Nanoporous Ta3N5via electrochemical anodization followed by nitridation for solar water oxidation

2020 ◽  
Vol 49 (42) ◽  
pp. 15023-15033
Author(s):  
Pran Krisna Das ◽  
Maheswari Arunachalam ◽  
Kanase Rohini Subhash ◽  
Young Jun Seo ◽  
Kwang-Soon Ahn ◽  
...  
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Water Splitting ◽  
Water Oxidation ◽  
Narrow Band ◽  
Tantalum Nitride ◽  
Electrochemical Anodization ◽  
Visible Light Driven ◽  
Solar Water Oxidation ◽  
Pec Water Splitting

Nanoporous tantalum nitride (Ta3N5) is a promising visible-light-driven photoanode for photoelectrochemical (PEC) water splitting with a narrow band gap of approximately 2.0 eV.

scholarly journals Recent Developments in the Use of Heterogeneous Semiconductor Photocatalyst Based Materials for a Visible-Light-Induced Water-Splitting System—A Brief Review

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 160
Author(s):  
Prabhakarn Arunachalam ◽  
Keiji Nagai ◽  
Mabrook S. Amer ◽  
Mohamed A. Ghanem ◽  
Rajabathar Jothi Ramalingam ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Water Oxidation ◽  
Electrode Materials ◽  
Oxide Electrodes ◽  
Recent Developments ◽  
Visible Light Driven ◽  
Difficult Challenge ◽  
Splitting System ◽  
Pec Water Splitting

Visible-light-driven photoelectrochemical (PEC) and photocatalytic water splitting systems featuring heterogeneous semiconductor photocatalysts (oxynitrides, oxysulfides, organophotocatalysts) signify an environmentally friendly and promising approach for the manufacturing of renewable hydrogen fuel. Semiconducting electrode materials as the main constituents in the PEC water splitting system have substantial effects on the device’s solar-to-hydrogen (STH) conversion efficiency. Given the complication of the photocatalysis and photoelectrolysis methods, it is indispensable to include the different electrocatalytic materials for advancing visible-light-driven water splitting, considered a difficult challenge. Heterogeneous semiconductor-based materials with narrower bandgaps (2.5 to 1.9 eV), equivalent to the theoretical STH efficiencies ranging from 9.3% to 20.9%, are recognized as new types of photoabsorbents to engage as photoelectrodes for PEC water oxidation and have fascinated much consideration. Herein, we spotlight mainly on heterogenous semiconductor-based photoanode materials for PEC water splitting. Different heterogeneous photocatalysts based materials are emphasized in different groups, such as oxynitrides, oxysulfides, and organic solids. Lastly, the design approach and future developments regarding heterogeneous photocatalysts oxide electrodes for PEC applications and photocatalytic applications are also discussed.

scholarly journals Au decorated BiVO4 inverse opal for efficient visible light driven water oxidation

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8751-8758
Author(s):  
Xiaonong Wang ◽  
Xiaoxia Li ◽  
Jingxiang Low
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Water Oxidation ◽  
Inverse Opal ◽  
Photocatalytic Water Splitting ◽  
Visible Light Driven

Photocatalytic water splitting provides an effective way to prepare hydrogen and oxygen.

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.

A wide visible light driven complex perovskite Ba(Mg1/3Ta2/3)O3−xNy photocatalyst for water oxidation and reduction

2017 ◽  
Vol 5 (35) ◽  
pp. 18870-18877 ◽  
Author(s):  
Junyan Cui ◽  
Taifeng Liu ◽  
Yu Qi ◽  
Dan Zhao ◽  
Mingjun Jia ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Absorption Edge ◽  
Water Oxidation ◽  
Complex Perovskite ◽  
Nitrogen Doped ◽  
Solar Water Splitting ◽  
Visible Light Driven

A new nitrogen-doped metal oxide photocatalyst Ba(Mg1/3Ta2/3)O3−xNy (BMTON) with an absorption edge of ca. 560 nm was synthesized, showing obvious H2 or O2-evolution half reaction activities under visible light irradiation for promising solar water splitting.

