引用本文:
喻龙宝, 徐虎, 施亚玉, 张文鹏, 殷恒波, 张雄飞. Schiff碱改性法制备SBA-15型介孔分子筛负载的纳米氧化镍[J]. 应用化学,
2013, 30(10): 1163-1168.
doi:
10.3724/SP.J.1095.2013.20595
Citation: YU Longbao, XU Hu, SHI Yayu, ZHANG Wenpeng, YIN Hengbo, ZHANG Xiongfei. Preparation of NiO Nanoparticles Supported on SBA-15 Mesoporous Molecular Sieve Modified by Schiff Base Monomer[J]. Chinese Journal of Applied Chemistry, 2013, 30(10): 1163-1168. doi: 10.3724/SP.J.1095.2013.20595
Citation: YU Longbao, XU Hu, SHI Yayu, ZHANG Wenpeng, YIN Hengbo, ZHANG Xiongfei. Preparation of NiO Nanoparticles Supported on SBA-15 Mesoporous Molecular Sieve Modified by Schiff Base Monomer[J]. Chinese Journal of Applied Chemistry, 2013, 30(10): 1163-1168. doi: 10.3724/SP.J.1095.2013.20595
Schiff碱改性法制备SBA-15型介孔分子筛负载的纳米氧化镍
摘要:
基于Schiff碱功能单体的改性作用,采用共缩聚方法,制备了SBA-15型介孔分子筛负载的氧化镍纳米粒子。采用小角X射线散射(small angle XRD)、广角X射线衍射(wide angle XRD)、紫外-可见光谱(UV-Vis)、高分辨透射电子显微镜(HRTEM)和N2吸附-脱附测定对制得的样品进行了表征。结果表明,制得的样品具有SBA-15型介孔分子筛典型的二维六方有序结构,NiO纳米粒子主要分布于SBA-15型介孔分子筛的孔道内。当功能单体的含量不超过10%时,SBA-15型介孔分子筛的孔径在6~8 nm范围内;而当功能单体的含量达到15%时,SBA-15型介孔分子筛的孔道被严重堵塞,孔径降为3.8 nm。NiO纳米粒子的尺寸随着功能单体含量的增加而增大。
English
Preparation of NiO Nanoparticles Supported on SBA-15 Mesoporous Molecular Sieve Modified by Schiff Base Monomer
Abstract:
With copolymeric modification by Schiff base monomer,NiO nanoparticles supported on SBA-15 mesoporous molecular sieves were prepared and characterized by powder X-ray diffraction (XRD),UV-Vis spectrometer,high resolution transmission electron microscopy(HRTEM) and N2 adsorption-desorption isotherms. The results show that the as-prepared samples possess a bi-dimensional P6mm hexagonal symmetry of the pores and the formed NiO nanoparticles are mainly dispersed into channels of SBA-15. When the loadings of Schiff base monomer are less than 10%,the pore diameter is in the range of 6~8 nm. Increasing the loading of Schiff base monomer up to 15%,the channels of SBA-15 are severely blocked by encapsulated NiO nanoparticles and the pore diameter is reduced to 3.8 nm. In addition,NiO nanoparticle size increases with increasing Schiff base monomer loading.
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Key words:
- mesoporous molecular sieve
- / Schiff base
- / nickle oxide
- / nanoparticle
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