A Two‐dimensional Amorphous Plasmonic Heterostructure of Pd/MoO3‐x for Enhanced Photoelectrochemical Water Splitting Performance. Issue 10 (12th April 2021)

• Record Type: Journal Article
• Authors: Liu, Wei; Tian, Qingyong; Yang, Jian; Zhou, Yannan; Chang, Hongwei; Cui, Wenhui; Xu, Qun
• Is Part Of: Chemistry, an Asian journal. Volume 16:Issue 10(2021)
• Page Start: 1253
• Page End: 1257
• Publication Date: 2021-04-12
• Subjects: molybdenum oxides -- amophous -- metal-support interactions -- heterostructures -- plasmonic; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.202100239
• Languages: English
• ISSNs: 1861-4728

Abstract

Abstract: Two‐dimensional (2D) heterostructures based on localized surface plasmon resonance (LSPR) have a great potential for solar energy harvesting applications. Exploring 2D amorphous plasmonic heterostructures with high light absorption and catalytic activity is desirable yet challenging. Herein, 2D Pd/MoO3‐x amorphous heterostructures can be obtained by immobilizing Pd single atoms in unsaturated coordination sites of amorphous MoO3‐x, because of strong metal‐support interactions, and it reaches a current density of 50 μA cm −2 for photoelectrochemical response with good durability, and exhibits a high incident‐photon‐to‐current‐conversion efficiency (IPCE) of 14.8% at 460 nm. Such an enhanced catalytic effects are contributed to the enhanced light absorption in visible region and change of electronic structure owing to enhanced electron transfer through dominant Pd−O bonds, which facilitate water splitting. This work moves a step closer to the expansion of photovoltaic device with the high conversion efficiency for visible light for amorphous heterostructures. Abstract : We present a two‐dimensional (2D) amorphous plasmonic Pd/MoO3‐x heterostructure by metal‐support interactions, which achieves a current density of 50 μA cm −2 and an incident‐photon‐to‐current‐conversion efficiency (IPCE) of 14.8% for photoelectrochemical (PEC) response because of enhanced light harvesting and interfacial Pd−O bonds for improving electron transfer.