超纯ZnO纳米线的同时热制备及从废碱性电池中回收纯MnO

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

Ceramics International Pub Date : 2025-05-01 DOI:10.1016/j.ceramint.2025.01.533

Pravas Ranjan Behera , Rifat Farzana , Veena Sahajwalla

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引用次数: 0

摘要

采用实验室规模的热处理技术，在恒定Ar气氛和1atm压力下，在不同停留时间（1 ~ 3 h）温度变化（850 ~ 950℃）下，同时制备100%纯氧化锌纳米线和回收纯氧化锰催化剂。通过扫描电镜（SEM）和透射电镜（TEM）分析了不同实验参数下所得产物的结构和形貌变化。经XRD、XPS和EDS分析证实，在950℃、1 h下得到的氧化锌纳米线在结构和形貌上一致，纯度也较高。在850 ~ 950℃下，通过透射电镜观察得到的氧化锌纳米线的平均直径在~ 82 ~ ~ 127 nm之间，随着温度/时间的增加，形貌发生了变化。得到了ZnO纳米线的光致发光光谱，在紫外和可见光范围内分别显示出两个发射波段。该热研究过程为回收废碱性电池提供了一条途径，既可以回收MnO和ZnO，又可以减少垃圾填埋场和环境的负担。

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Simultaneous thermal preparation of ultra-pure ZnO nano-wires and recovery of pure MnO from waste alkaline batteries

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Simultaneous thermal preparation of ultra-pure ZnO nano-wires and recovery of pure MnO from waste alkaline batteries

A simultaneous preparation of 100 % pure zinc oxide nano-wires and recovery of pure manganese oxide catalysts from waste alkaline batteries was studied by a laboratory scale thermal processing technique with temperature variation (850–950 °C) at various residence times (1–3 h) under a constant Ar atmosphere and 1 atm pressure. The change in structure and morphology of the products obtained at different experimental parameters were analysed through SEM and TEM analysis. The zinc oxide nano-wires obtained at 950 °C, 1 h showed consistency in structure and morphology and also purity as confirmed by XRD, XPS, and EDS results. The obtained zinc oxide nano-wires at 850–950 °C showed a variance in the average diameter from ∼82 to ∼127 nm as observed under TEM with an observed morphological change with increase in temperature/time. Photoluminescence spectra was obtained for ZnO nano-wires which showed two emission bands in UV range and visible range respectively. This thermal investigation process exhibits a roadway to recycle waste alkaline batteries by recovering MnO and ZnO while reducing the burden on landfills and environment alike.

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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.