Li Young Feng, Lu Waylon, Chen Kai, Xia Meikun, Jelle Abdinoor, Ozin Geoffrey A
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada.
Chemistry. 2020 Sep 25;26(54):12355-12358. doi: 10.1002/chem.202002975. Epub 2020 Sep 3.
Surface deposition of Ba on Pd/H WO nanowires was developed by using a solution-phase atomic layer deposition process. The procedure involves the generation of Brønsted surface OH sites by H spillover on Pd/WO , which can then hydrolytically condense with Ba(OEt) to produce surface Ba . At just 0.2 at % Ba, CO production by the light-assisted activity of the reverse water-gas shift (RWGS) reaction was observed to increase by about 300 %. In situ DRIFTS studies suggested enhanced CO capturing capabilities of a Ba-decorated surface. This study further exemplifies the importance of surface chemistry in optimizing materials for catalysis.
通过溶液相原子层沉积工艺在钯/氢钨纳米线上实现了钡的表面沉积。该过程包括通过氢在钯/氧化钨上的溢流产生布朗斯特表面羟基位点，然后这些位点可与乙醇钡发生水解缩合反应生成表面钡。仅0.2原子百分比的钡，通过逆水煤气变换（RWGS）反应的光辅助活性产生的一氧化碳产量就增加了约300%。原位漫反射红外傅里叶变换光谱（DRIFTS）研究表明，钡修饰表面的一氧化碳捕获能力增强。这项研究进一步例证了表面化学在优化催化材料方面的重要性。
