Deep-ultraviolet (DUV) light devices are receiving widely attention due to their potential use in sterilization and water purification, in particularly, during the COVID-19 pandemic. Photoluminescence detectors that demonstrate the existence of DUV light invisible to our eyes are of importance. Herein, we propose a process intensified approach via high-gravity reactive precipitation combined with hydrothermal synthesis for production of Mn²⁺ doped zinc orthogermanate (Zn₂GeO₄: Mn²⁺) nanophosphors for deep-ultraviolet detecting. The rotating packed bed (RPB) was used as the reactor for process intensification of the reactive precipitation and the whole processing time was significantly reduced. The Zn₂GeO₄: Mn²⁺ phosphors show green emission upon ultraviolet or near ultraviolet excitation. In optimized conditions, the products show a sub-microrod morphology with average size of about 200 nm. Under the excitation of 254 nm light, the Zn₂GeO₄: Mn²⁺ nanophosphors exhibit bright green emission at peak wavelength of 535 nm.

深紫外线（DUV）照明设备由于其潜在用途可用于灭菌和水净化，尤其是在COVID-19大流行期间，因此受到广泛关注。能够证明我们的眼睛看不见的DUV光的存在的光致发光检测器非常重要。本文中，我们提出了一种通过高重力反应沉淀与水热合成相结合的工艺强化方法，以生产用于深紫外检测的Mn ²⁺掺杂的高锗酸锌（Zn ₂ GeO ₄：Mn ²⁺）纳米磷光体。旋转填充床（RPB）用作反应器以增强反应性沉淀的过程，并且整个处理时间显着减少。Zn ₂ GeO_图4：Mn ²⁺荧光粉在紫外线或近紫外线激发下显示绿色发射。在最佳条件下，产品显示出亚微棒形态，平均大小约为200 nm。在254 nm光的激发下，Zn ₂ GeO ₄：Mn ²⁺纳米磷光体在535 nm的峰值波长处显示出亮绿色发射。