On the electronic structure and hydrogen evolution reaction activity of platinum group metal-based high-entropy-alloy nanoparticles.

Chemical Science
Dongshuang WuHiroshi Kitagawa

Abstract

We report the synthesis of high-entropy-alloy (HEA) nanoparticles (NPs) consisting of five platinum group metals (Ru, Rh, Pd, Ir and Pt) through a facile one-pot polyol process. We investigated the electronic structure of HEA NPs using hard X-ray photoelectron spectroscopy, which is the first direct observation of the electronic structure of HEA NPs. Significantly, the HEA NPs possessed a broad valence band spectrum without any obvious peaks. This implies that the HEA NPs have random atomic configurations leading to a variety of local electronic structures. We examined the hydrogen evolution reaction (HER) and observed a remarkably high HER activity on HEA NPs. At an overpotential of 25 mV, the turnover frequencies of HEA NPs were 9.5 and 7.8 times higher than those of a commercial Pt catalyst in 0.05 M H2SO4 and 1.0 M KOH electrolytes, respectively. Moreover, the HEA NPs showed almost no loss during a cycling test and were much more stable than the commercial Pt catalyst. Our findings on HEA NPs may provide a new paradigm for the design of catalysts.

References

May 28, 2005·The Journal of Chemical Physics·Bongjin Simon MunPhilip N Ross
Mar 25, 2006·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Jeff GreeleyDieter M Kolb
Feb 13, 2015·Chemical Society Reviews·Yan JiaoShi Zhang Qiao
Jun 25, 2016·Science·Peng-Cheng ChenChad A Mirkin
Feb 14, 2017·Nature Nanotechnology·Javeed MahmoodJong-Beom Baek
Mar 31, 2018·Science·Yonggang YaoLiangbing Hu
Jun 9, 2018·Scientific Reports·M Y RekhaChandan Srivastava
Sep 7, 2019·Nature Communications·Pengfei XieChao Wang
Mar 12, 2020·Proceedings of the National Academy of Sciences of the United States of America·Yonggang YaoLiangbing Hu
Aug 14, 2020·Journal of the American Chemical Society·Dongshuang WuHiroshi Kitagawa

❮ Previous
Next ❯

Citations

Mar 16, 2021·IScience·Maosen FuDong Su
May 14, 2021·Science Advances·Yifan Sun, Sheng Dai
May 15, 2021·ACS Applied Materials & Interfaces·Akhil TayalOsami Sakata
Aug 27, 2021·Angewandte Chemie·Tobias LöfflerWolfgang Schuhmann
Nov 24, 2021·Materials Horizons·Kohei Kusada, Hiroshi Kitagawa

❮ Previous
Next ❯

Methods Mentioned

BETA
X-ray
transmission

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy
Yifan ChenSara E Skrabalak
BMJ : British Medical Journal
T Delamothe
© 2021 Meta ULC. All rights reserved