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<p>In this work, zinc oxide nanoparticles (ZnO-NPs) were successfully synthesized from two precursors of zinc chloride (ZnCl<sub>2</sub>) and zinc nitrate (Zn(NO<sub>3</sub>)<sub>2</sub>), which was named ZnO-1 and ZnO-2, respectively, using <i>Curcuma longa</i> extract as a reducing and stabilizing agent. Effects of precursor types on characterization and tetracycline (TC) photodegradation efficiency were investigated. Indeed, characterization was assessed via modern analytical techniques, while the photocatalytic performance was examined within various factors, including reaction time, catalyst dosage, and TC concentration. Besides, the effects of reactive oxygen species (ROS) on photocatalysis were also evaluated in the presence of scavengers. As a result, ZnO-NPs produced from ZnCl<sub>2</sub> (ZnO-1) possessed a high crystallinity and uniform particle size as compared to those of ZnO-2 (derived from Zn(NO<sub>3</sub>)<sub>2</sub>). Also, the photodegradation of the</p><p>ZnO-1 was higher than ZnO-2, herein, the optimal conditions were recorded at 99.9% TC removal after 120&#xa0;min under the sunlight irradiation with 20&#xa0;mg of catalyst dosage and 10&#xa0;mg/L TC concentration. From the results, the ZnCl<sub>2</sub> precursor is appreciated for the synthesis of ZnO, such a potential catalyst utilized in environmental remediation.</p>

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Curcuma longa Extract-Mediated Synthesis of Zinc Oxide Nanoparticles from Different Salt Precursors: Characterization and Photocatalytic Evaluation Under Sunlight

  • 期刊论文

  • 发表日期：

    2025年5月16日

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  • Lu Thi Mong Thy,
  • Le Minh Huong,
  • Nguyen Cong Anh Minh,
  • Phan Nguyen Phu Hung,
  • Nguyen Thanh Hoai Nam,
  • Nguyen Minh Dat,
  • Nguyen Hung Vu,
  • Nguyen Duy Hai,
  • Le Ngoc Phuong Thanh,
  • Nguyen Huu Hieu

摘要

In this work, zinc oxide nanoparticles (ZnO-NPs) were successfully synthesized from two precursors of zinc chloride (ZnCl2) and zinc nitrate (Zn(NO3)2), which was named ZnO-1 and ZnO-2, respectively, using Curcuma longa extract as a reducing and stabilizing agent. Effects of precursor types on characterization and tetracycline (TC) photodegradation efficiency were investigated. Indeed, characterization was assessed via modern analytical techniques, while the photocatalytic performance was examined within various factors, including reaction time, catalyst dosage, and TC concentration. Besides, the effects of reactive oxygen species (ROS) on photocatalysis were also evaluated in the presence of scavengers. As a result, ZnO-NPs produced from ZnCl2 (ZnO-1) possessed a high crystallinity and uniform particle size as compared to those of ZnO-2 (derived from Zn(NO3)2). Also, the photodegradation of the

ZnO-1 was higher than ZnO-2, herein, the optimal conditions were recorded at 99.9% TC removal after 120 min under the sunlight irradiation with 20 mg of catalyst dosage and 10 mg/L TC concentration. From the results, the ZnCl2 precursor is appreciated for the synthesis of ZnO, such a potential catalyst utilized in environmental remediation.