Group 11–15 Metal Chalcogenides

2021 ◽  
pp. 218-260
Author(s):  
Jian‐Rong Li ◽  
Mei‐Ling Feng ◽  
Bing Hu ◽  
Xiao‐Ying Huang
Keyword(s):  
Metal Chalcogenides

Electronic structure of alkali metal chalcogenides

2015 ◽  
Vol 38 (0) ◽  
pp. 70-81
Author(s):  
Д. И. Блецкан ◽  
В. В. Вакульчак ◽  
А. В. Лукач
Keyword(s):  
Electronic Structure ◽  
Alkali Metal ◽  
Metal Chalcogenides

Effect of the structural changes on the mechanical properties of the sintered films

2016 ◽  
Vol 12 (1) ◽  
pp. 4141-4144
Author(s):  
Garima Jain
Keyword(s):  
Crystallite Size ◽  
Lattice Constant ◽  
Structural Changes ◽  
Structural Investigation ◽  
Energy Gap ◽  
Lattice Parameter ◽  
Metal Chalcogenides ◽  
Optical Energy Gap ◽  
Tin Telluride ◽  
Physical Quantities

Polycrystalline films of tin telluride were prepared by sintering technique. The structural investigation of the films with different thicknesses enables to determine lattice parameter, crystallite size and strain existing in the films. The XRD traces showed that strain was tensile in nature. The crystallite size increases with thickness while strain decreases. Higher the value of tensile strain, larger is the lattice constant. The optical energy gap shows a descending nature with increasing strain and so with the lattice constant. Such an attempt made to delve into interdependence of basic physical quantities helps to explore the properties of SnTe and utilize it as an alternative to heavy metal chalcogenides in various technological applications.  

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.

Recent progress of nanostructured metal chalcogenides and their carbon-based hybrids for advanced potassium battery anodes

2021 ◽  
Author(s):  
Zhiyong Li ◽  
Rui Sun ◽  
Zhaoxia Qin ◽  
Xinlong Liu ◽  
Caihong Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Recent Progress ◽  
Lithium Ion ◽  
Potassium Ion ◽  
Metal Chalcogenides ◽  
Nanostructured Metal ◽  
Carbon Based

Investigation on rechargeable potassium-ion batteries (PIBs) has been revitalized owing to the unique characteristics of abundant reserves and comparable energy density over lithium-ion batteries (LIBs), which holds huge potential for...

Selenium enriched hybrid metal chalcogenides with enhanced redox kinetics for high-energy density supercapacitors

2021 ◽  
Vol 414 ◽  
pp. 128924
Author(s):  
Ramu Manikandan ◽  
C. Justin Raj ◽  
Goli Nagaraju ◽  
Rajavel Velayutham ◽  
Simon E. Moulton ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Metal Chalcogenides ◽  
Redox Kinetics

scholarly journals Metal Chalcogenides with Heterostructures for High‐Performance Rechargeable Batteries

Small Science ◽  
2021 ◽  
pp. 2100012
Author(s):  
Yu Li ◽  
Feng Wu ◽  
Ji Qian ◽  
Minghao Zhang ◽  
Yanxian Yuan ◽  
...  
Keyword(s):  
High Performance ◽  
Rechargeable Batteries ◽  
Metal Chalcogenides
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