TiO2/ZnO: Type-II Heterostructures for electrochemical crystal violet dye degradation studies


  • Dilip Kumar Behara JNT University Anantapur, Andhra Pradesh http://orcid.org/0000-0002-4005-7234
  • Jalajakshi Tammineni JNT University Anantapur, Andhra Pradesh
  • Mukkara Sudha Maheswari JNT University Anantapur, Andhra Pradesh




TiO2, ZnO, Type-II Heterostructure, Electrochemical, Dye degradation, Crystal violet.


Semiconductor nanomaterials with proper band edge alignments forming “heterostructure” assemblies have significant importance in water splitting, dye degradation, and other electrochemical studies. The formed heterojunction between material phases facilitates fast charge carrier transport and, thereby, improves electrochemical performance in associated processes. Herein, we report a type-II heterostructure combining TiO2 and ZnO nanomaterials for electrochemical crystal violet dye degradation studies. The rationale in choosing the above materials (TiO2, ZnO) in the present study includes stability, lack of toxicity, and high oxidation power, but they also facilitate fast charge carrier movements due to proper band edge alignments, forming a type-II heterostructure assembly. Cyclic voltammetry, combined with ultraviolet-visible analysis, was used to identify the cathodic and anodic peak currents and trace the exact mechanism of dye degradation. The electro-catalytic performance of TiO2/ZnO heterostructured materials fabricated on titania (Ti) substrate show higher performance, in comparison to all individual material interfaces, due to synergistic interaction and synchronized charge transport.

Author Biographies

Dilip Kumar Behara, JNT University Anantapur, Andhra Pradesh

Assistant Professor & Deputy Controller of Examinations

Department of Chemical Engineering,

JNTUA College of Engineering, Anantapur, Anantapuramu, Andhra Pradesh, INDIA

Jalajakshi Tammineni, JNT University Anantapur, Andhra Pradesh

MTech Student, Dept of Chemical Engineering

JNTUA College of Engineering, Anantapur, Anantapuramu, Andhra Pradesh, INDIA

Mukkara Sudha Maheswari, JNT University Anantapur, Andhra Pradesh

MTech Student, Dept of Chemical Engineering

JNTUA College of Engineering, Anantapur, Anantapuramu, Andhra Pradesh, INDIA


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How to Cite

Behara, D. K., Tammineni, J., & Maheswari, M. S. (2020). TiO2/ZnO: Type-II Heterostructures for electrochemical crystal violet dye degradation studies. Macedonian Journal of Chemistry and Chemical Engineering, 39(2), 217–226. https://doi.org/10.20450/mjcce.2020.2058



Materials Chemistry