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Helianthus annuus assisted green synthesis of Co 3 O 4 and Ag‐Co 3 O 4 and evaluation of their catalytic activities toward photodegradation of crystal violet dye
Author(s) -
Saeed Muhammad,
Haq Atta Ul,
Muneer Majid,
Usman Muhammad,
Naqvi Syed Ali Raza,
Adeel Muhammad,
Nisar Asif
Publication year - 2021
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13591
Subject(s) - helianthus annuus , sunflower , nuclear chemistry , fourier transform infrared spectroscopy , spinel , chemistry , materials science , chemical engineering , horticulture , engineering , metallurgy , biology
Nowadays, plants assisted green synthesis of metal oxide nanoparticles attracted the interest of researchers due to economic and environmental points of view. This article reports the Helianthus annuus (sunflower) leaves assisted green synthesis of Co 3 O 4 and Ag‐Co 3 O 4 particles. In this method, the leaves extract of Helianthus annuus (sunflower) is utilized as a reducing and stabilizing agent for the synthesis of Co 3 O 4 and Ag‐Co 3 O 4 particles. XRD and FTIR confirmed the crystalline and spinel phase of prepared Co 3 O 4 and Ag‐Co 3 O 4 particles. The catalytic activities of prepared particles were evaluated over the photodegradation of crystal violet dye under visible irradiation. About 63% and 98% of 100 mg/L degraded over 0.002 g/ml of Co 3 O 4 and Ag‐Co 3 O 4, respectively. The reaction kinetics and mechanism were described in terms of the Eley‐Rideal mechanism. The rate constant was determined as 0.0075 and 0.0167 per minute for Co 3 O 4 and Ag‐Co 3 O 4, respectively.