Photocatalysis and solar hydrogen production

2007 ◽  
Vol 79 (11) ◽  
pp. 1917-1927 ◽  
Author(s):  
Akihiko Kudo
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Band Gap ◽  
Water Splitting ◽  
Environmental Issues ◽  
Apparent Quantum Yield ◽  
Solar Hydrogen ◽  
Visible Light Driven ◽  
Solar Hydrogen Production ◽  
Narrow Band Gap Semiconductors

Photocatalytic water splitting is a challenging reaction because it is an ultimate solution to energy and environmental issues. Recently, many new powdered photocatalysts for water splitting have been developed. For example, a NiO (0.2 wt %)/NaTaO3:La (2 %) photocatalyst with a 4.1-eV band gap showed high activity for water splitting into H2 and O2 with an apparent quantum yield of 56 % at 270 nm. Overall water splitting under visible light irradiation has been achieved by construction of a Z-scheme photocatalysis system employing visible-light-driven photocatalysts, Ru/SrTiO3:Rh and BiVO4 for H2 and O2 evolution, and an Fe3+/Fe2+ redox couple as an electron relay. Moreover, highly efficient sulfide photocatalysts for solar hydrogen production in the presence of electron donors were developed by making solid solutions of ZnS with AgInS2 and CuInS2 of narrow band gap semiconductors. Thus, the database of powdered photocatalysts for water splitting has become plentiful.

scholarly journals Vapor growth of binary and ternary phosphorus-based semiconductors into TiO2 nanotube arrays and application in visible light driven water splitting

2019 ◽  
Vol 1 (8) ◽  
pp. 2881-2890
Author(s):  
Ebru Üzer ◽  
Pawan Kumar ◽  
Ryan Kisslinger ◽  
Piyush Kar ◽  
Ujwal Kumar Thakur ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Hybrid Materials ◽  
Water Oxidation ◽  
Double Helix ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Vapor Growth ◽  
Visible Light Driven

Polyphosphide–TiO2 hybrid materials, like SnIP@TiO2, are used as photocatalysts for PEC-water-oxidation: SnIP a double helix semiconductor reacted as nanofibers onto and into TiO2 nanotube arrays. Due to synergetic effects an enhanced water splitting performance was found.

A Ni2P modified Ti4+ doped Fe2O3 photoanode for efficient solar water oxidation by promoting hole injection

2017 ◽  
Vol 46 (32) ◽  
pp. 10549-10552 ◽  
Author(s):  
Qijing Bu ◽  
Shuo Li ◽  
Shuang Cao ◽  
Qidong Zhao ◽  
Yong Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Hole Injection ◽  
Back Reaction ◽  
Nickel Phosphide ◽  
Injection Efficiency ◽  
Solar Water ◽  
Solar Water Oxidation ◽  
Pec Water Splitting

Nickel phosphide (Ni2P) was used as an excellent water oxidation cocatalyst for photoelectrochemical (PEC) water splitting, which could significantly promote the hole injection efficiency and suppress the back reaction of water oxidation over a Ti4+ doped Fe2O3 photoanode.

K8Ce2I18O53: a novel potassium cerium(iv) iodate with enhanced visible light driven photocatalytic activity resulting from polar zero dimensional [Ce(IO3)8]4− units

2017 ◽  
Vol 46 (13) ◽  
pp. 4170-4173 ◽  
Author(s):  
Ruofei Wu ◽  
Xingxing Jiang ◽  
Mingjun Xia ◽  
Lijuan Liu ◽  
Xiaoyang Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rare Earth ◽  
Visible Light ◽  
Band Gap ◽  
Narrow Band ◽  
Visible Light Driven

K8Ce2I18O53 shows the highest visible light driven photocatalytic activity among rare earth iodates due to asynergistic effect between the narrow band gap and polar zero-dimensional [Ce(IO3)8]4− units.

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