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...

scholarly journals Unraveling the synergy between metal–organic frameworks and co-catalysts in photocatalytic water splitting

2020 ◽  
Vol 8 (39) ◽  
pp. 20493-20502
Author(s):  
Stefano Falletta ◽  
Patrick Gono ◽  
Zhendong Guo ◽  
Stavroula Kampouri ◽  
Kyriakos C. Stylianou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocatalytic Performance ◽  
Metal Organic Frameworks ◽  
Water Systems ◽  
Band Alignment ◽  
Co Catalyst ◽  
Photocatalytic Water Splitting ◽  
Co Catalysts ◽  
Metal Organic

Theoretical methodologies for the band alignment at MOF/co-catalyst/water systems revealing the electronic and atomistic mechanisms underlying their photocatalytic performance.

Computational screening of transition-metal single atom doped C9N4 monolayers as efficient electrocatalysts for water splitting

Nanoscale ◽  
2019 ◽  
Vol 11 (39) ◽  
pp. 18169-18175 ◽  
Author(s):  
Yanan Zhou ◽  
Guoping Gao ◽  
Jun Kang ◽  
Wei Chu ◽  
Lin-Wang Wang
Keyword(s):  
Free Energy ◽  
Transition Metal ◽  
Water Splitting ◽  
Gibbs Free Energy ◽  
Active Sites ◽  
Hydrogen Adsorption ◽  
Single Atom ◽  
Bifunctional Electrocatalyst ◽  
Computational Screening ◽  
Catalytic Active Sites

Ni@C9N4 performs as a promising bifunctional electrocatalyst with N and Ni atoms as the catalytic active sites for HER and OER, with calculated hydrogen adsorption Gibbs free energy (ΔGH*) of −0.04 eV and OER overpotential (ηOER) of 0.31 V.

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.

(002) facets exposed and controllable thickness of CdS nanobelts drive desirable hydrogen-adsorption free energy (△GH) for boosting visible-light photocatalytic performance

2021 ◽  
Author(s):  
Dejian Yan ◽  
Zhiyong Xue ◽  
Feng Chen ◽  
Xia Liu ◽  
Zhenhua Yang ◽  
...  
Keyword(s):  
Free Energy ◽  
Visible Light ◽  
Environmental Pollution ◽  
Economically Disadvantaged ◽  
Photocatalytic Performance ◽  
Hydrogen Adsorption ◽  
Co Catalysts ◽  
Adsorption Free Energy ◽  
Cds Nanobelts ◽  
Visible Light Photocatalytic

In order to obtain the high photocatalytic performance, co-catalysts loading is the most commonly used, which is economically disadvantaged and environmental pollution. Here, we combine the strategy of controllable thickness...

Nb3O7OH Nanoarrays for Photocatalytic Water Splitting: Defects, Dopants, and Stability of co-Catalysts

2018 ◽  
Author(s):  
Christina Scheu ◽  
Sophia Betzler ◽  
Thomas Gänsler ◽  
Katharina Hengge ◽  
Anna Frank ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocatalytic Water Splitting ◽  
Co Catalysts

scholarly journals Photodeposition of Copper and Chromia on Gallium Oxide: The Role of Co-Catalysts in Photocatalytic Water Splitting

ChemSusChem ◽  
2014 ◽  
Vol 7 (4) ◽  
pp. 1030-1034 ◽  
Author(s):  
G. Wilma Busser ◽  
Bastian Mei ◽  
Anna Pougin ◽  
Jennifer Strunk ◽  
Ramona Gutkowski ◽  
...  
Keyword(s):  
Water Splitting ◽  
Gallium Oxide ◽  
Photocatalytic Water Splitting ◽  
Co Catalysts
Sign in / Sign up

Export Citation Format

Share Document