Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental, School of Chemistry and Chemical Engineering, Huaiyin Normal University, No. 111 West Changjiang Road, Huaian 223300, China.
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China.
Molecules. 2023 Jan 22;28(3):1122. doi: 10.3390/molecules28031122.
The harmful effects on the human body from p-phenylenediamine (PPD) in hair dyes can cause allergies and even cancer. Therefore, it is particularly important to accurately control and detect the content of PPD in our daily products and environment. Here, a small amount of non-metallic elemental P doped in perovskite oxide of SrCoO (SC) forms a good catalytic material, SrCoPO (SCP), for PPD detection. The improved performance compared with that of the parent SC can be attributed to three contributing factors, including a larger amount of highly oxidative oxygen species O/O, better electrical conductivity, and more active sites on the P-oxygen bonds of SCP. Moreover, the lattice oxygen mechanism (LOM) with highly active species of lattice O vacancies and adsorbed -OO for electrocatalytic oxidation of PPD by the SCP/GCE (glass carbon electrode) sensor is proposed in our work. More importantly, the SCP/GCE sensor exhibits good stability, a low limit of detection, and high reliability (error < 5.78%) towards PPD determination in real samples of hair dyes, suggesting the substantial research potential for practical applications.
对苯二胺（PPD）在染发剂中对人体的有害影响会导致过敏，甚至癌症。因此，准确控制和检测我们日常产品和环境中 PPD 的含量尤为重要。在这里，少量非金属元素磷掺杂到钙钛矿氧化物 SrCoO（SC）中形成了一种用于 PPD 检测的良好催化材料 SrCoPO（SCP）。与母体 SC 相比，SCP 的性能得到了改善，这可以归因于三个贡献因素，包括更多的高氧化性氧物种 O/O、更好的导电性以及 SCP 中 P-氧键上更多的活性位点。此外，我们的工作提出了 SCP/GCE（玻璃碳电极）传感器中晶格氧机制（LOM）与晶格 O 空位和吸附 -OO 高度活性物质，用于电催化氧化 PPD。更重要的是，SCP/GCE 传感器在实际发膏染料样品中对 PPD 的测定表现出良好的稳定性、低检测限和高可靠性（误差<5.78%），这表明其在实际应用中有很大的研究潜力。
