کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1487188 1510702 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Facile one-pot synthesis and characterization of nickel supported on hierarchically porous carbon
ترجمه فارسی عنوان
سنتز یک تکه ای و خصوصیات نیکل بر روی کربن متخلخل سلسله مراتبی پشتیبانی می شود
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• Novel, inexpensive, one-pot, synthesis method for Ni on hierarchically porous carbon.
• Disappearance of surfactant mesopores seen with incorporation of nickel.
• Distribution of Ni nanoparticles on the hierarchically porous carbon support was studied by SEM.
• Nickel nanoparticles were dispersed on macropore walls and not within carbon.

Described is a novel, facile route for the synthesis of nickel supported on hierarchically porous carbon (Ni/HPC) using a one-pot co-gelation sol–gel method. Ni/HPC with varying nickel loadings (0.5, 1, 2.5 and 5 wt% Ni) were synthesized and the materials characterized by nitrogen physisorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) and Raman spectroscopies. The results show a three-dimensional network of disordered carbon with fine nickel nanoparticles of sizes ranging from 8 nm to 13 nm at 0.5 wt% Ni loading which gradually increased with increase in the Ni loading. The carbon structure was retained at the macropore level, but not at the mesoscale where the ordered mesopores were lost on nickel addition. The nickel nanoparticles were observed to grow on the surface of the ligaments. This may make them particularly suitable for low pressure Ni-catalyzed organic transformations e.g., hydrogenations, C–C coupling, C-heteroatom coupling, etc.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 73, January 2016, Pages 204–210
نویسندگان
, , ,