Meguerdichian Andrew G, Jafari Tahereh, Shakil Md R, Miao Ran, Achola Laura A, Macharia John, Shirazi-Amin Alireza, Suib Steven L
Institute of Materials Science, University of Connecticut , U-3136, 97 N. Eagleville Road, Storrs, Connecticut 06269, United States.
Department of Chemistry, University of Connecticut , U-3060, 55 N. Eagleville Road, Storrs, Connecticut 06269, United States.
Inorg Chem. 2018 Feb 19;57(4):1815-1823. doi: 10.1021/acs.inorgchem.7b02658. Epub 2018 Feb 7.
Electrocatalytic decomposition of urea for the production of hydrogen, H for clean energy applications, such as in fuel cells, has several potential advantages such as reducing carbon emissions in the energy sector and environmental applications to remove urea from animal and human waste facilities. The study and development of new catalyst materials containing nickel metal, the active site for urea decomposition, is a critical aspect of research in inorganic and materials chemistry. We report the synthesis and application of [NH]NiPO·6HO and β-NiPO using in situ prepared [NH]HPO. The [NH]NiPO·6HO is calcined at varying temperatures and tested for electrocatalytic decomposition of urea. Our results indicate that [NH]NiPO·6HO calcined at 300 °C with an amorphous crystal structure and, for the first time applied for urea electrocatalytic decomposition, had the greatest reported electroactive surface area (ESA) of 142 cm/mg and an onset potential of 0.33 V (SCE) and was stable over a 24-h test period.
用于生产氢气（H）的尿素电催化分解，可用于清洁能源应用，如燃料电池，具有若干潜在优势，例如在能源领域减少碳排放以及在环境应用中从动物和人类粪便处理设施中去除尿素。含有镍金属（尿素分解的活性位点）的新型催化剂材料的研究与开发，是无机和材料化学研究的关键方面。我们报道了使用原位制备的[NH]HPO合成并应用[NH]NiPO·6HO和β-NiPO。[NH]NiPO·6HO在不同温度下煅烧，并测试其对尿素的电催化分解性能。我们的结果表明，在300°C煅烧的具有非晶晶体结构的[NH]NiPO·6HO，首次应用于尿素电催化分解，具有报道的最大电活性表面积（ESA）142 cm/mg，起始电位为0.33 V（SCE），并且在24小时测试期内稳定。
