脉冲激光烧蚀(PLA)法制备硫化汞纳米颗粒薄膜及其表征

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-09-10 DOI:10.22068/IJMSE.17.3.11

Nadheer Jassim Mohammed, H. Dagher

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引用次数: 2

摘要

将朱砂硫化汞(α-HgS)颗粒浸泡在蒸馏水(DW)中，采用脉冲激光烧蚀(PLA)法制备了间朱砂硫化汞(β-HgS)纳米颗粒薄膜。使用1064 nm波长的调q Nd:YAG激光器，重复频率为1 Hz，流畅度为1.5 J/ cm2。通过XRD、AFM、SEM和TEM等测试手段对β-HgS纳米粒子的结构、形态和粒径进行了表征。它们的晶体结构由α-HgS靶材料的六方(纤锌矿)转变为立方(闪锌矿)β-HgS NPs。用紫外可见分光光度计测定了β-HgS NPs的光学性质。小粒子(4 ~ 6.2 nm)的直接带隙为(2.45 eV)，最小粒子(1 ~ 4 nm)的带隙为(3.47 eV)。

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Synthesis and Characterization of Mercuric Sulfide Nanoparticles Thin Films by Pulsed Laser Ablation (PLA) in Distilled Water (DW)

Thin films of meta-cinnabar mercuric sulfide (β-HgS) nanoparticles (NPs) was prepared by pulsed laser ablation (PLA) utilizing a pellet of cinnabar mercuric sulfide (α-HgS) was immersed in distilled water (DW). Q-switched Nd:YAG laser of 1064 nm wavelengths with repetition rate (1 Hz) and fluency (1.5 J/ cm2) applied for ablation. Structural, morphological, and particle sizes of the β-HgS NPs are investigated by analyzing XRD, AFM, SEM, and TEM measurements. Their crystal structure is transformed from hexagonal (wurtzite) of the α-HgS target material to cubic (zinc blende) β-HgS NPs. The optical properties of the β-HgS NPs are measured by UV–visible spectrophotometer. The direct bandgap is calculated to be (2.45 eV) of small particles (4-6.2 nm) moreover, the bandgap value of smallest particles (1-4 nm) is (3.47 eV) according to the optical transmission spectra.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.