Umar Ahmad, Kumar Sundararajan Ashok, Rosaline Daniel Rani, Algadi Hassan, Ibrahim Ahmed A, Ahmed Faheem, Foletto Edson Luiz, Inbanathan Savariroyan Stephen Rajkumar
Department of Chemistry, College of Science and Arts, and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia.
Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA.
Micromachines (Basel). 2022 Sep 16;13(9):1528. doi: 10.3390/mi13091528.
Herein, we explore the supercapacitor and photocatalytic applications of poly(1-naphthylamine) (PNA) nanoparticles. The PNA nanoparticles were synthesized by using polymerization of 1-naphthylamine and characterized with several techniques in order to understand the morphological, structural, optical and compositional properties. The structural and morphological properties confirmed the formation of crystalline nanoparticles of PNA. The Fourier-transform infrared (FTIR) spectrum revealed the successful polymerization of 1-naphthylamine monomer to PNA. The absorption peaks that appeared at 236 and 309 nm in the UV−Vis spectrum for PNA nanoparticles represented the π−π* transition. The supercapacitor properties of the prepared PNA nanoparticles were evaluated with cyclic voltammetry (CV) and galvanostatic charge−discharge (GCD) methods at different scan rates and current densities, respectively. The effective series resistance was calculated using electrochemical impedance spectroscopy (EIS), resulting in a minimum resistance value of 1.5 Ω. The highest specific capacitance value of PNA was found to be 255 Fg−1. This electrode also exhibited excellent stability with >93% capacitance retention for 1000 cycles, as measured at 1A g−1. Further, the prepared PNA nanoparticles were used as an effective photocatalyst for the photocatalytic degradation of methylene blue (MB) dye, which exhibited ~61% degradation under UV light irradiation. The observed results revealed that PNA nanoparticles are not only a potential electrode material for supercapacitor applications but also an efficient photocatalyst for the photocatalytic degradation of hazardous and toxic organic dyes.
在此，我们探索聚（1-萘胺）（PNA）纳米粒子的超级电容器和光催化应用。通过1-萘胺的聚合反应合成了PNA纳米粒子，并采用多种技术对其进行表征，以了解其形态、结构、光学和组成性质。结构和形态性质证实了PNA结晶纳米粒子的形成。傅里叶变换红外（FTIR）光谱表明1-萘胺单体成功聚合成PNA。PNA纳米粒子在紫外-可见光谱中236和309nm处出现的吸收峰代表π-π*跃迁。分别采用循环伏安法（CV）和恒电流充放电（GCD）方法在不同扫描速率和电流密度下评估了制备的PNA纳米粒子的超级电容器性能。使用电化学阻抗谱（EIS）计算有效串联电阻，得到的最小电阻值为1.5Ω。发现PNA的最高比电容值为255Fg−1。该电极在1A g−1下测量时，在1000次循环中也表现出优异的稳定性，电容保持率>93%。此外，制备的PNA纳米粒子用作光催化降解亚甲基蓝（MB）染料的有效光催化剂，在紫外光照射下表现出约61%的降解率。观察结果表明PNA纳米粒子不仅是超级电容器应用的潜在电极材料，而且是用于光催化降解有害和有毒有机染料的高效光催化剂。
