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在Cu⁺-Na⁺离子交换玻璃中使用2MeV能量质子的铜纳米粒子和点缺陷形成

Safa Toumi¹, Alaa Adawy^2,3, Alberto Quaranta⁴

¹Laboratory of Physico-Chemistry of Materials (LPCM), Physics Department, Faculty of Sciences of Monastir, University of Monastir, Tunisia. safa.toumi@fsm.rnu.tn.

Dalton transactions (Cambridge, England : 2003)

|May 21, 2024

概括

铜合玻璃酸盐的质子辐射诱导铜纳米粒子的形成,并改变光学特性. 这个过程受到辐射剂量的影响,影响光发光和缺陷中心.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
纳米技术纳米技术

背景情况:

质子辐射为材料合成和化合物形成提供了新的方法.
离子交换 (IE) 处理用于将特定的离子引入玻璃矩阵.
用铜合的玻璃酸盐具有有趣的光学和结构性质.

研究的目的:

为了研究2MeV质子辐射对Cu+-Na+离子交换玻璃酸盐的影响.
分析不同质子剂量引起的光学和结构性质的变化.
在照射玻璃中描述铜纳米颗粒 (CuNPs) 的形成和特性.

主要方法:

商业玻璃酸盐的Cu+-Na+离子交换处理在600°C.
离子交换样品的质子辐射 (p+) 剂量为3.3 × 10^3 Gy至3.6 × 10^5 Gy.
使用紫外线可见吸收,光发光 (PL),电子磁共振 (EPR) 和传输电子显微镜 (TEM/HRTEM) 的表征.

主要成果:

质子辐射诱导了光学和结构性质的显著变化.
紫外线可见光谱显示了CuNP,NBOHC和STH缺陷的表面等离子体共振 (SPR) 带.
光发光强度随着辐射剂量的增加而增加,这是由于Cu2+转化为Cu+的结果,EPR证实了这一点.
证实了TEM/HRTEM的晶体CuNP,平均尺寸为12.39nm.

结论:

质子辐射是一种在离子交换玻璃酸盐中合成铜纳米粒子的有效方法.
包括光发光在内的光学特性可以通过控制质子辐射剂量来调整.
这项研究证明了质子辐射对改变玻璃性能和制造纳米材料的潜力.

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