Preparation of gold nanoparticles using Salicornia brachiata plant extract and evaluation of catalytic and antibacterial activity.
The current study deals with the synthesis of gold nanoparticles (AuNPs) using Salicornia brachiata (Sb) and evaluation of their antibacterial and catalytic activity. The SbAuNPs showed purple color with a characteristic surface plasmon resonance peak at 532 nm. Scanning electron microscopy and transmission electron microscopy revealed polydispersed AuNPs with the size range from 22 to 35 nm. Energy dispersive X-ray and thin layer X-ray diffraction analysis clearly shows that SbAuNPs was pure and crystalline in nature. As prepared gold nanoparticles was used as a catalyst for the sodium borohydride reduction of 4-nitro phenol to 4-amino phenol and methylene blue to leucomethylene blue. The green synthesized nanoparticles exhibited potent antibacterial activity against the pathogenic bacteria, as evidenced by their zone of inhibition. In addition, we showed that the SbAuNPs in combination with the regular antibiotic, ofloxacin, exhibit superior antibacterial activity than the individual.
Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.
Khan Behlol
KB
Ayaz Ahmed
Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.
Swetha
S
Subramanian
Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.
Aravind
A
Sivasubramanian
SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, Suwon, South Korea.
Ganapathy
G
Veerappan
Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India. Electronic address: anbazhagan@scbt.sastra.edu.
Anbazhagan
A
Veerappan
D000627:Aminophenols / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000737:chemistry*; D001894:Borohydrides / Q000737:chemistry; D002384:Catalysis; D019663:Chenopodiaceae / Q000737:chemistry*; D005583:Fourier Analysis; D006046:Gold / Q000737:chemistry*; D055772:Green Chemistry Technology; D053768:Metal Nanoparticles / Q000737:chemistry*; D008751:Methylene Blue / Q000031:analogs & derivatives / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009596:Nitrophenols / Q000737:chemistry; D015242:Ofloxacin / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D020349:Surface Plasmon Resonance; D014961:X-Ray Diffraction
D000627:Aminophenols; D000900:Anti-Bacterial Agents; D001894:Borohydrides; D009596:Nitrophenols; D010936:Plant Extracts; D006046:Gold; C025364:sodium borohydride; D015242:Ofloxacin; C011010:hydromethylthionine; C026729:4-aminophenol; D008751:Methylene Blue; C024836:4-nitrophenol
Antibacterial; Catalysis; Gold nanoparticles; Plant extract; Reduction; Salicornia brachiata