ZnMoO4/芦荟衍生多孔碳的化学共沉淀法制备及催化性能

通过两步活化和化学共沉淀法分别制备了芦荟衍生多孔碳(aloe-derived porous carbon,APC)、ZnMoO₄和ZnMoO₄/APC催化剂，并研究了3种催化剂作为染料敏化太阳能电池(dye-sensitized solar cells,DSSCs)对电极时在D35/Y123染料和Cu²⁺/Cu⁺体系中的电化学特性和光伏性能。通过场发射扫描电子显微镜(FESEM)、X射线光电子能谱(XPS)和N₂吸附-脱附测试表征了APC、ZnMoO₄和ZnMoO₄/APC的微观结构、化学成分、比表面积和孔结构。结果表明：APC为多孔网络结构，比表面积为1 439m²·g^-1,ZnMoO₄纳米颗粒均匀嵌入或分散在APC表面。ZnMoO₄/APC在D35或Y123染料和Cu²⁺/Cu⁺电解液的DSSC中，分...

Chemical Co-precipitation Preparation of ZnMoO4/Aloe-Derived Porous Carbon and Catalytic Performance

Herein,aloe-derived porous carbon(APC),ZnMoO₄,and ZnMoO₄/APC catalysts were successfully prepared by two-step activation and chemical co-precipitation,respectively.As counter electrodes(CEs)in dyesensitized solar cells(DSSCs),the electrochemical properties and photovoltaic performance of these three CE catalysts in Cu-mediated DSSCs with D35 and Y123 dyes were explored.The microstructure,chemical composition,specific surface area,and porous textures of APC,ZnMoO₄,and ZnMoO₄/APC were characterized by field emission scanning electron microscopy(FESEM),X-ray photoelectron spectroscopy(XPS),and N₂ adsorption-desorption isotherms.The results show that APC was a porous network structure with a specific surface area of 1439 m²·g^-1,and ZnMoO₄ nanoparticles were evenly embedded or dispersed on the surface of APC.ZnMoO₄/APC delivered a power conversion efficiency(PCE)of 3.97%and 3.72%in the Cu²⁺/Cu⁺electrolyte-based DSSCs with D35 and Y123 dyes,respectively,which was higher than that of APC(2.72%,2.61%),ZnMoO₄(1.24%,1.08%)and Pt(2.86%,2.80%)at the same conditions.