Sheikh Faheem A, Macossay Javier, Kanjwal Muzafar A, Abdal-Hay Abdalla, Tantry Mudasir A, Kim Hern
Department of Chemistry, University of Texas-Pan American, Edinburg, TX 78539, USA.
DTU Food, Technical University of Denmark, Soltofts Plads, Building 227 2800 Kgs. Lyngby, Denmark.
ISRN Nanomater. 2012 Oct 12;2012. doi: 10.5402/2012/816474.
The present study reports on the introduction of various nanocatalysts containing nickel (Ni) nanoparticles (NPs) embedded within TiO nanofibers and TiO microparticles. Typically, a sol-gel consisting of titanium isopropoxide and Ni NPs was prepared to produce TiO nanofibers by the electrospinning process. Similarly, TiO microparticles containing Ni were prepared using a sol-gel syntheses process. The resultant structures were studied by SEM analyses, which confirmed well-obtained nanofibers and microparticles. Further, the XRD results demonstrated the crystalline feature of both TiO and Ni in the obtained composites. Internal morphology of prepared nanofibers and microparticles containing Ni NPs was characterized by TEM, which demonstrated characteristic structures with good dispersion of Ni NPs. In addition, the prepared structures were studied as a model for hydrogen production applications. The catalytic activity of the prepared materials was studied by in situ hydrolysis of NaBH, which indicated that the nanofibers containing Ni NPs can lead to produce higher amounts of hydrogen when compared to other microparticles, also reported in this paper. Overall, these results confirm the potential use of these materials in hydrogen production systems.
本研究报告了在TiO纳米纤维和TiO微粒中引入各种含有镍（Ni）纳米颗粒（NPs）的纳米催化剂的情况。通常，通过静电纺丝工艺制备由异丙醇钛和Ni NPs组成的溶胶-凝胶以生产TiO纳米纤维。同样，使用溶胶-凝胶合成工艺制备含Ni的TiO微粒。通过扫描电子显微镜（SEM）分析对所得结构进行了研究，证实了纳米纤维和微粒的良好制备。此外，X射线衍射（XRD）结果表明所得复合材料中TiO和Ni的晶体特征。通过透射电子显微镜（TEM）对制备的含Ni NPs的纳米纤维和微粒的内部形态进行了表征，其显示出Ni NPs具有良好分散性的特征结构。此外，将制备的结构作为制氢应用的模型进行了研究。通过NaBH的原位水解研究了所制备材料的催化活性，结果表明，与本文报道的其他微粒相比，含Ni NPs的纳米纤维能产生更多的氢气。总体而言，这些结果证实了这些材料在制氢系统中的潜在用途。
