Green Light Promoted Photoreduction of Carbonate to Acetic Acid by Zinc Ash-Derived ZCu@ZnO,ACS Sustainable Chemistry & Engineering

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Green Light Promoted Photoreduction of Carbonate to Acetic Acid by Zinc Ash-Derived ZCu@ZnO
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2024-09-12 , DOI: 10.1021/acssuschemeng.4c04755
Rohit ₁ , Jaidev Kaushik _{1,

2} , Vishrant Kumar ₃ , Mukesh Jain ₁ , Shyam Kumar Choudhary ₄ , Shankar Chakma ₅ , Sumit Kumar Sonkar ₁

Affiliation

Herein, we have synthesized zinc oxide (ZnO) particles from the zinc ash generated as waste in the galvanization process in the steel industry, ZnO particles were decorated with copper oxide (CuO) nanoparticles, and then further activated by reducing them to get a heterojunction photocatalyst (ZCu@ZnO). Thereafter, ZCu@ZnO is utilized for the photoreduction of carbonate to acetic acid (AcOH) in a H₂O₂–water mixture as a hydrogen-rich solvent under the illumination of various light sources. Moreover, various physical and chemical parameters, such as solvent mixture, light sources (monochromatic lights and sunlight), photocatalysts, time, etc., were also optimized to get the maximum yield of AcOH (∼0.47 M). The mechanism of photoreduction of carbonate to AcOH is also being proposed based on scavenging experiments of free radicals.

中文翻译：

绿光促进锌灰衍生ZCu@ZnO将碳酸盐光还原为乙酸

在此，我们从钢铁工业镀锌过程中作为废料产生的锌灰合成了氧化锌（ZnO）颗粒，ZnO 颗粒用氧化铜（CuO）纳米颗粒装饰，然后通过还原它们进一步活化以获得异质结光催化剂（ZCu@ZnO）。此后，ZCu@ZnO 在各种光源的照射下，作为富氢溶剂，在 H₂O₂-水混合物中用于将碳酸盐光还原为乙酸（AcOH）。此外，还优化了各种物理和化学参数，如溶剂混合物、光源（单色光和太阳光）、光催化剂、时间等，以获得 AcOH 的最大产率（∼0.47 M）。碳酸盐光还原为 AcOH 的机制也基于自由基的清除实验而被提出。

更新日期：2024-09-12

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