The fate of oxygen on graphene-catalyst in the photocatalytic water splitting reaction

2021 ◽  
Author(s):  
Jun Wang ◽  
Zhenbo Peng ◽  
Kaili Zhu ◽  
Mengqiu Xu ◽  
Ting Tao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocatalytic Water Splitting ◽  
Time Points ◽  
First Time ◽  
Splitting Process

This paper reveals the transformation of oxygen on graphene in the water splitting process and for the first time, points out a step by step dehydrogenation process with the intermediates OH–C and O–C, and finally CO2.

Tailoring the diameter of electrospun layered perovskite nanofibers for photocatalytic water splitting

2018 ◽  
Vol 6 (5) ◽  
pp. 1971-1978 ◽  
Author(s):  
André Bloesser ◽  
Pascal Voepel ◽  
Marc O. Loeh ◽  
Andreas Beyer ◽  
Kerstin Volz ◽  
...  
Keyword(s):  
Water Splitting ◽  
Fiber Diameter ◽  
Layered Perovskite ◽  
Photocatalytic Water Splitting ◽  
Nanofiber Diameter ◽  
First Time

Electrospun layered perovskite Ba5Ta4O15 nanofibers are varied in their diameter for the first time by the identification of electrospinning setup parameters controlling the resulting nanofiber diameter. The influence of fiber diameter on photocatalytic water splitting activity is revealed.

Two-dimensional (2D) MnIn2Se4 nanosheets with porous structure: a novel photocatalyst for water splitting without sacrificial agents

2019 ◽  
Vol 55 (100) ◽  
pp. 15061-15064 ◽  
Author(s):  
Hui Liang ◽  
Ting Feng ◽  
Shengda Tan ◽  
Kaili Zhao ◽  
Wei Wang ◽  
...  
Keyword(s):  
Porous Structure ◽  
Hydrothermal Method ◽  
Water Splitting ◽  
Pure Water ◽  
Intrinsic Property ◽  
Evolution Rate ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
Simple Hydrothermal Method ◽  
First Time

2D porous MnIn2Se4 nanosheets have been synthesized for the first time via a simple hydrothermal method. The intrinsic property of the hitherto unexplored MnIn2Se4 for photocatalytic water splitting was clearly studied, and the H2 evolution rate reached 35 μmol g−1 h−1 in pure water.

Facile synthesis of porous hybrid materials based on Calix-3 dye and TiO2 for high photocatalytic water splitting performance with excellent stability

2019 ◽  
Vol 7 (7) ◽  
pp. 2993-2999 ◽  
Author(s):  
Jian-Feng Huang ◽  
Jun-Min Liu ◽  
Li-Min Xiao ◽  
Yu-Hui Zhong ◽  
Liang Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Hybrid Materials ◽  
Hybrid Material ◽  
Sol Gel ◽  
Pt Nanoparticles ◽  
Facile Synthesis ◽  
Gel Method ◽  
Photocatalytic Water Splitting ◽  
First Time ◽  
Excellent Stability

A highly robust hybrid material Calix-3-TiO2 based on calixarene dye and TiO2 is prepared by a facile sol–gel method for the first time. When Pt nanoparticles are introduced onto the hybrid, the catalysts display efficient and persistent photocatalytic water splitting activities.

Photodeposited CoNi co-catalysts for the enhanced photocatalytic performance of C3N4/CdS nanosheets: the synergy of optimized Gibbs free energy and Co-S bridging bonds

2021 ◽  
Author(s):  
Qixiao Gai ◽  
Shoutian Ren ◽  
Xiaochun Zheng ◽  
Wenjun Liu ◽  
Quanli Dong
Keyword(s):  
Free Energy ◽  
Transition Metal ◽  
Water Splitting ◽  
Gibbs Free Energy ◽  
Photocatalytic Performance ◽  
Considerable Potential ◽  
Photocatalytic Water Splitting ◽  
Co Catalysts ◽  
Poor Stability ◽  
Splitting Process

Transition metal co-catalysts exhibit considerable potential in photocatalytic water splitting process, but their limited activity and poor stability inhibit the extensive application, and therefore effective schemes are required to further...

Efficient and stable charge transfer channels for photocatalytic water splitting activity of CdS without sacrificial agents

2020 ◽  
Vol 8 (40) ◽  
pp. 20963-20969 ◽  
Author(s):  
Wei Chen ◽  
Guo-Bo Huang ◽  
Hao Song ◽  
Jian Zhang
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Photocatalytic Water Splitting ◽  
Transfer Channel ◽  
Efficient Charge ◽  
Transfer Channels

An efficient charge transfer channel for improving the photocatalytic water splitting activity and durability of CdS without sacrificial agents.

scholarly journals Recent Achievements in Development of TiO2-Based Composite Photocatalytic Materials for Solar Driven Water Purification and Water Splitting

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1338 ◽  
Author(s):  
Klara Perović ◽  
Francis M. dela Rosa ◽  
Marin Kovačić ◽  
Hrvoje Kušić ◽  
Urška Lavrenčič Štangar ◽  
...  
Keyword(s):  
Water Treatment ◽  
Transition Metal ◽  
Photocatalytic Degradation ◽  
Water Splitting ◽  
Water Purification ◽  
Degradation Mechanism ◽  
Living Environment ◽  
Solar Irradiation ◽  
Metal Chalcogenides ◽  
Photocatalytic Water Splitting

Clean water and the increased use of renewable energy are considered to be two of the main goals in the effort to achieve a sustainable living environment. The fulfillment of these goals may include the use of solar-driven photocatalytic processes that are found to be quite effective in water purification, as well as hydrogen generation. H2 production by water splitting and photocatalytic degradation of organic pollutants in water both rely on the formation of electron/hole (e−/h+) pairs at a semiconducting material upon its excitation by light with sufficient photon energy. Most of the photocatalytic studies involve the use of TiO2 and well-suited model compounds, either as sacrificial agents or pollutants. However, the wider application of this technology requires the harvesting of a broader spectrum of solar irradiation and the suppression of the recombination of photogenerated charge carriers. These limitations can be overcome by the use of different strategies, among which the focus is put on the creation of heterojunctions with another narrow bandgap semiconductor, which can provide high response in the visible light region. In this review paper, we report the most recent advances in the application of TiO2 based heterojunction (semiconductor-semiconductor) composites for photocatalytic water treatment and water splitting. This review article is subdivided into two major parts, namely Photocatalytic water treatment and Photocatalytic water splitting, to give a thorough examination of all achieved progress. The first part provides an overview on photocatalytic degradation mechanism principles, followed by the most recent applications for photocatalytic degradation and mineralization of contaminants of emerging concern (CEC), such as pharmaceuticals and pesticides with a critical insight into removal mechanism, while the second part focuses on fabrication of TiO2-based heterojunctions with carbon-based materials, transition metal oxides, transition metal chalcogenides, and multiple composites that were made of three or more semiconductor materials for photocatalytic water splitting.

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