Affiliation:
1. Applied Research Center at Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue, Newport News, VA 23606, USA
2. Department of Molecular Biology and Chemistry, Christopher Newport University, 1 Avenue of the Arts, Newport News, VA 23606, USA
Abstract
The perpetually fluctuating economic and environmental climate significantly increases the demand for alternative fuel sources. The utilization of hydrogen gas is a viable option for such a fuel source. Hydrogen is one of the most energy-dense known substances; however, it is unfortunately also highly volatile, especially in the diatomic gaseous state most commonly used to store it. The utilization of a hydrogen feedstock material such as sodium borohydride (NaBH4) may prove to mitigate this danger. When NaBH4 reacts with water, hydrogen stored within its chemical structure is released. However, the rate of hydrogen release is slow and thus necessitates a catalyst. Platinum nanoparticles were chosen to act as a catalyst for the reaction, and to prevent them from conglomerating, they were embedded in a backbone of mesoporous carbon material (MCM) derived from a sustainable corn starch source. The nanocomposite (Pt-MCM) was characterized via transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). Pt-MCM underwent catalytic testing, revealing that the catalytic activity of the Pt-MCM composite catalysts increased with increasing quantities of sodium borohydride, lower pH levels, and higher temperatures. The activation energy of the catalyzed reaction was found to be 37.7 kJ mol−1. Reusability experiments showed an initial drop off in hydrogen production after the first trial but subsequent stability. This Pt-MCM catalyst’s competitive activation energy and sustainable MCM backbone derived from readily available corn starch make it a promising option for optimizing the hydrogen generation reaction of NaBH4.
Reference45 articles.
1. Allister, D. (2019). The Heat Is On: Taking Stock of Global Climate Ambition, UNDP. Available online: https://unfccc.int/sites/default/files/resource/NDC%20Outlook.pdf.
2. Veziroglu, T.N. (2007). 21st Century’s Energy: Hydrogen Energy System. Assessment of Hydrogen Energy for Sustainable Development, Springer.
3. Rivkin, C., Burgess, R., and Buttner, W. (2015). Hydrogen Technologies Safety Guide, National Renewable Energy Lab.
4. Recent progress in electrode fabrication for electrocatalytic hydrogen evolution reaction: A mini review;Yang;Chem. Eng. J.,2020
5. Designing single-atom catalysts toward improved alkaline hydrogen evolution reaction;Abdelghafar;Mater. Rep. Energy,2022
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献