A PtTe2 surface with under-coordinated Pt at Te vacancies can serve as a superior catalyst for methanol decomposition. The decomposition ultimately produces gaseous hydrogen, formaldehyde, methane and water.
Methanol decomposition on the surface of layered PtTe2
Nature Communications 15 (2024) 653
Jing-Wen Hsueh, Lai-Hsiang Kuo, Po-Han Chen, Wan-Hsin Chen, Chi-Yao Chuang, Chia-Nung Kuo, Chin-Shan Lue, Yu-Ling Lai, Bo-Hong Liu, Chia-Hsin Wang, Yao-Jane Hsu, Chun-Liang Lin,* Jyh-Pin Chou* and Meng-Fan Luo*
Investigating the role of undercoordinated Pt sites at the surface of layered PtTe2 for methanol decomposition
TMD二維材料因為它的二維結構能夠提供最大反應表面積卻使用最少的材料。我們發現吸附在PtTe2表面Te空缺裏低配位Pt位置上的甲醇有超過90%的反應機率。這特別的反應能力起源於低配位Pt的三角形分布與部分氧化。
Transition metal dichalcogenides, by virtue of their two-dimensional structures, could provide the largest active surface for reactions with minimal materials consumed. We show a reaction probability > 90 % for adsorbed methanol (CH3OH) on under-coordinated Pt sites at surface Te vacancies on layered PtTe2. The characteristic reactivity is attributed to both the triangular positioning and varied degrees of oxidation of the under-coordinated Pt at Te vacancies.