电解pH值对光电化学水氧化的影响。
The impact of electrolytic pH on photoelectrochemical water oxidation.
作者信息
Biswas Neeraj Kumar, Srivastav Anupam, Saxena Sakshi, Verma Anuradha, Dutta Runjhun, Srivastava Manju, Upadhyay Sumant, Satsangi Vibha Rani, Shrivastav Rohit, Dass Sahab
机构信息
Department for Continuing Education, University of Oxford Rewley House, 1 Wellington Square Oxford OX1 2JA UK
Department of Chemistry, Faculty of Science, Dayalbagh Educational Institute Agra 282005 India.
出版信息
RSC Adv. 2023 Feb 1;13(7):4324-4330. doi: 10.1039/d2ra07271h. eCollection 2023 Jan 31.
Harnessing solar energy for clean and sustainable fuel production by photoelectrochemical water oxidation over different timescales has been extensively investigated. However, the light-driven photoelectrochemical water oxidation reaction for artificial photosynthesis suffers from poor photon-to-current efficiency. Herein, we demonstrate an experimental analysis of electrolytic pH on photoelectrochemical syngas production by varying the pH of the KOH and NaOH electrolytes using the N-ZnO photoelectrode and analyzing all variables. A maximum photocurrent of 13.80 mA cm at 1.23 V RHE with a 43.51% photon-to-current conversion efficiency was obtained at pH 13 in the aqueous NaOH electrolyte.
通过光电化学水氧化在不同时间尺度上利用太阳能进行清洁和可持续燃料生产已得到广泛研究。然而，用于人工光合作用的光驱动光电化学水氧化反应存在光子到电流效率低的问题。在此，我们通过使用N-ZnO光电极改变KOH和NaOH电解质的pH值并分析所有变量，对电解pH对光电化学合成气生产进行了实验分析。在pH为13的NaOH水性电解质中，在1.23 V RHE下获得了13.80 mA cm的最大光电流，光子到电流转换效率为43.51%。
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