当前位置：
X-MOL 学术
›
ACS Appl. Nano Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Phase-Controlled Synthesis of 2H/3R-MoSe2 Nanosheets on P-Doped Carbon for Synergistic Hydrogen Evolution
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-06-29 , DOI: 10.1021/acsanm.0c00988 Lunfeng Chen 1 , Hanghang Feng 1 , Rui Zhang 1 , Suhang Wang 1 , Xueyan Zhang 1 , Zhijie Wei 1 , Yuanmin Zhu 2 , Meng Gu 2 , Chenyang Zhao 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-06-29 , DOI: 10.1021/acsanm.0c00988 Lunfeng Chen 1 , Hanghang Feng 1 , Rui Zhang 1 , Suhang Wang 1 , Xueyan Zhang 1 , Zhijie Wei 1 , Yuanmin Zhu 2 , Meng Gu 2 , Chenyang Zhao 1
Affiliation
|
The nanoscale structure of catalysts has a profound influence on their physicochemical properties. However, the controlled synthesis of desired highly active microstructures is still challenging. In this work, through the introduction of phytic acid (PA), MoSe2 nanosheets with 2H/3R heterophases are successfully synthesized on a P-doped carbon substrate. Plenty of defects are introduced into the basal plane of MoSe2 with largely expanded interlayer spacings, which increase the number of active sites and enhance the electronic/ionic transport and mass transfer. Benefiting from these structure merits, the obtained heterostructure exhibits superior HER activity and durability. A low overpotential of 164 mV is observed at a current density of 10 mA cm–2 with a Tafel slope of 44 mV dec–1. The HER performance is well maintained even after 10 h tests, showing superior electrochemical robustness. This controlled synthesis 2H/3R heterophased MoSe2 can be extended to other transitional metal chalcogenides (TMDs) for diverse applications.
中文翻译：
P掺杂碳上的相控合成2H / 3R-MoSe 2纳米片用于协同放氢
催化剂的纳米级结构对其物理化学性质有深远的影响。然而，所需的高活性微结构的受控合成仍然具有挑战性。在这项工作中，通过引入植酸（PA），在P掺杂碳衬底上成功合成了具有2H / 3R异相的MoSe 2纳米片。大量的缺陷被引入到MoSe 2的基面中，层间间距大大扩展，这增加了活性位点的数量并增强了电子/离子传输和质量转移。受益于这些结构优点，所获得的异质结构表现出优异的HER活性和耐久性。在10 mA cm –2的电流密度下观察到164 mV的低过电位Tafel斜率为44 mV dec –1。即使经过10小时的测试，HER性能也可以很好地保持，显示出优异的电化学强度。这种受控的合成2H / 3R异相MoSe 2可以扩展到其他过渡金属硫族化物（TMD），以用于各种应用。
更新日期：2020-07-24
中文翻译：
P掺杂碳上的相控合成2H / 3R-MoSe 2纳米片用于协同放氢
催化剂的纳米级结构对其物理化学性质有深远的影响。然而，所需的高活性微结构的受控合成仍然具有挑战性。在这项工作中，通过引入植酸（PA），在P掺杂碳衬底上成功合成了具有2H / 3R异相的MoSe 2纳米片。大量的缺陷被引入到MoSe 2的基面中，层间间距大大扩展，这增加了活性位点的数量并增强了电子/离子传输和质量转移。受益于这些结构优点，所获得的异质结构表现出优异的HER活性和耐久性。在10 mA cm –2的电流密度下观察到164 mV的低过电位Tafel斜率为44 mV dec –1。即使经过10小时的测试，HER性能也可以很好地保持，显示出优异的电化学强度。这种受控的合成2H / 3R异相MoSe 2可以扩展到其他过渡金属硫族化物（TMD），以用于各种应用。
京公网安备 11010802027423号