Defective Tungsten Trioxide Preparation

defective tungsten trioxide preparation image

In the research of traditional catalysts, titanium dioxide (titanium dioxide) is widely used to treat various environmental pollution problems by its photocatalytic reaction. However, titanium dioxide can only be stimulated by ultraviolet light, and ultraviolet light only accounts for about 5% of the energy in sunlight. Therefore, there is a problem of insufficient utilization of solar energy. Therefore, researchers are looking for other new photocatalysts, including trioxide. Tungsten oxide (WO3), however, can absorb UV light with wavelength less than 460nm. The utilization of other visible and infrared energy is still low.


Nano Silver Tungsten Oxide Photocatalyst Coatings

nano silver tungsten oxide photocatalyst coatings image

There are many materials that can be used as photocatalyst in the world, including titanium dioxide (titanium dioxide), zinc oxide (zinc oxide), tin oxide (SnO2), zirconium dioxide (ZrO2), tungsten trioxide (WO3) and other oxide sulfide semiconductors. Among them, titanium dioxide is the most common Nano-Photocatalyst material in the world because of its strong oxidation ability, stable chemical properties and non-toxic.


Tungsten Trioxide As Anode Material for Lithium Ion Batteries

tungsten trioxide as anode material for lithium ion batteries image

As an important n-type semiconductor oxide, tungsten trioxide (WO3) is widely used in chemical sensors, photocatalysis, energy conversion systems and other fields. Because of its large theoretical capacity (693 mAh/g), low cost and high safety (high melting temperature and mechanical stability), tungsten trioxide can also be used as negative electrode materials for lithium ion batteries.


Tungsten Oxide Quantum Dots Synthesis by Ultrasound Hydrothermal Method

tungsten oxide quantum dots image

Quantum dots (QDs) are a new kind of nano-fluorescent materials. Because of their unique electrical and optical properties, QDs have been widely used in physics, chemistry, biology and other fields. As a new fluorescent material.


Waste Tungsten Oxide Recycle and Treatment

waste tungsten oxide recycle and treatment image

At present, the existing processes for recovering and treating waste tungsten oxide to produce ammonium tungstate solution, ammonium paratungstate and ammonium metatungstate are all based on the chemical properties of all tungsten trioxide and blue tungsten oxide which are insoluble or slightly soluble in ammonia water and only soluble in caustic soda or soda ash. The process is to dissolve oxygen in normal pressure or pressure boiling with caustic soda (sodium hydroxide) solution or soda carbonate solution in advance. Tungsten carbide is prepared into sodium tungstate solution, or tungsten oxide is melted with sodium carbonate at high temperature, then tungsten is boiled and leached to form sodium tungstate solution.


Porous Silicon Composite One-Dimensional Tungsten Oxide Nanostructured Gas Sensitive Materials

porous silicon composite one-dimensional tungsten oxide nanostructured gas sensitive materials image

Nitrogen oxide (NOx), as a highly toxic gas, is the main source of acid rain and photochemical smog, which has posed a serious threat to human health and safety. Therefore, the detection of nitrogen oxides has become a research hotspot in recent years.


Tungsten Oxide Hydrogen Sensor

tungsten oxide hydrogen sensor image

In industrial production, hydrogen, as a non-polluting green energy, has attracted wide attention. However, hydrogen is volatile, low ignition point, colorless and tasteless. It is a very dangerous flammable gas when it encounters open fire when its concentration in air is 4-75%. Therefore, the monitoring technology and research of gas sensitive materials for hydrogen play an important role in ensuring personal and property safety.


Tungsten Trioxide Hydrogen Sulfide Gas Sensor

tungsten trioxide hydrogen sulfide gas sensor image

Hydrogen sulfide is a colorless gas with the odor of rotten eggs. Its toxicity is very strong. Its permissible concentration in the air is 10 ppm. The upper and lower limits of explosion range from 4.3% to 46.0%. The harm of hydrogen sulfide gas to human body belongs to chemical nerve toxicity, stimulation and asphyxiation gas, which can destroy red blood cells and cause olfactory stimulation at 0.1 ppm. Therefore, how to quantitatively detect trace hydrogen sulfide gas in the air has become an urgent problem to be solved in relevant workplaces.


Tungsten Oxide Resistance Memory

tungsten oxide resistance memory image

Tungsten oxide resistance memory is a semiconductor device which can achieve storage by reversible change of resistance value of tungsten oxide material under electric field.


Paper-based Two-dimensional Tungsten Trioxide Nanosheets

paper-based two-dimensional tungsten trioxide nanosheets image

In recent years, flexible perovskite solar cells have attracted much attention, and the flexible substrates used have a great impact on the performance of devices. At present, the commonly used flexible substrates of polyethylene terephthalate (PET) and metal foil can not meet the demand. It is urgent to find a cheap and abundant new flexible substitutes.