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<p>In this paper, NiO/Ag<sub>2</sub>CO<sub>3</sub> heterojunction was prepared by ultrasonic assisted precipitation method. XRD, SEM, TEM, PL, EIS and UV–Vis DRS were used to analyze the morphology, structural composition, optical and electrical properties of NiO/Ag<sub>2</sub>CO<sub>3</sub>. The NiO/Ag<sub>2</sub>CO<sub>3</sub> composite photocatalysts exhibited good photocatalytic degradation activity on the non-azo dyes Rhodamine B (RhB), Methylene Blue (MB) and the azo dye Methyl Orange (MO) after irradiation for 30&#xa0;min, with degradation efficiencies of 95.98%, 98.52%, and 87.68%, respectively. This is mainly attributed to the construction of heterojunctions and the increase in the separation rate of photogenerated electron–hole pairs. The free radical capture experiment confirmed that the main active substances in the reaction process are h<sup>+</sup> and·O<sub>2</sub><sup>−</sup>, while the role of OH in the degradation process is relatively small.</p>

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Synthesis of NiO/Ag2CO3 heterojunctions and their visible light catalytic activity

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • Shuang Gao,
  • Yong Li,
  • Tian Li,
  • Yulan Ren

摘要

In this paper, NiO/Ag2CO3 heterojunction was prepared by ultrasonic assisted precipitation method. XRD, SEM, TEM, PL, EIS and UV–Vis DRS were used to analyze the morphology, structural composition, optical and electrical properties of NiO/Ag2CO3. The NiO/Ag2CO3 composite photocatalysts exhibited good photocatalytic degradation activity on the non-azo dyes Rhodamine B (RhB), Methylene Blue (MB) and the azo dye Methyl Orange (MO) after irradiation for 30 min, with degradation efficiencies of 95.98%, 98.52%, and 87.68%, respectively. This is mainly attributed to the construction of heterojunctions and the increase in the separation rate of photogenerated electron–hole pairs. The free radical capture experiment confirmed that the main active substances in the reaction process are h+ and·O2−, while the role of OH in the degradation process is relatively small.