引用本文:赵绪, 秦双莉, 蒋毓文.溶胶凝胶自燃烧法合成ZnS纳米颗粒及粒径控制[J].西南大学学报(自然科学版),2018,40(11):86~93
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 36次   下载 29 本文二维码信息
码上扫一扫!
分享到: 微信 更多
溶胶凝胶自燃烧法合成ZnS纳米颗粒及粒径控制
赵绪, 秦双莉, 蒋毓文
西南大学 物理科学与技术学院, 重庆 400715
摘要:
以硝酸锌、硫脲、乙二醇以及氨基乙酸等为原料,运用溶胶凝胶自燃烧法合成了尺寸和形貌均一性较好的ZnS多晶纳米颗粒.经X射线衍射仪、扫描电子显微镜、紫外-可见分光光度计等表征发现合成的ZnS纳米颗粒具有闪锌矿结构,其平均粒径为160 nm且每个纳米颗粒均由约10 nm的晶粒组成,且样品具有良好的光吸收性能,其能带带隙为3.46 eV.还详细研究了前驱物中组分比例对ZnS纳米颗粒粒径分布的具体影响.研究表明前驱物中n(乙二醇)/n(氨基乙酸)是影响ZnS纳米颗粒粒径分布的主要因素.这一研究结果提供了一种基于自燃烧法的可靠的ZnS纳米颗粒合成工艺,并且实现了利用n(乙二醇)/n(氨基乙酸)独立优化纳米颗粒粒径均一性,有利于基于此工艺的功能材料设计和光电性能优化.
关键词:  溶胶凝胶自燃烧法  硫化锌纳米颗粒  半导体  粒径分布
DOI:10.13718/j.cnki.xdzk.2018.11.013
分类号:O614.24
基金项目:国家自然科学基金青年项目(21101128);中央高校基本科研业务费专项资金资助项目(XDJK2014C083).
Size Distribution Control of ZnS Nanoparticles Synthesized with the Sol-Gel Auto-combustion Method
ZHAO Xu, QIN Shuang-li, JIANG Yu-wen
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Abstract:
Porous ZnS nanoparticles with narrow size distribution and regular shape were synthesized with the sol-gel auto-combustion method, using zinc nitrate, thiourea, ethylene glycol and glycine as the precursors. The structure, morphology and optical properties of the products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and ultraviolet-visible spectroscopy (UV-Vis). The synthesized ZnS nanoparticles manifested a sphalerite structure and a band gap of 3.46 eV. The average diameter of the nanoparticles was 160 nm, and each nanoparticle consisted of crystallites about 10 nm in size. Further, we studied the influence of the component ratio in the precursors on particle size distribution of ZnS nanoparticles, and found that ethylene glycol/glycine ratio in the precursors was the main factor affecting the particle size distribution of ZnS nanoparticles. In this work, a reliable synthesis routine for ZnS nanoparticles was proposed, and narrow size distribution was achieved with adjustment of ethylene glycol/glycine ratio in the precursors, which is expected to be beneficial to the performance optimization of functional materials synthesized with the sol-gel autocombustion method.
Key words:  sol-gel autocombustion  zinc sulfide nanoparticle  semiconductor  size distribution
手机扫一扫看