New rare earth hafnium oxynitride perovskites with photocatalytic activity in water oxidation and reduction

2018 ◽  
Vol 54 (12) ◽  
pp. 1525-1528 ◽  
Author(s):  
Ashley P. Black ◽  
Hajime Suzuki ◽  
Masanobu Higashi ◽  
Carlos Frontera ◽  
Clemens Ritter ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Water Splitting ◽  
Water Oxidation ◽  
Overall Water Splitting ◽  
Hafnium Oxynitride

RHfO2N perovskites with R = La, Nd, and Sm represent the first examples of quaternary hafnium oxynitrides and are active as photocatalysts in the overall water splitting reaction.

Visible light-driven novel g-C3N4/NiFe-LDH composite photocatalyst with enhanced photocatalytic activity towards water oxidation and reduction reaction

2015 ◽  
Vol 3 (36) ◽  
pp. 18622-18635 ◽  
Author(s):  
Susanginee Nayak ◽  
Lagnamayee Mohapatra ◽  
Kulamani Parida
Keyword(s):  
Photocatalytic Activity ◽  
Composite Materials ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Reduction Reaction ◽  
Light Irradiation ◽  
Composite Photocatalyst ◽  
Visible Light Driven

Dispersion of exfoliated CN over the surface of exfoliated LDH composite materials, and its photocatalytic water splitting under visible-light irradiation.

scholarly journals Single-atom cobalt-hydroxyl modification of polymeric carbon nitride for highly enhanced photocatalytic water oxidation: ball milling increased single atom loading

2022 ◽  
Author(s):  
Fei Yu ◽  
Tingting Huo ◽  
Quanhua Deng ◽  
Guoan Wang ◽  
Yuguo Xia ◽  
...  
Keyword(s):  
Ball Milling ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Carbon Nitride ◽  
Single Atom ◽  
Overall Water Splitting ◽  
Polymeric Carbon

Expediting the oxygen evolution reaction (OER) is the key to achieving efficient photocatalytic overall water splitting. Herein, single-atom Co−OH modified polymeric carbon nitride (Co-PCN) was synthesized with single-atom loading increased...

scholarly journals Integration of Bio-inspired lanthanide-transition metal cluster and P-doped carbon nitride for efficient photocatalytic overall water splitting

2020 ◽  
Author(s):  
Rong Chen ◽  
Gui-Lin Zhuang ◽  
Zhi-Ye Wang ◽  
Yi-Jing Gao ◽  
Zhe Li ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Water Oxidation ◽  
Transient Absorption ◽  
Metal Cluster ◽  
Photoexcited Electron ◽  
Ps Ii ◽  
Heterometallic Cluster ◽  
Overall Water Splitting ◽  
Oxygen Evolving

Abstract Photosynthesis in nature uses the Mn4CaO5 cluster as the oxygen-evolving center to catalyze the water oxidation efficiently in photosystem II (PS II). Herein, we demonstrate a bio-inspired heterometallic cluster LnCo3 (Ln = Nd, Eu and Ce) clusters, which can be viewed as synthetic analogs of CaMn4O5 cluster. Anchoring LnCo3 on phosphorus-doped graphitic carbon nitrides (PCN) shows efficient overall water splitting without any sacrificial reagents. The NdCo3/PCN-c photocatalyst exhibits excellent water splitting activity and a quantum efficiency of 2.0% at 350 nm. Ultrafast transient absorption (TA) spectroscopy revealed the transfer of photoexcited electron and hole into the PCN and LnCo3 for hydrogen and oxygen evolution reactions, respectively. DFT calculation showed the cooperative water activation on lanthanide and O-O bond formation on transition metal for water oxidation. This work not only prepares a synthetic model of bio-inspired oxygen-evolving center but also provides an effective strategy to realize light-driven overall water splitting.

Function-switchable metal/semiconductor junction enables efficient photocatalytic overall water splitting with selective water oxidation products

2020 ◽  
Vol 65 (16) ◽  
pp. 1389-1395 ◽  
Author(s):  
Daixing Wei ◽  
Yubo Tan ◽  
Yiqing Wang ◽  
Tingting Kong ◽  
Shaohua Shen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Oxidation Products ◽  
Overall Water Splitting ◽  
Semiconductor Junction

Photocatalytic Activity for Overall Water Splitting of RuO2-Loaded YxIn2-xO3 (x = 0.9−1.5)

2008 ◽  
Vol 112 (13) ◽  
pp. 5000-5005 ◽  
Author(s):  
N. Arai ◽  
N. Saito ◽  
H. Nishiyama ◽  
Y. Shimodaira ◽  
H. Kobayashi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Overall Water Splitting

scholarly journals Vapor-Phase Photocatalytic Overall Water Splitting Using Hybrid Methylammonium Copper and Lead Perovskites

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 960 ◽  
Author(s):  
Teresa García ◽  
Rocío García-Aboal ◽  
Josep Albero ◽  
Pedro Atienzar ◽  
Hermenegildo García
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Vapor Phase ◽  
Irradiation Time ◽  
H2 Production ◽  
Charge Migration ◽  
Copper Halide ◽  
Overall Water Splitting ◽  
Sacrificial Agent ◽  
Maximum Production Rate

Films or powders of hybrid methylammonium copper halide perovskite exhibit photocatalytic activity for overall water splitting in the vapor phase in the absence of any sacrificial agent, resulting in the generation of H2 and O2, reaching a maximum production rate of 6 μmol H2 × g cat−1h−1 efficiency. The photocatalytic activity depends on the composition, degreasing all inorganic Cs2CuCl2Br2 perovskite and other Cl/Br proportions in the methylammonium hybrids. XRD indicates that MA2CuCl2Br2 is stable under irradiation conditions in agreement with the linear H2 production with the irradiation time. Similar to copper analogue, hybrid methylammonium lead halide perovskites also promote the overall photocatalytic water splitting, but with four times less efficiency than the Cu analogues. The present results show that, although moisture is strongly detrimental to the photovoltaic applications of hybrid perovskites, it is still possible to use these materials as photocatalysts for processes requiring moisture due to the lack of relevance in the photocatalytic processes of interparticle charge migration.

Facile construction of self-supported Fe-doped Ni3S2 nanoparticle arrays for ultralow-overpotential oxygen evolution reaction

Nanoscale ◽  
2020 ◽  
Author(s):  
Ning Xie ◽  
Dong-Dong Ma ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Cost Effective ◽  
Nanoparticle Arrays ◽  
Overall Water Splitting ◽  
Construction Of Self ◽  
One Step

Constructing high-performance and cost-effective electrocatalysts for water oxidation, particularly for overall water splitting is extremely needed, whereas still challenging. Herein, based on an economical and facile one-step surface sulfurization strategy,...

Nano vs. bulk rutile TiO2:N,F in Z-scheme overall water splitting under visible light

2020 ◽  
Vol 8 (24) ◽  
pp. 11996-12002 ◽  
Author(s):  
Akinobu Miyoshi ◽  
Kosaku Kato ◽  
Toshiyuki Yokoi ◽  
Jan J. Wiesfeld ◽  
Kiyotaka Nakajima ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Water Oxidation ◽  
Rutile Tio2 ◽  
Overall Water Splitting

Nitrogen/fluorine-codoped rutile TiO2 nanoparticles worked more efficiently as a water oxidation photocatalyst in visible-light Z-scheme water splitting than a bulk analogue.

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