Enhanced visible light-driven photocatalytic performance of CdSe nanorods

G Ramalingam; C Maria Magdalane; B Arjun Kumar; R Yuvakkumar; G Ravi; A Irudaya Jothi; Naresh Kumar Rotte; G Murugadoss; Antony Ananth

doi:10.1016/j.envres.2021.111855

Enhanced visible light-driven photocatalytic performance of CdSe nanorods

Environ Res. 2022 Jan:203:111855. doi: 10.1016/j.envres.2021.111855. Epub 2021 Aug 9.

Authors

G Ramalingam¹, C Maria Magdalane², B Arjun Kumar³, R Yuvakkumar⁴, G Ravi⁴, A Irudaya Jothi⁵, Naresh Kumar Rotte², G Murugadoss⁶, Antony Ananth

Affiliations

¹ Quantum Materials Research Lab (QMRL), Department of Nanoscience and Technology, Alagappa University, Karaikudi, 630003, Tamil Nadu, India. Electronic address: ramanloyola@gmail.com.
² Department of Chemistry, St. Xavier's College, Thirunelveli, 627002, Tamil Nadu-India.
³ Quantum Materials Research Lab (QMRL), Department of Nanoscience and Technology, Alagappa University, Karaikudi, 630003, Tamil Nadu, India.
⁴ Department of Physics, Alagappa University, Karaikudi, 630003, Tamil Nadu, India.
⁵ Department of Chemistry, St. Joseph's College (Affiliated to Bharathidasan University), Tiruchirappalli, 620002, Tamil Nadu, India.
⁶ Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamil Nadu, India.

PMID: 34384750
DOI: 10.1016/j.envres.2021.111855

Abstract

Cadmium selenide (CdSe) semiconductor nanorods are prepared in hydrothermal process using hydrazine hydrate (N₂H₄.H₂O) and ammonia (NH₃.H₂O) as reducing agents. The reaction time is increased to 7 h and the amount of hydrazine hydrate used is also increased to 15 mL which have resulted in diminished stacking faults in the CdSe nanorods prepared. The crystal structure, morphological variations, and size of the prepared CdSe nanorods are examined by XRD analysis. The crystalline size of the CdSe nanorods is 20-30 nm in diameter. HRTEM images reveal the formation of high order CdSe nanorods of the length about 25-40 nm. The bandgap in the CdSe nanoparticles is determined to be 2.17 eV. The peak at 595 nm in photoluminescence (PL) spectrum indicates oxygen vacancy defects in the prepared CdSe sample. The variation of dielectric properties with respect to temperature and frequency of pelletized CdSe is studied. High photocatalytic efficiency (98%) of catalyst/H₂O₂ is also achieved for decomposition of Rhodamine-B dye.

Keywords: CdSe nanorods; Dielectric studies; Dye degradation; Photocatalyst; Rhodamine-B.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cadmium Compounds*
Hydrogen Peroxide
Light
Nanotubes*
Selenium Compounds*

Substances

Cadmium Compounds
Selenium Compounds
cadmium selenide
Hydrogen Peroxide