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云师大化工学院赵学教授在top期刊《J Colloid Interf Sci》（胶体与界面科学杂志）发表最新研究成果

已有 1205 次阅读 2024-8-4 11:07 |个人分类:云师大研究|系统分类:论文交流

2024年7月30日，Elsevier 旗下top期刊《Journal of Colloid and Interface Science》（影响因子：9.4）在线发表了云南师范大学化学化工学院赵学教授和赵焱教授最新研究成果《Surface crystallized supramolecular to achieve highly dispersed ultrafine nano-palladium in-situ deposition to promote thermal/electrocatalytic reduction》第一作者单位为云南师范大学化学化工学院，硕士研究生白瑞、刘跃龙以及张义成老师为共同第一作者，云南师范大学化学化工学院赵学教授、赵焱教授、浙江海洋大学周英堂教授和武汉大学张海波教授为共同通讯作者。

https://www.sciencedirect.com/science/article/pii/S0021979724017363

1-s2.0-S0021979724017363-ga1_lrg.jpg Abstract

To promote the greening and economization of industrial production, the development of advanced catalyst manufacturing technology with high activity and low cost is an indispensable part. In this study, nitrogen-doped hollow carbon spheres (NHCSs) were used as anchors to construct a supramolecular coating formed by the self-assembly of boron clusters and β-cyclodextrin by surface crystallization strategy, with the help of the weak reducing agent characteristics of boron clusters, highly dispersed ultra-small nano-palladium particles were in-situ embedded on the surface of NHCSs. The deoxygenation hydrogenation of nitroaromatics and the reduction of nitrate to ammonia were used as the representatives of thermal catalytic reduction and electrocatalytic reduction respectively. The excellent properties of the constructed Pd/NHCSs were proved by the probe reaction. In the catalytic hydrogenation of nitroaromatics to aminoaromatics, the reaction kinetic rate and activation energy are at the leading level. At the same time, the constructed Pd/NHCSs can also electrocatalytically reduce nitrate to high value-added ammonia with high activity and selectivity, and the behavior of Pd/NHCSs high selectivity driving nitrate conversion was revealed by density functional theory and in situ attenuated total reflection Fourier transform infrared (ATRFTIR) technique. These results all reflect the feasibility and superiority of in-situ anchoring ultra-small nano-metals as catalysts by surface crystallization to build a supramolecular cladding with reducing properties, which is an effective way to construct high-activity and low-cost advanced catalysts.

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