Tungsten disulfide (WS₂) is an inorganic compound composed of tungsten (W) and sulfur (S) elements. In addition to its high tungsten and sulfur content, it also contains trace impurities such as oxygen, carbon, hydrogen, and phosphorus. Among these, the oxygen content in WS₂ primarily originates from impurities in raw materials, the production environment, and the introduction during post-processing.

Tungsten disulfide (WS₂) produced by CTIA GROUP LTD is an important transition metal sulfide with characteristics such as a high melting point, high hardness, excellent wear resistance, and lubricity. It can be used as a lubricant to reduce friction coefficients and wear. In the electronics field, it can be applied in the manufacturing of transistors, sensors, and other devices. In the catalysis field, it can be utilized in certain organic reactions.

In addition to its crystal structure and purity affecting the physicochemical properties of tungsten disulfide (WS₂), impurities such as carbon, hydrogen, and oxygen also influence its properties. Although these impurity elements are present in small amounts, their impact on tungsten disulfide properties is significant. Regarding carbon, it affects the structure, electrical properties, mechanical properties, and chemical stability of WS₂ to a certain extent.

In the era we live in, environmental pollution has become increasingly severe, with organic pollutants wreaking havoc on water and air, placing an unbearable burden on ecosystems. The wastewater discharged from printing and dyeing plants is vividly colored and pungent, containing organic dyes that are notoriously difficult to degrade. In the exhaust gases from chemical industrial zones, various organic compounds drift freely, posing a threat to human health. Confronted with these challenges, scientists have been tirelessly searching for effective solutions. Amid this effort, Nano tungsten oxide (WO3-x), a seemingly ordinary material, has demonstrated immense potential in the field of photocatalytic degradation of pollutants, emerging as a new star in environmental protection.