Hierarchically porous Au nanostructures with interconnected channels for efficient mass transport in electrocatalytic CO2 reduction

Proceedings of the National Academy of Sciences of the United States of America
Gayea HyunSeokwoo Jeon

Abstract

Electrocatalytic CO2 reduction is a promising way to provide renewable energy from gaseous CO2 The development of nanostructures improves energy efficiency and selectivity for value-added chemicals, but complex nanostructures limit the CO2 conversion rates due to poor mass transport during vigorous electrolysis. Herein, we propose a three-dimensional (3D) hierarchically porous Au comprising interconnected macroporous channels (200-300 nm) and nanopores (∼10 nm) fabricated via proximity-field nanopatterning. The interconnected macropores and nanopores enable efficient mass transport and large active areas, respectively. The roles of each pore network are investigated using reliable 3D nanostructures possessing controlled pore distribution and size. The hierarchical nanostructured electrodes show a high CO selectivity of 85.8% at a low overpotential of 0.264 V and efficient mass activity that is maximum 3.96 times higher than that of dealloyed nanoporous Au. Hence, the systematic model study shows the proposed hierarchical nanostructures have important value in increasing the efficiency of expensive Au.

References

Aug 18, 2004·Proceedings of the National Academy of Sciences of the United States of America·Seokwoo JeonJohn A Rogers
Jun 28, 2012·Nature Communications·Junyong ParkSeokwoo Jeon
Jul 18, 2012·ACS Applied Materials & Interfaces·Weon-Sik ChaePaul V Braun
Aug 14, 2012·Nature Materials·Takeshi FujitaMingwei Chen
Nov 23, 2012·Journal of the American Chemical Society·Yihong ChenMatthew W Kanan
Oct 26, 2013·Journal of the American Chemical Society·Wenlei ZhuShouheng Sun
Jan 31, 2014·Nature Communications·Qi LuFeng Jiao
Oct 18, 2014·Journal of the American Chemical Society·Hemma MistryBeatriz Roldan Cuenya
Apr 4, 2015·Journal of the American Chemical Society·Xiaofeng FengMatthew W Kanan
Sep 10, 2015·Nano Letters·David RacitiChao Wang
Nov 5, 2015·Journal of the American Chemical Society·Anthony Shoji HallYogesh Surendranath
Oct 14, 2016·Nano Letters·Tina Saberi SafaeiEdward H Sargent
Nov 20, 2016·Angewandte Chemie·Youngmin YoonYogesh Surendranath
Apr 30, 2017·ACS Applied Materials & Interfaces·Donghwi ChoSeokwoo Jeon
May 23, 2017·Nature Communications·Xinyan LiuJens K Nørskov

❮ Previous
Next ❯

Citations

Jul 16, 2020·Advanced Materials·Hui ChenXiaoxin Zou
Feb 25, 2021·Chemical Society Reviews·Genxiang WangLiming Dai
Mar 16, 2021·ACS Applied Materials & Interfaces·Min WangJames H Pikul
Mar 23, 2021·Small·Dennis MüllerNadja C Bigall
Aug 10, 2021·ACS Applied Materials & Interfaces·Sasho StojkovikjMatthew T Mayer
Sep 15, 2021·ACS Applied Materials & Interfaces·Wen-Yuan YanLin Liu

❮ Previous
Next ❯

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.