Time-Lapse Traces of Transformation of CdTe Nanoparticles into Nanowires via Self-Assembly

IF 2.9 4区 工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY Korean Journal of Chemical Engineering Pub Date : 2024-09-25 DOI:10.1007/s11814-024-00267-2
Jeong Won Kang, Insol Jo, Yeungchan Kim, Hyoungbum Kim, Ki-Sub Kim
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Abstract

Nanostructures formed by self-assembly of semiconductor nanoparticles have unique properties that make them useful in various fields. In particular, cadmium telluride is being actively studied in the field of solar cells on the strengths of its long-term stability and low cost. In this study cadmium telluride nanoparticles were synthesized into nanowires in the dark and their evolutionary process was investigated. Thioglycolic acid was selected from among several thiol-based stabilizers. A ratio of 1.4:1 (thioglycolic acid to cadmium ion) was used rather than the traditional 2.4:1 ratio. In this study, nanowires were prepared by self-assembly of nanoparticles and the process of forming straight nanowires was observed. Synthesized nanowires were observed by using a scanning electron microscope and a transmission electron microscope, and the synthesized nanostructures were characterized. The wavelength of photoluminescence was converted from 549.9 nm to 553.3 nm as nanoparticles transformed into nanowires in an aqueous solution. The nanowire solution did not precipitate even after 60 days. The suggested synthetic procedure thus provides a viable pathway for the fabrication of nanomaterials.

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碲化镉纳米颗粒通过自组装转化为纳米线的延时轨迹
由半导体纳米粒子自组装形成的纳米结构具有独特的性能,因此可用于各个领域。特别是碲化镉,由于其长期稳定性和低成本的优势,在太阳能电池领域正被积极研究。本研究将碲化镉纳米粒子在黑暗中合成为纳米线,并对其演化过程进行了研究。从几种硫醇基稳定剂中选择了硫代乙醇酸。巯基乙酸与镉离子的比例为 1.4:1,而不是传统的 2.4:1。本研究通过纳米粒子的自组装制备了纳米线,并观察了纳米线的形成过程。使用扫描电子显微镜和透射电子显微镜观察了合成的纳米线,并对合成的纳米结构进行了表征。当纳米颗粒在水溶液中转变为纳米线时,光致发光波长从 549.9 nm 转变为 553.3 nm。纳米线溶液在 60 天后也没有沉淀。因此,建议的合成程序为制造纳米材料提供了一条可行的途径。
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来源期刊
Korean Journal of Chemical Engineering
Korean Journal of Chemical Engineering 工程技术-工程:化工
CiteScore
4.60
自引率
11.10%
发文量
310
审稿时长
4.7 months
期刊介绍: The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.
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