Pd nanoparticles were deposited on MWCNT support for the first time at 80 ℃ and under 2500 psi scCO₂ conditions via a bipyridyl precursor in the absence co-solvent. After deposition, the samples were heated under different atmospheres. Then their morphological and hydrogen uptake capacities were investigated. An average particle size between 7−9 nm was estimated via HR-TEM images while intense Pd(111) and Pd(200) sites were detected for all heated samples except no thermally treated one which exhibits PdH_x sites. The highest hydrogen adsorption at room temperature was recorded for the samples heated under oxygen. At room temperature, Pd loading amount was found to be effective in means of captured hydrogen. Hence, at higher temperatures, hydrogen uptake of samples treated under nitrogen atmosphere was higher. Additionally, in case of the sample which was not thermally treated, a signal referring to hydrogen release between 200−300 °C during reduction was detected.

在不存在助溶剂的情况下，通过联吡啶前体在80℃和2500 psi scCO ₂条件下将Pd纳米颗粒首次沉积在MWCNT载体上。沉积后，将样品在不同的气氛下加热。然后研究了它们的形态和氢吸收能力。通过HR-TEM图像估算了7-9 nm之间的平均粒径，同时对所有加热的样品检测到了强烈的Pd（111）和Pd（200）部位，除了没有热处理的样品显示出PdH _x网站。记录了在氧气下加热的样品在室温下的最高氢吸附量。发现在室温下，Pd的负载量对于捕获的氢是有效的。因此，在较高温度下，在氮气氛下处理的样品的氢吸收较高。另外，如果样品未经热处理，则检测到一个信号，该信号涉及还原过程中200-300°C之间的氢释放。