Akhmetzhanov Nursalim, Zhang Mao, Lee Dongyun, Hwang Yoon-Hwae
Department of Nano Fusion Technology & BK FOUR Nanoconvergence Technology Division, Pusan National University, Busan 46241, Republic of Korea.
Department of Nanoenergy Engineering, Pusan National University, Busan 46241, Republic of Korea.
Materials (Basel). 2024 Aug 28;17(17):4259. doi: 10.3390/ma17174259.
In this study, we developed well-aligned ZnO nanoflowers coated with poly-10,12-pentacosadiyonic acid (p-PCDA@ZnO) and modified with Pt nanoparticle (Pt/p-PCDA@ZnO) hybrid photoanodes for highly efficient photoelectrochemical (PEC) water splitting. The scanning electron microscope (SEM) image shows that thin films of the p-PCDA layer were well coated on the ZnO nanoflowers and that Pt nanoparticles were on it. The photoelectrochemical characterizations were made under simulated solar irradiation AM 1.5. The current density of the p-PCDA@ZnO and the Pt/p- PCDA@ZnO was 0.227 mA/cm and 0.305 mA/cm, respectively, and these values were three times and four times higher compared to the 0.071 mA/cm of the bare ZnO nanoflowers. The UV-visible spectrum showed that the absorbance of coated p-PCDA films was extended in visible light region, which agrees with the enhanced PEC data for p-PCDA@ZnO. Also, adding Pt nanoparticles on top of the films as co-catalysts enhanced the PEC performance of Pt/p-PCDA@ZnO further. This indicates that Pt/p- PCDA@ZnO has a great potential to be implemented in solar water splitting.
在本研究中，我们制备了涂覆有聚-10,12-二十五碳二烯酸（p-PCDA@ZnO）并经铂纳米颗粒修饰（Pt/p-PCDA@ZnO）的排列良好的氧化锌纳米花复合光阳极，用于高效光电化学（PEC）水分解。扫描电子显微镜（SEM）图像显示，p-PCDA层薄膜很好地包覆在氧化锌纳米花上，且铂纳米颗粒位于其上。光电化学表征是在模拟太阳光照AM 1.5条件下进行的。p-PCDA@ZnO和Pt/p-PCDA@ZnO的电流密度分别为0.227 mA/cm²和0.305 mA/cm²，与裸氧化锌纳米花的0.071 mA/cm²相比，这些值分别高出三倍和四倍。紫外-可见光谱表明，涂覆的p-PCDA薄膜的吸光度在可见光区域有所扩展，这与p-PCDA@ZnO增强的PEC数据相符。此外，在薄膜顶部添加铂纳米颗粒作为共催化剂进一步提高了Pt/p-PCDA@ZnO的PEC性能。这表明Pt/p-PCDA@ZnO在太阳能水分解方面具有很大的应用潜力。
