WO3 is a popular and least bothered an n-type semiconductor with promising electrochemical properties, a high surface area, a small pore-size distribution, with several exciting chemical and physical properties, which have made it a appropriate material for various applications such as catalysts, gas sensors, and energy storage applications[5]. Up till, myriads of chemical and physical preparation methods like thermal evaporation, chemical vapor deposition, the sputtering, and colloidal suspension, have been applied for the synthesis of WO3 nanostructures of different phases and morphologies; nanoparticles, nanofiber, nanorods and nanowires. All reported synthesis methods could be either expensive, time consuming or tedious, with huge hazardous waste as toxic byproducts.

Tungsten granule is widely used as accelerator and catalyst in carbon sulfur analyzer to test the content of carbon and sulfur.

Tungsten alloy shielding is made by tungsten nickel copper alloy or tungsten nickel iron alloy instead of lead or steel, and used to shield the radiations.

Tungsten alloy application in civil industry including mechanical industry, instrument industry, electricity industry, metallurgy, oil and chemical industry, sport industry, radiation shielding in medical and nuclear industry.

The welding method of copper bonded tungsten copper electrode is silver brazing, which is the most popular method in our workshop. The silver welding material is used, so that the electricity conductivity can be maintained.

In recent years, nanometered-scale tungsten and its compounds have attracted much focus because of their superior physical and mechanical properties. A wide variety of methods such as mechanical alloying, combustion synthesis, physical vapor deposition (WD), electric wire explosion etc. have been used to synthesize nanostructured tungsten. Among these techniques, mechanical alloying and mechanochemical synthesis (CS) are very attractive. Simple and inexpensive equipments are required, and it can be conducted at ambient temperature. Indeed MCS uses mechanical energy to active chemical reactions.

Recently, two-dimensional (2D) nanomaterials has attract a great attention due to its unknown physical, chemical, electrical and optical properties. For instance, graphene nanosheets mechanically exfoliated from graphite show very high carrier mobility, excellent thermal conductivity and optical properties, which inspires lots of other 2D materials such as graphene oxide (GO) , hexagonal boron nitride (h-BN), transition metal carbides and carbonitrides (MXenes), as well as graphitic carbon nitride (g-C3N4) 161 are well studied.

The increasing use of fossil fuels is the major cause of global warming and climate change. Looking for a sustainable, clean, and highly efficient energy has become research hot spot.

Metastable intermolecular composite (MIC) materials is an intimate mixture of two or more compounds of which at least two are exothermically reactive. However, conventional thermites have a significantly lower reactive power. In contrast, MIC materials, while retaining the high energy density, can have a significantly higher reactive power than conventional thermites.

The most accepted recycling of tungsten scraps are hydrometallurgy or hydrothermal treatment methods. The common recycling process of tungsten scraps to produce ammonium paratungstate (APT) is carried out by the oxidation, milling, fusion, dissolution and extraction processes. Among which, oxidation is the key factor to the recovery rate of tungsten scraps.