| This invention provides a semiconductor three-dimensional structure layer that grows on a substrate and is composed of a multitude of nanoscale structures extending in a direction away from the substrate. These nanoscale structures, which can be columnar or lamellar, are made of asymmetric transition metal dichalcogenide compounds represented by the formula (1), where, M is a transition metal, and X1 and X2 are chalcogen elements, with X1 and X2 being different.
MX1X2 Formula (1)
This invention also provides a method for manufacture the semiconductor three-dimensional structure layer and an electrochemical ammonia production method by using said semiconductor three-dimensional structure layer as catalyst. |