.png){kind=icon}
返回
External-field-driven molecular polarization manipulates reactant interface toward efficient hydrogen evolution
.png){kind=icon}
OA
AI
DOI：10.1007/s40843-023-2480-x.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The reaction interface which governs the electrocatalytic behavior is notoriously hard to understand due to inadequate regulatory and detection methods. By using on-chip microdevices, we employ variable back-gate voltages to generate molecular polarization and thus fine-tune the concentration of hydronium ions (H3O+) in electrochemical double layers for efficient hydrogen evolution. Taking C-60/ MoS2 heterojunction as a prototype, electrical tests reveal that the back-gate promotes the charge transfer from C-60 to MoS2, leading to the polarization of C-60. In situ photoluminescence spectra verify that the polarized C-60 can attract H3O+ to accumulate in the vicinity of MoS2 in the external electric field. Profiting from the back-gated H3O+ enrichment, the hydrogen evolution current is increased by five times at -0.45 V-RHE when a 1.5-V back-gate voltage is applied. The insight into the reaction interface from manipulation to detection can facilitate diverse catalytic reactions.
Keyword:
hydrogen evolution
external electric field
vdW heterojunction
on-chip electrocatalysis
ion accumulation
期刊
IF:
7.4
论文数:
3.6K
被引数:
1.2W
机构
暂无机构信息
引用论文
Gate-Induced Metal-Insulator Transition in MoS2 by Solid Superionic Conductor LaF3.png)
NANO LETTERS
OAAI
NANO LETTERSIF9.1
OAAI分享收藏Dendritic, Transferable, Strictly Monolayer MoS2 Flakes Synthesized on SrTiO3 Single Crystals for Efficient Electrocatalytic ApplicationsACS NANO
ACS NANOIF16
PREAI
分享收藏1T′-MoTe2-Based On-Chip Electrocatalytic Microdevice: A Platform to Unravel Oxidation-Dependent ElectrocatalysisCCS CHEMISTRYOAAI
CCS CHEMISTRYIF9.2
OAAI分享收藏Formation of a Stable p-n Junction in a Liquid-Gated MoS2 Ambipolar Transistor在液栅MoS2双极晶体管中形成稳定的p-n结NANO LETTERS
NANO LETTERSIF9.1
PREAI
分享收藏Electric-field promoted C-C coupling over Cu nanoneedles for CO2 electroreduction to C2 products电场促进Cu纳米针上的c-c耦合，以将CO2电还原为C2产物OAAI
OAAI分享收藏Tailoring the Interfacial Interactions of van der Waals 1T-MoS2/C60 Heterostructures for High-Performance Hydrogen Evolution Reaction Electrocatalysis定制范德华1T-MoS2/C60异质结构的界面相互作用，用于高性能析氢反应电催化
PREAI
分享收藏
查看更多内容