新型cuo改性Li2Pb1-xCuxP2O7玻璃体系的结构、热、光学和结晶性能研究

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-06-11 DOI:10.1016/j.jnoncrysol.2025.123673

F. Faqyr , A. El Boukili , L. Boudad , A. Zourif , E.H. El Herradi , T. Guedira , M. Taibi

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引用次数: 0

摘要

研究了新型Li2Pb1-xCuxP2O7 （0 mol %≤x≤1 mol %）玻璃体系的结构、热、光学和结晶行为，其中CuO逐渐取代PbO。样品采用传统的熔融淬火法合成。x射线衍射（XRD）分析证实，当成分高达x = 0.8 mol %时，玻璃具有非晶态性质，在较高的CuO含量下发生结晶，导致铜基结晶相。密度和摩尔体积测量显示，随着CuO含量的增加，这两个参数都减少，表明玻璃网络内的填充更松散。差示扫描量热法（DSC）研究表明，用CuO取代PbO降低了玻璃化转变温度（Tg）和结晶起始温度（Tx），表明玻璃结构发生了变化，柔韧性增加。所得结果表明，在CuO掺杂的情况下，其稳定性并不一致地遵循单一模式。LiPb0.6Cu0,4P2O7玻璃具有最高的稳定性。傅里叶变换红外（FTIR）光谱进一步强调了磷酸盐网络的渐进式结构变化，由于Cu2+取代导致吸收带的变化影响了键角和网络连接。紫外可见吸收光谱和Tauc图分析揭示了Li2Pb1-xCuxP2O7玻璃体系中CuO含量与光学性能之间的相互作用。制备的玻璃样的光学吸收光谱描述了Cu2+离子的t2g→eg跃迁的吸收带。晶化后的XRD， FTIR和UV-Vis光谱分析显示了非晶相到结晶相的转变。Cu 2 +离子的掺入被认为在重组磷酸盐网络中起着至关重要的作用，显著影响了这些材料的光学性质。

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Investigation of the structural, thermal, optical, and crystallization properties of novel CuO-modified Li2Pb1-xCuxP2O7 glass system

The study investigates the structural, thermal, optical, and crystallization behavior of the novel Li₂Pb_1-xCu_xP₂O₇ (0 mol % ≤ x ≤ 1 mol %) glass system, where CuO progressively replaces PbO. The samples were synthesized through the conventional melt-quenching method. X-ray diffraction (XRD) analysis confirmed the amorphous nature of glasses for compositions up to x = 0.8 mol %, with crystallization occurring at higher CuO contents, leading to copper-based crystalline phases. Density and molar volume measurements reveal a decrease in both parameters as CuO content increases, indicating looser packing within the glass network. Differential Scanning Calorimetry (DSC) studies showed that substituting PbO with CuO decreases the glass transition temperature (T_g) and crystallization onset temperature (T_x), suggesting structural changes and increased flexibility in the glass structure. The obtained results reveal that the stability does not consistently follow a single pattern with CuO doping. Notably, the LiPb_0.6Cu_0,4P₂O₇ glass exhibits the highest stability. Fourier Transform Infrared (FTIR) spectroscopy further highlighted progressive structural changes in the phosphate network, with shifts in absorption bands attributed to Cu²⁺ substitution affecting bond angles and network connectivity. The UV–Vis absorption spectra and Tauc plot analysis revealed the interplay between the CuO content and the optical properties in the Li₂Pb_1-xCu_xP₂O₇ glass system. The optical absorption spectra of the prepared glassy samples depict absorption bands attributed to the t_2g→e_g transition of the Cu²⁺ions. Post-crystallization analysis using XRD, FTIR, and UV–Vis spectroscopy revealed a transition from amorphous to crystalline phases. The incorporation of Cu²⁺ ions was assessed to play a crucial role in restructuring the phosphate network, significantly impacting the optical properties of these materials.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.