Abstract Zinc gallate (ZnGa2O4) phosphor was fabricated by the direct precipitation method (DPM) and solid state reaction method (SSRM). The physicochemical and electrochemical properties of ZnGa2O4 phosphor were investigated using X-ray diffractometer (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and cyclic voltammetry (CV). Finally, the prepared ZnGa2O4 electrode was examined for electrochemical luminescence (ECL). The ZnGa2O4 phosphors showed nano-sized particles at about 10 nm for DPM and 75 nm for SSRM. This electrode showed good conductivity in the reducing hydrogen environment and enhanced luminescence efficiency. The ECL emission intensity of the ZnGa2O4 electrode of DPM was 30 times higher than that of SSRM. This electrode exhibited strong green emission peak intensity of ECL at a wavelength of 520 nm from the excitation of 254 nm wavelength. The nano-sized ZnGa2O4 electrode of DPM led to effective quenching in an ECL study. Therefore, it had a good luminescence stability.

中文翻译：

---

电化学发光用镓酸锌荧光粉的制备与表征

摘要 采用直接沉淀法（DPM）和固态反应法（SSRM）制备了镓酸锌（ZnGa2O4）荧光粉。使用 X 射线衍射仪 (XRD)、扫描电子显微镜 (SEM)、能量色散 X 射线光谱 (EDX) 和循环伏安法 (CV) 研究了 ZnGa2O4 荧光粉的理化和电化学性质。最后，对制备的 ZnGa2O4 电极进行电化学发光 (ECL) 检测。ZnGa2O4 磷光体在 DPM 中显示出约 10 nm 和 SSRM 中约 75 nm 的纳米级颗粒。该电极在还原氢环境中表现出良好的导电性并提高了发光效率。DPM 的 ZnGa2O4 电极的 ECL 发射强度比 SSRM 高 30 倍。该电极在 254 nm 波长激发后，在 520 nm 波长处表现出 ECL 的强绿色发射峰强度。DPM 的纳米尺寸 ZnGa2O4 电极导致 ECL 研究中的有效淬火。因此，它具有良好的发光稳定性。