Development of multifunctional red-emitting Eu3+ activated BaMoO4 nanophosphors for dual-mode applications in electrochemical sensing and latent fingerprint visualization

IF 5.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2026-03-01 Epub Date: 2025-10-10 DOI:10.1016/j.materresbull.2025.113831

H.S. Yogananda , S.R. Yashodha , Akshay Arjun , R.B. Basavaraj , N.P. Bhagya , G.K. Prashanth , H.S. Lalithamba , C.R. Ravikumar , P.K. Sharanya

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Abstract

The Phosphor Ba_1-xMoO₄:xEu³⁺ (0.00 ≤ x < 0.09) prepared by low-cost solution combustion method were in a space group of I4₁/a and crystalized in tetragonal phase. The intensity of photoluminescence was found to be maximum for the transition ⁵D₀→⁷F₂ (615 nm) at an excitation wavelength of 394 nm with CIE color coordinates (0.6525, 0.3471) making it a potentially useful substance for red phosphor materials. Electrochemical impedance spectroscopy (EIS) research has demonstrated that the decreased charge transfer resistance of Ba_1-xMoO₄:xEu³⁺ (0.00 ≤ x < 0.09) is responsible for their improved behaviour. When lithium was used as an analyte, Ba_1-xMoO₄:xEu³⁺ (0.00 ≤ x < 0.09) demonstrated improved sensitivity in cyclic voltammetry studies at various scan rates. Further, the use of Ba_1-xMoO₄:xEu³⁺ (x = 0.07) powder as a dusting agent in fingerprint applications suggest that nanophosphor-based techniques offer a promising advancement for non-destructive and high-resolution fingerprint imaging across diverse surfaces.

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多功能红发Eu3+活化BaMoO4纳米荧光粉在电化学传感和潜在指纹可视化中的双模应用

低成本溶液燃烧法制备的荧光粉Ba1-xMoO4:xEu3+(0.00≤x < 0.09)处于I41/a的空间群中，呈四方相结晶。在激发波长为394 nm， CIE色坐标为（0.6525,0.3471）时，5D0→7F2 （615 nm）跃迁的光致发光强度最大，使其成为一种潜在的红色荧光粉材料。电化学阻抗谱（EIS）研究表明，Ba1-xMoO4:xEu3+的电荷转移电阻降低（0.00≤x < 0.09）是其性能改善的原因。当使用锂作为分析物时，Ba1-xMoO4:xEu3+(0.00≤x < 0.09)在不同扫描速率下的循环伏安法研究中表现出更高的灵敏度。此外，在指纹应用中使用Ba1-xMoO4:xEu3+ (x = 0.07)粉末作为粉尘剂表明，基于纳米磷光粉的技术为在不同表面上进行无损和高分辨率指纹成像提供了一个有希望的进步。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.