An investigation of photocatalytic and biological properties of Croton bonplandianum-mediated Ag-Cu bimetallic nanoparticles

• Published in: Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2024-09, Vol.454, p.115729, Article 115729
• Main Authors: Chandra Gurrala, Ravi, Sahu, Somnath, Rekha Phani, P.S.D., Prasad, V.J.S.N., Kishore Babu, B., Dobbidi, Pamu
• Format: Article
• Language: English
• Subjects: Bimetallic nanoparticles; Croton bonplandianum L; Lowenstein Jensen; Methylene Blue; Microplate alamar blue assay; Photodegradation
• ISSN: 1010-6030; 1873-2666
• DOI: 10.1016/j.jphotochem.2024.115729

[Display omitted] •Synthesis of Ag-Cu bimetallic nanoparticles by the green method is achieved.•The Ag-Cu bimetallic nanoparticles are pure crystalline with reduced particle size.•Ag-Cu bimetallic nanoparticles show excellent photocatalytic activity.•Synthesized Ag-Cu BMNPs demonstrate enhanced antibacterial, anti-fungal, and anti-tuberculosis activities. The green synthesis of nanoparticles using plant parts and their essence is considered an archetypal tactic in material synthesis for environmental beneficence. Multitudinous metal nanoparticles with potential bioactivities have been prepared based on plant extract. This study's main objective is synthesizing Ag-Cu bimetallic nanoparticles (Ag-Cu BMNPs) using leaf extract of Croton bonplandianum L (CB). Furthermore, its photocatalytic, antibacterial, anti-fungal, and anti-tuberculosis activities are systematically investigated in detail. The surface morphology of the prepared sample is shown to be highly porous, with an average grain size of ∼ 16 nm. The FTIR spectra exhibited that the phytomolecules from CB leaf extract serve as a capping and reductantfor forming Ag-Cu BMNP. Brunauer-Emmitte-Teller (BET) comprehends the CB leaf extract to be an active, cost-effective, reusable, and high surface area catalyst. The sample exhibited improved photocatalytic activity with an efficiency of 92.31 % at the moderate catalyst dose of 30 mg against methylene blue (MB) dye. Ag-Cu BMNPs exhibited a 17 mm inhibition zone at higher concentrations against both gram (+ve) and gram (−ve) bacterial strains. Also, the synthesized Ag-Cu BMNPs produced a clear inhibition zone of 16 mm and 15 mm at lower concentrations. The anti-fungal activity against A. flavus and C. albicans at higher and lower concentrations produced a clear inhibition zone of 17 mm,15 mm, and 6 mm, 9 mm, respectively. In addition, the anti-tuberculosis activity against Mycobacteria tuberculosis exhibited good results at a 0.4 µg/mL concentration for the synthesized sample. Moreover, Ag-Cu BMNPs enhanced their biological ability and did not increase their cytotoxicity, which provides a potential for the clinical applications of Ag-Cu BMNPs. In general, the suggested method for producing Ag-Cu bimetallic nanoparticles is successful in combating microbiological diseases.