinc phthalocyanine@Bi2O3 hybrid for enhanced visible-light-driven dye degradation
Creator
Swamynayaka, Ananda; Rajappa, Shwetha; Rego, Richelle M.; Kotresh, Harish Makri Nimbegondi; Patil, Chandrashekhar S.; Bae, Jinho; Kurkuri, Mahaveer D.
Description
This work describes a fast, green, and solvent-free mechanochemical route to produce an advanced photocatalyst tetra-amino zinc phthalocyanine embedded in a polyanilineBi2O3 matrix (PANI-TAZnPc@Bi2O3). Comprehensive FTIR, Raman, FESEM, XRD, HRTEM, and DRS analyses confirm the successful synthesis of the materials, revealing irregular nanoscale particles with crystallite sizes of 8.36 nm (TAZnPc), 29.26 nm (Bi2O3), and 29.86 nm (PANITAZnPc@Bi2O3). TGA reveals that Bi2O3 exhibits excellent thermal stability up to 930 C, while the PANITAZnPc@Bi2O3 composite up to about 150 C. The photocatalytic performance was evaluated by degrading methylene blue (MB) in the presence of H2O2 under visible light, with systematic variations in catalyst dosage, irradiation time, solution pH, and reusability. Compared to bare Bi2O3 and TAZnPc@Bi2O3, the PANI-TAZnPc@Bi2O3 composite showed superior activity- its narrower band gap, enhanced MB adsorption, and reduced electronhole recombination, achieving 99.75 % dye removal in 100 min under optimal conditions. The PANITAZnPc@Bi2O3 photocatalyst demonstrated excellent stability, retaining its photocatalytic activity over five consecutive cycles with no significant changes in its XRD and FTIR profiles. Reactive species such as OH and O?? drive methylene blue degradation, leading to its mineralization into inorganic ions as confirmed by ionic chromatography. Finally, a detailed photocatalytic mechanism is proposed to explain the enhanced performance of this nanocomposite. 2025 Elsevier B.V.
Source
Surfaces and Interfaces;Volume;78;Issue;;Article No.;108178;
Date
01-01-2025
Publisher
Elsevier B.V.
Subject
Mechanochemical synthesis; Methylene blue degradation; Phthalocyanine; Type II heterojunction; Water pollution
Coverage
Swamynayaka A., Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Karnataka, Bengaluru, 562112, India; Rajappa S., Department of Sciences and Humanities, School of Engineering and Technology, Christ University, Mysore Road, Bangaluru, Kumbalagodu, 560074, India; Rego R.M., Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Karnataka, Bengaluru, 562112, India; Kotresh H.M.N., Department of Chemistry, Acharya Institute of Technology, Bengaluru, 560107, India; Patil C.S., Department of Ocean System Engineering, Jeju National University, 102 Jejudaehakro, Jeju, 63243, South Korea, Department of Physics, Khalifa University, Abu Dhabi, 127788, United Arab Emirates; Bae J., Department of Ocean System Engineering, Jeju National University, 102 Jejudaehakro, Jeju, 63243, South Korea; Kurkuri M.D., Centre for Research in Functional Materials (CRFM), JAIN (Deemed-to-be University), Jain Global Campus, Karnataka, Bengaluru, 562112, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 24680230;
Format
online
Language
English
Type
Article

Citation

Swamynayaka, Ananda; Rajappa, Shwetha; Rego, Richelle M.; Kotresh, Harish Makri Nimbegondi; Patil, Chandrashekhar S.; Bae, Jinho; Kurkuri, Mahaveer D., “Facile mechanochemical assembly of PANI-modified tetra-amino zinc phthalocyanine@Bi2O3 hybrid for enhanced visible-light-driven dye degradation,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22465.

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