This invention discloses a
boron hydride /
magnesium composite sheet, its preparation method, and its applications, relating to the fields of environmental functional materials and
wastewater treatment technology. The preparation method includes the following steps: under an
inert atmosphere,
boron hydride nanosheets and
magnesium powder are mixed and ground at a
mass ratio of (98~99.8):(0.2~2), and then pressed into a
boron hydride /
magnesium composite sheet blank; the boron hydride / magnesium composite sheet blank is placed in a vacuum or
inert atmosphere, heated to 250~600℃ at a rate of 0.5~10℃ / min, and sintered at this temperature for 0.5~10 hours to obtain the boron hydride / magnesium composite sheet. This method is simple,
environmentally friendly, and low-cost. In the obtained boron hydride / magnesium composite sheet, magnesium exists in a highly dispersed state at the interface of the boron hydride amorphous network. This unique structure synergistically enhances the absorption and utilization of visible light, improves the photogenerated
charge separation efficiency, and significantly enhances the paramagnetic responsiveness of the material.