کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6617756 | 459635 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Specific and mass activity of silver nanocube and nanoparticle-based catalysts for electroless copper deposition
ترجمه فارسی عنوان
فعالیت خاص و جرمی نانوکابو نقره و کاتالیزورهای مبتنی بر نانوذرات برای رسوبگذاری فلزات نیتروژن
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کلمات کلیدی
سطح الکتروشیمیایی، سطح واقعی زمین، فعال کننده، رسوب نورد الکترولیس،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Catalytic activity normalised with respect to mass and electrochemical surface areas (ESA) are used herein to estimate the mass activity and specific activity, respectively, of Ag nanomaterials for catalysing electroless copper deposition (ECD). The activities and resulting average deposition rates were compared for Ag nanocubes enclosed by (1 0 0) planes and Ag nanoparticles. On the basis of mass evaluation and deposition kinetics measured using a quartz crystal microbalance (QCM), the mean mass activities of nanocubes and nanoparticles are determined to be 1.228 and 1.923, respectively. The Ag nanocubes show weaker mass activity and smaller ESA than do Ag nanoparticles. The resulting average deposition rates in terms of mass activity are 3.5 x 10â3 sâ1 and 5.5 x 10â3 sâ1 for nanocubes and nanoparticles, respectively. In contrast, a careful comparison of specific activity demonstrates that the Ag nanocubes show a better activity (5.4 x 10â2 mg cmâ2) than do Ag nanoparticles (4 x 10â2 mg cmâ2). The average deposition rates in terms of specific activity are 1.54 x 10â4 mg cmâ2 sâ1 and 1.16 x 10â4 mg cmâ2 sâ1 for nanocubes and nanoparticles, respectively; thus, nanocubes enable faster ECD. Similarly, in the Tafel plot normalised to the ESA, the specific current density corresponding to nanocubes were found to be higher than that in the case of nanoparticles for formaldehyde oxidation. The QCM and Tafel results demonstrate that the (1 0 0) planes in Ag nanocubes can enhance the catalytic activity of the nanocubes in ECD.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 104, 1 August 2013, Pages 185-190
Journal: Electrochimica Acta - Volume 104, 1 August 2013, Pages 185-190
نویسندگان
Chien-Liang Lee, Yao-Lung Tsai, Chin-Wei Chen,