This critical review shows the basis of photocatalytic water splitting and experimental points, and surveys heterogeneous photocatalyst materials for water splitting into H2 and O2, and H2 or O2 evolution from an aqueous solution containing a sacrificial reagent Many oxides consisting of metal cations with d0 and d10 configurations, metal (oxy)sulfide and metal (oxy)nitride photocatalysts have been reported, especially during the latest decade The fruitful photocatalyst library gives important information on factors affecting photocatalytic performances and design of new materials Photocatalytic water splitting and H2 evolution using abundant compounds as electron donors are expected to contribute to construction of a clean and simple system for solar hydrogen production, and a solution of global energy and environmental issues in the future (361 references)

Heterogeneous photocatalyst materials for water splitting

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

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

Photochemical splitting of water into H2 and O2 using solar energy is a process of great economic and environmental interest. Since the discovery of the first water splitting system based on TiO2 and Pt in 1972 by Fujishima and Honda, over 130 inorganic materials have been discovered as catalysts for this reaction. This review discusses the known inorganic catalysts with a focus on structure–activity relationships.

/pdf/inorganic-materials-as-catalysts-for-photochemical-splitting-3aqsdfv0d0.pdf

Inorganic Materials as Catalysts for Photochemical Splitting of Water

Photocatalytic and photoelectrochemical (PEC) water splitting using semiconductor materials has attracted considerable interest due to its potential to cleanly produce H 2 from water by utilizing abundant solar light. Since Fujishima and Honda used a TiO 2 photoanode in 1972 to split water, researchers have been attempting to develop water-splitting systems that can efficiently use visible light (which accounts for almost half of the solar spectrum on the Earth's surface) in order to realize efficient conversion of solar light. In this report, we review recent progress in this field by focusing on strategies that utilize visible light. Such strategies include two-step photoexcitation systems that were inspired by photosynthesis in nature, band engineering for producing novel photocatalysts that have both a high visible light absorption and suitable energy levels for water splitting, the development of new cocatalysts for efficient H 2 or O 2 production, fabrication of efficient photoelectrodes based on visible-light-responsive semiconductors, and the construction of tandem-type PEC water-splitting systems.

Recent progress on photocatalytic and photoelectrochemical water splitting under visible light irradiation

Band structure-controlled solid solution of Cd1-x ZnxS photocatalyst for hydrogen production by water splitting

Significantly improved photocatalytic hydrogen production activity over Cd1-xZnxSCd1-xZnxS photocatalysts prepared by a novel thermal sulfuration method

Photocatalytic hydrogen production over Na2Ti2O4(OH)2 nanotube sensitized by CdS nanoparticles

The invention publishes a solar energy photochemical catalysis reactor which bases on the compound parabolic condenser. At least a compound parabolic condenser is fixed through the bearing on the cant of the equipment. The glisten surfaces of the each compound parabolic condenser connect with the adjustment screw rod, a tubular reactor installs on the center of the compound parabolic condenser, and each tubular reactor connects together through the PVC tube. Through the coupling of the parabolic condenser and the tubular reactor to realize the solar optical fiber effective accumulation and use, the photocatalyst powder and the peroxide solution recycling move in the reactor internal, the catalyst accepts the light and catalysis when passes through the tubular reactor. The invention has simple operation,and may carry on each kind of photochemical catalysis reaction directly using the sunlight, the quantity of the compound parabolic condenser and tubular reactor may fluctuates by the design requirements, therefore the equipment may apply in each kind of different active photocatalyst.

Solar energy photocatalytic reactor based on condenser of composite paraboloid

This invention discloses a system for utilizing solar energy to catalyze and analyze water to produce hydrogen directly, in which, a gas chromatograph, a flowmeter and a gas collecting bottle are connected orderly on the exit of the top of a liquid tank, a circulation pump is connected at the bottom, one end of a light-catalyzed reactor is connected to the pump and the other end is connected to the liquid tank set with a temperature probe and a precision pressure meter on the wall, in which, the included angle of the slant and the level of the stainless steel frame is a, which is the latitude at the spot, at least one compound paraboloid optical collector is set on the slant fixed by a bearing, the collectors are connected by screws, and a pipe reactor is set at the center of each of the collectors and serial together by PVC tubes.

Chanjuan Xing

Papers

Band structure-controlled solid solution of Cd1-x ZnxS photocatalyst for hydrogen production by water splitting

Significantly improved photocatalytic hydrogen production activity over Cd1-xZnxSCd1-xZnxS photocatalysts prepared by a novel thermal sulfuration method

Photocatalytic hydrogen production over Na2Ti2O4(OH)2 nanotube sensitized by CdS nanoparticles

Solar energy photocatalytic reactor based on condenser of composite paraboloid

Optical catalytic hydrogen production system by directly utilizing solar energy to decompose water