In this study, a novel heterojunction silver phosphate-iron-graphene oxide -titanium phosphate (Ag₃PO₄/Fe/GTiP) composite was fabricated by the simple chemical process. The prepared composite was characterized by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible spectroscopy (UV-vis), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and electrochemical impedance spectroscopy (EIS). This catalyst was used as anode material in photocatalytic fuel cell (PFC) with cathode catalyst ZnIn₂S₄ for efficient degradation of rhodamine B (RhB) with sustainable electricity generation. In PFC the degradation of 90% RhB (10 mg/l) with electricity generation of 0.18 V during 70 min was achieved at pH-3 of 0.05 M Na₂SO₄ electrolyte. By increasing the RhB concentration up to 100 mg/l the electricity generation was increased up to 0.55 V. Under pure photocatalysis degraded 92.14% RhB (10 mg/l) with Ag₃PO₄/Fe/GTiP in 90 min. The discoloration efficiency and electricity generation are influenced by factors such as pH, external resistance, dye concentration, and aeration rate in the PFC. After four cycles of reuse, there was no decrease in PFC performance, which proves its positivity for sustainable energy generation as a greener technology.

本研究通过简单的化学方法制备了新型的异质结磷酸银-氧化铁-氧化石墨烯-磷酸钛（Ag ₃ PO ₄ / Fe / GTiP）复合材料。制备的复合材料通过X射线衍射（XRD），X射线光电子能谱（XPS），紫外可见光谱（UV-vis），Brunauer-Emmett-Teller（BET），扫描电子显微镜（SEM）进行表征，高分辨率透射电子显微镜（HRTEM）和电化学阻抗谱（EIS）。该催化剂用作带有阴极催化剂ZnIn ₂ S _4的光催化燃料电池（PFC）的阳极材料通过可持续发电有效地降解若丹明B（RhB）。在PFC中，在pH-3的0.05 M Na ₂ SO ₄电解质中，在70分钟内产生0.18 V的电，可降解90％RhB（10 mg / l）。通过将RhB浓度提高到100 mg / l，发电量提高到0.55V。在纯光催化下，用Ag ₃ PO ₄降解92.14％RhB（10 mg / l）。/ Fe / GTiP在90分钟内。PFC中的pH，外部电阻，染料浓度和充气速率等因素会影响褪色效率和发电量。经过四个重复使用周期后，PFC的性能没有下降，这证明了其作为绿色技术对可持续能源生产的积极作用。