Performance of Ganzhou Tungsten Molybdenum Disulfide Molybdenum Disulfide

Ganzhou Haisheng Tungsten and Molybdenum Group Co., Ltd., established in 2006 with a registered capital of 50 million yuan, was renamed Ganzhou Haisheng Tungsten and Molybdenum Group Co., Ltd. in August 2009. The group company is a private limited liability company with 1 wholly-owned subsidiary, 4 holding subsidiaries, and 1 participating company. The leading products mainly include ammonium paratungstate, tungsten oxide, tungsten powder, tungsten carbide powder, tungsten rod, tungsten rod, tungsten molybdenum rod, tungsten molybdenum wire and hard alloy products.

New Structure of Molybdenum Disulfide as a Catalyst for Hydrogen Production from Water or Bringing Cheap Hydrogen Fuel

According to a report on July 3 (Beijing time) on the Physicists' Network, American scientists said on the new online edition of the Journal of the American Chemical Society that they had developed a new molybdenum disulfide structure, which can act as a catalyst in the water hydrogen production reaction, and is expected to replace expensive platinum, helping human beings move into the "hydrogen economy" era of economic and environmental protection as soon as possible.

In theory, hydrogen is a carbon free and pollution-free environmentally friendly fuel. When hydrogen gas is burned to generate energy, only water is produced, but scientists have also proven that it is very difficult to produce, store, and utilize hydrogen from water.

The discovery at the University of Wisconsin Madison may have given people some glimmers of hope. Postdoctoral fellow Mark Lockowski from the Chemistry Department of the university, along with Professor Jin Song, has created a new molybdenum disulfide structure that has been shown to significantly accelerate the hydrogen production reaction from water.

Researchers deposited the nanostructure of molybdenum disulfide on a plate of graphite, and then treated it with lithium to create another molybdenum disulfide structure with different properties. Scientists explain that just like carbon can be made into diamonds for women who love beauty and graphite for children to write with, molybdenum disulfide can be used as both a semiconductor and a metal due to its different structure. When molybdenum disulfide grows on graphite, it is a semiconductor; But when it is treated with lithium, it becomes a metal. Research has shown that molybdenum disulfide in a metallic state has excellent catalytic performance.

Lockowski said: Just like graphite is composed of a pile of easily peeled sheets, molybdenum disulfide is also composed of separable sheets. Previous research has shown that points with catalytic activity are located at the edges of the sheets. The main function of lithium treatment is to transform molybdenum disulfide from a semiconductor state to a metallic state; to separate the sheets, create more edges, increase the number of points with catalytic activity, and greatly improve catalytic performance.

Researchers have stated that the new material is composed of common elements molybdenum and sulfur, making it cost-effective. More importantly, it completely avoids the commonly used catalyst in water to hydrogen production reactions - the rare and expensive platinum. In order to reduce the cost of catalysts for hydrogen production from water, most scientists use the method of manufacturing small particles to reduce the use of platinum, but we do not use platinum at all, and the catalytic performance of the new material is also very good. The new experiment proposes a new method to improve catalyst performance.