Mondal Sudipta, Ayon Sikder Ashikuzzaman, Islam Md Saiful, Rana Md Shahjalal, Billah Md Muktadir
Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh.
School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA.
Heliyon. 2023 Oct 12;9(10):e20948. doi: 10.1016/j.heliyon.2023.e20948. eCollection 2023 Oct.
Pristine and nitrogen (N) doped zinc oxide (ZnNO, x = 0, 0.005, 0.01, and 0.02) nanoparticles (NPs) were successfully synthesized using chemical co-precipitation approach. The formation of pure crystalline wurtzite ZnO phase without any second phase during N-doping was confirmed by X-ray diffraction (XRD) analysis of N-doped ZnO samples. X-ray photoelectron spectroscopic (XPS) analysis ensured the effective inclusion of nitrogen into ZnO matrix. The morphological analysis revealed the formation of nanorods as a result of N-doping. The optical band gap calculated from UV-vis spectroscopy was observed to decrease up to 1 mol.% N doping followed by a subtle increase. Photoluminescence (PL) spectra revealed that electron-hole recombination was the least for 1 mol.% N doped ZnO NPs. ZnNO NPs showed superior photocatalytic activity among all samples due to rod-shaped NPs and reduced electron-hole recombination, which was accessed by the photodegradation of Rhodamine B (RhB).
采用化学共沉淀法成功合成了纯净的以及氮（N）掺杂的氧化锌（ZnNO，x = 0、0.005、0.01和0.02）纳米颗粒（NPs）。通过对氮掺杂ZnO样品的X射线衍射（XRD）分析，证实了氮掺杂过程中形成了纯结晶纤锌矿ZnO相，没有任何第二相。X射线光电子能谱（XPS）分析确保了氮有效地掺入ZnO基体中。形态分析表明，氮掺杂导致了纳米棒的形成。通过紫外-可见光谱计算得到的光学带隙在氮掺杂量达到1 mol.% 之前下降，随后略有增加。光致发光（PL）光谱表明，对于1 mol.% 氮掺杂的ZnO NPs，电子-空穴复合最少。由于棒状NPs和减少的电子-空穴复合，ZnNO NPs在所有样品中表现出优异的光催化活性，这通过罗丹明B（RhB）的光降解来评估。
