Exploring the multifunctional aspects of SrBi2-X(CoFe2O4)XNb2O9 nanocomposite materials emphasizing the structural, elastic, and optical properties

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-26 DOI:10.1016/j.ceramint.2024.09.310

Vijaya Lakshmi Garlapati, Nitchal Kiran Jaladi, Nagamani Sangula

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引用次数: 0

Abstract

Nanocomposites of SrBi_(2-X)(CF)_XNb₂O₉ (SBNCF) (CF=CoFe₂O₄ for X = 0.0 to 0.5 with a step increment of 0.1) were synthesized using the hydrothermal method and characterized for their structural, morphological, elastic, and optical properties. The incorporation of CF into SrBi₂Nb₂O₉ (SBN) resulted in hybrid composites with tailored properties. X-ray Diffraction (XRD) with Rietveld refinement analysis confirmed the formation of orthorhombic SBN and spinel CF phases. Field Emission Gun Scanning Electron Microscopy (FEG-SEM) revealed that SBN exhibits a plate-like morphology, with the incorporation of CF into the SBN matrix resulting in both plate-like and octahedral-shaped grains. The Brunauer–Emmett–Teller (BET) method was used to determine the pore radius and surface area, both of which were found to have increased, indicating an enhancement in photocatalytic performance. The presence of the constituent elements in the prepared compositions was confirmed by Energy Dispersive Spectroscopy (EDS). Fourier Transform Infrared Spectroscopy (FTIR) spectra were used to determine elastic properties, suggesting potential applications in electronic noise filtering. From Diffuse Reflectance Spectroscopy (DRS), a recognizable semiconducting behavior and band gap bowing were noticed in SBNCF nanocomposites on the obtained energy band gap values (2.20 eV–1.56 eV) compared to the SBN host matrix (3.16 eV). The materials exhibited strong emission peaks at 470 nm, 528 nm, 584 nm, and 703 nm upon the excitation of 425 nm light using Photoluminescence (PL) spectroscopy. The white emission was predominant at room temperature in all the produced samples and the corresponding color temperature values range from 5865.93 K to 7599.05 K from the CIE diagram. The SBNCF materials are promising candidates in photocatalytic reactions and white light-emitting diodes (w-LEDs) based on their enhanced optical properties.

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探索 SrBi2-X(CoFe2O4)XNb2O9 纳米复合材料的多功能性，强调其结构、弹性和光学特性

采用水热法合成了 SrBi(2-X)(CF)XNb2O9（SBNCF）（CF=CoFe2O4，X = 0.0 至 0.5，阶跃增量为 0.1）纳米复合材料，并对其结构、形态、弹性和光学特性进行了表征。将 CF 添加到 SrBi2Nb2O9（SBN）中可获得具有定制特性的混合复合材料。X 射线衍射 (XRD) 和里特维尔德细化分析证实了正交 SBN 和尖晶石 CF 相的形成。场发射枪扫描电子显微镜（FEG-SEM）显示，SBN 呈板状形态，CF 加入 SBN 基体后形成板状和八面体状晶粒。采用布鲁纳-埃美特-泰勒（BET）法测定了孔隙半径和表面积，发现这两个指标都有所增加，表明光催化性能有所提高。能量色散光谱法（EDS）确认了所制备成分中存在的组成元素。傅立叶变换红外光谱（FTIR）用于确定弹性特性，表明其在电子噪声过滤方面具有潜在的应用价值。扩散反射光谱（DRS）显示，与 SBN 主基体（3.16 eV）相比，SBNCF 纳米复合材料的能带隙值（2.20 eV-1.56 eV）具有明显的半导体特性和带隙弯曲。使用光致发光（PL）光谱，在 425 纳米光的激发下，材料在 470 纳米、528 纳米、584 纳米和 703 纳米处显示出强烈的发射峰。在室温下，所有制备的样品都主要发出白色光，相应的色温值从 CIE 图中的 5865.93 K 到 7599.05 K 不等。基于其增强的光学特性，SBNCF 材料有望用于光催化反应和白光发光二极管（w-LED）。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.