2.3. Evaluation of Photocatalytic Water Splitting 6507 2.3.1. Photocatalytic Activity 6507 2.3.2. Photocatalytic Stability 6507 3. UV-Active Photocatalysts for Water Splitting 6507 3.1. d0 Metal Oxide Photocatalyts 6507 3.1.1. Ti-, Zr-Based Oxides 6507 3.1.2. Nb-, Ta-Based Oxides 6514 3.1.3. W-, Mo-Based Oxides 6517 3.1.4. Other d0 Metal Oxides 6518 3.2. d10 Metal Oxide Photocatalyts 6518 3.3. f0 Metal Oxide Photocatalysts 6518 3.4. Nonoxide Photocatalysts 6518 4. Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting 6519

Semiconductor-based Photocatalytic Hydrogen Generation

Jenny Schneider,*,† Masaya Matsuoka,‡ Masato Takeuchi,‡ Jinlong Zhang, Yu Horiuchi,‡ Masakazu Anpo,‡ and Detlef W. Bahnemann*,† †Institut fur Technische Chemie, Leibniz Universitaẗ Hannover, Callinstrasse 3, D-30167 Hannover, Germany ‡Faculty of Engineering, Osaka Prefecture University, 1 Gakuen-cho, Sakai Osaka 599-8531, Japan Key Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China

Understanding TiO2 photocatalysis: mechanisms and materials.

In this chapter, we will restrict our attention to the ferrites and a few other closely related materials. The great interest in ferrites stems from their unique combination of a spontaneous magnetization and a high electrical resistivity. The observed magnetization results from the difference in the magnetizations of two non-equivalent sub-lattices of the magnetic ions in the crystal structure. Materials of this type should strictly be designated as “ferrimagnetic” and in some respects are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present. We shall not adhere to this special nomenclature except to emphasize effects, which are due to the existence of the sub-lattices.

Ferromagnetic materials

UV-Visible ار راد ن .د TiO2 ( تیفرظ راون مان هب نورتکلا یاراد یژرنا زارت لماش VB و ) رگید زارت ی یژرنا اب ( ییاناسر راون مان هب نورتکلا زا یلاخ و رتلااب VB یم ) .دشاب ت ود نیا نیب یژرنا توافت یژرنا فاکش زار ، پگ دناب هدیمان یم .دوش هک ینامز زا نورتکلا لاقتنا VB هب VB یم ماجنا دریگ ، TiO2 اب ودح یژرنا بذج د ev 2 / 3 ، نورتکلا تفج کی دیلوت یم هرفح .دیامن و نورتکلا هرفح ی نا اب هدش دیلوت یم کرتشم حطس هب لاقت ثعاب دناوت شنکاو ماجنا اه یی ددرگ . TiO2 دربراک ،دراد یدایز یاه هلمج زا یم ناوت اوه یگدولآ هیفصت یارب (CO2) و بآ و ... نآ زا هدافتسا درک .

Advanced Nanoarchitectures for Solar Photocatalytic Applications

Generations Yi Ma,† Xiuli Wang,† Yushuai Jia,† Xiaobo Chen,‡ Hongxian Han,*,† and Can Li*,† †State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Dalian National Laboratory for Clean Energy, 457 Zhongshan Road, Dalian 116023, China ‡Department of Chemistry, College of Arts and Sciences, University of Missouri-Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States

Titanium dioxide-based nanomaterials for photocatalytic fuel generations.

We report on the electric field control of magnetic phase transition temperatures in multiferroic Ni3V2O8 thin films Using magnetization measurements, we find that the phase transition temperature to the canted antiferromagnetic state is suppressed by 02 K in an electric field of 30 MV/m, as compared to the unbiased sample Dielectric measurements show that the transition temperature into the magnetic state associated with ferroelectric order increases by 02 K when the sample is biased at 25 MV/m This electric field control of the magnetic transitions can be qualitatively understood using a mean field model incorporating a tri-linear coupling between the magnetic order parameters and spontaneous polarization

Electric field control of magnetic phase transitions in Ni3V2O8

Lithium Vanadium Polyanionic Composite Multielectron Intercalation Cathode Derived from Thermodynamically Unstable Li2VP2O7/Li2VP2O7F

Influence of Nano-fibrous and Nano-particulate Morphology on the Rate Capability of Li3V2(PO4)3/C Li-ion Battery Cathode

Sustainable materials with nanostructured architecture have made great strides in today’s energy storage technology. In this context, sustainable, environment-friendly SnO2 are synthesised by hydrothermal method and its electrochemical performance as anode material for lithium and sodium-ion batteries are investigated. Structural analysis such as X-ray diffraction and Raman measurement validates the formation of the tetragonal rutile structure of pristine SnO2. Scanning electron microscope image shows mixed, hollow spherical and rod- shape morphology. The Li+ and Na+ ion diffusion kinetics are conferred using cyclic voltammetry. The rate capability of pristine SnO2 anodes are tested using charge-discharge measurements. SnO2/Li half-cell shows the initial discharge capacity of 982 mAh g-1 at 0.1C rate and delivers the specific capacity of 219 mAh g-1 and 72 mAh g-1 at 10C and 20C rates. The SnO2/Na half-cell delivers the initial discharge capacity of 600 mAh g-1 and maintains the specific capacity of 110 mAh g-1 (1C-rate) after 500 charge-discharge cycles. The mixed spherical and rod shape morphology increases the surface area and facilitates the Li+ and Na+-ion diffusion and minimizes pulverization. Post-mortem microstructural studies are performed after 500 cycles, confirming the formation of inert oxide phases and degradation of electrolyte by-products in both LIB and SIB. 

Promising electrochemical performance of pristine SnO2 anodes for lithium and sodium-ion batteries

http://absimage.aps.org/image/MAR08/MWS_MAR08-2007-000836.pdf

Chandran Sudakar

Papers

Electric field control of magnetic phase transitions in Ni3V2O8

Lithium Vanadium Polyanionic Composite Multielectron Intercalation Cathode Derived from Thermodynamically Unstable Li2VP2O7/Li2VP2O7F

Influence of Nano-fibrous and Nano-particulate Morphology on the Rate Capability of Li3V2(PO4)3/C Li-ion Battery Cathode

Promising electrochemical performance of pristine SnO2 anodes for lithium and sodium-ion batteries

Electric field control of magnetic phase transitions in Ni$_{3}$V$_{2}$\O$_{8}$