Analysis of the Heat Treatment Effect of CsPbBr₃ Photoanode on the Photoelectrochemical Performance: Preliminary Results

Abstract:

The perovskite CsPbBr₃ possesses good photoelectrochemical properties, making it a potential candidate for use as a photoanode. The commonly used photoanode is the FTO/TiO₂/CsPbBr₃ photoanode in water splitting applications. However, there has been no research conducted on the FTO/TiO₂/CsPbBr₃ photoanode for the oxidation of glucose derived from abundant biomass sources. This study aims to analyze the influence of heat treatment and glucose concentration on the performance of glucose oxidation, as well as the efficiency of glucose conversion and electricity production. First, CsPbBr₃ solution is prepared under vacuum conditions using the Ligand Assisted Reprecipitation (LARP) method. Subsequently, the fabrication process of the FTO/TiO₂/CsPbBr₃ photoanode is carried out with variations including no heat treatment, heat treatment at a temperature of 110°C, and variations in glucose solution concentrations of 0.2 M and 0.5 M. XRD and SEM tests are conducted to determine the formed phases and morphology of CsPbBr₃. The XRD and SEM results confirm the presence of CsPbBr₃ phase and the formation of CsPb₂Br₅ phase due to the heat treatment process. The EIS testing reveals that the heat treatment process induces an oxidation process in the CsPbBr₃ perovskite, which can decrease the glucose oxidation performance of the FTO/TiO₂/CsPbBr₃ photoanode. Based on HPLC analysis, the highest conversion efficiency of glucose is 97.37%, respectively under 110 oC heat treatment and with 0.5 M glucose.

• Periodical: Key Engineering Materials (Volume 965)
• Pages: 91-98
• DOI: https://doi.org/10.4028/p-k5Ytzd
• Online since: November 2023
• Authors: Ahmad Fahmi Prakoso, Michaela Claresta Erja Maheswari, Sutarsis Sutarsis, Azzah Dyah Pramata*
• Keywords: Glucose Oxidation, Heat Treatment, Photoanode, Photoelectrochemistry

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