A Water‐Splitting System with a Cobalt (II,III) Oxide Co‐Catalyst‐Loaded Bismuth Vanadate Photoanode Along with an Organo‐Photocathode

2020 ◽  
Vol 7 (24) ◽  
pp. 5029-5035
Author(s):  
Takahiro Murakami ◽  
Kosuke Ikezoi ◽  
Keiji Nagai ◽  
Hideki Kato ◽  
Toshiyuki Abe
Keyword(s):  
Water Splitting ◽  
Bismuth Vanadate ◽  
Co Catalyst ◽  
Splitting System

scholarly journals Plasmon-induced artificial photosynthesis

2015 ◽  
Vol 5 (3) ◽  
pp. 20140082 ◽  
Author(s):  
Kosei Ueno ◽  
Tomoya Oshikiri ◽  
Xu Shi ◽  
Yuqing Zhong ◽  
Hiroaki Misawa
Keyword(s):  
Gold Nanoparticles ◽  
Water Splitting ◽  
Water Oxidation ◽  
Artificial Photosynthesis ◽  
Oxide Semiconductor ◽  
Single Crystal Substrate ◽  
Co Catalyst ◽  
Crystal Substrate ◽  
Set Up ◽  
Splitting System

We have successfully developed a plasmon-induced artificial photosynthesis system that uses a gold nanoparticle-loaded oxide semiconductor electrode to produce useful chemical energy as hydrogen and ammonia. The most important feature of this system is that both sides of a strontium titanate single-crystal substrate are used without an electrochemical apparatus. Plasmon-induced water splitting occurred even with a minimum chemical bias of 0.23 V owing to the plasmonic effects based on the efficient oxidation of water and the use of platinum as a co-catalyst for reduction. Photocurrent measurements were performed to determine the electron transfer between the gold nanoparticles and the oxide semiconductor. The efficiency of water oxidation was determined through spectroelectrochemical experiments aimed at elucidating the electron density in the gold nanoparticles. A set-up similar to the water-splitting system was used to synthesize ammonia via nitrogen fixation using ruthenium instead of platinum as a co-catalyst.

A selectively decorated Ti-FeOOH co-catalyst for a highly efficient porous hematite-based water splitting system

2016 ◽  
Vol 4 (48) ◽  
pp. 18730-18736 ◽  
Author(s):  
Ki-Yong Yoon ◽  
Hyo-Jin Ahn ◽  
Myung-Jun Kwak ◽  
Sun-I. Kim ◽  
Juhyung Park ◽  
...  
Keyword(s):  
Thin Layer ◽  
Water Splitting ◽  
Photoelectrochemical Cell ◽  
Co Catalyst ◽  
Highly Efficient ◽  
System P ◽  
Splitting System

We report an efficient Ti-doped FeOOH (Ti-FeOOH) co-catalyst applied on SiOx thin layer coated Ti-doped porous Fe2O3 (Ti-PH) to realize an excellent water splitting photoelectrochemical cell.

Plasmon-enhanced light energy conversion using gold nanostructured oxide semiconductor photoelectrodes

2015 ◽  
Vol 87 (6) ◽  
pp. 547-555 ◽  
Author(s):  
Kosei Ueno ◽  
Tomoya Oshikiri ◽  
Kei Murakoshi ◽  
Haruo Inoue ◽  
Hiroaki Misawa
Keyword(s):  
Single Crystal ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxide Semiconductor ◽  
Cathode Side ◽  
Single Crystal Substrate ◽  
Co Catalyst ◽  
Photocurrent Generation ◽  
Light Energy Conversion ◽  
Splitting System

