In-situ Preparation of Hexagonal Lead Iodide Nanoflakes at Room Temperature
-
摘要: 室温下，以铅片（Pb）和碘（I2）为主要反应物，通过简单的浸泡方法原位合成了具有正六边形结构的碘化铅（PbI2）纳米片.借用X-射线衍射仪（XRD）和扫描电子显微镜（SEM）对所得的样品进行了表征，并研究了实验条件对产物的影响.结果表明：反应时间、碘（I2）的浓度、反应介质以及反应温度等条件对产物的形貌和尺寸有明显的影响.当I2浓度为0.026 mol/L、反应时间为10 min、温度为25℃时，可以得到厚度约100 nm、宽度约2~3 μm的正六边形PbI2纳米片.Abstract: Lead iodide (PbI2) nanoflakes with hexagonal structure were in-situ synthesized by taking advantage of a simple soak method with lead foil and elemental iodine as the main raw materials at room temperature. The synthesized samples were characterized by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the effects of reaction conditions on the products were studied at the same time. The results showed that the morphologies and dimensions of the as-prepared samples were obviously influenced by the reaction conditions including reaction time, iodine concentration, reaction medium and reaction temperature. The hexagonal PbI2 nanoflakes with the thickness and size about 100 nm and 2~3 μm were obtained when the concentration of I2 was 0.026 mol/L, the reaction time was 10 min and the reaction temperature was 25℃, respectively.
-
Keywords:
- room temperature /
- in-situ synthesis /
- lead iodide
-
-
[1] HE Yi,ZHU Shifu,ZHAO Beijun,et al. Improved growth of PbI2 single crystals[J]. Journal of Crystal Growth,2007,300(2):448-451.
[2] ZHU Gangqiang,LIU Peng,HOJAMBERDIEV M,et al. Controllable synthesis of PbI2 nanocrystals via a surfactant-assisted hydrothermal route[J]. Applied Physics A-MaterialsA Science & Processing,2010,98(2):299-304.
[3] ISMAIL R A,MOUSA A M,KHASHAN K S,et al. Synthesis of PbI2 nanoparticles by laser ablation in methanol[J]. Journal of Materials Science-Materials in Electronics,2016,27(10):10696-10700.
[4] MALEVU T D,OCAYA R O,TSHABALALA K G. Phase transformations of high-purity PbI2 nanoparticles synthesized from lead-acid accumulator anodes[J]. Physica B Condensed Matter,2016,496:69-73.
[5] WANGYANG Peihua,SUN Hui,ZHU Xinghua,et al. Mechanical exfoliation and Raman spectra of ultrathin PbI2 single crystal[J]. Materials Letters,2016,168:68-71.
[6] HE Yi,JIN Yingrong,CHEN Baojun,et al. Growth of PbI2 single crystal by the top seed vertical zone melting method[J]. Crystal Research and Technology,2015,50(11):823-827.
[7] ZHANG Jiye,SONG Tao,ZHANG Zhaojun,et al. Layered ultrathin PbI2 single crystals for high sensitivity flexible photodetectors[J]. Journal of Materials Chemistry C,2015,3(17):4402-4406.
[8] ZHENG Zhi,LIU Airuo,WANG Shumin,et al. In situ growth of epitaxial Lead iodide films composed of hexagonal single crystals[J]. Journal of Materials Chemistry,2005,15(42):4555-4559.
[9] ZHENG Zhi,WANG Shumin,LI Dapeng,et al. Morphology-controlled synthesis of Lead Iodine compounds from Lead foils and Iodine[J]. Journal of Crystal Growth,2007,308(2):398-405.
[10] ZHU Xinghua,WANGYANG P,SUN Hui,et al. Facile growth and characterization of freestanding single crystal PbI2 film[J]. Materials Letters,2016,180:59-62.
[11] YING Chao,SHI Chengwu,WU Ni,et al. A two-layer structured PbI2 thin film for efficient planar perovskite solar cells[J]. Nanoscale,2015,7(28):12092-12095.
[12] SHENG CX,ZHAI Y,OLEJNIK E,et al. Laser action and photoexcitations dynamics in PbI2 films[J]. Optical Materials Express,2015,5(3):530-537.
[13] HUANG Baojun,ZHENG Zhi,HE Qin,et al. Rapid sonochemical preparation of shape-selective Lead iondide[J]. Materials Research Bulletin,2012,47(9):2599-2604.
计量
- 文章访问数: 841
- HTML全文浏览量: 29
- PDF下载量: 9
下载:
