The Regularities of the Synthesis of Zinc Oxide Nanoparticles in an Aqueous Medium by Laser Ablation

IF 0.3 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
I. N. Lapin, E. A. Gavrilenko, V. A. Svetlichnyi, A. I. Mamaev
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引用次数: 0

Abstract

The mechanism of transition of colloidal nanoparticles of metallic zinc obtained by pulsed laser ablation (PLA) of a metal target in liquid with different pH into zinc oxide directly during PLA and their storage has been considered. It is shown that the rate of oxidation of metallic zinc particles in solution depends on the rate of two partial electrochemical reactions interconnected by the electron balance, namely, the rate of formation of the ionized form of zinc and the ionization discharge of oxygen dissolved in water. It has been revealed that the rate of oxygen delivery through the Prandtl boundary layer is the limiting stage of the zinc oxide phase formation process. As well, a number of powder samples are obtained using the PLA of metallic zinc in weakly acidic, neutral, and alkaline aqueous media and drying of the resulting colloidal solutions; their composition has been analyzed. According to X-ray phase analysis, exposure to atmospheric oxygen leads to significant further oxidation of the obtained powders; however, a metallic phase was detected in the sample after PLA in an alkaline medium. Thus, varying the conditions of the PLA provides wide opportunities for obtaining a final product with a specific composition and properties.

Abstract Image

激光烧蚀在水介质中合成氧化锌纳米颗粒的规律
研究了脉冲激光烧蚀金属靶在不同pH液体中制备的金属锌胶体纳米颗粒在激光烧蚀过程中直接向氧化锌转变的机理。结果表明,溶液中金属锌粒子的氧化速率取决于由电子平衡相互联系的两个部分电化学反应的速率,即锌的电离形式的形成速率和溶解在水中的氧的电离排放速率。结果表明,通过普朗特边界层的氧传递速率是氧化锌相形成过程的限制阶段。同样,在弱酸性、中性和碱性水介质中使用金属锌的聚乳酸,并将所得到的胶体溶液干燥,获得了许多粉末样品;对它们的成分进行了分析。根据x射线相分析,暴露于大气中的氧气会导致所得粉末的进一步氧化;然而,在碱性介质中PLA后的样品中检测到金属相。因此,改变PLA的条件为获得具有特定成分和性能的最终产品提供了广泛的机会。
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来源期刊
Inorganic Materials: Applied Research
Inorganic Materials: Applied Research Engineering-Engineering (all)
CiteScore
0.90
自引率
0.00%
发文量
199
期刊介绍: Inorganic Materials: Applied Research  contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya  and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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