Oxidative photo-deposition of chromia: tuning the activity for overall water splitting of the Rh/CrOx co-catalyst system

2017 ◽  
Vol 5 (33) ◽  
pp. 17248-17252 ◽  
Author(s):  
J. Menze ◽  
B. Mei ◽  
P. Weide ◽  
M. Muhler
Keyword(s):  
Water Splitting ◽  
Catalyst System ◽  
Co Catalyst ◽  
Overall Water Splitting ◽  
System P

By employing an oxidative photodeposition of CrOx the Rh/CrOx co-catalyst system was prepared on Ga2O3 and Ta2O5 resulting in up to 25% higher overall water splitting activities.

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

Bridge-type interface optimization on a dual-semiconductor heterostructure toward high performance overall water splitting

2018 ◽  
Vol 6 (17) ◽  
pp. 7871-7876 ◽  
Author(s):  
Chong Wang ◽  
Bin Ma ◽  
Xingzhong Cao ◽  
Shan He ◽  
Jingbin Han ◽  
...  
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
High Efficiency ◽  
Co Catalyst ◽  
Overall Water Splitting ◽  
Semiconductor Heterostructure ◽  
Bridge Type

A bridge-type interface was constructed in a Cu2O@ZnCr-LDH photocatalyst, and it imparts high efficiency for overall water splitting without any co-catalyst.

scholarly journals Mechanism for spontaneous oxygen and hydrogen evolution reactions on CoO nanoparticles

2019 ◽  
Vol 7 (12) ◽  
pp. 6708-6719 ◽  
Author(s):  
Kyoung-Won Park ◽  
Alexie M. Kolpak
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
High Efficiency ◽  
Applied Bias ◽  
Co Catalyst ◽  
Photocatalytic Water Splitting ◽  
Overall Water Splitting ◽  
Nanoparticle Suspensions ◽  
Hydrogen Evolution Reactions ◽  
Coo Nanoparticles

Overall photocatalytic water splitting with a high efficiency has recently been observed for CoO nanoparticle suspensions in the absence of an applied bias or co-catalyst. This study clarifies the mechanism of spontaneous overall water splitting with the prominent efficiency observed on the CoO nanoparticle.

scholarly journals Facile structure design based on C3N4 for mediator-free Z-scheme water splitting under visible light

2015 ◽  
Vol 5 (6) ◽  
pp. 3416-3422 ◽  
Author(s):  
Guixia Zhao ◽  
Xiubing Huang ◽  
Federica Fina ◽  
Guan Zhang ◽  
John T. S. Irvine
Keyword(s):  
Visible Light ◽  
Hydrothermal Method ◽  
Water Splitting ◽  
Structure Design ◽  
Co Catalyst ◽  
Overall Water Splitting

A mediator-free Z-scheme overall water splitting photocatalyst system is achieved through the use of C3N4 (H2 generation catalyst) and WO3 (O2 generation catalyst) composite from a hydrothermal method, and Pt as co-catalyst under visible light (λ > 420 nm).

scholarly journals Photocatalytic Overall Water Splitting over MIL-125(Ti) upon CoPi and Pt Co-catalyst Deposition

ChemistryOpen ◽  
2017 ◽  
Vol 6 (6) ◽  
pp. 701-705 ◽  
Author(s):  
Yang An ◽  
Benyan Xu ◽  
Yuanyuan Liu ◽  
Zeyan Wang ◽  
Peng Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Co Catalyst ◽  
Overall Water Splitting

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.

Boosting photocatalytic overall water splitting by Co doping into Mn3O4 nanoparticles as oxygen evolution cocatalysts

Nanoscale ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 10420-10427 ◽  
Author(s):  
Taizo Yoshinaga ◽  
Masaki Saruyama ◽  
Anke Xiong ◽  
Yeilin Ham ◽  
Yongbo Kuang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Cobalt Doping ◽  
Photocatalytic Water Splitting ◽  
Co Doping ◽  
Overall Water Splitting ◽  
System P ◽  
Mn3o4 Nanoparticles

Cobalt doping into a Mn3O4 nanoparticle cocatalyst enhanced photocatalytic water splitting activity of a Mn3O4 cocatalyst/photocatalyst system.

scholarly journals Photocatalytic overall water splitting under visible light enabled by a particulate conjugated polymer loaded with iridium

2022 ◽  
Author(s):  
Yang Bai ◽  
Chao Li ◽  
Lunjie Liu ◽  
Yuichi Yamaguchi ◽  
Bahri Mounib ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Conjugated Polymer ◽  
Hydrogen Energy ◽  
Organic Polymers ◽  
Co Catalyst ◽  
Co Catalysts ◽  
Solar Water Splitting ◽  
Overall Water Splitting ◽  
Production Of Hydrogen

The production of hydrogen from water via solar water splitting is a potential method to overcome the intermittency of the Sun’s energy by storing it as a chemical fuel. Inorganic semiconductors have been studied extensively as photocatalysts for overall water splitting, but polymer photocatalysts are also receiving growing attention. So far, most studies involving organic polymers report hydrogen production with sacrificial electron donors, which is unsuitable for large-scale hydrogen energy production. Here we show that a linear conjugated polymer photocatalyst can be used for overall water splitting to produce stoichiometric amounts of H2 and O2. We studied a range of different metal co-catalysts in conjunction with the linear polymer photocatalyst, the homopolymer of dibenzo[b,d]thiophene sulfone (P10). Photocatalytic activity was observed for palladium/iridium oxide-loaded P10, while other co-catalysts resulted in materials that showed no activity for overall water splitting. The reaction conditions were further optimized and the overall water splitting using the IrO2-loaded P10 was found to proceed steadily for an extended period (>60 hours) after the system stabilized. These results demonstrate that conjugated polymers can act as single component photocatalytic systems for overall water splitting when loaded with suitable co-catalysts, albeit currently with low activities. Significantly, though, organic polymers can be designed to absorb a large fraction of the visible spectrum, which can be challenging with inorganic catalysts. Transient spectroscopy shows that the IrO2 co-catalyst plays an important role in the generation of the charge separated state required for water splitting, with evidence for fast hole transfer to the co-catalyst. This solid-state approach should be transferable to other polymer photocatalysts, allowing this field to move away from sacrificial hydrogen production towards overall water splitting.

Sign in / Sign up

Export Citation Format

Share Document