https://www.jpcomplex.ir/Content/media/image/2013/08/772_orig.pdf

Electrochemical technologies in wastewater treatment

The surface and materials science of tin oxide

Direct And Mediated Anodic Oxidation of Organic Pollutants

This review highlights recent developments and future perspectives in carbon dioxide usage for the sustainable production of energy and chemicals and to reduce global warming. We discuss the heterogeneously catalysed hydrogenation, as well as the photocatalytic and electrocatalytic conversion of CO2 to hydrocarbons or oxygenates. Various sources of hydrogen are also reviewed in terms of their CO2 neutrality. Technologies have been developed for large-scale CO2 hydrogenation to methanol or methane. Their industrial application is, however, limited by the high price of renewable hydrogen and the availability of large-volume sources of pure CO2. With regard to the direct electrocatalytic reduction of CO2 to value-added chemicals, substantial advances in electrodes, electrolyte, and reactor design are still required to permit the development of commercial processes. Therefore, in this review particular attention is paid to (i) the design of metal electrodes to improve their performance and (ii) recent developments of alternative approaches such as the application of ionic liquids as electrolytes and of microorganisms as co-catalysts. The most significant improvements both in catalyst and reactor design are needed for the photocatalytic functionalisation of CO2 to become a viable technology that can help in the usage of CO2 as a feedstock for the production of energy and chemicals. Apart from technological aspects and catalytic performance, we also discuss fundamental strategies for the rational design of materials for effective transformations of CO2 to value-added chemicals with the help of H2, electricity and/or light.

/pdf/status-and-perspectives-of-co2-conversion-into-fuels-and-aitrajygas.pdf

Status and perspectives of CO2 conversion into fuels and chemicals by catalytic, photocatalytic and electrocatalytic processes

Electrochromic tungsten oxide films: Review of progress 1993–1998

Diamond as a high performance material occupies a special place due to its in many ways extreme properties, e.g., hardness, chemical inertness, thermal conductivity, optical properties, and electric characteristics. Work mainly over the last decade has shown that diamond also occupies a special place as an electrode material with interesting applications in electroanalysis. When made sufficiently electrically conducting for example by boron-doping, ‘thin film' and ‘free–standing' diamond electrodes exhibit remarkable chemical resistance to etching, a wide potential window, low background current responses, mechanical stability towards ultrasound induced interfacial cavitation, a low ‘stickiness' in adsorption processes, and a high degree of ‘tunability' of the surface properties. This review summarizes some of the recent work aimed at applying conductive (boron-doped) diamond electrodes to improve procedures in electroanalysis.

Electroanalysis at diamond-like and doped-diamond electrodes

https://ora.ox.ac.uk/objects/uuid:986633c4-e60a-4470-b246-fa90e1bc437e/download_file?safe_filename=jnianjunCarbon_Diamond%2BNanoelectrochemistry_final.pdf&file_format=application%2Fpdf&type_of_work=Journal+article

Diamond electrochemistry at the nanoscale: A review

Nb(2)O(5) nanorods and nanospheres were synthesized, and their photocatalytic activity for methylene blue decomposition in water compared. Nb(2)O(5) nanorods clearly displayed higher activity, despite their comparable surface area. With a shape-dependent surface acidity, hydrothermal stability, and high photoactivity, these Nb(2)O(5) nanorods are a unique and exciting nanomaterial for non-classical photocatalytic mineralization of organic compounds in water.

Shape‐Dependent Acidity and Photocatalytic Activity of Nb2O5 Nanocrystals with an Active TT (001) Surface

X-ray photoelectron spectroscopy has been used to investigate a range of manganese oxide compounds and the initial stages of oxidation of manganese metal. It is shown that the Mn 2p3/2 binding energy, the extent of multiplet splitting of the 3s level, and the O Is : Mn 2p3/2 signal intensity ratio vary systematically between the different oxides. This information is used to identify oxide species present on the surface of manganese films during oxidation. A reaction sequence Mn→MnO→Mn2O3→MnO2 is demonstrated.

John S. Foord

Papers

Electroanalysis at diamond-like and doped-diamond electrodes

Diamond electrochemistry at the nanoscale: A review

Shape‐Dependent Acidity and Photocatalytic Activity of Nb2O5 Nanocrystals with an Active TT (001) Surface

An X-ray photoelectron spectroscopic investigation of the oxidation of manganese

Electrochemically induced surface modifications of boron-doped diamond electrodes: an X-ray photoelectron spectroscopy study