Green synthesis of ZnO nanoparticles using Justicia adhatoda for photocatalytic degradation of malachite green and reduction of 4-nitrophenol

RSC Advances, Journal Year: 2025, Volume and Issue: 15(4), P. 2958 - 2980

Published: Jan. 1, 2025

Achieving the smallest crystallite/particle size of zinc oxide nanoparticles (ZnO NPs) reported to date, measuring 5.2/12.41 nm with Justicia adhatoda (J. adhatoda) leaf extract, this study introduces a facile green synthesis. Utilizing aqueous J. extract as both reducing and stabilizing agent, method leverages plant's rich phytochemical composition produce highly crystalline morphologically controlled ZnO NPs. This precise particle control highlights effectiveness synthesis process in morphological tuning. The synthesized NPs were thoroughly characterized using XRD, UV-vis spectroscopy, FTIR, FESEM, HRTEM, which collectively revealed superior crystallinity, morphology, unique surface properties conferred by bio-capping. photocatalytic performance these biogenic was evaluated for degradation two model pollutants: malachite (MG), synthetic dye, 4-nitrophenol (4-NP), toxic organic compound. exhibited exceptional efficiency, achieving 99.8% MG within 180 minutes demonstrating rapid reduction 4-NP 4-aminophenol reaction rate constant 0.245 min-1 under UV sunlight irradiation. Mechanistic studies attributed high reactive oxygen species (ROS) generation electron-hole pair interactions, supported improved charge separation area. work not only establishes potential adhatoda-mediated addressing persistent pollutants but also sets benchmark size-controlled By delivering scalable eco-friendly water remediation technologies, advances nanotechnology.

Language: Английский

---

State‐of‐the‐Art in Co₃O₄ Nanoparticle Synthesis and Applications: Toward a Sustainable Future

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(6)

Published: Feb. 1, 2025

Abstract Cobalt oxide nanoparticles (Co₃O₄ NPs) have emerged as highly versatile materials, recognized for their unique physicochemical properties, including superior thermal stability, magnetic characteristics, and exceptional catalytic activity. These properties driven extensive research into applications across diverse fields, such environmental remediation, energy storage, biomedical treatments. This review provides a comprehensive analysis of Co₃O₄ nanoparticle synthesis, focusing on both conventional methods advanced green synthesis approaches. Each method is critically assessed its impact particle morphology, size, compatibility, while addressing key challenges in achieving scalable eco‐friendly production. The functional NPs are explored detail, particularly roles photocatalytic pollutant degradation, antibacterial applications, devices, where distinctive spinel structure pivotal. consolidates recent advancements the field emphasizes innovation potential sustainable material solution next‐generation technologies.

Language: Английский

---

Optimizing structural and magnetic properties of sodium niobate ceramics via Fe and Cu Co-doping for multifunctional applications

Discover Materials, Journal Year: 2025, Volume and Issue: 5(1)

Published: Feb. 24, 2025

Language: Английский

---

SnO2/SnSbP nanocomposite–based ion-selective electrode for the trace level sensing of Pb2+ ions in waste water samples

Ionics, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Language: Английский

---

Surface-modified ZnO nanoparticles for enhanced environmental and biomedical performance

Hybrid Advances, Journal Year: 2024, Volume and Issue: unknown, P. 100342 - 100342

Published: Nov. 1, 2024

Language: Английский

---