Novel Biosynthesis of Spherical Tungsten Trioxide Nanoparticles for Sustainable Photocatalytic Application

ABSTRACT We developed a novel method for synthesizing tungsten trioxide nanoparticles, utilizing orange juice as a sustainable and economical catalyst. This innovative approach eliminates the need for expensive metals and harsh chemicals. The natural components of orange juice, particularly ascorbic acid and citric acid, play a crucial role in the formation and stabilization of these nanoparticles. We thoroughly tested the synthesized nanoparticles using a suite of analytical techniques, including X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, and Fourier transform infrared spectroscopy. The results were compelling. When exposed to UV light, the nanoparticles were able to degrade approximately 95% of the model pollutant, methyl orange, demonstrating a rapid and efficient performance. Without the presence of these nanoparticles, the degradation of the pollutant was minimal. This confirms the effectiveness of the tungsten trioxide nanoparticles as a potent and environmentally friendly solution for pollutant degradation in various applications. This method not only offers a green alternative to traditional nanoparticle synthesis but also highlights the potential of using common natural resources in advanced environmental applications.