For the first time, the author reported the fabrication and characterizations of Co²⁺ doped Zn₂SiO₄ (Co²⁺: Zn₂SiO₄) using the recycled waste white rice husk ash (WRHA) based on empirical formula (Co₃O₄)_1.0[(ZnO)_55.0(WRHA)_45.0]_99.0 and produced by using melt-quenching technique. The precursor glass was heat treated at 700 ℃ until 950 ℃. The X-ray diffraction (XRD) result of Co²⁺: Zn₂SiO₄ showed that β- Zn₂SiO₄ started to form at 750 ℃ and single phase of α-Zn₂SiO₄ remain stable at 950 ℃. The Fourier transform infrared spectroscopy (FTIR) confirmed the formation of Co²⁺: Zn₂SiO₄ by showing eight significant vibrational bands. One triplet absorption band occurred at around 450–700 nm attributed to ⁴A₂ → ⁴T₁ (⁴P) optical transition of Co²⁺ ions that gives blue color towards the Co²⁺: Zn₂SiO₄ sample. Emission spectroscopy of Co²⁺: Zn₂SiO₄ exhibit five different peaks corresponded to blue emission (~416 nm, ~441 nm, ~461 nm and ~481 nm) and green emission (~527 nm) under excitation at 325 nm. Such luminescence properties making Co²⁺: Zn₂SiO₄ as a potential phosphor material especially in providing blue emission supported by the excellent dielectric properties.

作者首次报道了利用可回收_废稻壳^灰（^WRHA _）基于经验_公式（Co _{3 O 4} ) _1.0 [(ZnO) _55.0 (WRHA) _45.0 ] _99.0，采用熔体淬火技术生产。前体玻璃在 700 ℃ 下热处理至 950 ℃。^{Co 2+} : Zn ₂ SiO ₄的X射线衍射(XRD)结果表明β- Zn ₂ SiO ₄750 ℃开始形成单相α-Zn ₂ SiO ₄在950 ℃保持稳定。傅里叶变换红外光谱 (FTIR)通过显示八个显着的振动带证实了 Co ²⁺ : Zn ₂ SiO _{4的形成。}一个三重吸收带出现在 450–700 nm 附近，归因于Co ^2+离子的4 A ₂ → ⁴ T ₁ ( ⁴ P) 光学跃迁，使 Co ²⁺ : Zn ₂ SiO ₄样品呈蓝色。^{Co 2+} : Zn ₂的发射光谱SiO ₄在 325 nm 激发下呈现出五个不同的峰，对应于蓝色发射（~416 nm、~441 nm、~461 nm 和~481 nm）和绿色发射（~527 nm）。这种发光特性使 Co ²⁺ : Zn ₂ SiO ₄成为一种潜在的磷光体材料，特别是在提供由优异介电特性支持的蓝色发射方面。