AbstractWe have successfully demonstrated plasmon-enhanced photocurrent generation using gold nanoparticle-loaded titanium dioxide single-crystal (TiO2) photoelectrodes with visible-light irradiation. Water molecules serve as an electron source in photocurrent generation, and oxygen evolution occurs due to water oxidation from a gold nanostructured TiO2 photoelectrode as a half reaction of water splitting. On the basis of this property, the photocurrent generation system was applied to the plasmon-induced water-splitting system using both sides of the same strontium titanate (SrTiO3) single-crystal substrate without an electrochemical apparatus. The chamber on the side of the gold nanoparticles was the anode side, whereas the chamber on the side of the platinum plate was the cathode side. Platinum was used as a co-catalyst for hydrogen evolution. Hydrogen and oxygen were separately evolved from the anode and cathode chambers, respectively. Water splitting was induced with a relatively low chemical bias of 0.23 V due to plasmonic effects based on efficient water oxidation. Similar to the artificial photosynthesis system, we have also demonstrated ammonia formation via nitrogen fixation using ruthenium as a co-catalyst via an analogous setup of the water-splitting system.

scholarly journals Emerging Energy Harvesting Technology for Electro/Photo-Catalytic Water Splitting Application

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 142
Author(s):  
Jianfei Tang ◽  
Tianle Liu ◽  
Sijia Miao ◽  
Yuljae Cho
Keyword(s):  
Energy Harvesting ◽  
Water Splitting ◽  
Social Impact ◽  
Electrical Energy ◽  
Future Research ◽  
Daily Lives ◽  
Energy Applications ◽  
Sustainable Environment ◽  
Energy Technologies ◽  
Splitting System

In recent years, we have experienced extreme climate changes due to the global warming, continuously impacting and changing our daily lives. To build a sustainable environment and society, various energy technologies have been developed and introduced. Among them, energy harvesting, converting ambient environmental energy into electrical energy, has emerged as one of the promising technologies for a variety of energy applications. In particular, a photo (electro) catalytic water splitting system, coupled with emerging energy harvesting technology, has demonstrated high device performance, demonstrating its great social impact for the development of the new water splitting system. In this review article, we introduce and discuss in detail the emerging energy-harvesting technology for photo (electro) catalytic water splitting applications. The article includes fundamentals of photocatalytic and electrocatalytic water splitting and water splitting applications coupled with the emerging energy-harvesting technologies using piezoelectric, piezo-phototronic, pyroelectric, triboelectric, and photovoltaic effects. We comprehensively deal with different mechanisms in water splitting processes with respect to the energy harvesting processes and their effect on the water splitting systems. Lastly, new opportunities in energy harvesting-assisted water splitting are introduced together with future research directions that need to be investigated for further development of new types of water splitting systems.

scholarly journals Solar-driven valorisation of glycerol on BiVO4 photoanodes: effect of co-catalyst and reaction media on reaction selectivity

2021 ◽  
Vol 9 (10) ◽  
pp. 6252-6260
Author(s):  
Yi-Hsuan Wu ◽  
Denis A. Kuznetsov ◽  
Nicholas C. Pflug ◽  
Alexey Fedorov ◽  
Christoph R. Müller
Keyword(s):  
Bismuth Vanadate ◽  
Excellent Performance ◽  
Co Catalyst ◽  
Reaction Selectivity ◽  
Reaction Media ◽  
Glycerol Reforming

Photoelectrodes based on bismuth vanadate demonstrate excellent performance in photoelectrochemical glycerol reforming.

A Yin-Yang hybrid co-catalyst (CoOx-Mo2N) for photocatalytic overall water splitting

2021 ◽  
pp. 120491
Author(s):  
Baojun Ma ◽  
Yuying Dang ◽  
Dekang Li ◽  
Xiaoyan Wang ◽  
Keying Lin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Co Catalyst ◽  
Overall Water Splitting ◽  
Yin Yang

Cadmium sulfide Co-catalyst reveals the crystallinity impact of nickel oxide photocathode in photoelectrochemical water splitting

2019 ◽  
Vol 44 (37) ◽  
pp. 20851-20856 ◽  
Author(s):  
Yoshitaka Suzuki ◽  
Zhirun Xie ◽  
Xunyu Lu ◽  
Yoke Wang Cheng ◽  
Rose Amal ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Cadmium Sulfide ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Co Catalyst
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